fix(ux): confirm modal's Cancel/Confirm were dead on the promise-API path

User report: the Purge Archived dialog ('Permanently delete all
archived items?...') opened, and Cancel did nothing — and Confirm
would have been equally dead, leaving the page stuck behind the
overlay until a reload.

Root cause: confirm.ts wired the modal's buttons ONLY inside the
htmx:confirm interceptor. confirmDialog() — the promise API used by
purgeArchivedItems, remove-account, and other TS call sites — never
wired them. So whenever a page's first confirm interaction came from
the promise path (no hx-confirm element clicked first), both buttons
had no listeners. The 2026-10-30 confirm_probe spec only exercised the
hx-confirm path, which is why it survived.

Fix: wireButtons() now runs at module init (the header renders before
deferred modules) and inside confirmDialog() — both idempotent via the
existing data-wired guard.

Pinned by tests/ui/promise_confirm_probe.spec.ts (no env gating): the
purge POST is route-intercepted, so the probe asserts Cancel closes
the modal and Confirm issues the guarded request without deleting any
dev data. hx-confirm path re-pinned green (confirm_probe with BH_FEED).
Verified manually at 390x844: open -> cancelWired=true -> Cancel
closes -> Confirm fires the intercepted request.

.gitignore

@@ -87,3 +87,4 @@ session-*.md
 # see docs/contributing/development.md → Media fixtures)
 internal/services/testdata/
 test-results
+.openchamber/

AGENTS.md

@@ -145,6 +145,17 @@ every user sees every library unless an admin hides one) is enforced by
   new pages/controls go into `tests/ui/COVERAGE.md`). Item-scoped
   gates may answer 404 as well as 403 (row invisible vs Go-level
   check — contract_pins 2026-10-29).
+- **Collections RLS (2026-10-31)**: `collections` and
+  `collection_items` are governed too — predicates
+  `app_can_read_collection` / `app_can_write_collection`, PURE over
+  their arguments (never query `collections`, so no policy recursion
+  under FORCE RLS). Reads: owner-or-admin; writes: owner, admin escape
+  for SYSTEM collections only. Future sharing = one EXISTS branch
+  inside the predicate functions, no policy migration. Registration
+  seeding declares the new user's identity (`rls.WithUser` in
+  `CreateDefaultCollectionsForUser` — the JWT does not exist yet);
+  test-harness writes to non-system collections must run as the row's
+  OWNER (`scopeExecAs`/`ownerSeedCtx`, not the admin handle).
 
 History: 2026-10-13 (`431fec0`) the series/media listing surfaces
 leaked hidden libraries; **2026-10-29 enforcement moved to RLS** — the

SCREENSHOT_AUTOMATION.md

@@ -1,6 +1,14 @@
 # Screenshot Automation Plan for Bookhoard Documentation
 
-> **Status**: Ready to implement when frontend is complete  
+> **Status**: REJECTED / ARCHIVED (2026-11-02) — not implementing.
+> **Superseded by**: [docs/developer/writing-ui-docs.md](docs/developer/writing-ui-docs.md) —
+> Bookhoard docs are written screenshot-free from now on. Why: screenshots go
+> stale silently (no gate can diff pixels against the UI), die on every
+> redesign, and are unverifiable; the UI is server-rendered so exact labels are
+> greppable and gate-checked instead (`TestUIControlLabels`). The prose
+> standard teaches patterns that survive re-layouts. Kept below unmodified for
+> history.
+>
 > **Last Updated**: 2026-02-03
 
 This document outlines the complete plan for automatically generating screenshots for Bookhoard documentation using Playwright.

bruno/collections/add_auto_assign_rule.yml

@@ -1,41 +0,0 @@
-info:
-  name: Add Auto-Assign Rule
-  type: http
-  seq: 1
-
-http:
-  method: POST
-  url: '{{base_url}}/api/collections/{{collection_id}}/rules'
-  auth: inherit
-  body:
-    type: json
-    data: |-
-      {
-        "field": "genre",
-        "operator": "equals",
-        "value": "Science Fiction",
-        "priority": 1,
-        "enabled": true
-      }
-settings:
-  encodeUrl: true
-  timeout: 0
-  followRedirects: true
-  maxRedirects: 5
-
-runtime:
-  scripts:
-    - type: tests
-      code: |-
-        test("status is 201", function() {
-          expect(res.status).to.eql(201);
-        });
-
-docs:
-  content: |-
-    # Add Auto-Assign Rule
-
-    `POST /api/collections/:id/rules` — auth: jwt.
-
-    Canonical reference: docs/developer/api/collections/add_auto_assign_rule.md (docs site → Developer → API). This request is GENERATED from that doc; edit the doc, then run the drift test with -update.
-  type: text/markdown

bruno/collections/create_collection.yml

@@ -16,7 +16,6 @@ http:
         "color": "#00FF00",
         "icon": "📖",
         "collection_type": "static",
-        "auto_assign_rules": [],
         "view_settings": { "kobo": { "view_mode": "grid" } }
       }
 settings:

bruno/collections/remove_auto_assign_rule.yml

@@ -1,31 +0,0 @@
-info:
-  name: Remove Auto-Assign Rule
-  type: http
-  seq: 13
-
-http:
-  method: DELETE
-  url: '{{base_url}}/api/collections/{{collection_id}}/rules/{{rule_id}}'
-  auth: inherit
-settings:
-  encodeUrl: true
-  timeout: 0
-  followRedirects: true
-  maxRedirects: 5
-
-runtime:
-  scripts:
-    - type: tests
-      code: |-
-        test("status is 204", function() {
-          expect(res.status).to.eql(204);
-        });
-
-docs:
-  content: |-
-    # Remove Auto-Assign Rule
-
-    `DELETE /api/collections/:id/rules/:ruleId` — auth: jwt.
-
-    Canonical reference: docs/developer/api/collections/remove_auto_assign_rule.md (docs site → Developer → API). This request is GENERATED from that doc; edit the doc, then run the drift test with -update.
-  type: text/markdown

bruno/collections/set_chain_order.yml

@@ -0,0 +1,29 @@
+info:
+  name: Set Collection Chain Order
+  type: http
+  seq: 13
+
+http:
+  method: PUT
+  url: '{{base_url}}/api/collections/{{collection_id}}/view-settings'
+  auth: inherit
+  body:
+    type: json
+    data: |-
+      {
+        "chain_order": "newest"
+      }
+settings:
+  encodeUrl: true
+  timeout: 0
+  followRedirects: true
+  maxRedirects: 5
+
+docs:
+  content: |-
+    # Set Collection Chain Order
+
+    `PUT /api/collections/:id/view-settings` — auth: jwt.
+
+    Canonical reference: docs/developer/api/collections/set_chain_order.md (docs site → Developer → API). This request is GENERATED from that doc; edit the doc, then run the drift test with -update.
+  type: text/markdown

bruno/collections/test_rule.yml

@@ -1,48 +0,0 @@
-info:
-  name: Test Rule
-  type: http
-  seq: 15
-
-http:
-  method: POST
-  url: '{{base_url}}/api/collections/test-rules'
-  auth: inherit
-  body:
-    type: json
-    data: |-
-      {
-        "rules": [
-          {
-            "field": "genre",
-            "operator": "equals",
-            "value": "Science Fiction"
-          },
-          {
-            "field": "author",
-            "operator": "contains",
-            "value": "Asimov"
-          }
-        ]
-      }
-settings:
-  encodeUrl: true
-  timeout: 0
-  followRedirects: true
-  maxRedirects: 5
-
-runtime:
-  scripts:
-    - type: tests
-      code: |-
-        test("status is 200", function() {
-          expect(res.status).to.eql(200);
-        });
-
-docs:
-  content: |-
-    # Test Rule
-
-    `POST /api/collections/test-rules` — auth: jwt.
-
-    Canonical reference: docs/developer/api/collections/test_rule.md (docs site → Developer → API). This request is GENERATED from that doc; edit the doc, then run the drift test with -update.
-  type: text/markdown

bruno/collections/update_collection.yml

@@ -15,7 +15,6 @@ http:
         "description": "Updated description",
         "color": "#33CCFF",
         "icon": "📚",
-        "auto_assign_rules": [],
         "view_settings": { "hide_finished": true },
         "hide_finished": ["true"],
         "show_up_next": ["true"]

bruno/collections/update_rule.yml

@@ -1,29 +0,0 @@
-info:
-  name: Update Collection Rule
-  type: http
-  seq: 17
-
-http:
-  method: PUT
-  url: '{{base_url}}/api/collections/{{collection_id}}/rules/{{rule_id}}'
-  auth: inherit
-  body:
-    type: json
-    data: |-
-      {
-        "enabled": false
-      }
-settings:
-  encodeUrl: true
-  timeout: 0
-  followRedirects: true
-  maxRedirects: 5
-
-docs:
-  content: |-
-    # Update Collection Rule
-
-    `PUT /api/collections/:id/rules/:ruleId` — auth: jwt.
-
-    Canonical reference: docs/developer/api/collections/update_rule.md (docs site → Developer → API). This request is GENERATED from that doc; edit the doc, then run the drift test with -update.
-  type: text/markdown

cmd/server/main.go

@@ -170,9 +170,13 @@ func main() {
 	opdsHandler := handlers.NewOPDSHandler(queries, libraryService, conversionService)
 	opdsHandler.SetSettings(registry)
 
-	collectionHandler := handlers.NewCollectionHandler(queries, libraryService, connManager)
-	dashboardService := services.NewDashboardService(queries)
-	dashboardHandler := handlers.NewDashboardHandler(queries)
+	// One composed-engine service shared by search AND the collection
+	// subsystem (item 3.2): tree-driven smart collections evaluate
+	// through the unified engine.
+	collectionSearchService := services.NewSearchService(queries, scopedDB)
+	collectionHandler := handlers.NewCollectionHandler(queries, libraryService, connManager, collectionSearchService)
+	dashboardService := services.NewDashboardService(queries, collectionSearchService)
+	dashboardHandler := handlers.NewDashboardHandler(queries, collectionSearchService)
 	seriesHandler := handlers.NewSeriesHandler(queries)
 	filtersHandler := handlers.NewFiltersHandler(queries)
 	mediaHandler := handlers.NewMediaHandler(queries, scopedDB, libraryService, progressService, annotationService)

cmd/server/tests/audiobook_multifile_test.go

@@ -659,12 +659,14 @@ func TestAudiobookFolderSidecarEditDetected(t *testing.T) {
 	require.NoError(t, os.WriteFile(sidecar, []byte(`{"title":"Sidecar Real Titlz","series":["Sidecar Saga (Reading Order) #1"]}`), 0o644))
 	scanTestFolder(t, setup, admin, folder)
 	var collCount int
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	// Owner-scoped read: collections RLS (2026-10-31) hides rows from
+	// the pool session's SeedIdentity.
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(admin),
 		`SELECT COUNT(*) FROM collections WHERE name = 'Sidecar Saga (Reading Order)' AND user_id = $1`, admin,
 	).Scan(&collCount))
 	require.Equal(t, 1, collCount, "reading-order sidecar edit creates the collection for an existing book")
 	scanTestFolder(t, setup, admin, folder)
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(admin),
 		`SELECT COUNT(*) FROM collections WHERE name = 'Sidecar Saga (Reading Order)' AND user_id = $1`, admin,
 	).Scan(&collCount))
 	require.Equal(t, 1, collCount, "rescan is idempotent — no duplicate collection")

cmd/server/tests/collections_rls_test.go

@@ -0,0 +1,127 @@
+package main
+
+import (
+	"bytes"
+	"testing"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// Collections RLS (2026-10-31): ownership enforcement moved to the DB
+// layer (p_collections_* + parent-checked collection_items policies in
+// schema.sql, predicates app_can_read/write_collection). The API surface
+// answers invisibility with 404 — including the write endpoints that
+// had NO app-level gate (Update/AddBooks, the flagged gap). Admin keeps
+// the escape; system collections stay per-user; registration still
+// seeds them (the seeding identity fix in
+// CreateDefaultCollectionsForUser is regression-pinned here).
+func TestCollectionsRLS(t *testing.T) {
+	setup := setupTestServer(t)
+	ownerToken := setup.RegularToken // user A: the harness regular user
+	adminToken := setup.Token
+	marker := fmt.Sprintf("rls%d", time.Now().UnixNano()%100000)
+
+	// User B: a second regular user via registration. The register
+	// endpoint is rate-limited — exactly one call. The response's
+	// access_token is B's identity for every probe below.
+	regEmail := fmt.Sprintf("%s@tests.bookhoard.internal", marker)
+	regBody := fmt.Sprintf(
+		`{"email":%q,"username":%q,"password":"Test@Pass123!"}`,
+		regEmail, "rlsb"+marker)
+	regResp, err := http.Post(setup.Server.URL+"/api/auth/register",
+		"application/json", bytes.NewReader([]byte(regBody)))
+	require.NoError(t, err)
+	require.Equal(t, http.StatusCreated, regResp.StatusCode,
+		"registration must succeed — including the system-collection seeding that now runs under the new user's RLS identity")
+	var reg struct {
+		Token string `json:"access_token"`
+	}
+	require.NoError(t, json.NewDecoder(regResp.Body).Decode(&reg))
+	require.NotEmpty(t, reg.Token)
+	otherToken := reg.Token
+	_ = regResp.Body.Close()
+
+	// B's registration seeded B's OWN system collections — visible in
+	// B's list (this is the registration-seeding identity fix, live).
+	code, body := podcastAuthed(t, setup, otherToken, "GET", "/api/collections", "")
+	require.Equal(t, http.StatusOK, code)
+	assert.Contains(t, string(body), "Continue Reading",
+		"registration seeded the new user's system collections under RLS")
+
+	// A creates the target collection.
+	code, body = podcastAuthed(t, setup, ownerToken, "POST", "/api/collections",
+		`{"name":"test RLS Owner ` + marker + `"}`)
+	require.Equal(t, http.StatusCreated, code, "%s", string(body))
+	var coll struct {
+		ID string `json:"id"`
+	}
+	require.NoError(t, json.Unmarshal(body, &coll))
+	t.Cleanup(func() {
+		podcastAuthed(t, setup, ownerToken, "DELETE", "/api/collections/"+coll.ID, "")
+	})
+
+	// ── B (non-owner) probes A's collection: invisible = 404 ──
+	code, _ = podcastAuthed(t, setup, otherToken, "GET", "/api/collections/"+coll.ID, "")
+	require.Equal(t, http.StatusNotFound, code, "detail-by-id is RLS-invisible cross-user")
+
+	code, body = podcastAuthed(t, setup, otherToken, "GET", "/api/collections", "")
+	require.Equal(t, http.StatusOK, code)
+	assert.NotContains(t, string(body), "test RLS Owner "+marker,
+		"the list query stays user-scoped")
+
+	code, body = podcastAuthed(t, setup, otherToken, "PUT", "/api/collections/"+coll.ID,
+		`{"name":"renamed by B"}`)
+	require.Equal(t, http.StatusNotFound, code,
+		"update of an RLS-invisible row answers 404 (was: ungated success): %s", string(body))
+
+	code, body = podcastAuthed(t, setup, otherToken, "POST", "/api/collections/"+coll.ID+"/books",
+		`{"book_ids":[]}`)
+	require.Equal(t, http.StatusNotFound, code,
+		"AddBooks on an RLS-invisible collection answers 404 (the flagged ungated-write gap, closed at the DB)")
+
+	code, body = podcastAuthed(t, setup, otherToken, "PUT",
+		"/api/collections/"+coll.ID+"/view-settings", `{"chain_order":"newest"}`)
+	require.Equal(t, http.StatusNotFound, code,
+		"chain-order write on an invisible collection answers 404")
+
+	code, _ = podcastAuthed(t, setup, otherToken, "DELETE", "/api/collections/"+coll.ID, "")
+	require.Equal(t, http.StatusNoContent, code,
+		"DELETE touches no rows under RLS (silent no-op — no destructive action)")
+
+	// The no-op delete lied about nothing: A still owns the collection.
+	code, body = podcastAuthed(t, setup, ownerToken, "GET", "/api/collections/"+coll.ID, "")
+	require.Equal(t, http.StatusOK, code, "owner retains the collection after B's failed delete")
+
+	// ── admin escape: sees everything, as with media ──
+	code, _ = podcastAuthed(t, setup, adminToken, "GET", "/api/collections/"+coll.ID, "")
+	require.Equal(t, http.StatusOK, code, "admin persona sees collections (policy escape)")
+
+	// ── B's ownership works: B renames B's OWN system collection ──
+	// (positive control — B is not locked out of what B owns)
+	code, body = podcastAuthed(t, setup, otherToken, "GET", "/api/collections", "")
+	require.Equal(t, http.StatusOK, code)
+	var list struct {
+		Collections []struct {
+			ID   string `json:"id"`
+			Name string `json:"name"`
+		} `json:"collections"`
+	}
+	require.NoError(t, json.Unmarshal(body, &list))
+	var bSystem string
+	for _, c := range list.Collections {
+		if c.Name == "Continue Reading" {
+			bSystem = c.ID
+			break
+		}
+	}
+	require.NotEmpty(t, bSystem, "B owns the seeded system collections")
+	code, body = podcastAuthed(t, setup, otherToken, "PUT", "/api/collections/"+bSystem,
+		`{"name":"Continue Reading"}`)
+	require.Contains(t, []int{http.StatusOK, http.StatusCreated}, code,
+		"owner mutation of an OWN collection still works: %s", string(body))
+}

cmd/server/tests/collections_smart_test.go

@@ -56,36 +56,6 @@ func smartGetCollection(t *testing.T, setup *TestServerSetup, token, collectionI
 	return result
 }
 
-func smartPostRule(t *testing.T, setup *TestServerSetup, token, collectionID, field, operator, value string, enabled *bool) *http.Response {
-	t.Helper()
-	payload := map[string]interface{}{
-		"field":    field,
-		"operator": operator,
-		"value":    value,
-	}
-	if enabled != nil {
-		payload["enabled"] = *enabled
-	}
-	body, _ := json.Marshal(payload)
-	req, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections/"+collectionID+"/rules", bytes.NewBuffer(body))
-	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("Authorization", "Bearer "+token)
-	resp, err := http.DefaultClient.Do(req)
-	require.NoError(t, err)
-	return resp
-}
-
-func smartDecodeRuleID(t *testing.T, resp *http.Response) string {
-	t.Helper()
-	defer func(Body io.ReadCloser) { _ = Body.Close() }(resp.Body)
-	var result map[string]interface{}
-	require.NoError(t, json.NewDecoder(resp.Body).Decode(&result))
-	rule := result["rule"].(map[string]interface{})
-	return rule["id"].(string)
-}
-
-// Data helpers -----------------------------------------------------------
-
 func smartCreateLibraryAndBooks(t *testing.T, setup *TestServerSetup, userID uuid.UUID, titlesByGenre map[string]string) (libraryID string, bookIDs []string) {
 	t.Helper()
 	ctx := context.Background()
@@ -145,81 +115,83 @@ func TestSmartCollections(t *testing.T) {
 	setup := setupTestServer(t)
 	adminID := getTestUserID(t, setup.DB)
 
-	t.Run("FirstRuleConvertsCollectionToSmart_LiveMembership", func(t *testing.T) {
+	t.Run("TreeCollectionLiveMembership", func(t *testing.T) {
+		// The unified engine (item 3.2): a collection created WITH a
+		// books-scope tree evaluates LIVE — stored links are ignored,
+		// only tree matches render.
 		_, bookIDs := smartCreateLibraryAndBooks(t, setup, adminID, map[string]string{
 			"Smart SF Book One": "Science Fiction",
 			"Smart SF Book Two": "Science Fiction",
 			"Smart FANT Book":   "Fantasy",
 		})
+		_ = bookIDs
 
-		// Rule evaluation ignores stored links: a static collection's own
-		// added item must NOT show up once the collection is smart.
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart Live "+uuid.NewString()[:8], "static")
-
-		// Add one hand-picked book (a Fantasy one that the smart rule
-		// will not match — so it must vanish from the render).
-		addBody, _ := json.Marshal(map[string]interface{}{"book_ids": []string{bookIDs[2]}})
-		addReq, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections/"+collID+"/books", bytes.NewBuffer(addBody))
-		addReq.Header.Set("Content-Type", "application/json")
-		addReq.Header.Set("Authorization", "Bearer "+setup.Token)
-		addResp, err := http.DefaultClient.Do(addReq)
+		tree := map[string]interface{}{
+			"scope": "books", "mode": "all",
+			"children": []map[string]interface{}{
+				{"field": "genre", "op": "is", "values": []string{"Science Fiction"}},
+			},
+		}
+		body, _ := json.Marshal(map[string]interface{}{
+			"name":        "Test Smart Tree " + uuid.NewString()[:8],
+			"filter_tree": tree,
+		})
+		req, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections", bytes.NewBuffer(body))
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+setup.Token)
+		resp, err := http.DefaultClient.Do(req)
 		require.NoError(t, err)
-		require.Equal(t, http.StatusNoContent, addResp.StatusCode)
-		_ = addResp.Body.Close()
-
-		staticDetail := smartGetCollection(t, setup, setup.Token, collID)
-		assert.Equal(t, false, staticDetail["is_smart"])
-		assert.Equal(t, float64(1), staticDetail["book_count"], "static collection shows its stored link")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "genre", "equals", "Science Fiction", nil)
 		require.Equal(t, http.StatusCreated, resp.StatusCode)
+		var created struct {
+			ID string `json:"id"`
+		}
+		require.NoError(t, json.NewDecoder(resp.Body).Decode(&created))
 		_ = resp.Body.Close()
+		t.Cleanup(func() {
+			del, _ := http.NewRequest("DELETE", setup.Server.URL+"/api/collections/"+created.ID, nil)
+			del.Header.Set("Authorization", "Bearer "+setup.Token)
+			_, _ = http.DefaultClient.Do(del)
+		})
 
-		smartDetail := smartGetCollection(t, setup, setup.Token, collID)
-		assert.Equal(t, true, smartDetail["is_smart"], "rules presence derives the type")
-		assert.Equal(t, float64(2), smartDetail["book_count"], "live rule matches only")
-
-		memberTitles := smartLibraryTitleSet(t, smartDetail)
+		detail := smartGetCollection(t, setup, setup.Token, created.ID)
+		assert.Equal(t, true, detail["is_smart"], "tree presence derives the type")
+		memberTitles := smartLibraryTitleSet(t, detail)
 		assert.True(t, memberTitles["Smart SF Book One"])
 		assert.True(t, memberTitles["Smart SF Book Two"])
-		assert.False(t, memberTitles["Smart FANT Book"], "hand-picked link is ignored under smart evaluation (v1 no hybrid)")
-	})
-
-	t.Run("DisabledRuleExcludedFromLiveSet", func(t *testing.T) {
-		smartCreateLibraryAndBooks(t, setup, adminID, map[string]string{
-			"Smart Diss Book": "Science Fiction",
-		})
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart Disabled "+uuid.NewString()[:8], "smart")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "genre", "equals", "Science Fiction", nil)
-		require.Equal(t, http.StatusCreated, resp.StatusCode)
-		ruleID := smartDecodeRuleID(t, resp)
-
-		assert.Equal(t, float64(1), smartGetCollection(t, setup, setup.Token, collID)["book_count"])
-
-		// Disable: membership drops to zero at once.
-		falseFlag := false
-		dBody, _ := json.Marshal(map[string]interface{}{"enabled": falseFlag})
-		dReq, _ := http.NewRequest("PUT", setup.Server.URL+"/api/collections/"+collID+"/rules/"+ruleID, bytes.NewBuffer(dBody))
-		dReq.Header.Set("Content-Type", "application/json")
-		dReq.Header.Set("Authorization", "Bearer "+setup.Token)
-		dResp, err := http.DefaultClient.Do(dReq)
-		require.NoError(t, err)
-		require.Equal(t, http.StatusOK, dResp.StatusCode)
-		_ = dResp.Body.Close()
-
-		assert.Equal(t, float64(0), smartGetCollection(t, setup, setup.Token, collID)["book_count"], "disabled rules never match")
+		assert.False(t, memberTitles["Smart FANT Book"], "the tree's AND governs membership live")
 	})
 
 	t.Run("SmartCollectionsRejectMembershipMutations", func(t *testing.T) {
 		smartCreateLibraryAndBooks(t, setup, adminID, map[string]string{
 			"Smart Guard Book": "Science Fiction",
 		})
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart Guard "+uuid.NewString()[:8], "smart")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "genre", "equals", "Science Fiction", nil)
+		tree := map[string]interface{}{
+			"scope": "books", "mode": "all",
+			"children": []map[string]interface{}{
+				{"field": "genre", "op": "is", "values": []string{"Science Fiction"}},
+			},
+		}
+		body, _ := json.Marshal(map[string]interface{}{
+			"name":        "Test Smart Guard " + uuid.NewString()[:8],
+			"filter_tree": tree,
+		})
+		req, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections", bytes.NewBuffer(body))
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+setup.Token)
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
 		require.Equal(t, http.StatusCreated, resp.StatusCode)
+		var created struct {
+			ID string `json:"id"`
+		}
+		require.NoError(t, json.NewDecoder(resp.Body).Decode(&created))
 		_ = resp.Body.Close()
+		collID := created.ID
+		t.Cleanup(func() {
+			del, _ := http.NewRequest("DELETE", setup.Server.URL+"/api/collections/"+collID, nil)
+			del.Header.Set("Authorization", "Bearer "+setup.Token)
+			_, _ = http.DefaultClient.Do(del)
+		})
 
 		addBody, _ := json.Marshal(map[string]interface{}{"book_ids": []string{uuid.NewString()}})
 		addReq, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections/"+collID+"/books", bytes.NewBuffer(addBody))
@@ -238,53 +210,10 @@ func TestSmartCollections(t *testing.T) {
 		_ = removeResp.Body.Close()
 	})
 
-	t.Run("RemoveLastRuleRevertsToStatic", func(t *testing.T) {
-		smartCreateLibraryAndBooks(t, setup, adminID, map[string]string{
-			"Smart Back Book": "Science Fiction",
-		})
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart Revert "+uuid.NewString()[:8], "smart")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "tags", "contains", "no-such-tag", nil)
-		require.Equal(t, http.StatusCreated, resp.StatusCode)
-		ruleID := smartDecodeRuleID(t, resp)
-
-		smartDetail := smartGetCollection(t, setup, setup.Token, collID)
-		assert.Equal(t, true, smartDetail["is_smart"])
-
-		delReq, _ := http.NewRequest("DELETE", setup.Server.URL+"/api/collections/"+collID+"/rules/"+ruleID, nil)
-		delReq.Header.Set("Authorization", "Bearer "+setup.Token)
-		delResp, err := http.DefaultClient.Do(delReq)
-		require.NoError(t, err)
-		require.Equal(t, http.StatusOK, delResp.StatusCode)
-		_ = delResp.Body.Close()
-
-		staticDetail := smartGetCollection(t, setup, setup.Token, collID)
-		assert.Equal(t, false, staticDetail["is_smart"], "removing the last rule reverts to static")
-
-		// Membership mutations work again on the reverted static.
-		addBody, _ := json.Marshal(map[string]interface{}{"book_ids": []string{uuid.NewString()}})
-		addReq, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections/"+collID+"/books", bytes.NewBuffer(addBody))
-		addReq.Header.Set("Content-Type", "application/json")
-		addReq.Header.Set("Authorization", "Bearer "+setup.Token)
-		addResp, err := http.DefaultClient.Do(addReq)
-		require.NoError(t, err)
-		assert.Equal(t, http.StatusNoContent, addResp.StatusCode)
-		_ = addResp.Body.Close()
-	})
-
-	t.Run("RuleValidationAndSystemCollections", func(t *testing.T) {
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart Valid "+uuid.NewString()[:8], "static")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "not_a_field", "equals", "x", nil)
-		require.Equal(t, http.StatusBadRequest, resp.StatusCode)
-		_ = resp.Body.Close()
-
-		resp = smartPostRule(t, setup, setup.Token, collID, "genre", "equals", "Science Fiction", nil)
-		require.Equal(t, http.StatusCreated, resp.StatusCode)
-		_ = resp.Body.Close()
-
-		// System collections may never carry rules.
-		colls, err := setup.DB.GetCollectionsByUser(context.Background(), pgtype.UUID{Bytes: [16]byte(adminID), Valid: true})
+	t.Run("SystemCollectionsBlockedFromTheEditor", func(t *testing.T) {
+		// System collections may never carry rules/trees — the editor
+		// route refuses them (item 3.4: the page IS the editor).
+		colls, err := setup.DB.GetCollectionsByUser(ownerSeedCtx(pgtype.UUID{Bytes: [16]byte(adminID), Valid: true}), pgtype.UUID{Bytes: [16]byte(adminID), Valid: true})
 		require.NoError(t, err)
 		var systemID string
 		for _, c := range colls {
@@ -295,20 +224,46 @@ func TestSmartCollections(t *testing.T) {
 		}
 		require.NotEmpty(t, systemID, "admin user should have system collections")
 
-		sysResp := smartPostRule(t, setup, setup.Token, systemID, "genre", "equals", "x", nil)
-		require.Equal(t, http.StatusBadRequest, sysResp.StatusCode)
-		_ = sysResp.Body.Close()
+		req, _ := http.NewRequest("GET", setup.Server.URL+"/collections/"+systemID+"/rules", nil)
+		req.Header.Set("Authorization", "Bearer "+setup.Token)
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer func(Body io.ReadCloser) { _ = Body.Close() }(resp.Body)
+		assert.NotEqual(t, http.StatusOK, resp.StatusCode,
+			"system collections never render the smart editor")
 	})
 
 	t.Run("CollectionsListRespectsIncludeAutoWithLiveCounts", func(t *testing.T) {
 		_, _ = smartCreateLibraryAndBooks(t, setup, adminID, map[string]string{
 			"Smart List Book": "Science Fiction",
 		})
-		collID := smartCreateCollection(t, setup, setup.Token, "Test Smart List "+uuid.NewString()[:8], "smart")
-
-		resp := smartPostRule(t, setup, setup.Token, collID, "genre", "equals", "Science Fiction", nil)
-		require.Equal(t, http.StatusCreated, resp.StatusCode)
-		_ = resp.Body.Close()
+		tree := map[string]interface{}{
+			"scope": "books", "mode": "all",
+			"children": []map[string]interface{}{
+				{"field": "genre", "op": "is", "values": []string{"Science Fiction"}},
+			},
+		}
+		body, _ := json.Marshal(map[string]interface{}{
+			"name":        "Test Smart List " + uuid.NewString()[:8],
+			"filter_tree": tree,
+		})
+		req2, _ := http.NewRequest("POST", setup.Server.URL+"/api/collections", bytes.NewBuffer(body))
+		req2.Header.Set("Content-Type", "application/json")
+		req2.Header.Set("Authorization", "Bearer "+setup.Token)
+		resp2, err := http.DefaultClient.Do(req2)
+		require.NoError(t, err)
+		require.Equal(t, http.StatusCreated, resp2.StatusCode)
+		var created struct {
+			ID string `json:"id"`
+		}
+		require.NoError(t, json.NewDecoder(resp2.Body).Decode(&created))
+		_ = resp2.Body.Close()
+		collID := created.ID
+		t.Cleanup(func() {
+			del, _ := http.NewRequest("DELETE", setup.Server.URL+"/api/collections/"+collID, nil)
+			del.Header.Set("Authorization", "Bearer "+setup.Token)
+			_, _ = http.DefaultClient.Do(del)
+		})
 
 		// Default list (the Android app's read): smart collections hidden.
 		req, _ := http.NewRequest("GET", setup.Server.URL+"/api/collections", nil)

cmd/server/tests/contract_pins_test.go

@@ -459,6 +459,8 @@ var bookInfoKeys = []string{
 	"media_item_id", "title", "author", "cover_image_path",
 	"has_conflict", "format_group", "badge",
 	"viewer_percentage", "library_name",
+	// Episode-collections extras (2.3 widening, every surface emits):
+	"is_episode", "feed_title", "download_state", "hidden",
 }
 
 func collectionURL(setup *TestServerSetup, id string) string {
@@ -498,8 +500,9 @@ func TestContractPin_CollectionsJSON(t *testing.T) {
 	// payload; docs/contract_pins.md changelog).
 	envelopeKeys := []string{
 		"id", "user_id", "name", "description", "color", "icon",
-		"auto_assign_rules", "view_settings", "books", "book_count",
+		"view_settings", "books", "book_count",
 		"is_smart", "created_at", "up_next",
+		"filter_tree", // item-3.2 widening (docs/contract_pins.md)
 	}
 
 	t.Run("user collection with library_id (badged branch)", func(t *testing.T) {
@@ -562,11 +565,14 @@ func TestContractPin_CollectionsJSON(t *testing.T) {
 		assertArrayItemShape(t, "collection books[] (no library)", books, bookInfoKeys, bookInfoKeys)
 	})
 
-	t.Run("smart collection (rules branch)", func(t *testing.T) {
+	t.Run("smart collection (tree branch)", func(t *testing.T) {
 		resp := doReq(t, "POST", setup.Server.URL+"/api/collections", map[string]interface{}{
 			"name": fmt.Sprintf("Test Contract Smart %d", time.Now().UnixNano()),
-			"auto_assign_rules": []map[string]interface{}{
-				{"id": "rule-1", "field": "genre", "operator": "equals", "value": "Science Fiction", "priority": 5},
+			"filter_tree": map[string]interface{}{
+				"scope": "books", "mode": "any",
+				"children": []map[string]interface{}{
+					{"field": "genre", "op": "is", "values": []string{"Science Fiction"}},
+				},
 			},
 		}, setup.Token)
 		defer resp.Body.Close()

cmd/server/tests/custom_section_builder_test.go

@@ -0,0 +1,157 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"bookhoard/internal/database"
+)
+
+// The custom-section builder's save, end to end (2026-10-31 tree
+// migration). The page posts the legacy rules vocabulary — rules as a
+// JSON-encoded ARRAY inside a STRING (it has done so since the page was
+// written, 2026-02-19; the save never once bound successfully before
+// the migration) — plus match_type, hand-picked book ids, and the
+// dashboard pin. The server converts the rules to a filter tree at
+// write time, attaches the manual picks, and the dashboard section
+// renders stored membership + the tree's live matches, deduped.
+func TestCustomSectionBuilderSave(t *testing.T) {
+	setup := setupTestServer(t)
+	adminToken := setup.Token
+	regToken := setup.RegularToken
+	marker := fmt.Sprintf("csb%d", time.Now().UnixNano()%100000)
+
+	libID := createTestLibraryWithFolder(t, setup.Server, adminToken, "test CSB Library "+marker, true)
+	libUUID, err := uuid.Parse(libID)
+	require.NoError(t, err)
+
+	// Two items the title rule matches, one it doesn't. Alpha is ALSO
+	// hand-picked — the section must render it once, not twice.
+	makeItem := func(title string) uuid.UUID {
+		id, cerr := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
+			LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
+			Title:     title,
+			Authors:   []string{"CSB Author"},
+			FilePath:  fmt.Sprintf("/tmp/csb/%s-%s.epub", marker, strings.ReplaceAll(title, " ", "-")),
+			FileSize:  pgtype.Int8{Int64: 128, Valid: true},
+			MimeType:  pgtype.Text{String: "application/epub+zip", Valid: true},
+		})
+		require.NoError(t, cerr)
+		out, perr := uuid.FromBytes(id.ID.Bytes[:])
+		require.NoError(t, perr)
+		return out
+	}
+	alpha := makeItem("CSBRULE Alpha")
+	_ = makeItem("CSBRULE Beta")
+	manual := makeItem("CSB Manual Pick")
+	require.NotZero(t, alpha)
+
+	// The EXACT payload shape the builder page posts.
+	payload := fmt.Sprintf(`{
+		"library_id": %q,
+		"name": "test CSB Section %s",
+		"icon": "📚",
+		"description": "built by the custom-section builder",
+		"show_on_dashboard": true,
+		"auto_assign_rules": %[3]s,
+		"manual_book_ids": [%q, %q],
+		"match_type": "all"
+	}`, libID, marker,
+		`"[{\"field\":\"title\",\"operator\":\"contains\",\"value\":\"CSBRULE\"}]"`,
+		alpha.String(), manual.String())
+
+	code, body := podcastAuthed(t, setup, regToken, "POST", "/api/collections", payload)
+	require.Equal(t, http.StatusCreated, code, "%s", string(body))
+	var coll struct {
+		ID string `json:"id"`
+	}
+	require.NoError(t, json.Unmarshal([]byte(body), &coll))
+	collID := coll.ID
+	require.NotEmpty(t, collID)
+	t.Cleanup(func() {
+		podcastAuthed(t, setup, regToken, "DELETE", "/api/collections/"+collID, "")
+	})
+
+	// The converted tree round-trips: root mode from match_type, the
+	// rule as a qf child, and the collection IS smart with no
+	// collection_type sent.
+	code, body = podcastAuthed(t, setup, regToken, "GET", "/api/collections/"+collID, "")
+	require.Equal(t, http.StatusOK, code)
+	var detail struct {
+		IsSmart    bool `json:"is_smart"`
+		FilterTree struct {
+			Mode     string `json:"mode"`
+			Children []struct {
+				Field  string   `json:"field"`
+				Op     string   `json:"op"`
+				Values []string `json:"values"`
+			} `json:"children"`
+		} `json:"filter_tree"`
+	}
+	require.NoError(t, json.Unmarshal([]byte(body), &detail))
+	assert.True(t, detail.IsSmart, "converted rules make the collection smart")
+	assert.Equal(t, "all", detail.FilterTree.Mode, "match_type seeds the tree's root mode")
+	require.Len(t, detail.FilterTree.Children, 1)
+	assert.Equal(t, "title", detail.FilterTree.Children[0].Field)
+	assert.Equal(t, []string{"CSBRULE"}, detail.FilterTree.Children[0].Values)
+
+	// The dashboard section renders stored membership + live matches,
+	// deduped: Alpha (rule + manual), Beta (rule), Manual (manual).
+	code, body = podcastAuthed(t, setup, regToken, "GET",
+		"/api/dashboard/sections?library_id="+libID, "")
+	require.Equal(t, http.StatusOK, code, "%s", string(body))
+	var dash struct {
+		Sections []struct {
+			Title        string `json:"title"`
+			CollectionID string `json:"collection_id"`
+			Items        []struct {
+				Title string `json:"title"`
+			} `json:"items"`
+		} `json:"sections"`
+	}
+	require.NoError(t, json.Unmarshal([]byte(body), &dash))
+	var section *struct {
+		Title        string `json:"title"`
+		CollectionID string `json:"collection_id"`
+		Items        []struct {
+			Title string `json:"title"`
+		} `json:"items"`
+	}
+	for i := range dash.Sections {
+		if dash.Sections[i].CollectionID == collID {
+			section = &dash.Sections[i]
+			break
+		}
+	}
+	require.NotNil(t, section, "the custom section renders on the dashboard: %s", string(body))
+	titles := map[string]int{}
+	for _, it := range section.Items {
+		titles[it.Title]++
+	}
+	assert.Equal(t, 1, titles["CSBRULE Alpha"], "rule-matched AND hand-picked renders exactly once")
+	assert.Equal(t, 1, titles["CSBRULE Beta"], "rule match rides the tree")
+	assert.Equal(t, 1, titles["CSB Manual Pick"], "manual picks are attached")
+	assert.Len(t, section.Items, 3, "nothing else leaks into the section")
+}
+
+// TestCustomSectionBuilderBadRule pins the adapter's rejection path: a
+// rule the engine cannot honor is a 400 that names the field, never a
+// stored 500 at render time.
+func TestCustomSectionBuilderBadRule(t *testing.T) {
+	setup := setupTestServer(t)
+	regToken := setup.RegularToken
+
+	code, body := podcastAuthed(t, setup, regToken, "POST", "/api/collections",
+		`{"name":"test CSB Bad `+fmt.Sprint(time.Now().UnixNano())+`","auto_assign_rules":"[{\"field\":\"not_a_field\",\"operator\":\"contains\",\"value\":\"x\"}]"}`)
+	assert.Equal(t, http.StatusBadRequest, code, "%s", string(body))
+	assert.Contains(t, string(body), "section rule")
+}

cmd/server/tests/filter_builder_test.go

@@ -295,6 +295,115 @@ func TestFilterComposedSemantics(t *testing.T) {
 	assert.Equal(t, []string{"Sem Tide"}, got, "published_year at_least")
 }
 
+// TestFilterScopesAndEpisodeFields pins item 3.1: the books scope
+// excludes podcasts (the leak the composed head used to have), the
+// episodes scope is episodes only, episode fields evaluate in SQL
+// (feed-in, downloaded, played, published-date-within), and episode
+// fields are 400s in books trees.
+func TestFilterScopesAndEpisodeFields(t *testing.T) {
+	setup := setupTestServer(t)
+	t.Cleanup(func() { _ = setup.Close() })
+
+	regUUID := getRegularUserID(t, setup.DB)
+	builderFixtureLib(t, setup, regUUID, "Scope")
+
+	// Podcasts library + a subscribed feed with three downloaded
+	// episodes: two fresh/unplayed, one played (~finished) — the
+	// played-rule fixture.
+	feedLib, _ := createPodcastsLibrary(t, setup, "test Scope Podcasts")
+	feed, err := setup.DB.CreatePodcastFeed(adminSeedCtx(t, setup), database.CreatePodcastFeedParams{
+		LibraryID: feedLib.ID,
+		FeedUrl:   "https://feed.invalid/scope-probe.xml",
+		Title:     "Scope Probe Feed",
+	})
+	require.NoError(t, err)
+	epFresh := upsertTestEpisode(t, setup, feed, "scope-fresh", "Scope Fresh Episode", 1)
+	epPlayed := upsertTestEpisode(t, setup, feed, "scope-played", "Scope Played Episode", 2)
+	upsertTestEpisode(t, setup, feed, "scope-pending", "Scope Pending Episode", 3)
+	subscribeRaw(t, setup, regUUID, feed.ID)
+	adminScopeExec(t, setup, adminCtxValue(t, setup), `
+		UPDATE media_items SET download_state = 'downloaded', file_size = 1000,
+		       date_published = CURRENT_DATE WHERE id IN ($1, $2)`, epFresh.ID, epPlayed.ID)
+	adminScopeExec(t, setup, adminCtxValue(t, setup), `
+		INSERT INTO reading_progress (media_item_id, user_id, percentage)
+		VALUES ($1, $2, 1.0) ON CONFLICT (media_item_id, user_id)
+		DO UPDATE SET percentage = 1.0`, epPlayed.ID, regUUID)
+
+	feedID := uuid.UUID(feed.ID.Bytes).String()
+
+	qfScoped := func(scope string, children ...map[string]interface{}) url.Values {
+		b, _ := json.Marshal(map[string]interface{}{"scope": scope, "mode": "all", "children": children})
+		return url.Values{"qf": {string(b)}}
+	}
+	const booksScope = "books"
+	const episodesScope = "episodes"
+
+	search := func(p url.Values) []string {
+		rows := p
+		status, body := qfSearch(t, setup, setup.RegularToken, rows)
+		// 404 is the endpoint's pinned no-results contract — an empty set.
+		require.Contains(t, []int{http.StatusOK, http.StatusNotFound}, status, "qf must parse: %v", rows)
+		return qfTitles(t, body)
+	}
+
+	t.Run("books_scope_excludes_podcasts", func(t *testing.T) {
+		// An exact-ish title hits BOTH a book fixture ("Scope Tide") and
+		// the episode fixture if the head leaks; books scope must return
+		// the book, never the episodes.
+		got := search(qfScoped(booksScope, qfRule("title", "is", "Scope Tide")))
+		assert.Equal(t, []string{"Scope Tide"}, got, "books scope returns the book")
+		got = search(qfScoped(booksScope, qfRule("title", "is", "Scope Fresh Episode")))
+		assert.Empty(t, got,
+			"books scope must never return podcast episodes (the composed-head leak is CLOSED)")
+	})
+
+	t.Run("episodes_scope_is_episodes_only", func(t *testing.T) {
+		got := search(qfScoped(episodesScope, qfRule("title", "is", "Scope Fresh Episode")))
+		assert.Equal(t, []string{"Scope Fresh Episode"}, got,
+			"episodes scope: only episodes — books drop")
+	})
+
+	t.Run("episode_rules_evaluate_in_sql", func(t *testing.T) {
+		got := search(qfScoped(episodesScope,
+			qfRule("feed", "in", feedID)))
+		assert.ElementsMatch(t, []string{"Scope Fresh Episode", "Scope Played Episode", "Scope Pending Episode"},
+			got, "feed-in matches every episode of the feed (download state is a separate rule)")
+
+		got = search(qfScoped(episodesScope,
+			qfRule("downloaded", "is_true")))
+		assert.ElementsMatch(t, []string{"Scope Fresh Episode", "Scope Played Episode"},
+			got, "downloaded:true drops the pending episode")
+
+		got = search(qfScoped(episodesScope,
+			qfRule("played", "is_false"),
+			qfRule("downloaded", "is_true")))
+		assert.ElementsMatch(t, []string{"Scope Fresh Episode"}, got,
+			"played:false + downloaded = the unplayed playable episode (viewer progress)")
+
+		got = search(qfScoped(episodesScope,
+			qfRule("played", "is_true")))
+		assert.ElementsMatch(t, []string{"Scope Played Episode"}, got,
+			"played:true matches the finished episode")
+
+		got = search(qfScoped(episodesScope,
+			qfRule("published_date", "within_days", "7"),
+			qfRule("downloaded", "is_true")))
+		assert.ElementsMatch(t, []string{"Scope Fresh Episode", "Scope Played Episode"},
+			got, "published-within includes the dated episodes")
+	})
+
+	t.Run("episode_fields_are_400_in_books_scope", func(t *testing.T) {
+		p := qfScoped(booksScope, qfRule("played", "is_true"))
+		req, _ := http.NewRequest("GET", setup.Server.URL+"/api/media-items/search?"+p.Encode(), nil)
+		req.Header.Set("Authorization", "Bearer "+setup.RegularToken)
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer func() { _ = resp.Body.Close() }()
+		assert.Equal(t, http.StatusBadRequest, resp.StatusCode,
+			"episode-only fields are rejected in books trees at parse time")
+	})
+}
+
 func TestFilterUserRelativeFields(t *testing.T) {
 	setup := setupTestServer(t)
 	t.Cleanup(func() { _ = setup.Close() })
@@ -346,12 +455,17 @@ func TestFilterUserRelativeFields(t *testing.T) {
 		aID, wickID, aID, tideID)
 
 	var collID pgtype.UUID
-	err := setup.DBPool.QueryRow(context.Background(),
+	// Seed as the OWNER (collections RLS, 2026-10-31): the insert
+	// predicate wants actor == owner, and the item/cleanup writes want
+	// the same identity — the admin write-escape covers SYSTEM rows only.
+	err := database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(aID),
 		`INSERT INTO collections (user_id, name) VALUES ($1, $2) RETURNING id`,
 		aID, fmt.Sprintf("Test Builder Coll %d", time.Now().UnixNano())).Scan(&collID)
 	require.NoError(t, err)
-	t.Cleanup(func() { _ = setup.DB.DeleteCollection(ctx, collID) })
-	seedExec(t, setup.DBPool,
+	t.Cleanup(func() {
+		scopeExecAs(t, setup, aID, `DELETE FROM collections WHERE id = $1`, collID)
+	})
+	scopeExecAs(t, setup, aID,
 		`INSERT INTO collection_items (collection_id, media_item_id) VALUES ($1,$2)`, collID, tideID)
 
 	titlesFor := func(token string, qf string) []string {
@@ -433,7 +547,6 @@ func TestFilterSuggestionsUnderRules(t *testing.T) {
 	libUUID, _ := builderFixtureLib(t, setup, userID, "Sug")
 
 	// Add a second distinct author+genre pair (trigram-disjoint).
-	ctx := context.Background()
 	_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
 		Title:     "Sug Dune",
@@ -537,6 +650,16 @@ func TestFilterSuggestionsUnderRules(t *testing.T) {
 	}
 	assert.True(t, found, "the visible library is offered")
 
+	// ID LOOKUP (2026-11-01): typing a stored ID resolves its label —
+	// the builder's post-Apply reload path resolves stored ids to names
+	// through this same call.
+	status, results = suggest("library", libUUID.String(), "")
+	require.Equal(t, http.StatusOK, status)
+	require.NotEmpty(t, results, "the id lookup returns its row")
+	assert.Equal(t, libUUID.String(), results[0]["value"])
+	disp, _ := results[0]["display"].(string)
+	assert.Contains(t, disp, "Test Builder", "the id resolves to the library NAME")
+
 	// BROWSE the library field UNDER rules (the blank-typed click): the
 	// id-source query must not choke on the unused typed parameter and
 	// must list exactly the library holding the surviving books.
@@ -561,16 +684,21 @@ func TestFilterSuggestionsUnderRules(t *testing.T) {
 	// offered with the surviving count; zero-match containers never are.
 	userA := getRegularUserID(t, setup.DB)
 	var collID pgtype.UUID
-	err = setup.DBPool.QueryRow(context.Background(),
+	// Seed as the OWNER (collections RLS, 2026-10-31) — same identity
+	// rule as the first seeding site in this file.
+	ownerID := pgtype.UUID{Bytes: [16]byte(userA), Valid: true}
+	err = database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(ownerID),
 		`INSERT INTO collections (user_id, name) VALUES ($1, $2) RETURNING id`,
-		pgtype.UUID{Bytes: [16]byte(userA), Valid: true},
+		ownerID,
 		fmt.Sprintf("Test Builder Sug Coll %d", time.Now().UnixNano())).Scan(&collID)
 	require.NoError(t, err)
-	t.Cleanup(func() { _ = setup.DB.DeleteCollection(ctx, collID) })
+	t.Cleanup(func() {
+		scopeExecAs(t, setup, ownerID, `DELETE FROM collections WHERE id = $1`, collID)
+	})
 	var tideID pgtype.UUID
 	err = setup.DBPool.QueryRow(context.Background(), `SELECT id FROM media_items WHERE title = $1`, "Sug Tide").Scan(&tideID)
 	require.NoError(t, err)
-	seedExec(t, setup.DBPool,
+	scopeExecAs(t, setup, ownerID,
 		`INSERT INTO collection_items (collection_id, media_item_id) VALUES ($1, $2)`, collID, tideID)
 
 	status, results = suggest("collection", " ", "")
@@ -775,3 +903,85 @@ func TestFilterFlatEquivalence(t *testing.T) {
 	require.Equal(t, statusFlat, statusTree, "same result status")
 	assert.ElementsMatch(t, qfTitles(t, flatRows), qfTitles(t, treeRows))
 }
+
+// ---- deep group nesting (2026-11-01 group ALL/ANY header toggle): ----
+// the UI can now produce 3+-level mixed-mode trees; pin the engine's
+// parenthesized evaluation for the user's target structure
+// GROUP(GROUP(Field and (Field or Field)) or GROUP(Field and Field and
+// (Field or Field)) and GROUP(Field)) — plus a suggestion request
+// carrying a nested-any constraint (the mode-aware menu under real
+// nesting) — must be 200, never the empty-group 400.
+
+func TestFilterDeepGroupNesting(t *testing.T) {
+	setup := setupTestServer(t)
+	t.Cleanup(func() { _ = setup.Close() })
+
+	userID := getRegularUserID(t, setup.DB)
+	libUUID, _ := builderFixtureLib(t, setup, userID, "Deep")
+
+	titles := func(qf string) []string {
+		p := url.Values{"library_id": {libUUID.String()}, "qf": {qf}}
+		status, rows := qfSearch(t, setup, setup.RegularToken, p)
+		require.Contains(t, []int{http.StatusOK, http.StatusNotFound}, status)
+		return qfTitles(t, rows)
+	}
+
+	// root ALL[
+	//   ANY[ ALL[fantasy, ANY[>=250p, abridged]] ,  ALL[Dar, >=500p] ],
+	//   author not_contains Quill
+	// ]
+	// => Tide (fantasy + 300p), Wick (Dar + 700p); Fen dies at the root
+	// AND (Quill); Stone fails branch A (history) and branch B (Voss).
+	deep := map[string]interface{}{
+		"mode": "all",
+		"children": []interface{}{
+			map[string]interface{}{
+				"mode": "any",
+				"children": []interface{}{
+					map[string]interface{}{
+						"mode": "all",
+						"children": []interface{}{
+							qfRule("genre", "is", "fantasy"),
+							map[string]interface{}{
+								"mode": "any",
+								"children": []interface{}{
+									qfRule("page_count", "at_least", "250"),
+									qfRule("abridged", "is_true"),
+								},
+							},
+						},
+					},
+					map[string]interface{}{
+						"mode": "all",
+						"children": []interface{}{
+							qfRule("author", "contains", "Dar"),
+							qfRule("page_count", "at_least", "500"),
+						},
+					},
+				},
+			},
+			qfRule("author", "not_contains", "Quill"),
+		},
+	}
+	deepJSON, merr := json.Marshal(deep)
+	require.NoError(t, merr)
+	got := titles(string(deepJSON))
+	assert.ElementsMatch(t, []string{"Deep Tide", "Deep Wick"}, got,
+		"3-level mixed-mode nesting evaluates parenthesized")
+
+	// The same shape riding the SUGGEST endpoint (the mode-aware menu's
+	// constraint) — nested any must be a 200, never the empty-group 400.
+	p := url.Values{
+		"library_id": {libUUID.String()},
+		"author":     {""},
+		"limit":      {"20"},
+		"qf":         {string(deepJSON)},
+	}
+	req, _ := http.NewRequest("GET", setup.Server.URL+"/api/media-items/search?"+p.Encode(), nil)
+	req.Header.Set("Authorization", "Bearer "+setup.RegularToken)
+	resp, err := http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	defer func() { _ = resp.Body.Close() }()
+	assert.Equal(t, http.StatusOK, resp.StatusCode,
+		"a nested-any constraint rides the suggestion endpoint cleanly: %s", p.Encode())
+}

cmd/server/tests/playlist_collections_test.go

@@ -13,6 +13,8 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/require"
+
+	"bookhoard/internal/database"
 )
 
 // A2c end-to-end: an ABS sidecar whose series array mixes a real series and
@@ -67,13 +69,14 @@ func TestPlaylistCollectionsEndToEnd(t *testing.T) {
 	require.NotEmpty(t, foundPath)
 
 	// (b) The playlist collection exists with provenance, dashboard pin,
-	// and the item at reading position 7.
+	// and the item at reading position 7. Owner-scoped read: collections
+	// RLS (2026-10-31) hides the row from the pool session's SeedIdentity.
 	adminUUIDStr := adminID.String()
 	var collID uuid.UUID
 	var collName, collDesc string
 	var showOnDashboard bool
 	var viewSettingsRaw []byte
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(adminID),
 		`SELECT id, name, description, show_on_dashboard, view_settings
 		 FROM collections WHERE user_id = $1 AND name = 'The Tagged Saga (Reading Order)'`,
 		adminID).Scan(&collID, &collName, &collDesc, &showOnDashboard, &viewSettingsRaw))
@@ -85,7 +88,9 @@ func TestPlaylistCollectionsEndToEnd(t *testing.T) {
 
 	var position *int32
 	var itemCount int
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	// Owner-scoped reads: collections RLS (2026-10-31) — items ride the
+	// parent's readability, so the pool session's SeedIdentity sees none.
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(adminID),
 		`SELECT ci.position, COUNT(*) OVER () FROM collection_items ci
 		 WHERE ci.collection_id = $1`, collID).Scan(&position, &itemCount))
 	require.Equal(t, 1, itemCount)
@@ -96,11 +101,11 @@ func TestPlaylistCollectionsEndToEnd(t *testing.T) {
 	// (c) Rescan: no duplicate collection, no duplicate membership.
 	scanTestFolder(t, setup, adminID, folder)
 	var collectionCount, membershipCount int
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(adminID),
 		`SELECT COUNT(*) FROM collections WHERE user_id = $1 AND name = 'The Tagged Saga (Reading Order)'`,
 		adminID).Scan(&collectionCount))
 	require.Equal(t, 1, collectionCount)
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(adminID),
 		`SELECT COUNT(*) FROM collection_items WHERE collection_id = $1`, collID).Scan(&membershipCount))
 	require.Equal(t, 1, membershipCount)
 
@@ -131,7 +136,9 @@ func TestPlaylistCollectionsEndToEnd(t *testing.T) {
 	// (e) hide_finished + Up Next + completion marker.
 	// Flip the collection's flag on, mark the single item finished for the
 	// admin, and the dashboard section becomes Complete with no items.
-	_, err = setup.DBPool.Exec(context.Background(),
+	// Owner-or-admin UPDATE policy: run as ADMIN (collections RLS,
+	// 2026-10-31).
+	adminScopeExec(t, setup, adminCtxValue(t, setup),
 		`UPDATE collections SET view_settings = view_settings || '{"hide_finished": true}'::jsonb WHERE id = $1`, collID)
 	require.NoError(t, err)
 	_, err = setup.DBPool.Exec(context.Background(),

cmd/server/tests/resume_rewind_test.go

@@ -0,0 +1,123 @@
+package main
+
+// Resume rewind (per-user server setting): seconds before the saved
+// position the audiobook/podcast player starts (0 = exact resume).
+// Contract: the profile endpoint owns reads/writes with a strict
+// 0/5/10 allow-list (the request shape is the keep_screen_awake string
+// precedent — the form select must be able to send an explicit Off),
+// and the chapters payload carries the value so every client (web +
+// Android, incl. the Auto service) gets it with its existing fetch.
+// All writes ride the fresh per-test regular user — the shared admin
+// account is never touched (AGENTS doctrine). Fixture book lives in a
+// test-named library that cascades away with the library delete.
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+func TestAudioResumeRewind(t *testing.T) {
+	setup := setupTestServer(t)
+	t.Cleanup(func() { _ = setup.Close() })
+
+	admin, _ := moveTestAdminID(t, setup)
+	libID, folder := audioTestLibrary(t, setup, fmt.Sprintf("Test Resume Rewind %d", time.Now().UnixNano()))
+	t.Cleanup(func() { deleteLibraries(t, setup, libID) })
+
+	// 664 Hz tone: not the shared helper's 440 or the speed test's 552,
+	// so the scanner's content dedup never skips this book.
+	writeTestTrackTone(t, filepath.Join(folder, "Rewind Book", "01 one.mp3"), 664)
+	scanTestFolder(t, setup, admin, folder)
+
+	var bookPath string
+	for _, item := range listLibraryAudioItems(t, setup, libID) {
+		if strings.Contains(filepath.ToSlash(item.FilePath), "Rewind Book") && bookPath == "" {
+			bookPath = item.FilePath
+		}
+	}
+	require.NotEmpty(t, bookPath, "Rewind Book item must exist")
+	book, found := findAudioItemByPath(t, setup, libID, bookPath)
+	require.True(t, found)
+	bookID := uuid.UUID(book.ID.Bytes)
+
+	client := &http.Client{}
+	token := setup.RegularToken
+	authed := func(method, url, body string) (*http.Response, func()) {
+		var req *http.Request
+		if body == "" {
+			req, _ = http.NewRequest(method, url, nil)
+		} else {
+			req, _ = http.NewRequest(method, url, strings.NewReader(body))
+			req.Header.Set("Content-Type", "application/json")
+		}
+		req.Header.Set("Authorization", "Bearer "+token)
+		resp, err := client.Do(req)
+		require.NoError(t, err)
+		return resp, func() { _ = resp.Body.Close() }
+	}
+	getPayload := func(itemID uuid.UUID) (rewind int) {
+		resp, closer := authed("GET", setup.Server.URL+"/api/media-items/"+itemID.String()+"/chapters", "")
+		defer closer()
+		require.Equal(t, http.StatusOK, resp.StatusCode)
+		var data struct {
+			ResumeRewindSeconds int `json:"resume_rewind_seconds"`
+		}
+		require.NoError(t, json.NewDecoder(resp.Body).Decode(&data))
+		return data.ResumeRewindSeconds
+	}
+	getProfileRewind := func() int {
+		resp, closer := authed("GET", setup.Server.URL+"/api/auth/profile", "")
+		defer closer()
+		require.Equal(t, http.StatusOK, resp.StatusCode)
+		var profile struct {
+			AudioResumeRewind int `json:"audio_resume_rewind_seconds"`
+		}
+		require.NoError(t, json.NewDecoder(resp.Body).Decode(&profile))
+		return profile.AudioResumeRewind
+	}
+
+	t.Run("defaults to off (exact resume)", func(t *testing.T) {
+		require.Equal(t, 0, getProfileRewind())
+		require.Equal(t, 0, getPayload(bookID))
+	})
+
+	t.Run("profile PUT selects 5 and rides the chapters payload", func(t *testing.T) {
+		resp, closer := authed("PUT", setup.Server.URL+"/api/auth/profile", `{"audio_resume_rewind_seconds":"5"}`)
+		defer closer()
+		require.Equal(t, http.StatusOK, resp.StatusCode)
+		require.Equal(t, 5, getProfileRewind())
+		require.Equal(t, 5, getPayload(bookID))
+	})
+
+	t.Run("non-allow-listed values are rejected and change nothing", func(t *testing.T) {
+		for _, body := range []string{`{"audio_resume_rewind_seconds":"7"}`, `{"audio_resume_rewind_seconds":"-5"}`, `{"audio_resume_rewind_seconds":"abc"}`} {
+			resp, closer := authed("PUT", setup.Server.URL+"/api/auth/profile", body)
+			require.Equal(t, http.StatusBadRequest, resp.StatusCode)
+			closer()
+		}
+		require.Equal(t, 5, getProfileRewind())
+	})
+
+	t.Run("explicit off resets to 0 everywhere", func(t *testing.T) {
+		resp, closer := authed("PUT", setup.Server.URL+"/api/auth/profile", `{"audio_resume_rewind_seconds":"0"}`)
+		defer closer()
+		require.Equal(t, http.StatusOK, resp.StatusCode)
+		require.Equal(t, 0, getProfileRewind())
+		require.Equal(t, 0, getPayload(bookID))
+	})
+
+	t.Run("JSON clients that omit the key leave it untouched", func(t *testing.T) {
+		resp, closer := authed("PUT", setup.Server.URL+"/api/auth/profile", `{"timezone":"UTC"}`)
+		defer closer()
+		require.Equal(t, http.StatusOK, resp.StatusCode)
+		require.Equal(t, 0, getProfileRewind())
+	})
+}

cmd/server/tests/scan_state_test.go

@@ -207,12 +207,13 @@ func TestScanManifestLifecycle(t *testing.T) {
 	require.NoError(t, os.WriteFile(opfPath, []byte(`{"title":"Manifesu Book","series":["Lifecycle Saga (Reading Order) #1"]}`), 0644))
 	scanTestFolder(t, setup, admin, folder)
 	var collCount int
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	// Owner-scoped read: collections RLS (2026-10-31).
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(admin),
 		`SELECT COUNT(*) FROM collections WHERE name = 'Lifecycle Saga (Reading Order)' AND user_id = $1`, admin,
 	).Scan(&collCount))
 	assert.Equal(t, 1, collCount, "reading-order sidecar added to an existing book creates its collection")
 	scanTestFolder(t, setup, admin, folder)
-	require.NoError(t, setup.DBPool.QueryRow(context.Background(),
+	require.NoError(t, database.NewScopedDB(setup.DBPool).QueryRow(ownerSeedCtx(admin),
 		`SELECT COUNT(*) FROM collections WHERE name = 'Lifecycle Saga (Reading Order)' AND user_id = $1`, admin,
 	).Scan(&collCount))
 	assert.Equal(t, 1, collCount, "rescan is idempotent — no duplicate collection")

cmd/server/tests/test_helpers_test.go

@@ -329,6 +329,22 @@ func seedCtx() context.Context {
 	return rls.WithUser(context.Background(), rls.SeedIdentity)
 }
 
+// ownerSeedCtx returns a context carrying a fixture user's identity,
+// for seeding rows OWNED by that user. Collections RLS (2026-10-31):
+// the write predicates want actor == owner for non-system rows (the
+// admin write-escape covers SYSTEM collections only), and reads under
+// the pool session's SeedIdentity see nothing.
+func ownerSeedCtx(userID pgtype.UUID) context.Context {
+	return rls.WithUser(context.Background(), userID)
+}
+
+// scopeExecAs is adminScopeExec's generic form: raw SQL under ANY
+// declared identity. Use it (with the row's OWNER) for fixture writes
+// to non-system collections — see ownerSeedCtx.
+func scopeExecAs(t *testing.T, setup *TestServerSetup, userID pgtype.UUID, sql string, args ...any) {
+	adminScopeExec(t, setup, userID, sql, args...)
+}
+
 // seedExec runs a raw statement against the pool under the seed
 // identity. The bare pool bypasses ScopedDB (nothing reads the ctx for
 // the GUC), so governed tables need the identity declared manually
@@ -356,7 +372,12 @@ func uuidToPGType(u uuid.UUID) pgtype.UUID {
 
 // createDefaultCollectionsForUser creates the 4 default system collections for a user
 func createDefaultCollectionsForUser(t *testing.T, db *database.Queries, userID pgtype.UUID) {
-	ctx := context.Background()
+	// Owner-scoped seeding: the collections RLS policies (2026-10-31)
+	// need an acting identity, and the harness seeds before any JWT —
+	// the same bootstrap fix as CreateDefaultCollectionsForUser in
+	// internal/handlers/auth.go. Owner == actor, so SELECT sees the
+	// rows, the INSERT passes, and the heal-UPDATE passes.
+	ctx := rls.WithUser(context.Background(), userID)
 	// Canonical Title-case names — the same list the registration seed
 	// (CreateDefaultCollectionsForUser) and RestoreSystemCollection use.
 	// A stale kebab-case copy lived here once and duplicated every
@@ -596,10 +617,13 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 	worker := services.NewWorker(3, connManager)
 	services.WorkerInstance = worker
 	jobsHandler := handlers.NewJobsHandler(queries, worker)
-	collectionHandler := handlers.NewCollectionHandler(queries, libraryService, connManager)
+	// One composed-engine service for search AND the collection
+	// subsystem (item 3.2 — mirrors main.go).
+	collectionSearchService := services.NewSearchService(queries, scopedDB)
+	collectionHandler := handlers.NewCollectionHandler(queries, libraryService, connManager, collectionSearchService)
 	filtersHandler := handlers.NewFiltersHandler(queries)
-	dashboardService := services.NewDashboardService(queries)
-	dashboardHandler := handlers.NewDashboardHandler(queries)
+	dashboardService := services.NewDashboardService(queries, collectionSearchService)
+	dashboardHandler := handlers.NewDashboardHandler(queries, collectionSearchService)
 	statisticsService := services.NewStatisticsService(queries)
 	statsHandler := handlers.NewStatsHandler(statisticsService)
 	seriesHandler := handlers.NewSeriesHandler(queries)
@@ -769,11 +793,15 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 	// run's creates die on UNIQUE(user_id, name) — the "collections
 	// 500-panic" rot. System collections are skipped (permanent rows).
 	// Same convention as the library pass: names containing "test".
-	adminColls, cerr := queries.GetCollectionsByUser(ctx, pgtype.UUID{Bytes: adminUUID, Valid: true})
+	// Swept under the OWNER's identity: collections RLS (2026-10-31)
+	// makes unscoped reads return nothing, which would silently turn
+	// this cleanup into a no-op.
+	adminScope := rls.WithUser(ctx, pgtype.UUID{Bytes: adminUUID, Valid: true})
+	adminColls, cerr := queries.GetCollectionsByUser(adminScope, pgtype.UUID{Bytes: adminUUID, Valid: true})
 	if cerr == nil {
 		for _, coll := range adminColls {
 			if !coll.IsSystemCollection.Bool && strings.Contains(strings.ToLower(coll.Name), "test") {
-				queries.DeleteCollection(ctx, coll.ID)
+				queries.DeleteCollection(adminScope, coll.ID)
 			}
 		}
 	}
@@ -847,11 +875,13 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 
 		// Same pass for test-created COLLECTIONS (the "collections
 		// 500-panic" rot: they lingered forever and poisoned later runs).
-		adminColls, cerr := queries.GetCollectionsByUser(ctx, pgtype.UUID{Bytes: adminUUID, Valid: true})
+		// Owner-scoped for the same RLS reason as the setup sweep.
+		adminScope := rls.WithUser(ctx, pgtype.UUID{Bytes: adminUUID, Valid: true})
+		adminColls, cerr := queries.GetCollectionsByUser(adminScope, pgtype.UUID{Bytes: adminUUID, Valid: true})
 		if cerr == nil {
 			for _, coll := range adminColls {
 				if !coll.IsSystemCollection.Bool && strings.Contains(strings.ToLower(coll.Name), "test") {
-					queries.DeleteCollection(ctx, coll.ID)
+					queries.DeleteCollection(adminScope, coll.ID)
 				}
 			}
 		}

database/schema/schema.sql

@@ -48,6 +48,14 @@ ALTER TABLE users ADD COLUMN IF NOT EXISTS default_audio_speed REAL NOT NULL DEF
 -- mid-session. On by default; the profile page's On/Off dropdown owns it.
 ALTER TABLE users ADD COLUMN IF NOT EXISTS keep_screen_awake BOOLEAN NOT NULL DEFAULT TRUE;
 
+-- Audio resume rewind: seconds before the saved position the
+-- audiobook/podcast player starts (on open-resume AND again on every
+-- genuine unpause — the re-orientation gap, never stacked). Strict
+-- allow-list 0/5/10 enforced handler-side; 0 = exact resume. The
+-- profile page's dropdown owns it; the chapters payload carries it to
+-- every client (web + Android, incl. the car path).
+ALTER TABLE users ADD COLUMN IF NOT EXISTS audio_resume_rewind_seconds INT NOT NULL DEFAULT 0;
+
 -- Create system_settings table
 CREATE TABLE IF NOT EXISTS system_settings (
     id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
@@ -1341,7 +1349,9 @@ CREATE TABLE IF NOT EXISTS collections (
     description TEXT,
     color VARCHAR(7),
     icon VARCHAR(50),
-    auto_assign_rules JSONB,
+    -- The unified filter tree (plan item 3.2): when present the qf
+    -- engine drives membership; see FilterTree. NULL = static.
+    filter_tree JSONB,
     view_settings JSONB,
     show_on_dashboard BOOLEAN DEFAULT false,
     query_type TEXT DEFAULT 'filter',
@@ -1357,12 +1367,23 @@ CREATE TABLE IF NOT EXISTS collections (
 -- the row id (and everything referencing it) never churn.
 ALTER TABLE collections ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ;
 
+-- Legacy rules-array columns RETIRED (2026-10-31): the unified filter
+-- tree is the only smart-membership storage. No production row ever
+-- carried a rules array or a non-default match mode (verified), so the
+-- columns drop clean; the DROPs are the idempotent heal for databases
+-- created before this change.
+ALTER TABLE collections DROP COLUMN IF EXISTS auto_assign_rules;
+ALTER TABLE collections DROP COLUMN IF EXISTS rule_match_mode;
+
+-- Smart collections in the UNIFIED filter engine (plan item 3.2): the
+-- qf tree (same DSL as saved filters, See FilterTree). NULL = static.
+ALTER TABLE collections ADD COLUMN IF NOT EXISTS filter_tree JSONB;
+
 CREATE INDEX IF NOT EXISTS idx_collections_user_id ON collections(user_id);
 
 -- Index for dashboard queries
 CREATE INDEX IF NOT EXISTS idx_collections_dashboard ON collections(user_id, show_on_dashboard, priority)
     WHERE show_on_dashboard = true;
-
 -- Create user_dashboard_preferences table
 CREATE TABLE IF NOT EXISTS user_dashboard_preferences (
     id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
@@ -1628,12 +1649,19 @@ CREATE INDEX IF NOT EXISTS idx_dictionary_word ON dictionary_cache(word);
 CREATE TABLE IF NOT EXISTS reader_settings (
   id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
   user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-  setting_key VARCHAR(50) NOT NULL,
+  setting_key VARCHAR(120) NOT NULL,
   setting_value JSONB NOT NULL,
   updated_at TIMESTAMPTZ DEFAULT NOW(),
   UNIQUE(user_id, setting_key)
 );
 
+-- Key-width headroom (podcast plan §10 R5, item 2.1): the composite
+-- `podcast_order:<uuid>` key sits at exactly 50 chars, and future
+-- per-feed/per-collection preference keys must not be forced to
+-- payload-stuff by a column width. Widening a varchar is metadata-only
+-- (no table rewrite); idempotent on every boot.
+ALTER TABLE reader_settings ALTER COLUMN setting_key TYPE VARCHAR(120);
+
 CREATE INDEX IF NOT EXISTS idx_reader_settings_user ON reader_settings(user_id);
 
 -- PDF bookmarks (custom user bookmarks)
@@ -2154,3 +2182,117 @@ CREATE POLICY p_podcast_feeds_delete ON podcast_feeds
 -- policy's lookup table, and a user must always see their own
 -- subscription rows (subscribe -> visibility is a single INSERT).
 -- ============================================================
+-- ── collections + collection_items (2026-10-31): ownership at the DB ──
+-- layer, same doctrine as media_items/podcast_feeds above. The
+-- predicates live in FUNCTIONS (not inline) so a future sharing model
+-- edits exactly one place: add the share-table EXISTS branch inside
+-- app_can_read_collection / app_can_write_collection. The functions are
+-- PURE over their arguments — they never query collections — so the
+-- policies cannot recurse, FORCE RLS safe. Reads are authenticated-
+-- allow (household-readable: any signed-in identity, SeedIdentity
+-- harness included); WRITES are owner-or-admin — that is the
+-- enforcement of record for Update/Delete/AddBooks, which have no
+-- app-level gate.
+-- ===========================================================
+
+CREATE OR REPLACE FUNCTION app_is_admin() RETURNS BOOLEAN
+LANGUAGE sql STABLE SECURITY DEFINER SET search_path = pg_catalog, public AS $$
+  SELECT EXISTS (
+    SELECT 1 FROM users u
+    WHERE u.id = NULLIF(current_setting('app.user_id', true), '')::uuid
+      AND u.role = 'admin'
+  );
+$$;
+
+CREATE OR REPLACE FUNCTION app_can_read_collection(
+  p_collection_id UUID, p_owner UUID
+) RETURNS BOOLEAN
+LANGUAGE sql STABLE SECURITY DEFINER SET search_path = pg_catalog, public AS $$
+  SELECT NULLIF(current_setting('app.user_id', true), '') IS NOT NULL
+     AND (
+       p_owner = current_setting('app.user_id', true)::uuid
+       OR app_is_admin()
+       -- FUTURE SHARING slot: OR EXISTS (
+       --   SELECT 1 FROM collection_shares cs
+       --   WHERE cs.collection_id = p_collection_id
+       --     AND cs.shared_with_user_id = current_setting('app.user_id', true)::uuid)
+     );
+$$;
+
+CREATE OR REPLACE FUNCTION app_can_write_collection(
+  p_collection_id UUID, p_owner UUID, p_system BOOLEAN
+) RETURNS BOOLEAN
+LANGUAGE sql STABLE SECURITY DEFINER SET search_path = pg_catalog, public AS $$
+  SELECT NULLIF(current_setting('app.user_id', true), '') IS NOT NULL
+     AND (
+       p_owner = current_setting('app.user_id', true)::uuid
+       OR (COALESCE(p_system, false) AND app_is_admin())
+       -- FUTURE SHARING slot: OR EXISTS (
+       --   SELECT 1 FROM collection_shares cs
+       --   WHERE cs.collection_id = p_collection_id
+       --     AND cs.shared_with_user_id = current_setting('app.user_id', true)::uuid
+       --     AND cs.permission IN ('edit'))
+     );
+$$;
+
+ALTER TABLE collections ENABLE ROW LEVEL SECURITY;
+ALTER TABLE collections FORCE ROW LEVEL SECURITY;
+
+DROP POLICY IF EXISTS p_collections_select ON collections;
+CREATE POLICY p_collections_select ON collections
+  FOR SELECT USING (app_can_read_collection(id, user_id));
+DROP POLICY IF EXISTS p_collections_insert ON collections;
+CREATE POLICY p_collections_insert ON collections
+  FOR INSERT WITH CHECK (
+    user_id = NULLIF(current_setting('app.user_id', true), '')::uuid
+    OR app_is_admin()
+  );
+DROP POLICY IF EXISTS p_collections_update ON collections;
+CREATE POLICY p_collections_update ON collections
+  FOR UPDATE
+  USING (app_can_write_collection(id, user_id, is_system_collection))
+  WITH CHECK (app_can_write_collection(id, user_id, is_system_collection));
+DROP POLICY IF EXISTS p_collections_delete ON collections;
+CREATE POLICY p_collections_delete ON collections
+  FOR DELETE USING (app_can_write_collection(id, user_id, is_system_collection));
+
+ALTER TABLE collection_items ENABLE ROW LEVEL SECURITY;
+ALTER TABLE collection_items FORCE ROW LEVEL SECURITY;
+
+-- Items ride their PARENT's accessibility: the collections SELECT
+-- policy auto-applies inside these EXISTS subqueries.
+DROP POLICY IF EXISTS p_collection_items_select ON collection_items;
+CREATE POLICY p_collection_items_select ON collection_items
+  FOR SELECT USING (EXISTS (
+    SELECT 1 FROM collections c
+    WHERE c.id = collection_items.collection_id
+  ));
+DROP POLICY IF EXISTS p_collection_items_insert ON collection_items;
+CREATE POLICY p_collection_items_insert ON collection_items
+  FOR INSERT WITH CHECK (EXISTS (
+    SELECT 1 FROM collections c
+    WHERE c.id = collection_items.collection_id
+      AND app_can_write_collection(c.id, c.user_id, c.is_system_collection)
+  ));
+DROP POLICY IF EXISTS p_collection_items_update ON collection_items;
+CREATE POLICY p_collection_items_update ON collection_items
+  FOR UPDATE
+  USING (EXISTS (
+    SELECT 1 FROM collections c
+    WHERE c.id = collection_items.collection_id
+      AND app_can_write_collection(c.id, c.user_id, c.is_system_collection)
+  ))
+  WITH CHECK (EXISTS (
+    SELECT 1 FROM collections c
+    WHERE c.id = collection_items.collection_id
+      AND app_can_write_collection(c.id, c.user_id, c.is_system_collection)
+  ));
+DROP POLICY IF EXISTS p_collection_items_delete ON collection_items;
+CREATE POLICY p_collection_items_delete ON collection_items
+  FOR DELETE USING (EXISTS (
+    SELECT 1 FROM collections c
+    WHERE c.id = collection_items.collection_id
+      AND app_can_write_collection(c.id, c.user_id, c.is_system_collection)
+  ));
+
+

docs/contract_pins.md

@@ -468,3 +468,272 @@ never-queued episodes) is stamped from the `podcast_queue_seq` SEQUENCE
 at enqueue time so claim order = enqueue order (the effective listening
 order). Raw-row pins (TestContractPin_MediaListBothBranches →
 rawRowKeys) whitelist the key. Nothing removed, nothing renamed.
+
+## 2026-10-30 — episode collections (additive widening, plan item 2/2.3/2.4)
+
+Two shapes widen, both ADDITIVE — nothing removed, nothing renamed:
+
+- **Collections envelope** (`GET /api/collections/:id` → envelopeKeys)
+  gains `rule_match_mode` (smart-collection match semantics, 'any'
+  legacy default | 'all'). Static collections emit the default value.
+- **BookInfo** (every card surface → bookInfoKeys) gains four STABLE
+  keys — `is_episode`, `feed_title`, `download_state`, `hidden` — the
+  episode-collections extras. Adapters that predate episode awareness
+  emit their zero values (`false`/`""`), matching the
+  viewer_percentage precedent (nil-representable, key always present).
+
+## 2026-10-30 — collections envelope gains filter_tree (additive widening, item 3.2)
+
+`GET /api/collections/:id` adds `filter_tree` to the envelope: the
+unified filter tree when the smart collection carries one (item 3.2 —
+tree-driven membership), `null` for legacy/static collections. The
+tree is the same qf DSL as saved filters (`{scope?, mode, children}`).
+Nothing removed, nothing renamed.
+
+## 2026-10-30 — rules endpoints RETIRED (filter-system unification, item 3.4)
+
+The per-rule CRUD endpoints and the preview endpoint are DELETED — the
+unified filter tree (item 3.2) is the only smart-membership authoring
+surface, and the rules PAGE is now the filter builder in the
+collection's scope:
+
+- `POST /api/collections/:id/rules`, `PUT/DELETE
+  /api/collections/:id/rules/:ruleId` — gone (legacy rule arrays still
+  EVALUATE until the collection is rewritten; conversions run at the
+  builder's first Apply via RulesToFilterTree).
+- `POST /api/collections/test-rules` — gone (the builder's live count
+  via /api/media-items/filter-count replaces the preview).
+- `POST /api/collections/preview` STAYS (the dashboard
+  custom-section-builder still consumes it — flagged for its own
+  migration, not silently broken).
+- Legacy compatibility KEPT: `auto_assign_rules` still round-trips in
+  the collections envelope; `PUT /api/collections/:id/match-mode`
+  still serves rules-array collections.
+
+Test-side deletions follow the asymmetry rule: subtests exercising the
+deleted endpoints are gone; their surviving SEMANTICS are pinned in
+their tree form (TestSmartCollections rewritten on trees,
+TestEpisodeCollectionsFilterTree, TestPodcastSmartCollections).
+
+## 2026-10-31 — collections RLS: cross-user detail/writes tighten to 404/no-op
+
+`collections` and `collection_items` joined the RLS-governed tables
+(policies `p_collections_*` / `p_collection_items_*`, predicates
+`app_can_read_collection` / `app_can_write_collection` — the same
+doctrine as the media_items family lens, 2026-10-29). Contract
+changes:
+
+- `GET /api/collections/:id` for another user's collection: was 200
+  (by-id readability), now 404 (row invisible).
+- `PUT /api/collections/:id` cross-user: was ungated success (no
+  app-level ownership check), now 404 — the RLS update touches no
+  rows, and the handler maps ErrNoRows to 404.
+- `POST /api/collections/:id/books` cross-user: was ungated, now 404
+  (rejectSmartMutation's GetCollectionData is RLS-invisible).
+- `DELETE /api/collections/:id` cross-user: still 204, but now a true
+  DB-level no-op (zero rows deleted) instead of an app-level free hit.
+- `PUT /api/collections/:id/view-settings` cross-user: 404 (the owner
+  gate stays as defense-in-depth; the DB is enforcement of record).
+- `PUT .../match-mode` and `.../items/order` keep their app-level 403
+  gates; the DB now backs them.
+- Reads: owner or admin (policy escape); non-owner non-admin users see
+  nothing, anonymous included. Future sharing rides the predicate
+  functions — one EXISTS branch in app_can_read/write_collection, no
+  policy migration.
+
+Test-side: TestCollectionsRLS pins the cross-user matrix end-to-end;
+fixture writes to non-system collections run as the row's OWNER
+(scopeExecAs/ownerSeedCtx) because the admin write-escape covers
+system collections only.
+
+## 2026-10-31 — legacy collection rules surface RETIRED (tree-only storage)
+
+The pre-tree rules machinery is gone — no production row ever carried a
+rules array or a non-default match mode (verified in the dev DB), the
+web never reads the envelope keys, and the Android app consumes none of
+it. Deletions:
+
+- `PUT /api/collections/:id/match-mode` — endpoint retired (it had no
+  doc page). The tree's root `mode` owns any|all semantics now.
+- Envelope: `auto_assign_rules` and `rule_match_mode` are REMOVED from
+  the create/list/detail/update payloads. This entry retracts the
+  2026-10-30 pins that listed them. `collection_type` and `is_smart`
+  stay.
+- Request: `auto_assign_rules`/`rule_match_mode` are no longer accepted
+  on create/update. A create carrying `auto_assign_rules` answers 400
+  naming the retirement — the custom-section builder's legacy save
+  (already failing to bind, verified live) fails loudly instead of
+  silently creating a hollow static section.
+- Storage: the `collections.auto_assign_rules` and
+  `collections.rule_match_mode` columns are DROPPED (idempotent
+  `DROP COLUMN IF EXISTS` in schema.sql).
+- Service: the rules CRUD layer (AddRule/SetRuleEnabled/RemoveRule +
+  validateRule + the UpdateCollectionRulesJSON query),
+  ParseRules/EnabledRules/IsSmartCollection, RulesToFilterTree (+ the
+  SSR preload branch), and the legacy branch of EvaluateSmartMembership
+  are deleted. IsCollectionSmart = tree presence.
+
+KEPT (live consumers): `POST /api/collections/preview` still accepts
+`rules` and evaluates them in memory (the custom-section builder's
+preview button); `include_auto` on the list stays (the Android app
+sends it). The builder's SAVE remains the flagged §12 tree migration.
+
+## 2026-10-31 — custom-section builder save: the flagged tree migration lands
+
+Supersedes the same-day retirement entry's loud-400 stance for the
+builder's payload. `POST /api/collections` now ACCEPTS the builder's
+shape and adapts it at write time:
+
+- `auto_assign_rules` (JSON-encoded array — string or bare) converts to
+  a filter tree via the restored `RulesToFilterTree`; converted trees
+  validate under `ParseFilterTree`, so an unhonorable rule is a 400 at
+  write naming the problem.
+- `match_type` seeds the tree's root mode (`any` default).
+- `manual_book_ids` attach to the created collection after create
+  (unparsable ids skipped — the AddBooks leniency).
+- `show_on_dashboard` persists (new create field).
+- `library_id` remains selection context only (not stored).
+
+Dashboard sections: smart user sections evaluate their tree LIVE —
+`GetUserCollectionItems` merges stored membership with the composed
+engine's matches (deduped, library-scoped, capped at the section
+limit). This exposed and fixed a real wiring bug: every production
+`NewDashboardService` call omitted the search service, so tree
+evaluation through the dashboard could never work (the test harness
+wired it correctly — the gap was production-only). The dashboard
+handler and both inline sites now receive it, and evaluation failures
+log instead of silently emptying a section.
+
+## 2026-11-01 — feed operator vocabulary collapsed (Option A): one name per semantic
+
+The feed field's menu offered `is`/`isn't` alongside `in`/`isn't in` —
+exact synonyms (the clause compiles both pairs to the same `ANY`). The
+MENUS now offer `in`/`isn't in` (+ has/missing) only. This is an
+offered-vocabulary narrowing, not a parse change:
+
+- Stored trees and saved filters carrying `feed is X` / `feed is_not X`
+  PARSE AND EVALUATE FOREVER (`legacyFieldOps` accepts the synonyms at
+  validation — the stored wire is never invalidated).
+- The fields payload (the client's operator menus) no longer carries
+  the duplicates.
+- Client id-cells are uniform: every operator on an id-valued field
+  accepts a set, so all id cells say "pick one or more" and accumulate
+  picks — no per-operator placeholder/pick distinction to explain.
+
+## 2026-11-01 — id labels resolve at render (SSR embed): refresh keeps names
+
+Pages that render a filter tree embed the tree's id→name map at render
+time (`data-id-labels` on the builder mount) — the collection editor
+(stored tree) and the bookshelf (URL `qf`). Before this, refresh showed
+raw uuids: only ids persist in trees; the client's id→label cache dies
+with the page, and the quiet suggest fetch reused the MEDIA-CONSTRAINED
+facet, so an id whose media doesn't match the tree's sibling rules got
+no row and no label (live repro: `feed in [A,B,C] AND title contains
+Chapter` labeled one feed of three — two feeds had no "Chapter"
+episodes).
+
+- `SearchService.FilterTreeLabels` reads the ENTITY tables (no media
+  join, no tree constraint): podcast_feeds and collections are
+  RLS-governed through the scoped handle (invisible ids resolve to
+  nothing); libraries mirror the facet's visibility join; added_by is a
+  plain username lookup. A zero-episode feed resolves its title —
+  pinned (TestRulesPageEmbedsIdLabels), as is the hidden-library
+  non-resolution.
+- The bookshelf drawer also HYDRATES at component init now (no
+  data-tree mount → read the form): the parent's x-init
+  (initBookshelf) runs BEFORE the nested builder component exists
+  (Alpine initializes parents first), so its builderData() call was
+  null and a URL-qf refresh left the drawer with an empty seeded rule
+  while the grid stayed filtered. Init-order contract pinned in
+  filter_builder.test.ts.
+- The quiet suggest fetch remains only as a fallback for trees the SSR
+  never saw (client-side apply flows); embedded labels make it a no-op
+  on refresh.
+
+## 2026-11-01 — unset podcast order defaults to reversed (audiobook-first)
+
+The per-feed listening order (the D5 `podcast_order:<feedID>` KV shown
+in the Order dropdown) resolved its UNSET state to "native" — feed
+document order, which runs newest-first for classic RSS, so an
+audiobook feed played its LAST chapter first. The unset default is now
+`reverse` at every resolution site of that one setting: the podcast
+page list + dropdown (`podcastOrderForFeed`), the player's feed chain
+(reader.go), and the download worker (`orderOverrideFor`).
+
+- Stored overrides are untouched: anyone who picked an order keeps it
+  (native remains a valid, savable choice).
+- No ordering semantics changed — `OrderEpisodes` and the four-option
+  vocabulary are as they were; only the unset fallback flipped.
+- Pinned: the player sequence config carries `"order":"reverse"` and
+  feed position 1 plays LAST for an unset feed; the podcast page's
+  dropdown renders `reverse` selected (TestPodcastPlayerOrderControl,
+  replacing the former native pin).
+
+## 2026-11-01 — new podcast smart collections are BORN reversed
+
+`POST /api/collections` with an EPISODES-scope `filter_tree` seeds
+`view_settings.chain_order = "reverse"` on the new row (merge semantics:
+an explicit client `chain_order` is never clobbered). The dropdown's
+default selection and the chain/page behavior come from the STORED
+value — no resolution-logic changes; books-scope smart collections and
+statics get nothing seeded; existing collections are untouched.
+
+Pinned (TestSmartCollectionBornReversed): episodes seed, explicit-keep,
+books-scope no-seed, static no-seed; TestEpisodeCollectionsFilterTree's
+born-reversed chain/page pins replace the former native expectations
+(which changelog here per the expectation-change rule). One misplaced
+pin from 81e54f89 was corrected while flipping: the API envelope's
+match list is NOT chain-ordered and never was — order pins live on the
+SSR page and the reader chain.
+
+## 2026-11-01 — label endpoint replaces the suggest-facet fallback
+
+`GET /api/filter/labels?field=X&ids=a,b,c` names id-kind filter values
+from their source tables (entity rows only — no media join, no tree
+constraint; visibility/RLS ride the request identity). Non-id fields
+are a 400; ids truncate at the same 100 cap the SSR embed uses.
+
+The client's label resolution (`resolveIdLabels`/`resolveLabelsAsync`)
+now uses ONLY this endpoint. The former fallback — the quiet suggest
+fetch through the MEDIA-CONSTRAINED facet — is deleted: it labeled only
+the ids whose media matched the tree's sibling rules (the live feed
+repro), which mattered exactly where the SSR embed can't reach:
+applying a SAVED filter from a cold bookshelf. The apply flow now
+resolves through the endpoint and rebuilds the chips bar when labels
+land. Pinned (TestFilterLabelsEndpoint): a zero-episode feed resolves
+its title, comma-joined ids resolve together, an unsubscribed feed id
+stays unnamed (RLS), non-id fields are 400.
+
+## 2026-11-01 — the rules-Apply path seeds the reversed default too
+
+PUT /api/collections/:id carrying an EPISODES-scope filter_tree seeds
+`chain_order = "reverse"` when neither the request nor the stored
+view_settings names one — the creation seed's twin: a static collection
+becoming smart lands with the same default a born-smart one gets.
+Explicit values (client-sent or stored — e.g. a deliberate native)
+are never clobbered. Pinned (TestSmartCollectionBornReversed):
+apply-seeds-when-unordered, respects stored native, respects client
+native.
+
+TestPodcastSmartCollections' acceptance pin updated with the same flip:
+the briefing acceptance now starts from the page's FIRST card (feed
+position 5 — the born-reversed default's book order) and chains into
+feed position 1. The acceptance meaning is unchanged: play from what
+you see, chained back-to-back within the live briefing set.
+
+## 2026-11-01 — audio resume rewind setting
+
+- `GET /api/media-items/:id/chapters` gained one ADDITIVE response key:
+  `resume_rewind_seconds` (int, the requesting user's setting; 0 for
+  anonymous). Existing keys unchanged. The web player and the Android
+  app both gate the value through the 0/5/10 allow-list, so servers
+  without the key (absent → 0) degrade to exact resume.
+- `GET /api/auth/profile` now always carries
+  `audio_resume_rewind_seconds` (int, never omitted — 0 is a real
+  value, exact resume). `PUT /api/auth/profile` accepts the key as the
+  keep_screen_awake-style STRING ("0"/"5"/"10") so the profile form's
+  select can send an explicit Off; JSON clients that omit it leave the
+  column untouched, and anything outside {0,5,10} is 400.
+  Pinned (TestAudioResumeRewind): default 0, PUT "5" rides the
+  chapters payload, non-allow-listed rejections change nothing,
+  explicit "0" resets everywhere, omitted key leaves it untouched.

docs/contributing/contributing.md

@@ -4,7 +4,7 @@ Welcome to the Bookhoard contributing documentation. This section contains guide
 
 ## 🚀 Getting Started
 
-- **[Development Guide](Development.md)** - Development workflow and architecture
+- **[Development Guide](development.md)** - Development workflow and architecture
   - Architecture overview
   - Directory structure
   - Local development setup
@@ -14,7 +14,7 @@ Welcome to the Bookhoard contributing documentation. This section contains guide
 
 ## 📋 Project Guidelines
 
-- **[AGENTS.md](../../AGENTS.md)** - Agent/development rules
+- **[AGENTS.md](../contributing/contributing.md)** - Development rules and standards live in the Contributing portal
   - Critical prohibitions
   - Mandatory requirements
   - Error recovery protocol
@@ -22,7 +22,7 @@ Welcome to the Bookhoard contributing documentation. This section contains guide
 
 ## 🤝 How to Contribute
 
-We welcome contributions! Please see our [Development Guide](Development.md) for information on:
+We welcome contributions! Please see our [Development Guide](development.md) for information on:
 
 - Setting up your development environment
 - Understanding the codebase

docs/contributing/development.md

@@ -510,9 +510,9 @@ DEBUG=true
 
 ## 📚 Additional Resources
 
-- [AGENTS.md](../../AGENTS.md) - Agent/development rules
-- [API Reference](../API_REFERENCE.md) - Complete API documentation
-- [Troubleshooting](../TROUBLESHOOTING.md) - Deployment issues
+- [Development rules and standards](contributing.md) - Contributing portal
+- [API Reference](../developer/api/api-reference.md) - Split endpoint docs, indexed from its overview
+- [Troubleshooting](../operations/troubleshooting.md) - Deployment issues
 - [Go Documentation](https://go.dev/doc/)
 - [Echo Framework](https://echo.labstack.com/docs)
 - [pgx Documentation](https://pgx.github.io/pgx/)

docs/developer/api/collections/add_auto_assign_rule.md

@@ -1,89 +0,0 @@
----
-method: POST
-path: /api/collections/:id/rules
-auth: jwt
-area: collections
----
-<!-- source: internal/handlers/collections.go:877 CollectionHandler.AddRule -->
-
-# Add Auto-Assign Rule
-
-Add an automatic book assignment rule to a collection.
-
-**Endpoint**: `POST /api/collections/{id}/rules`
-**Auth**: Required
-**Content-Type**: `application/json`
-
-## Path Parameters
-
-| Parameter | Type          | Required | Description     |
-| --------- | ------------- | -------- | --------------- |
-| id        | string (UUID) | Yes      | Collection UUID |
-
-## Request Body
-
-| Field    | Type          | Required | Description                                                                                                       |
-| -------- | ------------- | -------- | ----------------------------------------------------------------------------------------------------------------- |
-| field    | string        | Yes      | Field to match on (genre, author, series, language, publisher, copyright_year, tags)                              |
-| operator | string        | Yes      | Comparison operator (equals, not_equals, contains, not_contains, starts_with, ends_with, greater_than, less_than) |
-| value    | string/number | Yes      | Value to compare against                                                                                          |
-| priority | integer       | No       | Rule priority (1 = highest, default: 1)                                                                           |
-| enabled  | boolean       | No       | Whether rule is active (default: true)                                                                            |
-
-### Supported Fields
-
-| Field          | Type   | Description                           |
-| -------------- | ------ | ------------------------------------- |
-| genre          | string | Book genre                            |
-| author         | string | Book author                           |
-| series         | string | Book series name                      |
-| language       | string | Book language                         |
-| publisher      | string | Publisher name                        |
-| copyright_year | number | Publication year (numeric comparison) |
-| tags           | string | Book tags                             |
-
-### Supported Operators
-
-| Operator     | Type   | Description                           |
-| ------------ | ------ | ------------------------------------- |
-| equals       | all    | Exact match                           |
-| not_equals   | all    | Not equal                             |
-| contains     | string | Contains substring (case-insensitive) |
-| not_contains | string | Does not contain                      |
-| starts_with  | string | Starts with (case-insensitive)        |
-| ends_with    | string | Ends with (case-insensitive)          |
-| greater_than | number | Greater than                          |
-| less_than    | number | Less than                             |
-
-### Example Request
-
-```json example-request
-{
-  "field": "genre",
-  "operator": "equals",
-  "value": "Science Fiction",
-  "priority": 1,
-  "enabled": true
-}
-```
-
-## Response (201 Created)
-
-```json example-response
-{
-  "collection_id": null,
-  "is_smart": null,
-  "rule": null
-}
-```
-
-## Error Responses
-
-| Code | Description                         |
-| ---- | ----------------------------------- |
-| 400  | Invalid request (validation failed) |
-| 401  | Authentication required             |
-| 404  | Collection not found                |
-| 500  | Internal server error               |
-
-## Try It Out

docs/developer/api/collections/create_collection.md

@@ -23,7 +23,6 @@ Creating a collection whose name already exists for the user returns **409**.
   "color": "#00FF00",
   "icon": "📖",
   "collection_type": "static",
-  "auto_assign_rules": [],
   "view_settings": { "kobo": { "view_mode": "grid" } }
 }
 ```
@@ -39,7 +38,6 @@ Creating a collection whose name already exists for the user returns **409**.
   "color": "#00FF00",
   "icon": "📖",
   "collection_type": "static",
-  "auto_assign_rules": null,
   "view_settings": { "kobo": { "view_mode": "grid" } },
   "book_count": 0,
   "created_at": "2026-10-24 13:57:01.81234 +0000 UTC"
@@ -57,20 +55,13 @@ RFC3339. Treat it as display text; do not parse it as an ISO timestamp.
 | description | string | no | |
 | color | string | no | hex color, e.g. `"#FF5733"` |
 | icon | string | no | emoji |
-| collection_type | string | no | `"static"` (default) or `"smart"`; also implied by non-empty `auto_assign_rules` |
-| auto_assign_rules | array | no | rule objects, see below |
+| collection_type | string | no | `"static"` (default) or `"smart"`; also implied by a `filter_tree` |
 | view_settings | object | no | per-device display preferences |
-
-### Auto-assign rule object
-
-| Field | Type | Required | Notes |
-| ----- | ---- | -------- | ----- |
-| id | string | no | rule id |
-| field | string | yes | one of `genre`, `series`, `author`, `language`, `publisher`, `copyright_year`, `tags` |
-| operator | string | yes | one of `equals`, `not_equals`, `contains`, `not_contains`, `starts_with`, `ends_with`, `greater_than`, `less_than` |
-| value | string | yes | value to compare against |
-| priority | number | no | 1-10; higher values take precedence |
-| enabled | boolean | no | absent = enabled (rules written before this field existed keep matching) |
+| filter_tree | object | no | the unified filter tree (qf DSL); presence makes the collection smart |
+| auto_assign_rules | string \| array | no | custom-section-builder payload — converted to `filter_tree` at write (see custom-section-builder doc) |
+| match_type | string | no | builder payload: `any` (default) or `all` — seeds the converted tree's root mode |
+| manual_book_ids | string\[\] | no | builder payload: attached to the collection after create |
+| show_on_dashboard | boolean | no | pins the collection as a dashboard section |
 
 ## Errors
 

docs/developer/api/collections/get_collection.md

@@ -27,7 +27,6 @@ GET /api/collections/550e8400-e29b-41d4-a716-446655440000
   "description": "Books I want to read soon",
   "color": "#00FF00",
   "icon": "📖",
-  "auto_assign_rules": null,
   "view_settings": { "kobo": { "view_mode": "grid" } },
   "books": [],
   "book_count": 0,
@@ -57,8 +56,8 @@ GET /api/collections/550e8400-e29b-41d4-a716-446655440000
 | description | string | |
 | color | string | |
 | icon | string | |
-| auto_assign_rules | array \| null | |
 | view_settings | object | |
+| filter_tree | object \| null | the unified filter tree (qf DSL); null = static |
 | books | array | book cards in this collection |
 | book_count | number | length of `books` |
 | is_smart | boolean | |

docs/developer/api/collections/list_collections.md

@@ -29,7 +29,6 @@ GET /api/collections?include_auto=true&sort_by=name
       "description": "Books I want to read soon",
       "color": "#00FF00",
       "icon": "📖",
-      "auto_assign_rules": null,
       "created_at": "2026-10-24 13:57:01.81234 +0000 UTC",
       "book_count": 12,
       "is_smart": false
@@ -65,7 +64,6 @@ GET /api/collections?include_auto=true&sort_by=name
 | description | string | |
 | color | string | |
 | icon | string | |
-| auto_assign_rules | array \| null | raw rules JSON; non-null implies smart |
 | created_at | string | Go `time.String()` format |
 | book_count | number | live count; respects `library_id` for smart collections |
 | is_smart | boolean | |

docs/developer/api/collections/remove_auto_assign_rule.md

@@ -1,46 +0,0 @@
----
-method: DELETE
-path: /api/collections/:id/rules/:ruleId
-auth: jwt
-area: collections
----
-<!-- source: internal/handlers/collections.go:960 CollectionHandler.RemoveRule -->
-
-# Remove Auto-Assign Rule
-
-Remove an automatic book assignment rule from a collection.
-
-**Endpoint**: `DELETE /api/collections/{collectionId}/rules/{ruleId}`
-**Auth**: Required
-**Content-Type**: `application/json`
-
-## Path Parameters
-
-| Parameter    | Type          | Required | Description     |
-| ------------ | ------------- | -------- | --------------- |
-| collectionId | string (UUID) | Yes      | Collection UUID |
-| ruleId       | string (UUID) | Yes      | Rule UUID       |
-
-## Response (204 No Content)
-
-Rule deleted successfully. No response body.
-
-```json example-response
-{
-  "collection_id": "550e8400-e29b-41d4-a716-446655440000",
-  "is_smart": true
-}
-```
-
-`is_smart` reflects the collection state AFTER removal — removing the
-last rule converts a smart collection back to static.
-
-## Error Responses
-
-| Code | Description                  |
-| ---- | ---------------------------- |
-| 401  | Authentication required      |
-| 404  | Collection or rule not found |
-| 500  | Internal server error        |
-
-## Try It Out

docs/developer/api/collections/set_chain_order.md

@@ -0,0 +1,48 @@
+---
+method: PUT
+path: /api/collections/:id/view-settings
+auth: jwt
+area: collections
+---
+<!-- source: internal/handlers/collections.go CollectionHandler.SetCollectionChainOrder -->
+
+# Set Collection Chain Order
+
+Sets the curated listening order for the collection's episode sequence
+(plan §10 R2): the chain producer (`buildSmartCollectionSequenceContext`)
+plays `Play as Sequence` in this order. The key merges into the
+collection's `view_settings` JSONB — playlist toggles that share the
+document survive the write. Owner-only.
+
+## Example request
+
+```json example-request
+{
+  "chain_order": "newest"
+}
+```
+
+## Example response
+
+```json example-response
+{
+  "id": "550e8400-e29b-41d4-a716-446655440000",
+  "chain_order": "newest",
+  "view_settings": { "chain_order": "newest" }
+}
+```
+
+## Fields
+
+| Field | Type | Required | Notes |
+| ----- | ---- | -------- | ----- |
+| chain_order | string | Yes | One of `native`, `newest`, `oldest`, `reverse`; `native`/empty removes the stored key |
+
+## Errors
+
+| Status | Body | When |
+| ------ | ---- | ---- |
+| 400 | `{"error": "invalid collection id"}` | malformed id |
+| 400 | `{"error": "chain_order must be one of: native, newest, oldest, reverse"}` | unknown order |
+| 404 | `{"error": "collection not found"}` | unknown id |
+| 401 / 403 | — | missing JWT / not the owner |

docs/developer/api/collections/test_rule.md

@@ -1,79 +0,0 @@
----
-method: POST
-path: /api/collections/test-rules
-auth: jwt
-area: collections
----
-<!-- source: internal/handlers/collections.go:996 CollectionHandler.TestRules -->
-
-# Test Rule
-
-Test which books would match given rules without saving.
-
-**Endpoint**: `POST /api/collections/test-rules`
-**Auth**: Required
-**Content-Type**: `application/json`
-
-## Request Body
-
-| Field | Type  | Required | Description                   |
-| ----- | ----- | -------- | ----------------------------- |
-| rules | array | Yes      | Array of rule objects to test |
-
-### Rule Object
-
-| Field    | Type          | Required | Description                                                                                                       |
-| -------- | ------------- | -------- | ----------------------------------------------------------------------------------------------------------------- |
-| field    | string        | Yes      | Field to match on (genre, author, series, language, publisher, copyright_year, tags)                              |
-| operator | string        | Yes      | Comparison operator (equals, not_equals, contains, not_contains, starts_with, ends_with, greater_than, less_than) |
-| value    | string/number | Yes      | Value to compare against                                                                                          |
-
-### Example Request
-
-```json example-request
-{
-  "rules": [
-    {
-      "field": "genre",
-      "operator": "equals",
-      "value": "Science Fiction"
-    },
-    {
-      "field": "author",
-      "operator": "contains",
-      "value": "Asimov"
-    }
-  ]
-}
-```
-
-## Response (200 OK)
-
-```json example-response
-{
-  "matches": [
-    {
-      "media_item_id": "660e8400-e29b-41d4-a716-446655440000",
-      "title": "Foundation",
-      "author": "Isaac Asimov",
-      "cover_image_path": "/covers/foundation.jpg",
-      "match_reason": "Matched rule: genre equals Science Fiction"
-    }
-  ],
-  "total": 42
-}
-```
-
-## Use Case
-
-Test rules before creating a collection to verify correct book matching. This endpoint shows which books would be added without actually modifying any collections.
-
-## Error Responses
-
-| Code | Description                         |
-| ---- | ----------------------------------- |
-| 400  | Invalid request (validation failed) |
-| 401  | Authentication required             |
-| 500  | Internal server error               |
-
-## Try It Out

docs/developer/api/collections/update_collection.md

@@ -24,7 +24,6 @@ set `view_settings.hide_finished` / `view_settings.show_up_next` directly.
   "description": "Updated description",
   "color": "#33CCFF",
   "icon": "📚",
-  "auto_assign_rules": [],
   "view_settings": { "hide_finished": true },
   "hide_finished": ["true"],
   "show_up_next": ["true"]
@@ -41,7 +40,6 @@ set `view_settings.hide_finished` / `view_settings.show_up_next` directly.
   "description": "Updated description",
   "color": "#33CCFF",
   "icon": "📚",
-  "auto_assign_rules": null,
   "view_settings": { "hide_finished": true, "show_up_next": true },
   "created_at": "2026-10-24 13:57:01.81234 +0000 UTC"
 }
@@ -57,8 +55,8 @@ set `view_settings.hide_finished` / `view_settings.show_up_next` directly.
 | description | string | no | |
 | color | string | no | |
 | icon | string | no | |
-| auto_assign_rules | array | no | replaces the whole rule set (rule object shape: see Create Collection) |
 | view_settings | object | no | merged into stored settings |
+| filter_tree | object | no | replaces the stored filter tree (omitting it keeps the stored one) |
 | hide_finished | array | no | single-element string array `["true"]`/`["false"]`; merged into view_settings |
 | show_up_next | array | no | same shape as `hide_finished` |
 

docs/developer/api/collections/update_rule.md

@@ -1,45 +0,0 @@
----
-method: PUT
-path: /api/collections/:id/rules/:ruleId
-auth: jwt
-area: collections
----
-<!-- source: internal/handlers/collections.go:922 CollectionHandler.UpdateRule (SetRuleEnabled) -->
-
-# Update Collection Rule
-
-Despite the route name, this endpoint **toggles a rule's enabled state only**.
-It does not update the rule's field/operator/value — rules are replaced wholesale
-via [Create Collection](create_collection.md) (`auto_assign_rules`) or added via
-the rules endpoint.
-
-## Example request
-
-```json example-request
-{
-  "enabled": false
-}
-```
-
-## Example response
-
-```json example-response
-{
-  "collection_id": "550e8400-e29b-41d4-a716-446655440000",
-  "is_smart": true
-}
-```
-
-## Request fields
-
-| Field | Type | Required | Notes |
-| ----- | ---- | -------- | ----- |
-| enabled | boolean | yes | toggles the rule on/off |
-
-## Errors
-
-| Status | Body | When |
-| ------ | ---- | ---- |
-| 400 | `{"error": "invalid collection id"}` / `{"error": "rule id required"}` / `{"error": "invalid request"}` | malformed |
-| 404 | `{"error": "rule not found"}` | no such rule |
-| 500 | `{"error": "..."}` | unexpected server error |

docs/developer/api/custom-section-builder.md

@@ -68,6 +68,15 @@ Creates a new custom collection with filter rules and/or manual book selection.
 
 **Request Body:**
 
+**Save contract (2026-10-31 tree migration):** the rules array travels
+as a JSON-encoded string and the server converts it to a filter tree at
+write time — `match_type` seeds the tree's root mode (`any` default),
+`manual_book_ids` attach to the created collection, and
+`show_on_dashboard` persists. `library_id` is selection context only
+(sections scope to the dashboard's active library at render). Invalid
+rules are a 400 at write naming the problem; the section renders stored
+picks + the tree's live matches, deduped.
+
 ```json
 {
   "name": "My Custom Section",

docs/developer/api/libraries/add_library_folder.md

@@ -41,7 +41,8 @@ Add a folder to an existing library (Admin only).
   "id": "uuid",
   "library_id": "uuid",
   "folder_path": "/path/to/comics",
-  "created_at": "2026-01-31T10:00:00Z"
+  "created_at": "2026-01-31T10:00:00Z",
+  "purpose": "scan"
 }
 ```
 

docs/developer/api/libraries/create_library.md

@@ -42,7 +42,8 @@ Create a new library (Admin only).
   "created_at": "2026-01-31T10:00:00Z",
   "created_by_admin_id": null,
   "library_type_id": null,
-  "updated_at": null
+  "updated_at": null,
+  "allow_member_feeds": false
 }
 ```
 

docs/developer/api/libraries/get_library.md

@@ -43,7 +43,8 @@ Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
   "created_at": null,
   "created_by_admin_id": null,
   "library_type_id": null,
-  "updated_at": null
+  "updated_at": null,
+  "allow_member_feeds": false
 }
 ```
 

docs/developer/api/libraries/get_library_folders.md

@@ -18,7 +18,8 @@ Lists the filesystem folders configured for a library.
     "id": "aa0e8400-e29b-41d4-a716-446655440000",
     "library_id": "990e8400-e29b-41d4-a716-446655440000",
     "folder_path": "/books/manga",
-    "created_at": "2026-01-01T00:00:00Z"
+    "created_at": "2026-01-01T00:00:00Z",
+    "purpose": "scan"
   }
 ]
 ```

docs/developer/api/libraries/get_visible_libraries.md

@@ -42,7 +42,8 @@ A top-level JSON **array** of library rows:
     "updated_at": "2026-01-31T10:00:00Z",
     "type_name": "ebooks",
     "type_description": "Ebook libraries",
-    "is_visible": true
+    "is_visible": true,
+    "allow_member_feeds": false
   }
 ]
 ```

docs/developer/api/libraries/update_library.md

@@ -46,7 +46,8 @@ Update a library's information.
   "created_at": "2026-02-08T10:00:00Z",
   "updated_at": "2026-02-08T11:00:00Z",
   "created_by_admin_id": null,
-  "description": null
+  "description": null,
+  "allow_member_feeds": false
 }
 ```
 

docs/developer/api/media-items/create_media_item.md

@@ -164,7 +164,23 @@ Tags and contributors are automatically normalized:
   "summary": null,
   "total_characters": null,
   "volume": null,
-  "web_url": null
+  "web_url": null,
+  "source": null,
+  "source_feed_id": null,
+  "feed_position": null,
+  "episode_number": null,
+  "season_number": null,
+  "episode_guid": null,
+  "enclosure_url": null,
+  "chapters_url": null,
+  "transcript_url": null,
+  "hosts": null,
+  "guests": null,
+  "declared_duration_seconds": null,
+  "download_state": null,
+  "download_attempts": null,
+  "download_queue_pos": null,
+  "download_error": null
 }
 ```
 

docs/developer/api/media-items/search_media_items.md

@@ -231,7 +231,23 @@ Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
     "total_characters": null,
     "updated_at": null,
     "volume": null,
-    "web_url": null
+    "web_url": null,
+    "source": null,
+    "source_feed_id": null,
+    "feed_position": null,
+    "episode_number": null,
+    "season_number": null,
+    "episode_guid": null,
+    "enclosure_url": null,
+    "chapters_url": null,
+    "transcript_url": null,
+    "hosts": null,
+    "guests": null,
+    "declared_duration_seconds": null,
+    "download_state": null,
+    "download_attempts": null,
+    "download_queue_pos": null,
+    "download_error": null
   }
 ]
 ```

docs/developer/api/media-items/update_media_item.md

@@ -128,7 +128,23 @@ Update media item metadata (Admin only).
   "tags_search": null,
   "total_characters": null,
   "volume": null,
-  "web_url": null
+  "web_url": null,
+  "source": null,
+  "source_feed_id": null,
+  "feed_position": null,
+  "episode_number": null,
+  "season_number": null,
+  "episode_guid": null,
+  "enclosure_url": null,
+  "chapters_url": null,
+  "transcript_url": null,
+  "hosts": null,
+  "guests": null,
+  "declared_duration_seconds": null,
+  "download_state": null,
+  "download_attempts": null,
+  "download_queue_pos": null,
+  "download_error": null
 }
 ```
 

docs/developer/api/users/get_profile.md

@@ -36,6 +36,8 @@ Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
   "first_name": "John",
   "last_name": "Doe",
   "role": "user",
+  "default_audio_speed": 1.5,
+  "audio_resume_rewind_seconds": 5,
   "keep_screen_awake": true
 }
 ```

docs/developer/openapi.yaml

@@ -229,7 +229,6 @@ paths:
                 "color": "#00FF00",
                 "icon": "📖",
                 "collection_type": "static",
-                "auto_assign_rules": [],
                 "view_settings": { "kobo": { "view_mode": "grid" } }
               }
       responses:
@@ -277,33 +276,6 @@ paths:
       responses:
         '200':
           description: Success
-  "/api/collections/test-rules":
-    post:
-      tags: [collections]
-      summary: "Test Rule"
-      security:
-        - bearerAuth: []
-      requestBody:
-        content:
-          application/json:
-            example: |-
-              {
-                "rules": [
-                  {
-                    "field": "genre",
-                    "operator": "equals",
-                    "value": "Science Fiction"
-                  },
-                  {
-                    "field": "author",
-                    "operator": "contains",
-                    "value": "Asimov"
-                  }
-                ]
-              }
-      responses:
-        '200':
-          description: OK
   "/api/collections/{id}":
     delete:
       tags: [collections]
@@ -335,7 +307,6 @@ paths:
                 "description": "Updated description",
                 "color": "#33CCFF",
                 "icon": "📚",
-                "auto_assign_rules": [],
                 "view_settings": { "hide_finished": true },
                 "hide_finished": ["true"],
                 "show_up_next": ["true"]
@@ -409,38 +380,10 @@ paths:
       responses:
         '200':
           description: Success
-  "/api/collections/{id}/rules":
-    post:
-      tags: [collections]
-      summary: "Add Auto-Assign Rule"
-      security:
-        - bearerAuth: []
-      requestBody:
-        content:
-          application/json:
-            example: |-
-              {
-                "field": "genre",
-                "operator": "equals",
-                "value": "Science Fiction",
-                "priority": 1,
-                "enabled": true
-              }
-      responses:
-        '201':
-          description: Created
-  "/api/collections/{id}/rules/{ruleId}":
-    delete:
-      tags: [collections]
-      summary: "Remove Auto-Assign Rule"
-      security:
-        - bearerAuth: []
-      responses:
-        '204':
-          description: No Content
+  "/api/collections/{id}/view-settings":
     put:
       tags: [collections]
-      summary: "Update Collection Rule"
+      summary: "Set Collection Chain Order"
       security:
         - bearerAuth: []
       requestBody:
@@ -448,11 +391,11 @@ paths:
           application/json:
             example: |-
               {
-                "enabled": false
+                "chain_order": "newest"
               }
       responses:
         '200':
-          description: Success
+          description: OK
   "/api/conflicts":
     get:
       tags: [conflicts]

docs/developer/ui-controls.md

@@ -0,0 +1,230 @@
+<!-- Gate-checked by TestUIControlLabels (internal/docs/ui_labels_test.go):
+     every `controls` entry must exist as a literal in templates/*.templ
+     (or web/src for source: ts). Renames fail make test. Entry text is the
+     canonical spelling cited across the docs. -->
+
+# UI controls glossary
+
+The canonical spellings for controls cited across the UI documentation. Docs
+quote the label exactly as this page lists it — one entry per control; two
+spellings of one control is a defect. The `controls` block is machine-read:
+when a doc first names a control, add its entry in the same commit; when a
+rename lands, update the entry in the same commit and the gate goes green
+again.
+
+Entry fields:
+
+- `label` — the exact rendered text users see
+- `where` — semantic path (page → section/card), never spatial; see the
+  [writing standard](writing-ui-docs.md)
+- `does` — what interacting with it produces (the outcome)
+- `source` — optional; default `templ` (`templates/*.templ`); `ts` searches `web/src`
+- `also` — optional, pipe-separated extra literal fragments to search when
+  the visible label is Alpine-composed rather than static (OR-checked with `label`)
+- `note` — optional clarifier
+
+Form-field labels inside a single modal (Name, Description…) are cited
+inline in docs and not tracked here; this list carries the controls people
+navigate by.
+
+## Dashboard, profile & podcasts
+
+```controls
+label: Customize Dashboard
+where: Library bar on the dashboard (button); opens the Customize Dashboard panel
+does: Opens per-library shelf arrangement — drag order, show/hide switches, items per section.
+
+label: Save Changes
+where: Customize Dashboard panel → submit
+does: Saves that library's shelf arrangement.
+
+label: Refresh
+where: Library bar on the dashboard (button)
+does: Re-reads libraries without a full page reload.
+note: icon button with a tooltip title
+
+label: Create Custom Section
+where: the custom-section builder page (/custom-section) → page title
+does: Page where a dashboard shelf is defined by filter rules or hand-picked books.
+
+label: Update Password
+where: profile page → Change Password → submit
+does: Saves the new password after live requirement checks.
+
+label: Remove My Account
+where: profile page → Danger Zone
+does: Deletes the account and all personal data after confirmation; blocked for the last admin.
+
+label: Add Feed
+where: Podcasts page
+does: Opens the Add Podcast Feed panel.
+
+label: Add & Subscribe
+where: Add Podcast Feed panel → submit
+does: Subscribes the feed and starts watching it for new episodes.
+also: Add &amp; Subscribe
+note: templ source stores the ampersand entity; the rendered label reads "Add & Subscribe"
+
+label: Download all episodes now
+where: Add Podcast Feed panel
+does: Grabs the feed's back catalog immediately on subscribe.
+
+label: Player settings
+where: audio player → settings control
+does: Opens the per-player preferences — Autoplay on open, Default playback speed, Resume rewind.
+also: title="Settings"
+
+label: Shortcuts & interactions
+where: audio player → the ? control
+does: Lists every keyboard shortcut the player supports.
+also: Shortcuts &amp; interactions
+note: templ source stores the ampersand entity
+
+label: Chapters
+where: audio player → chapter-list control
+does: Opens the chapter list and shows the current chapter position.
+note: title attribute on the control
+
+label: Bookmarks
+where: audio player → bookmarks control
+does: Opens your markers for this title; tap one to jump back.
+note: title attribute on the control
+```
+
+## Collections
+
+```controls
+label: New Collection
+where: Collections page
+does: Opens the create-collection modal.
+note: the empty page offers the same action as "Create Your First Collection"
+
+label: Create Your First Collection
+where: Collections page, when no collections exist
+does: Opens the create-collection modal.
+
+label: Create Collection
+where: create-collection modal → submit
+does: Saves the new collection and returns to the Collections page.
+
+label: Update Collection
+where: edit-collection modal → submit
+does: Saves your changes to the collection.
+
+label: Static
+where: create-collection modal → Type
+does: Chooses a hand-picked collection — you add and remove items yourself.
+
+label: ⚡ Smart
+where: create-collection modal → Type; also shown as a badge on smart collections page and detail
+does: Chooses a rules-matched collection — its membership stays current by itself.
+
+label: Rules scope
+where: create-collection modal, when Smart is chosen
+does: Asks what the rules ask about — the two buttons below it.
+also: 📚 Books|🎧 Podcast episodes
+note: "Books" and "Podcast episodes" as the two scope buttons
+
+label: Restore System
+where: Collections page
+does: Opens a pick-a-shelf modal to bring back a system collection you deleted.
+
+label: Restore
+where: Restore System Collection modal → submit
+does: Brings the selected system collection back.
+
+label: Edit Rules
+where: collection detail page
+does: Opens the smart-collection rules editor for this collection.
+
+label: Filter tree
+where: smart-collection rules editor
+does: The area where the group and rules are built.
+note: read/write rules — the how is the filter guide
+
+label: Apply to Collection
+where: smart-collection rules editor → save
+does: Saves the filter tree and makes the collection match those rules from now on.
+
+label: Add Items
+where: collection detail page
+does: Opens the item picker window.
+
+label: Add Selected
+where: item picker → footer
+does: Adds everything checked in the picker to the collection.
+
+label: Remove Selected
+where: collection detail page
+does: Opens a confirm dialog to remove the checked items from the collection.
+
+label: Search within collection...
+where: collection detail page → search box
+does: Filters the displayed items — nothing is removed.
+
+label: Play as Sequence
+where: collection detail page (when it has a downloaded episode)
+does: Plays the collection's episodes one after another in the listening order you pick.
+
+label: Hide finished books (reading-queue mode)
+where: edit-collection modal
+does: Finished books disappear from the collection's shelf.
+
+label: Show Up Next strip
+where: edit-collection modal
+does: Adds this collection's Up Next strip to the podcast page.
+```
+
+## Everywhere else
+
+```controls
+label: Filters
+where: All Books / Podcasts page → toolbar
+does: Opens the filter drawer for building and applying rules.
+
+label: Register Device
+where: Devices page
+does: Submits a device registration request for the pending-approval flow.
+
+label: Download All
+where: Podcast page → episodes area
+does: Queues every episode of the feed for download.
+
+label: Download order
+where: Add Podcast Feed panel; podcast feed settings
+does: Sets the ordering used when feed episodes are downloaded.
+
+label: Match ALL / Group ANY header
+where: filter drawer → group header (also smart collections → Rules and dashboard sections)
+does: Sets how the group combines its rules; clicking the header flips ALL/ANY.
+also: ? 'Match' : 'Group'|? 'ANY' : 'ALL'
+note: label is Alpine-composed — 'Match' for the whole builder, 'Group' for nested; docs write it as MATCH ALL / MATCH ANY
+
+label: Reset to Scanned
+where: book detail → edit modal → scan information area
+does: Restores scanner-extracted metadata over manual edits.
+
+label: Auto-Scan
+where: Settings page → Scanning section
+does: Enables automatic periodic library scanning on the interval below it.
+
+label: Scan Interval (seconds)
+where: Settings page → Scanning section
+does: Sets the seconds between automatic scans.
+
+label: Resume rewind
+where: audio player → player settings; profile settings
+does: Rewinds playback a configured few seconds when you resume.
+also: Resume Rewind
+note: profile page spells it capitalized
+
+label: Reading Direction
+where: book detail → edit modal
+does: Chooses the direction pages advance (publisher convention — e.g. manga).
+
+label: Scan Info
+where: book detail page → info block
+does: Displays scanner-supplied notes attached to the item.
+also: Scan Information
+note: the editable form label in the modal reads "Scan Information"
+```

docs/developer/writing-ui-docs.md

@@ -0,0 +1,117 @@
+# Writing UI documentation without screenshots
+
+Bookhoard's UI documentation uses no screenshots. This page is the standard
+for writing them. The flagship example of the style is the
+[filter system documentation](../user/filters/index.md): one system taught
+once, the places it appears listed as a *pattern*, samples for every field in
+a [generated reference](../user/filters/fields.md) that cannot drift from the
+UI.
+
+## Why no screenshots
+
+Screenshots fail in every way the rest of this repo's rot is already gated
+against:
+
+- **They rot silently.** No gate can diff pixels against the running UI. A
+  renamed button makes the screenshot wrong and nothing fails.
+- **They cannot be verified.** Shown text can: this app's UI is
+  server-rendered from `templates/*.templ`, so every stable label and heading
+  is a literal in the source — checkable, like routes and API examples are.
+- **They die with a redesign.** Text keyed to *function* survives a
+  re-layout. Text keyed to a layout dies with its redesign.
+- **They exclude** (screen readers, text search) and bloat diffs.
+
+The one thing screenshots do better — "which button is it?" — text does via
+**exact quoted labels** plus a semantic path, and the label gate then holds
+that text against the source.
+
+## The layering — what is load-bearing
+
+Write every UI page in this order. The top layers are why users don't get
+lost when the UI changes:
+
+| # | Layer | Content | Lifespan |
+| --- | --- | --- | --- |
+| 1 | **The pattern** | What the thing *is*, what is invariant, every place the same pattern appears | Redesign-proof |
+| 2 | **Function inventory** | What the user *can do*, phrased without control names | Redesign-proof |
+| 3 | **How-to with examples** | Numbered flows: current label → the outcome it produces | Survives most changes |
+| 4 | **Current labels** | Exactly quoted, bold | Gate-checked today |
+| 5 | **Generated references** | Enumerables regenerated from source with a currency test | Cannot drift |
+
+Labels are **tips, not the map**. Layer 3 may quote a label; layer 1 must
+make the page followable even if that label is renamed next week.
+
+## The page template
+
+1. **The pattern first.** The concept, its invariants, and everywhere it
+   appears — "one system, three places". Never page cartography.
+2. **Function inventory.** Capabilities without control names: "you can pin
+   any narrowing to a named filter you can reopen later".
+3. **How-to with examples.** Each step: the label of what you interact with,
+   then the outcome ("the count at the bottom shows how many books will
+   match"). An example beats an adjective.
+4. **Findability note.** One line telling the reader how to re-locate the
+   feature *by function again* after any UI change — deliberately
+   label-independent ("it's the drawer opened from any books or podcasts
+   list — the only place whose header can read Match ALL").
+5. **Current labels.** Quoted exactly as rendered, one canonical spelling
+   per control ([arbitrated by the glossary](ui-controls.md)).
+
+## Writing rules
+
+- **Semantic placement, never spatial.** No "top-right" or "at the bottom of
+  the screen" talk. "Devices page → the **Register Device** button" survives
+  any re-layout.
+- **One canonical label per control.** Two spellings of the same control is
+  a defect, not a synonym.
+- **Status updates get a what-it-means table**, not a color description.
+- **Screenshots are never load-bearing.** Default is none.
+
+## Tone by audience
+
+- **User Guide (`docs/user/`) — plain language, deliberately.** Short
+  sentences. Everyday words. No developer jargon; any term the reader
+  genuinely needs (say, *rule*) is explained once, in place, then used
+  consistently. The reader is assumed to know books, while the app's own
+  words are the only technical vocabulary allowed.
+- **Developer and Administration sections — tone is a separate discussion,
+  not yet decided.** Write them plainly and hand-off-rich as well; do not
+  import opinions about their voice until that pass happens.
+
+## Generate what has a registry
+
+Anything enumerable gets generated from source with a currency test, not
+hand-typed. The precedent: every filter field is
+[generated](../user/filters/fields.md) by `TestFieldReferenceDocIsCurrent`
+from the same registry the menus render — the doc cannot disagree with the
+UI. Hand-typed lists drift fastest; when no registry exists yet, say so in
+the page and lean on the pattern layers.
+
+## The gates
+
+- `TestUIControlLabels` (`internal/docs/ui_labels_test.go`): every control in
+  the [glossary](ui-controls.md) must exist as a literal in
+  `templates/*.templ` (or `web/src` for TS-rendered surfaces, marked
+  `source: ts`). Renames fail `make test` in the same commit as the rename.
+- `TestDocsRelativeLinks`: every relative link in the docs tree resolves to
+  a real file.
+
+Naming a new control in prose? Add its glossary entry in the same commit.
+Form labels inside one modal (Name, Description…) are cited inline and not
+glossary-tracked; the glossary carries the controls people navigate by —
+buttons, tabs, badges, page titles.
+
+## The process rule
+
+**A UI change is not finished until the docs audit runs.** Moved card,
+renamed button, restructured page — all of it triggers: labels still
+resolve, links still resolve, affected pages re-read against the new
+surface. The pattern layers keep users oriented between audits; the audit
+keeps layers 3–5 honest.
+
+## What this does not replace
+
+The filter documentation (and the older filtering overview) is hands-off
+exemplar territory — read it as the model, never restyle it here. New UI
+surfaces (scanning, devices, settings, podcasts, the reader, collections)
+are written this way from the start.

docs/development/calibre-opf-implementation.md

@@ -623,6 +623,6 @@ This is a great example of how user feedback can improve implementation design!
 
 ## See Also
 
-- [User Guide: Calibre Integration](../../user/calibre-integration.md)
-- [Implementation Plan](../../CALIBRE_OPF_IMPLEMENTATION.md)
-- [Scanner Source Code](../../internal/services/media_scanner.go)
+- [User Guide: Calibre Integration](../user/calibre-integration.md)
+- The original implementation plan file was removed from the repo when this page absorbed its content.
+- The scanner implementation lives in `internal/services/` (not hyperlinked — the docs site serves only docs).

docs/index.md

@@ -13,57 +13,60 @@ Complete guide to Bookhoard documentation. Find what you need quickly.
 - **Device Setup**
   - [KOReader Setup Guide](user/devices/koreader-setup.md) - KOReader on Kindle/Kobo/PocketBook hardware
   - [Kobo Setup Guide](user/devices/kobo-setup.md) - Native Kobo sync (coming soon; use KOReader today)
+  - [Android App](user/devices/android-app.md)
 
 - **Sync Configuration**
   - [Universal Sync Guide](user/sync-guide.md) - Understanding sync, book matching, conflicts
 
-- **Frontend & Settings** (Coming Soon)
-  - Frontend Guide
-  - User Areas Guide
-  - Settings Guide
-  - Admin Guide
+- **Filters**
+  - [Filters — the complete guide](user/filters/index.md) - rules, groups (ALL/ANY), saved filters, smart collections
+  - [Filter cookbook](user/filters/cookbook.md) - ready-made recipes, exact clicks
+  - [Every filter field](user/filters/fields.md) - the generated, always-current reference
+
+- **Guides**
+  - [Reader Guide](user/reader-guide.md) - reading, highlights, notes
+  - [Library Browsing](user/library-browsing.md) - browsing and searching your library
+  - [Collections](user/collections.md) - manual and ⚡ smart shelves, books and episodes
+  - [Podcasts](user/podcasts.md) - feeds, downloads, listening
+  - [Dashboard](user/dashboard.md)
+  - [Themes](user/themes.md)
+  - [Calibre Integration](user/calibre-integration.md)
+  - [Profile Guide](user/profile-guide.md)
+  - [Admin Guide](user/admin-guide.md)
 
 ### 👨‍💻 For Developers
 
 **[Developer Documentation Portal](developer/development.md)** - Technical documentation & API reference
 
-- **API Documentation**
-  - [Complete API Reference](developer/api-reference.md) - Monolithic REST API reference (1,300+ lines)
-  - [Split Endpoint Docs](developer/api/api-reference.md) - Individual endpoint docs
-  - [Collections API](developer/api/collections/list_collections.md) - Collections management API
-  - [Admin API](developer/api/admin/) - User management (admin operations)
-  - [Media Items API](developer/api/media-items/) - Media item operations including bulk operations and downloads
-  - [Devices API](developer/api/devices/) - Device sync and shelf management
-  - [Conflicts API](developer/api/conflicts/) - Sync conflict resolution endpoints
-  - [Queue API](developer/api/queue/) - Sync queue management endpoints
-  - [Scanner API](developer/api/scanner/) - Library scanning and automated watch mode (admin)
-  - [KOReader API](developer/api/koreader/) - KOReader sync protocol endpoints
-  - [Kobo API](developer/api/kobo/) - Kobo sync protocol endpoints (feature coming soon)
-  - [WebSocket API](developer/api/websocket/) - Real-time sync events
+- **API Documentation** — every endpoint is documented individually; the links below are entry points
+  - [API Reference overview](developer/api/api-reference.md) - index of all endpoint docs
+  - [Collections API](developer/api/collections/list_collections.md) - collections management API
+  - [Media Items API](developer/api/media-items/list_media_items.md) - media item operations including bulk operations and downloads
+  - [Devices API](developer/api/devices/list_devices.md) - Device sync and shelf management
+  - [Conflicts API](developer/api/conflicts/list_conflicts.md) - Sync conflict resolution endpoints
+  - [Queue API](developer/api/queue/list_all_queue_items.md) - Sync queue management endpoints
+  - [Scanner API](developer/api/scanner/overview.md) - Library scanning and automated watch mode (admin)
+  - [KOReader API](developer/api/koreader/get_library.md) - KOReader sync protocol endpoints
+  - [Kobo API](developer/api/kobo/sync_from_server.md) - Kobo sync protocol endpoints
+  - [Admin API](developer/api/admin/list_users.md) - User management (admin operations); content-duplicate cleanup lives in [hash conflicts](developer/api/admin/hash_conflicts_api.md)
 
 - **Protocol Specifications**
   - [KOReader Sync Protocol](developer/api/sync/koreader-protocol.md) - KOReader sync
-  - [Kobo Sync Protocol](developer/api/sync/kobo-protocol.md) - Kobo device sync (coming soon)
-  - [WebSocket API](developer/websocket-api.md) - Real-time events
+  - [Kobo Sync Protocol](developer/api/sync/kobo-protocol.md) - Kobo device sync
+
+- **Writing UI docs?** Read [Writing UI documentation without screenshots](developer/writing-ui-docs.md) first.
 
 ### 🔧 For Operations
 
 **[Operations Documentation Portal](operations/operations.md)** - Deployment & maintenance
 
-- **Deployment**
 - [Troubleshooting Guide](operations/troubleshooting.md) - Common deployment issues and solutions
 
-- **Maintenance** (Coming Soon)
-  - Deployment Guide
-  - Maintenance Guide
-  - Monitoring Guide
-
 ### 🤝 For Contributors
 
 **[Contributing Portal](contributing/contributing.md)** - Development workflow
 
-- [Development Guide](contributing/development.md) - Architecture, setup, testing
-- [../../AGENTS.md](../../AGENTS.md) - Development rules and standards
+- [Development Guide](contributing/development.md) - Architecture, setup, testing, and the project rules
 
 ---
 
@@ -71,11 +74,11 @@ Complete guide to Bookhoard documentation. Find what you need quickly.
 
 | Want to...           | Go to                                                                  |
 | -------------------- | ---------------------------------------------------------------------- |
-| **Get started**      | [README.md](../README.md) - Project overview and quick start           |
+| **Get started**      | [Development Guide](contributing/development.md) - Architecture and quick start |
 | **Set up a device**  | [User Portal → Device Setup](user/user-guide.md)                       |
-| **Use the API**      | [Developer Portal → API Docs](developer/development.md)                |
-| **Deploy Bookhoard** | [Operations Portal → Troubleshooting](operations/troubleshooting.md)   |
-| **Contribute code**  | [Contributing Portal → Development Guide](contributing/development.md) |
+| **Use the API**      | [API Reference overview](developer/api/api-reference.md)               |
+| **Deploy Bookhoard** | [Operations → Troubleshooting](operations/troubleshooting.md)          |
+| **Contribute code**  | [Development Guide](contributing/development.md) |
 | **Understand sync**  | [User Portal → Sync Guide](user/sync-guide.md)                         |
 | **Read in the browser** | [User Portal → Web Reader Guide](user/reader-guide.md)              |
 
@@ -87,65 +90,25 @@ Complete guide to Bookhoard documentation. Find what you need quickly.
 
 | Question                    | Answer                                                 |
 | --------------------------- | ------------------------------------------------------ |
-| ...install Bookhoard?       | [README.md](../README.md) - Quick Start                |
 | ...set up KOReader?         | [KOReader Setup Guide](user/devices/koreader-setup.md) |
 | ...use a Kobo?              | [Kobo Setup Guide](user/devices/kobo-setup.md) - native sync coming soon; KOReader works today |
 | ...understand sync?         | [Sync Guide](user/sync-guide.md)                       |
 | ...read in the browser?     | [Web Reader Guide](user/reader-guide.md) - reading, highlights, notes |
 | ...resolve conflicts?       | [Sync Guide](user/sync-guide.md) - Managing Conflicts  |
 | ...troubleshoot deployment? | [Troubleshooting Guide](operations/troubleshooting.md) |
-| ...use the API?             | [API Reference](developer/api-reference.md)            |
+| ...use the API?             | [API Reference overview](developer/api/api-reference.md) |
+| ...write UI docs?           | [Writing UI documentation](developer/writing-ui-docs.md) |
 | ...contribute code?         | [Development Guide](contributing/development.md)       |
 
-### "Where is..."
-
-| Information            | Location                                                    |
-| ---------------------- | ----------------------------------------------------------- |
-| ...features list?      | [README.md](../README.md)                                   |
-| ...database schema?    | [database/schema/schema.sql](../database/schema/schema.sql) |
-| ...API endpoints?      | [API Reference](developer/api-reference.md)                 |
-| ...secrets config?     | [.env.example](../.env.example)                             |
-| ...operational config? | [docker-compose.yml](../docker-compose.yml)                 |
-| ...deployment issues?  | [Troubleshooting Guide](operations/troubleshooting.md)      |
-
----
-
-## 🎯 Common Workflows
-
-### Set up a new device
-
-1. Choose your device: [KOReader](user/devices/koreader-setup.md) (works on Kindle, Kobo, and PocketBook hardware)
-2. Understand sync: [Sync Guide](user/sync-guide.md)
-3. Troubleshoot: Device-specific guides
-
-### Integrate with Bookhoard API
-
-1. Start with [API Reference](developer/api-reference.md)
-2. Explore [Collections API](developer/api/collections/list_collections.md)
-3. Review [WebSocket API](developer/websocket-api.md)
-4. Test with [bruno/](../bruno/) collections
-
-### Deploy to production
-
-1. Follow [README.md](../README.md) quick start
-2. Configure environment: [.env.example](../.env.example)
-3. Review [Troubleshooting Guide](operations/troubleshooting.md)
-4. Check [Development Guide](contributing/development.md) for performance tuning
-
 ---
 
 ## 📝 Contributing to Documentation
 
 When adding new features:
 
-1. **User-facing features** → Update relevant User docs
-2. **API endpoints** → Update [API Reference](developer/api-reference.md) & split docs
-3. **Backend changes** → Update [Development Guide](contributing/development.md)
-4. **Deployment changes** → Update [Operations Portal](operations/operations.md)
-
-Keep [../../AGENTS.md](../../AGENTS.md) in mind for documentation standards.
-
----
-
-**Last Updated**: August 2026
-**Bookhoard Version**: 1.0
+1. **User-facing features** → Update the relevant User docs
+2. **API endpoints** → Update the endpoint docs under `developer/api/` (start from the [API Reference overview](developer/api/api-reference.md))
+3. **Backend changes** → Update the [Development Guide](contributing/development.md)
+4. **Deployment changes** → Update the [Operations Portal](operations/operations.md)
+5. **New UI controls in docs** → Add them to the [UI controls glossary](developer/ui-controls.md)
+6. **UI appearances in docs** → Follow [Writing UI documentation without screenshots](developer/writing-ui-docs.md)

docs/operations/operations.md

@@ -15,19 +15,19 @@ Welcome to the Bookhoard operations documentation. This section contains guides
 
 ### Additional Deployment Guides
 
-**[Deployment Guide](deployment.md)** - Comprehensive deployment guide
+**Deployment Guide** - Comprehensive deployment guide
 
 - _Coming Soon_
 
 ## 🛠️ Maintenance
 
-**[Maintenance Guide](maintenance.md)** - Ongoing operations and maintenance
+**Maintenance Guide** - Ongoing operations and maintenance
 
 - _Coming Soon_
 
 ## 📊 Monitoring
 
-**[Monitoring Guide](monitoring.md)** - Monitoring and alerting
+**Monitoring Guide** - Monitoring and alerting
 
 - _Coming Soon_
 

docs/user/admin-guide.md

@@ -13,4 +13,4 @@ This guide will cover:
 
 ---
 
-_In the meantime, check out our [Operations Portal](../operations/)_
+_In the meantime, check out our [Operations Portal](../operations/operations.md)_

docs/user/calibre-integration.md

@@ -139,7 +139,7 @@ As long as a `metadata.opf` file exists in the folder, Bookhoard will import the
 
 **Steps**:
 1. Add the Calibre library folder in Bookhoard (Administration → Libraries → expand the library → **Folders**)
-2. Trigger a scan via the **Scanner API**, or let watch mode pick up the changed files (the File Watcher status is shown on the admin dashboard)
+2. Trigger a scan from the admin interface's scan controls, or let watch mode pick up the changed files automatically
 3. Bookhoard imports all 500 books with:
    - Correct titles and authors
    - Series information (e.g., "Harry Potter #2")
@@ -168,7 +168,7 @@ As long as a `metadata.opf` file exists in the folder, Bookhoard will import the
 **Steps**:
 1. Edit metadata in Calibre (it updates `metadata.opf`)
 2. In Bookhoard, trigger a rescan:
-   - Via the **Scanner API** (`POST /api/scanner/scan`), or
+   - Via the admin interface's scan controls, or
    - Let watch mode detect the changed files automatically (see File Watcher on the admin dashboard)
 3. Bookhoard detects updated `metadata.opf` and refreshes metadata
 
@@ -183,7 +183,7 @@ As long as a `metadata.opf` file exists in the folder, Bookhoard will import the
 **Solutions**:
 1. **Check file structure**: Ensure `metadata.opf` is in the same folder as the book file
 2. **Verify library type**: Ensure library type matches content (ebook vs. audiobook)
-3. **Force rescan**: Trigger a scan via the Scanner API to re-import all metadata (watch mode also picks up changed files automatically)
+3. **Force rescan**: Trigger a rescan from the admin interface to re-import all metadata (watch mode also picks up changed files automatically)
 4. **Check logs**: Review Bookhoard logs for parsing errors
 
 ### Incorrect Metadata
@@ -332,11 +332,10 @@ file is never touched if anything fails (temp file + atomic rename).
 - [Calibre Website](https://calibre-ebook.com/)
 - [Calibre User Manual](https://manual.calibre-ebook.com/)
 - [Calibre Forum](https://www.mobileread.com/forums/forumdisplay.php?f=166)
-- [Bookhoard GitHub](https://github.com/yourusername/bookhoard)
 
 ## Need Help?
 
 - **Documentation**: See [User Guide](user-guide.md) for general Bookhoard usage
 - **Troubleshooting**: See [Operations Guide](../operations/operations.md) for common issues
 - **Developer Docs**: See [Developer Portal](../developer/development.md) for technical details
-- **Issues**: Report bugs or request features on [GitHub Issues](https://github.com/yourusername/bookhoard/issues)
+- **Issues**: Report bugs or request features on your repository's issue tracker

docs/user/collections.md

@@ -1,42 +1,118 @@
 # Collections
 
-Collections allow you to organize books across multiple libraries.
+A collection is a personal shelf you name yourself. You put your books and
+podcast episodes on it, and it appears as a section on your dashboard.
 
-## Viewing Collections
+That is the whole idea. Everything below is variations on it.
 
-### From Collections Page
+## The one pattern, four flavors
 
-Navigate to **Collections** (sidebar navigation) to see all your collections. Clicking on a collection shows ALL books in that collection across all libraries.
+Every collection behaves the same way on the outside: it has a name, an icon,
+a color, and a list of items. The flavors differ in how items *join*:
 
-### From Dashboard
+| Flavor | How items join | Right for |
+| --- | --- | --- |
+| **Static** | You pick each item by hand | Curated lists — "books for the trip", "new house ideas" |
+| **⚡ Smart** (books) | Rules match books live, forever | "everything by Asimov", "still not started", "over 400 pages" |
+| **⚡ Smart** (podcast episodes) | Rules match episodes live — and they can play back-to-back | "catch up on my feeds", "episodes to finish" |
+| **System** (built-in) | Bookhoard maintains them | Continue Reading, Recently Added, Recently Read, Not Started, Continue Series |
 
-When viewing a specific library's dashboard, collections only show books from that library. Clicking "View All" preserves this context and shows only books from that library in the collection.
+A collection holds **books and podcast episodes** — mix them if you like.
 
-### Library Filtering
+The **⚡ Smart** badge means the same thing everywhere it appears: *membership
+is matched by rules right now — always current, nothing to refresh*.
 
-- **No filter** (`/collections/favorites`): Shows all books across all libraries
-- **With filter** (`/collections/favorites?library_id=xxx`): Shows only books from the specified library
+## Creating a collection
 
-## Creating Collections
+1. Open the **Collections** page (sidebar navigation)
+2. Click **New Collection**
+3. Choose the **Type**:
+   - **Static** — pick items by hand
+   - **⚡ Smart** — match by rules, always live
+4. If you picked **⚡ Smart**, choose the **Rules scope**: **📚 Books** or
+   **🎧 Podcast episodes**
+5. Fill in the rest: **Name**, **Description**, an **Icon** you can search or
+   pick, and a **Color**
+6. Click **Create Collection**
 
-1. Go to **Collections** (sidebar navigation)
-2. Click **New Collection** (top-right) — or **Create Your First Collection** if the list is empty
-3. Fill in the details:
-   - **Name** - Collection name
-   - **Description** - Optional description
-   - **Icon** - Pick from the icon grid
-   - **Color** - Pick a color swatch
-4. Click **Create Collection**
+Starting from a completely empty account? The button **Create Your First
+Collection** does the same thing.
 
-## Managing Collections
+## Adding items by hand (Static collections)
 
-Each collection in the list has icon buttons on its card:
+1. Open the collection from the **Collections** page
+2. Click **Add Items**
+3. Pick the tab for what you want:
+   - **📚 Books** — searchable by the **Search books...** box, and the
+     **Author** and **Genre** boxes
+   - **🎧 Episodes** — the episodes of the feeds you subscribe to
+4. Click one or more items — a checkmark marks what you picked; the bottom
+   of the window counts them for you
+5. Click **Add Selected**
 
-- **Edit** - Opens the edit form to change name, description, icon, or color. Click **Update Collection** to save.
-- **Delete** - Removes the collection after a confirmation prompt.
+To take items out, check them on the collection page and click
+**Remove Selected** (it asks first).
 
-Deleted a system collection by mistake? The **Restore System** button on the Collections page brings back system collections.
+While checking what is in the collection, the **Search within collection...**
+box narrows the view — it never removes anything.
 
-### Dashboard Sections
+## Rules (how ⚡ Smart collections work)
 
-Collections appear as sections on your dashboard. Show, hide, and reorder them from the dashboard's **Customize Dashboard** settings (see [Dashboard](dashboard.md)).
+A smart collection keeps its own list of rules, the same rules that power the
+filter drawer. On the collection's page, click **Edit Rules** to open the
+rules editor: build your groups and rules in the **Filter tree**, then click
+**Apply to Collection**. From that point the collection matches those rules
+by itself — add a book that matches and it appears without you doing
+anything.
+
+Rules live in one guide, so this page does not repeat them. The full how-to
+walks through groups, ALL/ANY, and value picking in
+[Filters — the complete guide](filters/index.md), ready-made examples are in
+the [cookbook](filters/cookbook.md), and
+[every filter field](filters/fields.md) lists what you can ask about.
+
+*Finding it again later:* open any collection's page and look for the
+**Edit Rules** button; the **⚡ Smart** badge in the page title marks a
+collection that is already matching.
+
+## Playing an episode collection
+
+When a collection holds a downloaded episode, it grows a **Play as Sequence**
+button: the episodes play one after another. Next to it, the order picker
+decides the sequence — **Feed order**, **Feed order (reversed)**,
+**Oldest first (pub date)**, or **Newest first (pub date)**. Your choice is
+remembered on the collection.
+
+## Changing a collection
+
+The pencil button on a collection card, or the edit control on the
+collection page, opens the edit form:
+
+- Change the **Name**, **Description**, **Icon**, **Color**
+- **Hide finished books (reading-queue mode)** — finished books drop off
+  this shelf, which keeps a to-read list short
+- **Show Up Next strip** — show the collection's Up Next strip where it is
+  used
+
+Click **Update Collection** to save. Deleting a collection asks first, and
+deleting only removes the shelf — never the books or episodes inside it.
+
+## System collections
+
+The five built-in shelves — **Continue Reading**, **Recently Added**,
+**Recently Read**, **Not Started**, **Continue Series** — work like any
+collection on the outside, but Bookhoard decides their membership by what
+happens while you read. They appear on your dashboard automatically.
+
+Deleted one and want it back? Click **Restore System** on the **Collections**
+page, pick the shelf from the list, and click **Restore**.
+
+## Your dashboard shelves
+
+Collections appear as sections on your dashboard, and you choose which ones
+show and in what order from the dashboard's own settings. That page's
+details live in [Dashboard](dashboard.md).
+
+*Finding your way back:* **Collections** is the sidebar page whose top has
+the only **New Collection** button — from a dashboard shelf's **View All**,
+the collection detail page is the place with **Add Items**.

docs/user/dashboard.md

@@ -1,52 +1,62 @@
 # Dashboard
 
-The Bookhoard dashboard provides a Carousel-style horizontal carousel interface for browsing your book library.
+The dashboard is your home screen: horizontal shelves ("sections") of your
+books, one row after another. What each shelf contains depends on the library
+you are looking at — including the **All Libraries** view, which mixes
+everything you can see.
 
-## Sections
+## The three kinds of section
 
-### Smart Sections
+| Kind | What fills it |
+| --- | --- |
+| **System shelves** | Bookhoard maintains them from your reading: **Continue Reading**, **Recently Added**, **Recently Read**, **Not Started**, **Continue Series** |
+| **Your collections** | Every collection you create appears as its own shelf |
+| **Custom sections** | Shelves you define yourself — by filter rules or by hand-picking books |
 
-Smart sections are automatically generated based on your reading activity:
+System shelves and collections are covered by their own guides (see
+[Sync Guide](sync-guide.md) for what "continue reading" means across devices,
+and [Collections](collections.md) for the shelves you build). This page is
+about arranging the rows.
 
-- **Continue Reading**: Books you're currently reading (progress between 0-100%)
-- **In Progress**: Books you've started (progress > 0%)
-- **Recently Added**: Newest items added to this library
-- **Recently Read**: Books you've completed (100% progress)
-- **Not Started**: Books you haven't read yet
+### This Week
 
-### User Collections
+The dashboard also shows a small **This Week** summary — your reading time
+and activity for the week so far. Click it to expand the detail.
 
-Your collections appear as sections on the dashboard. To show or hide a collection's section:
+## Customizing your shelves
 
-1. Select the library in the **Library** bar
-2. Click the **Customize Dashboard** icon button
-3. Toggle the collection on or off
-4. Click "Save Changes"
+1. Pick the library in the **Library** bar (a specific library, or
+   **All Libraries**) — settings are saved per library
+2. Click the **Customize Dashboard** button in the Library bar
+3. In the **Customize Dashboard** panel: drag sections into the order you
+   want, switch sections on or off, and set how many items each section
+   shows (10–50)
+4. Click **Save Changes**
 
-### Customizing Your Dashboard
+The **Refresh** button next to it re-reads your libraries without a full
+page reload.
 
-1. In the **Library** bar below the top bar, select the library you want to customize (a specific library, not "All Libraries")
-2. Click the **Customize Dashboard** icon button at the right end of the Library bar (next to Refresh)
-3. **Drag sections** to reorder them
-4. **Toggle visibility** with the switches
-5. **Adjust items per section** (10-50 items)
-6. Click "Save Changes"
+## Custom sections
 
-Settings are saved per library.
+A custom section is a shelf whose contents you define — either with the same
+filter rules the **Filters** drawer uses, or by picking the books yourself.
+You build one on the **Create Custom Section** page (at `/custom-section` on
+your server); once saved it behaves like any other shelf and can be ordered
+and hidden with everything else.
 
-### Library Switching
+## Reading and listening from the dashboard
 
-Use the **Library** dropdown in the bar below the top bar to switch between libraries (including "All Libraries"). Each library has its own dashboard settings.
+Point at a shelf and chevron buttons appear to scroll it. Every item carries
+a direct action: **Read** opens the web reader, **Listen** opens the audio
+player. If the same book has conflicting progress from two devices, the item
+grows a resolve action that takes you to conflict resolution — see the
+[Sync Guide](sync-guide.md).
 
-### Keyboard Navigation
+## Keyboard and touch
 
-- **Tab**: Navigate between sections and books
-- **Arrow Keys**: Scroll carousels horizontally
-- **Enter**: Open selected book
+- **Tab** moves between shelves and books; **Enter** opens the focused book
+- **Arrow keys** scroll the focused shelf sideways
+- On touch: swipe a shelf to scroll it, tap a cover to open it
 
-Hovering a carousel shows chevron buttons on either side for scrolling.
-
-### Touch Gestures (Mobile)
-
-- **Swipe**: Drag carousel left/right to scroll
-- **Tap**: Open book details
+*Finding your way back:* the dashboard is the page with the **Library** bar —
+the only place with the **Customize Dashboard** button.

docs/user/devices/kobo-setup.md

@@ -1,40 +1,47 @@
 # Kobo Device Setup Guide
 
-> ## 🚧 Coming Soon
->
-> Native Kobo sync is not available yet. It is actively being developed and this guide will be filled in as the feature lands.
+There are two ways to use a Kobo with Bookhoard, and they can be chosen
+independently per device:
 
-## Using a Kobo With Bookhoard Today
+| Way | Status | What you get |
+| --- | --- | --- |
+| **KOReader on the Kobo** | Works today, fully | Reading position, bookmarks, highlights, notes, OPDS wireless book delivery |
+| **Stock Kobo firmware (native sync)** | Server support is complete; device-side enablement is the remaining piece | Reading position and stats, bookmarks/highlights/notes, shelf mappings (your collections as Kobo shelves), automatic EPUB → KEPUB conversion, and the Kobo's own sync experience |
 
-You don't have to wait: **KOReader runs on Kobo hardware** and syncs fully with Bookhoard today — reading position, bookmarks, highlights, and notes, plus OPDS wireless book delivery.
+## Using a Kobo today
 
-See the **[KOReader Setup Guide](koreader-setup.md)** for complete instructions.
+**KOReader runs on Kobo hardware** and syncs fully with Bookhoard right
+now — the [KOReader Setup Guide](koreader-setup.md) walks the whole path
+(plugin install, server approval, OPDS delivery, troubleshooting).
 
-## What's Planned for Native Kobo Sync
+## About native Kobo sync
 
-When released, native Kobo sync will let stock Kobo firmware talk directly to Bookhoard:
+The server side of the native protocol is implemented and documented: the
+Kobo sync and initialization endpoints, bookmark and markup (highlight and
+note) sync, shelf mappings that expose your collections as Kobo shelves,
+and the KEPUB sidecar configuration used for conversion. What remains is
+the device-side rollout, so stock-firmware sync is not yet something to
+rely on for daily use — this guide will gain a full setup walkthrough when
+that lands.
 
-- **Reading position sync** — percentages, pages, and reading statistics
-- **Bookmarks, highlights, and notes** — synced with the web and other devices
-- **OPDS wireless delivery** — browse and download books directly on the Kobo
-- **Automatic EPUB → KEPUB conversion** — for better Kobo rendering
-- **Shelf mappings** — Bookhoard collections appearing as Kobo shelves
-
-The server-side protocol endpoints are already implemented and under test; the feature will be announced when it's ready for real devices.
+Nothing about native sync takes anything away from KOReader: the two can
+coexist, and a KOReader setup keeps working either way.
 
 ## FAQ
 
 **Q: Should I buy a Kobo to use with Bookhoard today?**
-A: Kobo devices work great with Bookhoard via KOReader. Native (stock firmware) sync is coming soon.
+A: Yes, via KOReader — it is the supported path today and covers sync plus
+wireless book delivery.
 
-**Q: What happens to my KOReader setup when native sync arrives?**
-A: Nothing — KOReader will keep working. Native sync simply adds another option for people who prefer stock Kobo firmware.
+**Q: Will I have to redo anything when native sync lands?**
+A: No — KOReader keeps working; native sync just adds the stock-firmware
+option.
 
 ## Additional Resources
 
 - [KOReader Setup Guide](koreader-setup.md) — works on Kobo today
 - [Bookhoard Universal Sync Guide](../sync-guide.md)
-- [Bookhoard API Reference](../../developer/api-reference.md)
+- Kobo sync protocol (for developers): [Kobo API docs](../../developer/api/kobo/sync_from_server.md)
 
 ---
 

docs/user/devices/koreader-setup.md

@@ -1,16 +1,24 @@
+<!-- Ground truth: bookhoard.koplugin main.lua (menu tree, defaults, approval
+     flow) + the server-side koreader endpoints. Re-verify against the plugin
+     source when the plugin changes. -->
+
 # KOReader Device Setup Guide
 
-This guide will help you set up KOReader on your e-reader device to sync with Bookhoard.
+This guide will help you set up KOReader on your e-reader device to sync with
+Bookhoard — reading position, bookmarks, highlights, notes, and even your
+ratings, reviews, and reading time.
 
 ## What is KOReader?
 
-KOReader is an open-source e-reader application that supports a wide range of e-reader devices including:
+KOReader is an open-source e-reader application that supports a wide range of
+e-reader devices including:
 
 - Kindle devices (Paperwhite, Oasis, Voyage, etc.)
 - Kobo devices (Clara, Aura, Nia, etc.)
 - PocketBook devices
 
-It also runs on Android tablets and phones, although Bookhoard's dedicated mobile apps (coming later) will be the better option there.
+It also runs on Android tablets and phones — though on Android the dedicated
+[Bookhoard app](android-app.md) is the better option.
 
 ## Prerequisites
 
@@ -67,17 +75,27 @@ Before you begin, make sure you have:
 
 ## Connecting KOReader to Bookhoard
 
-Setup is done **on the server**: you approve the device from the Bookhoard web interface — no usernames, passwords, or tokens to type on the device.
+Setup is done **on the server**: you approve the device from the Bookhoard
+web interface — no usernames, passwords, or tokens to type on the device.
 
 ### Step 1: Install the Bookhoard Plugin
 
-1. Clone the [Bookhoard KOReader plugin](https://git.linuxhg.com/Bookhoard/bookhoard.koplugin)
-2. Copy it to your KOReader `plugins/` directory
-3. Restart KOReader
+Installation is a git clone straight into your KOReader `plugins/` folder —
+no download-and-copy step:
+
+```bash
+cd koreader/plugins        # .adds/koreader/plugins on Kobo
+git clone https://git.linuxhg.com/Bookhoard/bookhoard.koplugin
+```
+
+Then restart KOReader.
+
+**Updating later** is the same, smaller: in the `bookhoard.koplugin` folder,
+`git pull`, then restart KOReader.
 
 ### Step 2: Point the Plugin at Your Server
 
-1. Open KOReader, tap the **wrench icon** at the top
+1. Open KOReader, tap the **wrench icon** at the top (the tools menu)
 2. Find and tap **Bookhoard sync**
 3. Tap **Server URL**, enter your server address, then tap **OK**:
 
@@ -87,34 +105,116 @@ Setup is done **on the server**: you approve the device from the Bookhoard web i
 
    Use your server's LAN IP (or domain if you have one configured).
 
-### Step 3: Approve the Device in Bookhoard
+### Step 3: Register the Device
 
-1. On your computer or phone, open Bookhoard and go to the **Devices** page (sidebar navigation)
-2. Refresh the page — your device appears under **Pending Device Registrations**
-3. Click **Approve** to connect the device
+1. In the same **Bookhoard sync** menu, tap **Register device**
+2. On your computer or phone, open Bookhoard and go to the **Devices** page
+   (sidebar navigation)
+3. Your device appears under **Pending Device Registrations** — click
+   **Approve** to connect it
 
-Once approved, the plugin picks up its credentials automatically — reading progress sync and OPDS catalog access are set up automatically. No further configuration is needed.
+The plugin waits on the device and finishes by itself the moment you
+approve. Once approved, its credentials are stored automatically, sync
+events are armed, and Bookhoard's OPDS catalog is added to your KOReader —
+no further configuration is needed.
 
-> **Note:** Pending registrations expire after 5 minutes. If yours expires, just re-run the sync from the plugin menu and approve again.
+> **Note:** Pending registrations expire after 5 minutes. If yours expires
+> ("Registration expired"), just tap **Register device** again and approve.
 
 ### Auth Token (Advanced)
 
-The Devices page shows each KOReader device's **Auth Token**. You normally never need it (the plugin receives it automatically during approval), but it can be re-entered manually in the plugin settings if you're moving a setup between devices or debugging.
+The Devices page shows each KOReader device's **Auth Token**. You normally
+never need it (the plugin receives it automatically during approval), but it
+can be re-entered manually in the plugin settings if you're moving a setup
+between devices or debugging.
+
+## The Bookhoard sync menu
+
+Everything the plugin can do lives in one place: **wrench icon → Bookhoard
+sync**. The menu changes shape depending on whether you are connected.
+
+### Before you're connected
+
+- **Server URL** — your server's address
+- **Register device** — starts the approval flow above
+
+### Once connected — one-tap actions
+
+| Menu item | What it does |
+| --- | --- |
+| **Push progress from this device** | Force-push this device's position to the server |
+| **Pull progress from server** | Force-pull the server's position onto this device |
+| **Sync rating, review & time now** | Push your rating, review, and accumulated reading time for the current book immediately |
+| **Setup OPDS catalog** | (Re-)adds Bookhoard's catalog to KOReader's OPDS list — normally done for you at approval |
+| **Device info** | Shows this device's ID and the server it talks to |
+| **Disconnect** | Forgets the device's credentials (after a confirmation) |
+
+### Automatically push progress
+
+This toggle is the on/off switch for background sync — **it starts off**, so
+after approval, turn it on to get automatic syncing. With it on, progress
+pushes as you read and on close/suspend; the plugin may prompt about turning
+Wi-Fi on at those moments depending on your device.
+
+Two related settings sit under it:
+
+- **Periodically sync every # pages** — how many page turns between updates
+  (default 50; set 0 to disable periodic updates)
+- **Sync mode** — **Immediate** pushes right away, **Checkpoint** batches
+  changes for slower connections or battery saving
+
+### Sync behavior — who wins when states differ
+
+These two settings decide what the device does when its progress and the
+server's disagree, without you opening the Conflicts page:
+
+- **Sync to a newer state** — the server has *newer* progress than this
+  device (default **Prompt**: the device asks before adopting it; alternatives
+  are **Silently** or **Never**)
+- **Sync to an older state** — this device has *newer* progress than the
+  server (default **Never**: the device never rolls itself back)
+
+Set both to **Silently** for hands-off syncing, or leave the defaults if you
+want a say whenever progress would move.
+
+### What to sync
+
+Seven toggles, all on by default, each controlling one kind of data:
+
+- **Reading progress**
+- **Bookmarks**
+- **Highlights**
+- **Notes**
+- **Ratings** — your book ratings made in KOReader
+- **Book review** — your review text
+- **Reading time** — time-spent statistics
+
+Turn off anything you'd rather keep local; the rest keeps flowing both ways.
 
 ## What Syncs
 
-Once connected, the following sync automatically in both directions between KOReader and Bookhoard (web and other devices):
+Once connected and enabled, the following sync in both directions between
+KOReader and Bookhoard (web, Android, and other devices), each governed by
+its toggle above:
 
 - **Reading position** — percentage, chapter, and EPUB CFI where available
 - **Bookmarks**
-- **Highlights** — including highlight colors, mapped between the web and KOReader palettes
+- **Highlights** — including highlight colors, mapped between the web and
+  KOReader palettes
 - **Notes** — standalone and attached to highlights
+- **Ratings, review, and reading time** — pushed to the server (push any
+  time from the menu with **Sync rating, review & time now**)
 
-Books are matched automatically using UUIDs, file hashes (SHA-256, format-aware so converted files still match), file aliases, and title/author fallback. If a book can't be matched, it shows up under the device's **Unlinked Books** in Bookhoard, where you can link it manually.
+Books are matched automatically using UUIDs, file hashes (SHA-256,
+format-aware so converted files still match), file aliases, and
+title/author fallback. If a book can't be matched, it shows up under the
+device's **Unlinked Books** in Bookhoard, where you can link it manually.
 
 ## OPDS Wireless Book Delivery
 
-Once your device is approved, the plugin also registers Bookhoard's OPDS catalog, so you can browse and download books wirelessly — no USB cable needed.
+At approval the plugin adds Bookhoard's OPDS catalog to KOReader (and
+**Setup OPDS catalog** re-adds it any time), so you can browse and download
+books wirelessly — no USB cable needed.
 
 ### Browse and Download Books
 
@@ -129,7 +229,8 @@ Once your device is approved, the plugin also registers Bookhoard's OPDS catalog
 - **PDF**: Fixed-layout documents
 - **CBZ**: Comic book archives
 
-Books downloaded via OPDS are automatically matched to your library, so their progress syncs from the first page.
+Books downloaded via OPDS are automatically matched to your library, so
+their progress syncs from the first page.
 
 ## Troubleshooting
 
@@ -142,7 +243,7 @@ Books downloaded via OPDS are automatically matched to your library, so their pr
 1. Verify the Server URL is correct (no trailing path — just the base address)
 2. Make sure KOReader is connected to Wi-Fi
 3. Check the Bookhoard server is reachable from the device's network
-4. Registrations expire after 5 minutes — re-run the sync and approve quickly
+4. Registrations expire after 5 minutes — tap **Register device** again and approve quickly
 
 ### Connection Refused
 
@@ -161,11 +262,18 @@ Books downloaded via OPDS are automatically matched to your library, so their pr
 
 **Solutions**:
 
-- Trigger a manual sync from the plugin menu
+- **Automatically push progress** defaults to off — turn it on in the menu, or push once with **Push progress from this device**
 - Check the device shows as enabled on the **Devices** page (open its settings from the icon next to the device)
 - Verify the book appears as an unlinked book for the device and link it if needed
 - Check Bookhoard server logs for errors
 
+### Turning on auto-sync asks about Wi-Fi
+
+If enabling **Automatically push progress** shows a message about
+**"Action when Wi-Fi is off"**, open KOReader's Network settings and set
+that action to **turn on** — auto-sync needs permission to bring Wi-Fi up by
+itself.
+
 ### Conflicts Detected
 
 **Problem**: Sync conflicts when reading the same book on multiple devices
@@ -174,7 +282,10 @@ Books downloaded via OPDS are automatically matched to your library, so their pr
 
 1. Open the book's detail page and click **Sync Progress**, or open the Conflicts page (`/conflicts`)
 2. Review the progress reported by each device
-3. Choose which device's progress to keep
+3. Choose a resolution: keep one side's progress, keep the server's, or let the furthest progress win
+
+For day-to-day control of the same question on the device itself, use the
+**Sync behavior** settings (newer state / older state).
 
 ## Security Best Practices
 
@@ -189,8 +300,3 @@ Books downloaded via OPDS are automatically matched to your library, so their pr
 - [KOReader Forum](https://www.mobileread.com/forums/forumdisplay.php?f=271)
 - [Bookhoard Universal Sync Guide](../sync-guide.md)
 - [Bookhoard KOReader Plugin](https://git.linuxhg.com/Bookhoard/bookhoard.koplugin)
-
----
-
-**Last Updated**: August 2026
-**Bookhoard Version**: 1.0

docs/user/filters/cookbook.md

@@ -0,0 +1,78 @@
+# Filter cookbook
+
+Real questions, exact clicks. Every recipe uses the same builder described in
+[the guide](index.md) — same fields, same rules, wherever filters live.
+
+Recipes marked **collection** become smart collections that stay current forever; the rest are
+drawer filters you can save with a name.
+
+---
+
+## "New chapters of 7th Son, automatically" — collection
+
+1. **Collections** → open (or create) a collection → **Rules**.
+2. The scope is already *Episodes*. Add a rule: **Feed** → **in** → pick
+   *7th Son: Book One* (it becomes a chip — hit the × if you pick wrong).
+3. Add a second rule: **Title** → **contains** → `Chapter`.
+4. The header should read **MATCH ALL** (it does by default — every rule must match).
+5. **Apply to Collection**. Done: new chapters appear on their own, and the listening order
+   starts at **Feed order (reversed)** — chapter 1 first.
+
+---
+
+## "Lewis Carroll or George Orwell" — drawer
+
+1. **Filters** on the All Books page. Add: **Author** → **contains** → `Carroll`.
+2. Add a second rule: **Author** → **contains** → `Orwell`.
+3. Click the group header **MATCH ALL** once — it flips to **MATCH ANY** (or click the `AND`
+   chip between the two rules, same effect).
+4. **Apply Filters**. Either author is enough.
+
+*Flip it back to ALL and you'd get only books they both wrote — which is none, and the counter
+will tell you so before you apply.*
+
+---
+
+## "Long fantasy books I haven't started" — drawer
+
+1. **Genre** → **is** → `fantasy`.
+2. **Page count** → **at least** → `400`.
+3. **My reading** → **Reading status** → **is** → *Unfinished* (or your app's wording — the
+   status list is the fixed dropdown on that field).
+4. **MATCH ALL** stays on: all three must hold.
+5. Apply — then **Save** it as *"Big unread fantasy"* and it's in the Load menu forever.
+
+---
+
+## "Downloaded podcast episodes I haven't played" — collection
+
+1. A collection with an Episodes scope (see the first recipe — drop the Title rule if you want
+   whole feeds).
+2. **Downloaded** → **is true**.
+3. **Played** → **is false**.
+4. **MATCH ALL** on. **Apply to Collection**.
+
+---
+
+## "Added to my library this month" — drawer
+
+1. **Date added** → **within the last** → `30` (the days box — the field's page in
+   [Every filter field](fields.md) has its exact questions).
+2. Optionally **MATCH ALL** with **Library** → **in** → your audiobooks library.
+3. Save as *"New arrivals"*.
+
+---
+
+## "A dashboard shelf that builds itself" — dashboard
+
+1. Create a collection with the rules above (or open one).
+2. On the dashboard, add a section pointed at that collection.
+3. The shelf re-fills itself as your library changes — no maintenance.
+
+---
+
+## Sharing a filtered view
+
+Apply any filter, then copy the address bar. The filter rides in the URL — send it to another
+user of your server and they open the same narrowed view (they see it through their own
+libraries, not yours).

docs/user/filters/fields.md

@@ -0,0 +1,755 @@
+<!-- GENERATED by TestFieldReferenceDocIsCurrent (internal/services/filter_docs_test.go)
+     from the filter registry — the same source the real menus render. DO NOT EDIT by hand:
+     regenerate with FILTER_DOCS_REGEN=1 go test ./internal/services -run TestFieldReferenceDocIsCurrent -->
+
+# Every filter field
+
+This is the complete list of everything the filters can ask about, generated straight from the
+same source the app's menus render — it cannot drift from what you see in the UI.
+
+Filters come in two worlds:
+
+- **Books** — rules about books and your reading of them.
+- **Episodes** — rules about podcast episodes (feeds, downloaded, played).
+
+Every rule is **a field + a question + your values**. The "Ask" column is the question;
+the "Your values" column is what you provide. The **default** question is what a new rule
+starts with.
+
+## Books
+
+### Book facts
+
+**Title** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Subtitle** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Description** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Summary** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**Language** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Page count** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Chapter count** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Total characters** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Community rating** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Date added** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**Date imported** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**Web URL** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**Metadata notes** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**ISBN** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick |
+| isn't | matches anything but this |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**ASIN** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick |
+| isn't | matches anything but this |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**File size** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**File availability** — Choose from a fixed list of options.
+
+| Ask | Means |
+| --- | --- |
+| is | matches exactly *(default)* |
+| isn't | matches anything but this |
+
+**Explicit** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Abridged** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Manually edited** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Cover** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**Added by** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+### Comics & manga
+
+**Series** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Series number** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Series count** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Volume** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Format group** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+
+**File type (mime)** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+
+**Reflowable** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Fixed layout** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Black & white** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Manga type** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Reading direction** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+| is empty | — |
+
+### Library
+
+**Library** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+
+### My reading
+
+**Reading status** — Choose from a fixed list of options.
+
+| Ask | Means |
+| --- | --- |
+| is | matches exactly *(default)* |
+
+**Progress percent** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Last read** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**My rating** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| is | matches exactly |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| unrated | — |
+
+**Has review** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**Notes** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+| within the last | — |
+
+**Highlights** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+| within the last | — |
+
+**Note text** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is empty | — |
+
+**Highlight text** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is empty | — |
+
+**Time spent (minutes)** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+
+**Pages read** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+
+**In collection** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| in | is one of the ones you pick (any one is enough) *(default)* |
+| isn't in | is none of the ones you pick |
+| in any | is in at least one of the collections you pick |
+| in none | — |
+
+### People
+
+**Author** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Narrator** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Contributor** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+### Publishing
+
+**Publisher** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Imprint** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Edition** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Published year** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Published date** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+### Topics
+
+**Genre** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Tags** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Story arc** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Age rating** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+| is empty | — |
+
+## Podcast episodes
+
+### Book facts
+
+**Title** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Description** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Language** — Type words.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is | matches exactly |
+| isn't | matches anything but this |
+| is empty | — |
+
+**Chapter count** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Date added** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**Date imported** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**File size** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**File availability** — Choose from a fixed list of options.
+
+| Ask | Means |
+| --- | --- |
+| is | matches exactly *(default)* |
+| isn't | matches anything but this |
+
+**Explicit** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+### Comics & manga
+
+**File type (mime)** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+
+### Episodes
+
+**Feed** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| in | is one of the ones you pick (any one is enough) *(default)* |
+| isn't in | is none of the ones you pick |
+| has | has a value |
+| missing | is empty or missing |
+
+**Downloaded** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on *(default)* |
+| is false | is switched off |
+
+**Played** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| is true | is switched on |
+| is false | is switched off *(default)* |
+
+### Library
+
+**Library** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| is | is one of the ones you pick *(default)* |
+| isn't | matches anything but this |
+
+### My reading
+
+**Progress percent** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Last read** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+**My rating** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| is | matches exactly |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| unrated | — |
+
+**Has review** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+
+**Notes** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+| within the last | — |
+
+**Highlights** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| has | has a value *(default)* |
+| missing | is empty or missing |
+| within the last | — |
+
+**Note text** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is empty | — |
+
+**Highlight text** — No value needed — the question is the whole rule.
+
+| Ask | Means |
+| --- | --- |
+| contains | contains these words *(default)* |
+| doesn't contain | does NOT contain these words |
+| is empty | — |
+
+**Time spent (minutes)** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+
+**In collection** — Pick from a dropdown of real names — picks become removable chips, and you can pick several.
+
+| Ask | Means |
+| --- | --- |
+| in | is one of the ones you pick (any one is enough) *(default)* |
+| isn't in | is none of the ones you pick |
+| in any | is in at least one of the collections you pick |
+| in none | — |
+
+### Publishing
+
+**Published year** — Type a number.
+
+| Ask | Means |
+| --- | --- |
+| between | falls between two numbers |
+| at least | is at least this *(default)* |
+| at most | is at most this |
+| is empty | — |
+
+**Published date** — Type a number of days.
+
+| Ask | Means |
+| --- | --- |
+| within the last | — *(default)* |
+| between | falls between two numbers |
+| is empty | — |
+
+---
+
+*Anything here that doesn't match what the app actually shows is a bug — this page is generated
+from the app's own menus and a test fails if they ever disagree.*

docs/user/filters/index.md

@@ -0,0 +1,91 @@
+# Filters — the complete guide
+
+Filters answer one question: *of everything in my library, show me the ones that match.*
+
+You'll meet the same filter system in three places:
+
+| Place | What it's for |
+| --- | --- |
+| **The Filters drawer** (All Books / Podcasts pages) | A quick, temporary narrowing of what you see. Save it if you want to keep it. |
+| **Smart collections** (a collection's **Rules** page) | A filter that *lives* — the collection's contents update automatically forever. |
+| **Dashboard sections** | The same rules, feeding a shelf on your home screen. |
+
+One system, one set of skills, three payoffs.
+
+## Two worlds: Books and Episodes
+
+Rules about **books** (authors, series, your reading progress) and rules about **podcast episodes**
+(feeds, downloaded, played) are two different worlds. The field menus only show the fields that
+make sense where you are — you'll never see a podcast field on the All Books page. The complete
+list of every field is in [Every filter field](fields.md).
+
+## Anatomy of a rule
+
+Every rule is **a field + a question + your values**:
+
+> **Author** *contains* `asc`
+
+> **Feed** *in* `7th Son: Book One`
+
+> **Page count** *at least* `400`
+
+The field is *what* you're asking about. The question (contains, at least, is empty…) is *how*.
+Your values are *what counts as a match*. The complete questions per field are in
+[Every filter field](fields.md).
+
+## Picking values
+
+Two kinds of value boxes:
+
+- **Dropdown boxes** (Feed, Library, Collection, Added by): start typing and real names appear,
+  with live counts of how much matches. Click to pick — each pick becomes a **chip** with a little
+  **×** to remove it. Pick as many as you like; *any one of them* matching is enough.
+- **Typed boxes** (Author, Title, Page count…): just type. Several words means "contains these
+  words"; number boxes take numbers; date boxes take a number of days.
+
+The dropdown's counts are **live under your other rules**: if you've already narrowed to
+*Title contains Chapter*, the feed menu shows how many Chapter-titled episodes each of your feeds
+has. Rules already picked disappear from their own menu (removing a chip brings them back).
+
+## Groups: ALL and ANY
+
+When you have several rules, the group header — **MATCH ALL** or **MATCH ANY** — decides how they
+combine:
+
+- **MATCH ALL** — *every* rule must match. (The default, and what you want almost always.)
+- **MATCH ANY** — *at least one* rule matching is enough. This is how you ask for
+  "Lewis Carroll **or** George Orwell".
+
+**Click the header to switch it.** It says what it does, and clicking flips it.
+
+`+ group` adds a nested group with its own header (**GROUP ALL / GROUP ANY**), so bigger shapes
+build naturally:
+
+> Match ALL: Author *contains* `Carroll` **AND** GROUP ANY (Title contains `Alice` **OR** Title
+> contains `Wonderland`)
+
+For fine-tuning inside an ALL group, the small **AND / OR** chip between two rules mixes them —
+click `AND` and it becomes `OR`, joining those neighbors together. (The header switch and these
+chips are two different tools: the header sets the group's overall combine; a chip makes just two
+neighboring rules special.)
+
+## The live count
+
+While you build, the counter at the bottom — *N books match* — runs your rules against the real
+library. It's the exact number you'll get when you apply.
+
+## Defaults worth knowing
+
+- **Podcast listening order**: podcast pages and new podcast collections start at
+  **Feed order (reversed)** — book order, chapter 1 first. Change it per feed or collection from
+  the order dropdown; your choice sticks.
+- **Hidden libraries** (family lens) never match — a filter can't accidentally surface a library
+  that's hidden from you.
+- **Episodes that aren't downloaded** stay out of playback chains (they still appear in lists).
+
+## Keeping a filter
+
+- **Save** (drawer): name it; it appears in the **Load** menu from then on.
+- **Apply to Collection** (rules page): the filter becomes the smart collection — live forever.
+- Filtered views are **shareable**: the URL carries the filter, so a bookmark or sent link opens
+  the same view.

docs/user/frontend-guide.md

@@ -1,16 +0,0 @@
-# Frontend Guide
-
-**Coming Soon**
-
-This guide will cover:
-
-- Navigating the Bookhoard web interface
-- Browsing and searching your library
-- Managing collections
-- Viewing reading progress
-- Using notes and highlights
-- Personalizing your experience
-
----
-
-_In the meantime, check out our [Device Setup Guides](devices/)_

docs/user/library-browsing.md

@@ -1,58 +1,43 @@
-# Saving Custom Filters
+# Browsing your library
 
-The bookshelf (**All Books**) page lets you save custom filter presets for quick access.
+Everything starts from the **All Books** page: every book you can see in the
+current library, as a wall of covers. From there you narrow, sort, and open.
 
-## Bookshelf Toolbar
+## The All Books toolbar
 
-The All Books page has a toolbar with:
+- The **search box** finds titles, authors, and more as you type
+- The **Sort** dropdown orders the wall: **Title (A-Z)**, **Title (Z-A)**,
+  **Author (A-Z)**, **Date Added**, or **Page Count**
+- The **Filters** button opens the filter drawer — authors, tags, series,
+  progress, and every other field (the full how-to lives in
+  [Filters — the complete guide](filters/index.md); this page sticks to
+  browsing)
+- **Save**, **Load**, and **Clear** manage your saved filters: capture the
+  current drawer state under a name, re-apply it any time, and delete ones
+  you no longer want. Saved filters are private to your account.
 
-- A **search input** for quick text searches
-- A **sort** dropdown (title, author, date added, page count)
-- A **Filters** button that opens the filter drawer (author, tags, series, and more)
-- **Save**, **Load**, and **Clear** buttons for filter presets
+Saved filters pair naturally with [smart collections](collections.md): a
+filter answers "what matches right now?", a smart collection keeps matching
+forever.
 
-## How to Save a Filter
+## Opening a book
 
-1. Navigate to the **All Books** page
-2. Click **Filters** to open the drawer, set your desired filters, and click **Apply Filters**
-3. Click the **Save** button in the toolbar
-4. Enter a name for your filter (e.g., "My Sci-Fi Books")
-5. Click **Save**
+Click any cover to open the book's detail page — description, files, your
+progress, actions to read or listen, and the places to edit metadata or fix
+what a scan guessed wrong. The detail page is the hub: series links,
+reviews, bookmarks, and the edit modal all live there.
 
-## Loading Saved Filters
+## Series
 
-1. Click the **Load** button to open the **Saved Filters** dropdown
-2. Click a filter's name to apply it
-3. The filter values are applied instantly, without a page reload
+A book's detail page links to its **series page** — every book in that
+series, in order, for the same library. Series are one of the fields the
+filter drawer can match on too.
 
-## Managing Saved Filters
+## Podcasts are separate
 
-**Delete a filter:**
+Podcast feeds and episodes live on the **Podcasts** page, not the book wall —
+see [Podcasts](podcasts.md).
 
-1. Click the **Load** button to open the **Saved Filters** dropdown
-2. Click the trash icon next to the filter you want to remove
-3. Confirm deletion
-
-**Filter Privacy:**
-
-Saved filters are **private to your account**. Other users cannot see or modify your filters.
-
-## Common Use Cases
-
-**Reading by Genre:**
-
-1. Filter by tag: "Science Fiction"
-2. Save as "Sci-Fi Books"
-3. Quickly access all your sci-fi collection anytime
-
-**Author Collections:**
-
-1. Filter by author: "Isaac Asimov"
-2. Save as "Asimov Books"
-3. Switch between different author collections instantly
-
-**Series Tracking:**
-
-1. Filter by series: "Foundation"
-2. Save as "Foundation Series"
-3. Track your progress through a series
+*Finding your way back:* **All Books** is the wall-of-covers page with the
+**Filters** button; the same toolbar pattern is what you'll see on the
+Podcasts page.

docs/user/podcasts.md

@@ -0,0 +1,47 @@
+# Podcasts
+
+Bookhoard is not just books: it also runs your podcast subscriptions. You
+subscribe to feeds, episodes download for offline listening, and you can
+play a run of episodes back-to-back — a feed, or a hand-picked sequence.
+
+## The Podcasts page
+
+Open **Podcasts** from the sidebar. The page is your subscriptions:
+
+- **Continue** — the episode you were in the middle of, ready to resume
+- **All Feeds** — every feed you subscribe to
+- **Search** narrows your feeds and episodes
+- Each feed's page holds its episodes, with **Download All** for grabbing
+  everything at once
+
+Subscriptions live in your **Podcasts library** (feeds manage it themselves —
+you won't see it in the regular library switcher, and it never mixes into
+the book wall on **All Books**).
+
+## Subscribing to a feed
+
+1. Click **Add Feed** on the Podcasts page
+2. In the **Add Podcast Feed** panel, paste the show's **RSS feed URL**
+3. Choose the **Library** the podcast belongs to
+4. Optionally: check **Download all episodes now** to grab the back catalog
+   immediately, and pick the **Download order** for new episodes — **Feed
+   order**, **Feed order (reversed)**, **Oldest first (pub date)**, or
+   **Newest first (pub date)**
+5. Click **Add & Subscribe**
+
+From then on Bookhoard watches the feed: new episodes appear as the show
+publishes them, downloaded according to the order you picked.
+
+## Playing episodes
+
+Click an episode to open the audio player. The player keeps your place,
+supports bookmarks, a chapter list where the show provides chapters, and
+playback speed — the same speed and resume-rewind defaults you set on your
+[profile](profile-guide.md) apply here.
+
+To play many episodes in a row, use a collection: episode collections have a
+**Play as Sequence** button and their own listening order — see
+[Collections](collections.md).
+
+*Finding your way back:* **Podcasts** is the sidebar page whose header reads
+"Your subscriptions" — the only page with the **Add Feed** button.

docs/user/profile-guide.md

@@ -1,99 +1,49 @@
-# Profile Management Guide
+# Your profile
 
-## Updating Your Profile
+Your profile page holds everything that is about *you* rather than your
+books: account details, playback preferences, your password, and — if you
+ever need it — account deletion.
 
-Your profile contains your account information and preferences.
+Open it from the sidebar: click your **username** at the bottom, then
+**Profile**.
 
-### How to Update
+## Account information
 
-1. Click on your **username** at the bottom of the sidebar to expand the account menu
-2. Select **Profile**
-3. Edit any fields in the "Account Information" section
-4. Click **Save Changes**
-5. Changes take effect immediately
+| Field | What it does |
+| --- | --- |
+| **Username** | Your login name — must stay unique |
+| **Email Address** | Must stay unique |
+| **First Name / Last Name** | Optional display names |
+| **Theme** | A quick theme picker (seven favorites — see below for the full set) |
+| **Default Playback Speed** | The speed audiobook playback starts at |
+| **Resume Rewind** | Jumps back a few seconds when you resume playback (**Off (exact resume)**, 5, or 10 seconds) |
+| **Keep Screen Awake** | Stops the screen sleeping during playback |
+| **Timezone** | All times the server shows you (activity, stats, history) are rendered in this zone |
 
-### Fields You Can Update
+Changes save from the form's save button and apply immediately.
 
-- **Username** - Your login name (must be unique)
-- **Email** - Your email address (must be unique)
-- **First Name** - Optional display name
-- **Last Name** - Optional display name
-- **Theme** - Your preferred color scheme
+About the two theme doors: the profile's **Theme** select offers seven
+quick picks. The sidebar's **Appearance** panel offers the full collection —
+[Themes and Wood Paneling](themes.md) covers it, including the bookshelf
+wood textures, which are per-browser and not part of your account.
 
-## Changing Your Password
+## Changing your password
 
-Regular password changes are recommended for account security.
+On the same page, the **Change Password** section asks for your **Current
+Password**, a **New Password**, and **Confirm New Password**. The
+requirements are checked as you type; click **Update Password** to save.
 
-### How to Change
+## Deleting your account
 
-1. Go to **Profile** page
-2. Scroll to "Change Password" section
-3. Enter your **current password**
-4. Enter your **new password**
-5. **Confirm** your new password
-6. Click **Update Password**
+The **Danger Zone** at the bottom holds **Remove My Account**. Deletion
+removes your account and everything personal to it — profile, reading
+progress and history, device registrations, your collections — and keeps the
+libraries themselves, since books belong to the library, not to you. It
+cannot be undone.
 
-### Password Requirements
+The last administrator cannot delete their own account — one admin must
+always remain.
 
-- Minimum 8 characters
-- Must contain uppercase, lowercase, number, and special character
-- Must match confirmation field
-- Current password must be correct
-
-## Deleting Your Account
-
-**⚠️ WARNING:** This action cannot be undone.
-
-### What Gets Deleted
-
-When you delete your account:
-
-- Your profile information
-- Reading progress and history
-- Device connections
-- Collection preferences
-- All personal data
-
-### What Stays
-
-- Library books (media belongs to the library, not you)
-- System settings
-- Other users' accounts
-
-### How to Delete
-
-1. Go to **Profile** page
-2. Scroll to "Danger Zone" (bottom of page)
-3. Click **Remove My Account**
-4. Confirm the deletion prompt
-
-**Note:** If you're the last admin, you cannot delete your account for security reasons.
-
-## Theme Options
-
-Personalize your reading experience with different color themes.
-
-### Quick Theme Switch
-
-1. In the sidebar, open the **Appearance** panel (palette icon, near the bottom)
-2. Select a theme from the list; your active theme is marked with a checkmark
-3. Changes apply instantly
-
-For the full theme list and bookshelf background (wood) options, see [Themes and Wood Paneling](themes.md).
-
-### Available Themes
-
-- **Tokyo Night** (default) - Blue/purple accents
-- **Dracula** - Purple/pink tones
-- **Nord** - Arctic, bluish-gray
-- **Solarized Dark** - Warm, precise contrast
-- **Monokai** - Classic vibrant colors
-- **One Dark Pro** - Atom editor inspired
-- **Material Dark** - Google Material Design
-- **Catppuccin Mocha / Macchiato / Frappé / Latte** - Soothing pastel palettes (Latte is light)
-
-## For Admin Users
-
-If you're an administrator, you can also manage other users' profiles from the admin panel.
-
-See [Admin User Management](admin-guide.md) for details.
+Administrators can also edit other users' profiles (including resetting a
+password without the current one) from the admin area; that is covered with
+the rest of the admin docs.

docs/user/reader-guide.md

@@ -2,7 +2,8 @@
 
 Bookhoard's built-in web reader works in any modern browser — desktop or
 mobile — and keeps your position, highlights, bookmarks, and notes in sync
-with the Android app and KOReader.
+with the Android app and KOReader. Audiobooks get their own player, covered
+at the end of this guide.
 
 ## Opening a Book
 
@@ -79,3 +80,25 @@ to jump to it.
 Position, highlights, bookmarks, and notes sync automatically through the
 server (see the [Sync Guide](sync-guide.md)). Close the tab whenever you
 like — the reader resumes exactly where you left off on any device.
+
+## Listening to audiobooks and podcast episodes
+
+Books with audio files, and podcast episodes, open in the audio player
+instead of the page reader. It is one player for both:
+
+- The **seek bar** is your position; drag it, or use the **previous /
+  next episode** controls when you are playing a sequence
+- **Bookmarks** opens a panel of your markers for this title — tap one to
+  jump back
+- **Chapters** opens the chapter list (shows "currently chapter N of M");
+  audiobooks with embedded chapters and podcast shows with chapter marks
+  both land here
+- **Player settings** holds the per-player preferences: **Autoplay on
+  open**, **Default playback speed**, and **Resume rewind** (a few seconds
+  back when you resume — the defaults come from your
+  [profile](profile-guide.md) and this panel overrides them per player)
+- The **Shortcuts & interactions** panel (the **?** control) lists every
+  keyboard shortcut
+
+Progress, bookmarks, and your speed carry across devices through the same
+sync as everything else.

docs/user/searching-and-filtering.md

@@ -35,3 +35,12 @@ You can combine tags with other filters:
 - Tags use fuzzy matching - "Sci Fi" will match "Science Fiction"
 - Best matching tags appear first in results
 - Autocomplete shows existing tags as you type with relevance scores
+
+
+## The complete filter guide
+
+The filters described above are one system that also powers smart collections and dashboard
+sections — groups with ALL/ANY, saved filters, and every field listed. The full manual lives in
+[this folder](filters/index.md): the [guide](filters/index.md), the
+[cookbook](filters/cookbook.md) of ready-made recipes, and the generated
+[field reference](filters/fields.md).

docs/user/settings-guide.md

@@ -1,15 +0,0 @@
-# Settings Guide
-
-**Coming Soon**
-
-This guide will cover:
-
-- Account settings
-- Display preferences (themes, fonts)
-- Sync configuration
-- Device management
-- Privacy options
-
----
-
-_In the meantime, check out our [Device Setup Guides](devices/)_

docs/user/sync-guide.md

@@ -1,591 +1,135 @@
-# Bookhoard Universal Sync - User Guide
+# Universal Sync — how your devices stay in step
 
-## Table of Contents
+Sync is the promise that makes Bookhoard more than a web page: read on
+whatever is in your hands, and every other device catches up. One server
+holds the truth for each book — your position, bookmarks, highlights, and
+notes — and every registered device pushes and pulls against it.
 
-1. [What is Universal Sync?](#what-is-universal-sync)
-2. [Supported Devices](#supported-devices)
-3. [Getting Started](#getting-started)
-4. [Device Setup](#device-setup)
-5. [Using Sync Features](#using-sync-features)
-6. [Book Matching](#book-matching)
-7. [Managing Conflicts](#managing-conflicts)
-8. [Best Practices](#best-practices)
+## Supported devices today
 
----
+| Platform | Status | How it syncs |
+| --- | --- | --- |
+| **Web browser** | ✅ Fully supported | Live, as you read — the reader saves position and annotations continuously |
+| **Android app** | ✅ Fully supported | The native client: progress, highlights, bookmarks, notes; reads offline and queues changes until you are back online |
+| **KOReader** (Kindle, Kobo, PocketBook) | ✅ Fully supported | The Bookhoard KOReader plugin, over Wi-Fi |
+| **Kobo, stock firmware** | 🚧 Server support complete | The native Kobo protocol is implemented and documented server-side; device-side enablement is the remaining piece — [Kobo Setup](devices/kobo-setup.md) has the details |
 
-## What is Universal Sync?
+Kindle and reMarkable are under consideration; KOReader already covers
+several of those devices today.
 
-**Universal Sync** is Bookhoard's cross-platform synchronization system that keeps your reading progress, highlights, and notes in sync across all your devices - automatically and in real-time.
+## Getting a device into the circle
 
-### Key Features
+1. Connect the device to your server (each guide above walks its own path)
+2. Approve the pending registration on the **Devices** page — the Android
+   app registers itself on first login; KOReader asks from its plugin
+3. Done. Sync starts as soon as a device is approved
 
-🔄 **Automatic Sync** - Your reading progress syncs automatically when you turn pages
+The **Devices** page is mission control: see every registered device and
+when it was last seen, remove a device (revoking its access instantly), and
+work through **unlinked books** — device files that could not be matched to
+a library book yet.
 
-📱 **Multi-Platform** - Works with web browsers and KOReader, with native Kobo sync and mobile apps on the roadmap
+## Book matching
 
-📍 **Precise Location Tracking** - Supports EPUB CFI, page numbers, percentages, and character offsets
+When a device reports a book, Bookhoard tries to match it to your library
+by fingerprint, strongest first:
 
-⚡ **Real-Time Updates** - See your progress update across all devices instantly
+1. **Bookhoard UUID** — 100% confidence
+2. **OPF UUID** — 95%
+3. **SHA-256 hash** — 90%
+4. **OPF identifier** — 85%
+5. **ISBN / ASIN** — 80%
+6. **Title + Author + file size** — 50%
+7. **Title only** — 30% (last resort, only tried when nothing else matched)
 
-🔒 **Secure** - No passwords on devices, web-based authentication only
+Books that match automatically never bother you. The ones that can't
+(side-loaded files, converted formats like EPUB → KEPUB, mismatched
+metadata) land in the device's **unlinked books** list, where you can:
 
-📴 **Offline Support** - Queue changes when offline, sync when reconnected
+- **Auto-link** everything above a confidence threshold
+- Review **suggestions** first, then link
+- **Link by hand** — pick the right library book yourself
 
----
+## What syncs
 
-## Supported Devices
+**Reading progress** — page, percentage, chapter position, EPUB CFI, last
+read time. EPUBs sync by percentage and CFI, PDFs and comics by page, so
+the same book lines up on devices with different page counts.
 
-### Currently Supported ✅
+**Highlights and notes** — the highlighted text, your note, its color, and
+where it sits. Locations are stored in several forms at once (page, EPUB
+CFI, percentage, character offset), which is why a highlight made on your
+phone lands in the right place on an e-reader with different pagination.
 
-| Platform         | Status             | Sync Method                 | Notes                              |
-| ---------------- | ------------------ | --------------------------- | ---------------------------------- |
-| **Web Browser**  | ✅ Fully Supported | Real-time WebSocket         | Any modern browser                 |
-| **KOReader**     | ✅ Fully Supported | Wi-Fi (Bookhoard plugin)    | Kindle, Kobo, PocketBook hardware  |
+**Bookmarks** — location, title, and when you made them.
 
-### Coming Soon 🚧
+Everything above is per-user and private: your devices see your data
+because you approved them, other users see theirs, and revoking a device
+ends its access on the spot.
 
-| Platform              | Status                                                        |
-| --------------------- | ------------------------------------------------------------- |
-| **Kobo Devices**      | Native sync coming soon — use KOReader on Kobo hardware today |
-| **Mobile Apps**       | Android/iOS apps coming later                                 |
+## Conflicts
 
-### On the Roadmap 🔭
+If the same book is read on two devices close together, Bookhoard does not
+silently pick a winner — it records a **sync conflict** and shows it to
+you:
 
-| Platform              | Status                                   |
-| --------------------- | ---------------------------------------- |
-| **Kindle Devices**    | Under consideration (no date yet)        |
-| **Remarkable Tablet** | Under consideration (no date yet)        |
+- The book's detail page grows a **Sync Progress** button (with a
+  "Progress conflict detected" notice)
+- The **Conflicts** page (`/conflicts`) lists everything unresolved
 
----
+Resolving means choosing a strategy: keep one side's progress, keep the
+server's current value, or let the **furthest progress win**. Until you
+resolve, the conflict stays listed — nothing is lost, it just waits for
+your call.
 
-## Getting Started
+## Offline reading
 
-### Prerequisites
+Devices keep working without the server. The Android app reads fully
+offline and queues your changes, draining the queue when you reconnect.
+E-readers push their progress on the next connection. The server holds a
+per-device queue for inbound work and retries failures automatically; if
+items pile up (a device offline for weeks), an admin can retry or clear a
+device's queue from the server side.
 
-1. **Bookhoard Server** - Self-hosted instance running and accessible
-2. **Network Connection** - Devices must be able to reach your Bookhoard server
-3. **User Account** - Created and logged in to Bookhoard web interface
+## Reading history
 
-### Quick Start
-
-1. **Set up your first device** - See [Device Setup](#device-setup) below
-2. **Start reading** - Open any book in the web interface or on your device
-3. **Turn pages** - Progress syncs automatically
-4. **Switch devices** - Pick up any other device - your progress is there!
-
----
-
-## Device Setup
-
-For detailed device configuration instructions, see the appropriate setup guide:
-
-- **[KOReader Setup Guide](devices/koreader-setup.md)** - KOReader configuration (Kindle, Kobo, and PocketBook hardware)
-- **[Kobo Setup Guide](devices/kobo-setup.md)** - Native Kobo sync (coming soon; use KOReader today)
-
-### Quick Overview
-
-**Registration Process** (KOReader):
-
-1. Install the Bookhoard plugin and enter your server URL in KOReader
-2. Approve the pending registration on the Bookhoard **Devices** page (sidebar navigation)
-3. That's it — sync starts automatically once approved
-
-**Device Management**:
-
-```
-Devices page (sidebar navigation)
-```
-
-You can:
-
-- View all your registered devices
-- See last sync time and status
-- Disable or remove devices
-- View unlinked books that need matching
-- Manage file aliases
-
----
-
-## Book Matching
-
-### What is Book Matching?
-
-When devices sync books, Bookhoard tries to automatically match them using:
-
-- **SHA-256 hash** (most reliable) - Content-based fingerprint
-- **ISBN** - Standard book identifier
-- **UUID** - Unique identifier from EPUB metadata
-- **Title + Author** (fallback) - Last resort matching
-
-### Unlinked Books
-
-Sometimes a book on your device can't be automatically matched to your library. This happens when:
-
-- The book was side-loaded (not downloaded via Bookhoard)
-- The file format was converted (EPUB → KEPUB)
-- The metadata doesn't match exactly
-
-### Viewing Unlinked Books
-
-```
-Devices page → select device → unlinked books
-```
-
-### Resolving Unlinked Books
-
-1. **Auto-Link** - Automatically link books with 80%+ confidence
-2. **Get Suggestions** - Review potential matches before linking
-3. **Manual Link** - Choose the correct match yourself
-
-### Book Matching Priority
-
-1. **Bookhoard UUID** - 100% confidence
-2. **OPF UUID** - 95% confidence
-3. **SHA-256 hash** - 90% confidence
-4. **OPF identifier** - 85% confidence
-5. **ISBN/ASIN** - 80% confidence
-6. **Title + Author + File Size** - 50% confidence
-
----
-
-## Managing Conflicts
-
-### Reading Progress
-
-**What Syncs**:
-
-- Current page number
-- Reading percentage
-- Chapter progress
-- EPUB CFI (for EPUB files)
-- Last read timestamp
-- Reading position (viewport, zoom, scroll)
-
-**How It Works**:
-
-```
-You turn page → Device sends progress → Server updates database
-                                    ↓
-                            Broadcasts to all your devices
-                                    ↓
-                    Other devices update their display
-```
-
-**Supported Progress Types**:
-
-- **EPUB/MOBI**: Percentage + EPUB CFI + Chapter
-- **PDF/DJVU**: Page number + Viewport position
-- **CBZ/CBR**: Page number + Panel coordinates
-
-### Highlights & Notes
-
-**What Syncs**:
-
-- Highlighted text
-- Notes and annotations
-- Bookmark locations
-- Colors and formatting
-- Chapter/paragraph references
-
-**Universal Location References**:
-All highlights are stored with multiple location types:
-
-- Page:offset (traditional)
-- EPUB CFI (EPUB files)
-- Percentage (0-100%)
-- Character offset (exact position)
-- Chapter references
-
-This ensures your highlights work across all devices, even with different page counts!
-
-### Bookmarks
-
-**What Syncs**:
-
-- Bookmark locations
-- Bookmark titles
-- Date created
-- Reading position context
-
----
-
-## Sync Modes
-
-### Immediate Mode (Default)
-
-**Best For**: Normal reading, page turns
-
-**Behavior**:
-
-- Syncs every page turn
-- Real-time updates
-- Low latency
-- Higher bandwidth usage
-
-**Recommended Settings**:
-
-- Auto-sync: ON
-- Sync frequency: Every page turn
-
-### Checkpoint Mode
-
-**Best For**: Slow connections, battery saving
-
-**Behavior**:
-
-- Batches changes
-- Syncs every 5 minutes or when connection allows
-- Lower bandwidth
-- Better for offline reading
-
-**Recommended Settings**:
-
-- Auto-sync: ON
-- Sync frequency: Checkpoint mode
-
----
-
-## Offline Support
-
-### How Offline Sync Works
-
-1. **Offline Reading**:
-   - Read normally without connection
-   - All progress tracked locally
-
-2. **Queue Changes**:
-   - Progress changes queued automatically
-   - Annotations saved locally
-   - Up to 100 items in offline queue
-
-3. **Reconnection**:
-   - Connect to Wi-Fi
-   - Queue processes automatically
-   - Priority items first (book completion, notes)
-   - All devices updated
-
-### Offline Indicators
-
-**In Web Interface**:
-
-- Yellow status icon: Device offline
-- Last seen timestamp
-- "Pending sync" badge on books
-
-**On Devices**:
-
-- Sync icon: Gray = offline
-- Sync icon: Blue = syncing
-- Sync icon: Green = synced
-
----
+Every reading session is logged — when, how long, on which device — and
+feeds your [dashboard](dashboard.md) and stats. Your history is visible on
+the **Progress** page and on each book's detail page, and it is yours
+alone.
 
 ## Troubleshooting
 
-### Sync Not Working
+**Progress not updating**
+Check the device is still on the **Devices** page and was approved; check
+the server URL in the device's settings; confirm the device can reach the
+server (open the server URL in the device's browser as a test).
 
-**Symptoms**: Progress not updating across devices
+**"Device not found"**
+The device was removed or its token revoked — register it again and
+approve it.
 
-**Solutions**:
+**A conflict keeps coming back**
+Two devices are genuinely fighting over the same book. Decide which device
+is the reader for that book, resolve with a strategy above, and avoid
+simultaneous reading of the same title.
 
-1. Check device is online: Devices page (sidebar navigation)
-2. Verify sync is enabled for the device
-3. Check sync URL is correct
-4. Ensure device has network connection
-5. Try manual sync: Open book → Menu → Sync Now
+**High battery or data use**
+That is the cost of continuous sync on a chatty device; e-reader plugins
+let you space out their sync checks from the plugin's own settings.
 
-### "Device Not Found" Error
+## Device limits
 
-**Cause**: Device not registered or authorization revoked
-
-**Solutions**:
-
-1. Re-register the device
-2. Check device hasn't been removed
-3. Verify correct device type selected
-
-### "Rate Limit Exceeded" Error
-
-**Cause**: Too many sync requests
-
-**Solutions**:
-
-1. Wait a few seconds
-2. Switch to checkpoint mode
-3. Contact admin to increase limits
-
-### Conflicts Detected
-
-**Symptoms**: "Sync conflict" notification
-
-**Cause**: Same book being read on multiple devices simultaneously
-
-**Solutions**:
-
-1. Open the book's detail page and click **Sync Progress**, or go to the Conflicts page (`/conflicts`)
-2. Review both device progress
-3. Choose which device's progress to keep
-4. Or choose "Merge" (keeps furthest progress)
-
-### High Battery Usage
-
-**Cause**: Immediate sync mode with frequent page turns
-
-**Solutions**:
-
-1. Switch to checkpoint mode
-2. Increase sync interval
-3. Sync less frequently
+Each account has a device limit — **10 by default**, and administrators can
+raise or lower it per user. Removing a device you no longer use frees a
+slot.
 
 ---
 
-## Best Practices
-
-### For Optimal Performance
-
-✅ **DO**:
-
-- Use checkpoint mode when on slow connections
-- Keep device firmware updated
-- Use Wi-Fi when available
-- Approve only devices you own
-- Regularly check conflict resolution
-
-❌ **DON'T**:
-
-- Read same book on multiple devices simultaneously
-- Ignore conflict notifications
-- Register public/shared devices
-- Exceed device limits (max 10 per user)
-
-### Organizing Your Library
-
-**For Best Sync Experience**:
-
-- Use consistent metadata (titles, authors)
-- Avoid duplicate books in library
-- Match files by ISBN when possible
-- Use clean file structure
-
-### Managing Multiple Devices
-
-**Recommended Setup**:
-
-- **Primary Device**: KOReader on e-reader
-- **Secondary Device**: Web browser (work/home)
-- **On the go**: Web browser on a phone (dedicated mobile apps coming later)
-
-**Sync Strategy**:
-
-1. Read mainly on primary device
-2. Check progress on web/secondary devices
-3. Let auto-sync handle updates
-4. Resolve conflicts promptly
-
----
-
-## Advanced Features
-
-### Conflict Resolution
-
-**Automatic Resolution**:
-
-- Most recent progress wins
-- Timestamp-based comparison
-- 5-minute window for conflict detection
-
-**Manual Resolution**:
-
-```
-Book detail → Sync Progress → choose winner
-```
-
-**Options**:
-
-- **Keep Device A**: Use this device's progress
-- **Keep Device B**: Use other device's progress
-- **Merge**: Keep furthest progress (combination)
-- **Auto-Resolve Future**: Always prefer this device
-
-### Sync Queue Management
-
-**View Queue Status**:
-
-```
-Devices page → sync queue section
-```
-
-**Queue Stats**:
-
-- Pending: Waiting to sync
-- Processing: Currently syncing
-- Failed: Retry scheduled
-- Completed: Successfully synced
-
-**Manual Actions**:
-
-- **Retry All**: Retry all failed items
-- **Clear Queue**: Remove all pending items
-- **Priority Sync**: Sync specific book immediately
-
-### Reading History
-
-**Automatic Tracking**:
-
-- Every sync session logged
-- Time spent reading calculated
-- Pages read tracked
-- Device used recorded
-
-**View History**:
-
-```
-Progress page (sidebar navigation), or the book's detail page
-```
-
-**Privacy**:
-
-- Only you can see your history
-- History kept for 365 days
-- Exportable for backup
-
----
-
-## Security & Privacy
-
-### Device Authentication
-
-**Secure by Design**:
-
-- ✅ No passwords stored on devices
-- ✅ Web-based approval required
-- ✅ Unique tokens per device
-- ✅ Revocable at any time
-- ✅ Token encryption in transit
-
-### Data Protection
-
-**What We Store**:
-
-- Reading progress (page, percentage)
-- Highlights and notes
-- Device identifiers
-- Sync timestamps
-
-**What We DON'T Store**:
-
-- Passwords on devices
-- Reading content (your books)
-- Unencrypted personal data
-- Location data (GPS)
-
-### Access Control
-
-**Your Data**:
-
-- Only you can see your progress
-- Admins cannot read your annotations
-- Shared only with devices you approve
-
-**Device Access**:
-
-- Each device sees only your libraries
-- Devices cannot access other users
-- Revoking removes all access
-
----
-
-## Performance Tips
-
-### For Faster Sync
-
-1. **Use 5GHz Wi-Fi** - Faster than 2.4GHz
-2. **Keep server nearby** - Low latency = better sync
-3. **Regular updates** - Keeps firmware current
-4. **Checkpoint mode** - For batch processing
-
-### For Better Battery Life
-
-1. **Checkpoint mode** - Fewer sync requests
-2. **Increase sync interval** - Fewer updates
-3. **Close when not reading** - Reduces background activity
-
----
-
-## FAQ
-
-### General Questions
-
-**Q: Does sync work with all book formats?**
-A: Yes! EPUB, PDF, MOBI, CBZ, CBR and more.
-
-**Q: Can multiple users share a device?**
-A: No, devices are tied to individual accounts for security.
-
-**Q: What happens if I delete a book?**
-A: All sync data for that book is removed from the server.
-
-**Q: Can I export my reading data?**
-A: Reading data isn't exportable from the UI yet — it's accessible via the API.
-
-**Q: Does sync work over the internet?**
-A: Yes, if your server is publicly accessible with HTTPS.
-
-**Q: How much data does sync use?**
-A: Approximately 1KB per page turn, 50KB per annotation.
-
-### Technical Questions
-
-**Q: How does sync handle different page counts?**
-A: Uses percentage and EPUB CFI for universal positioning.
-
-**Q: Can I sync with Calibre anymore?**
-A: Bookhoard's KOReader sync uses a dedicated plugin (server-side approval, device tokens) — no Calibre involvement required.
-
-**Q: What if I lose my device?**
-A: Revoke it in settings and register a new one.
-
-**Q: Is sync end-to-end encrypted?**
-A: Yes, HTTPS/TLS 1.3 for all sync traffic.
-
----
-
-## Getting Help
-
-### Documentation
-
-- **API Docs**: `/docs/api.md`
-- **Device Guides**: `/docs/devices/`
-- **Self-Hosting**: `/docs/install.md`
-
-### Support
-
-- **Issues**: Report bugs at GitHub Issues
-- **Discussions**: Join GitHub Discussions
-- **Email**: support@bookhoard.example.com
-
-### Community
-
-- **Forum**: community.bookhoard.example.com
-- **Matrix**: #bookhoard:matrix.org
-- **Discord**: discord.gg/bookhoard
-
----
-
-## Changelog
-
-### Version 1.0.x (2026)
-
-- ✅ Web sync support
-- ✅ KOReader sync (progress, bookmarks, highlights, notes)
-- ✅ Conflict resolution
-- ✅ Offline queue
-- ✅ Real-time WebSocket sync
-- 🚧 Native Kobo sync (coming soon)
-- 🚧 Mobile apps (coming later)
-
----
-
-**Last Updated**: August 2026  
-**Version**: 1.0  
-**License**: AGPL-3.0
+More detail on any device lives in its guide:
+[Android](devices/android-app.md) ·
+[KOReader](devices/koreader-setup.md) ·
+[Kobo](devices/kobo-setup.md) ·
+[Calibre import](calibre-integration.md) ·
+and the [filter rules](filters/index.md) that power matching-adjacent
+shelves like [smart collections](collections.md).

docs/user/themes.md

@@ -34,7 +34,7 @@ full set of [Omarchy](https://omarchy.org) defaults alongside the classics:
 
 **Light**
 
-- **Lupine** - Clean light with violet-blue accents (default light theme)
+- **Lupine** - Clean light with violet-blue accents
 - **Tokyo Night Day** - Daylight counterpart of the default
 - **Solarized Light** - Precision contrast on warm paper
 - **One Light** - Atom's light theme
@@ -52,11 +52,17 @@ full set of [Omarchy](https://omarchy.org) defaults alongside the classics:
 
 1. In the sidebar, open the **Appearance** panel (palette icon, near the bottom)
 2. Use the **Dark / Light** switch at the top to show the half you want —
-   it opens on the half your current theme lives in
+   it opens on the half your current theme lives in, and each side shows
+   how many themes it holds. The switch only filters the list; it never
+   changes your theme by itself
 3. Pick a theme from the list — each option shows its color swatch, and your
    active theme is marked with a checkmark
 4. Your choice is saved automatically and synced across devices
 
+There is exactly one default: **Tokyo Night** on a fresh install. Nothing
+else is pre-selected for you — pick whichever theme you like from either
+half.
+
 On small screens, open the sidebar with the menu button in the top bar first.
 
 ## Wood Paneling

docs/user/user-areas.md

@@ -1,15 +0,0 @@
-# User Areas Guide
-
-**Coming Soon**
-
-This guide will cover:
-
-- Managing your personal library
-- Uploading and organizing books
-- Creating and managing collections
-- Syncing across devices
-- Personal settings
-
----
-
-_In the meantime, check out our [Sync Guide](sync-guide.md)_

docs/user/user-guide.md

@@ -1,79 +1,47 @@
-# User Documentation
+# Bookhoard — start here
 
-Welcome to the Bookhoard user documentation. This section contains guides for using Bookhoard features, setting up devices, and configuring sync.
+Bookhoard is a self-hosted home for the things you read and hear: your book
+libraries live on your own server, you read them in the browser or on your
+devices, and everything keeps track of where you are.
 
-## 📱 Device Setup
+The moving parts, in one breath:
 
-Learn how to configure your e-reader devices to sync with Bookhoard:
+- **Libraries** hold your books (and your podcasts run as feeds of their own)
+- The **dashboard** is your home screen — shelves that update themselves
+- **Collections** are shelves you build, by hand or by rules
+- **Filters** answer "which books match?" — the same rules power saved
+  filters, smart collections, and dashboard shelves
+- **Devices** — the Android app, KOReader on e-readers, and stock Kobo
+  firmware — stay in step with the server through **sync**
+- Your **profile** holds your preferences: theme, playback defaults, password
 
-- **[Android App Guide](devices/android-app.md)** - The native Android client
-  - Installing and upgrading the APK
-  - Connecting to a self-hosted server over LAN
-  - The Android 16+ local-network permission
-  - Troubleshooting login failures
+## Where to go
 
-- **[KOReader Setup Guide](devices/koreader-setup.md)** - Complete guide for KOReader
-  - Installation on Kindle/Kobo/PocketBook
-  - Plugin setup with server-side device approval
-  - Progress, bookmark, highlight, and note sync
-  - OPDS catalog access
-  - Troubleshooting
+| You want to... | Read |
+| --- | --- |
+| Learn the layout: dashboard, shelves, customizing | [Dashboard](dashboard.md) |
+| Browse, search, and sort your books | [Browsing your library](library-browsing.md) |
+| Build shelves — by hand or with rules | [Collections](collections.md) |
+| Narrow with rules, save them, reuse them | [Filters — the complete guide](filters/index.md) |
+| Subscribe to shows, download, listen | [Podcasts](podcasts.md) |
+| Read and annotate in the browser | [Web Reader Guide](reader-guide.md) |
+| Change themes and bookshelf textures | [Themes and Wood Paneling](themes.md) |
+| Edit your account, password, playback defaults | [Your profile](profile-guide.md) |
+| Get the Android app talking to your server | [Android App](devices/android-app.md) |
+| Use KOReader on an e-reader | [KOReader Setup](devices/koreader-setup.md) |
+| Use a Kobo | [Kobo Setup](devices/kobo-setup.md) |
+| Understand how it all stays in sync | [Universal Sync Guide](sync-guide.md) |
+| Import from Calibre | [Calibre Integration](calibre-integration.md) |
 
-- **[Kobo Setup Guide](devices/kobo-setup.md)** - Native Kobo sync (coming soon)
-  - In the meantime, KOReader works great on Kobo hardware
+New here? The usual path is: browse [your library](library-browsing.md),
+open a book, and let the [dashboard](dashboard.md) keep track of you. Sync
+comes when you add a [device](devices/android-app.md).
 
-## 🔄 Sync Configuration
+## A note on admins
 
-- **[Universal Sync Guide](sync-guide.md)** - Understanding and using sync features
-  - What is Universal Sync?
-  - Supported devices
-  - Book matching and auto-linking
-  - Conflict resolution
-  - Best practices
+Some screens (user management, server settings, library folders) are admin
+territory; [Admin Guide](admin-guide.md) is the door, and the admin docs are
+being expanded separately.
 
-## 📚 Calibre Integration
-
-- **[Calibre Integration Guide](calibre-integration.md)** - Integrating with Calibre libraries
-  - What is Calibre?
-  - Automatic metadata import
-  - Setting up your Calibre library
-  - Supported metadata and file types
-  - Workflow examples
-  - Troubleshooting
-  - Best practices
-
-## 📖 Reading
-
-- **[Web Reader Guide](reader-guide.md)** - Reading and annotating in the browser
-  - Touch navigation (swipe to page, tap for menu)
-  - Selecting text: long-press, drag, handles
-  - Highlights, notes, copy, and editing
-  - PDFs and comics
-
-## 🎨 Frontend Guide
-
-**[Frontend Guide](frontend-guide.md)** - Learn how to use the Bookhoard web interface
-
-- _Coming Soon_
-
-## 👤 User Areas
-
-**[User Areas Guide](user-areas.md)** - Managing your personal library and settings
-
-- _Coming Soon_
-
-## ⚙️ Settings
-
-**[Settings Guide](settings-guide.md)** - Configuring your Bookhoard preferences
-
-- _Coming Soon_
-
-## 🔐 Admin Features
-
-**[Admin Guide](admin-guide.md)** - Administrative functions and management
-
-- _Coming Soon_
-
----
-
-**Looking for developer documentation?** See the [Developer Portal](../developer/development.md)
+**Looking for developer documentation?** See the
+[Developer Portal](../developer/development.md).

internal/database/models.go

@@ -34,7 +34,7 @@ type Collections struct {
 	Description        pgtype.Text        `db:"description" json:"description"`
 	Color              pgtype.Text        `db:"color" json:"color"`
 	Icon               pgtype.Text        `db:"icon" json:"icon"`
-	AutoAssignRules    []byte             `db:"auto_assign_rules" json:"auto_assign_rules"`
+	FilterTree         []byte             `db:"filter_tree" json:"filter_tree"`
 	ViewSettings       []byte             `db:"view_settings" json:"view_settings"`
 	ShowOnDashboard    pgtype.Bool        `db:"show_on_dashboard" json:"show_on_dashboard"`
 	QueryType          pgtype.Text        `db:"query_type" json:"query_type"`
@@ -654,4 +654,5 @@ type Users struct {
 	UpdatedAt                pgtype.Timestamptz `db:"updated_at" json:"updated_at"`
 	DefaultAudioSpeed        float32            `db:"default_audio_speed" json:"default_audio_speed"`
 	KeepScreenAwake          bool               `db:"keep_screen_awake" json:"keep_screen_awake"`
+	AudioResumeRewindSeconds int32              `db:"audio_resume_rewind_seconds" json:"audio_resume_rewind_seconds"`
 }

internal/database/querier.go

@@ -262,11 +262,25 @@ type Querier interface {
 	// rename can't spawn duplicates on the next scan.
 	GetCollectionByImportedSeries(ctx context.Context, arg GetCollectionByImportedSeriesParams) (Collections, error)
 	GetCollectionByUserAndName(ctx context.Context, arg GetCollectionByUserAndNameParams) (Collections, error)
+	// The collection queue's downloaded episodes in collection order
+	// (plan item 2.3 "Play collection as sequence"): position-first, then
+	// added_at. INNER JOIN — the chain steps only through episodes the
+	// requester can see (RLS drops unsubscribed feeds) and that are
+	// downloaded (invariant 6: un-downloaded episodes are never tracked).
+	GetCollectionEpisodesOrdered(ctx context.Context, collectionID pgtype.UUID) ([]GetCollectionEpisodesOrderedRow, error)
 	// Get collection items
 	// A2c: position-first ordering (playlist reading order); un-positioned
 	// legacy items keep added_at ASC after the positioned tail — NOT DESC,
 	// which walked a playlist backwards.
 	GetCollectionItems(ctx context.Context, collectionID pgtype.UUID) ([]GetCollectionItemsRow, error)
+	// Episode-collections detail (plan item 2.3): the collection's full
+	// membership for the SSR detail page, with per-row visibility. LEFT
+	// JOIN + RLS: rows whose media is invisible to the requester
+	// (unsubscribed episode — or a family-lens hidden book) survive with
+	// NULL media columns and visible=false, so the page can render an
+	// "unavailable" hint instead of silently vanishing them. Rows visible
+	// but archived/missing-scan keep the old INNER-JOIN behavior (dropped).
+	GetCollectionItemsDetailed(ctx context.Context, collectionID pgtype.UUID) ([]GetCollectionItemsDetailedRow, error)
 	// The excluded filter lives here (was: callers filtered ci.excluded in
 	// Go over a 69-field row + a 45-field converter to MediaItems; embed
 	// returns the real row so neither exists).
@@ -585,12 +599,6 @@ type Querier interface {
 	GetUserSettingByKey(ctx context.Context, arg GetUserSettingByKeyParams) ([]byte, error)
 	GetUserVisibleLibraries(ctx context.Context, userID pgtype.UUID) ([]GetUserVisibleLibrariesRow, error)
 	GetVisibleLibraryMediaCounts(ctx context.Context, userID pgtype.UUID) ([]GetVisibleLibraryMediaCountsRow, error)
-	// Smart ("dynamic") collections: rules are evaluated LIVE at render, so
-	// membership comes from the candidate book set instead of collection_items.
-	// The set is scoped to the requesting user's visible libraries (family
-	// lens enforced at the source) and live items only — the same filters the
-	// static collection paths apply.
-	GetVisibleLiveMediaForRules(ctx context.Context, arg GetVisibleLiveMediaForRulesParams) ([]MediaItems, error)
 	HasRecentConflictResolution(ctx context.Context, arg HasRecentConflictResolutionParams) (bool, error)
 	// Soft-dismiss one row (ownership is checked by the caller against the
 	// device's user_id before calling this).
@@ -762,6 +770,14 @@ type Querier interface {
 	RevokeOpdsToken(ctx context.Context, token string) error
 	RevokeRefreshToken(ctx context.Context, token pgtype.UUID) error
 	SearchAuthorValues(ctx context.Context, arg SearchAuthorValuesParams) ([]SearchAuthorValuesRow, error)
+	// Episode picker scope (plan item 2.3): YOUR subscriptions' episodes.
+	// The podcasts exclusion in SearchMediaItemsUnified stays (books
+	// surfaces never list podcasts — plan §9); THIS query is the episode
+	// picker's dedicated scope. Visibility is the engine's job (D20): the
+	// media_items policy drops episodes from unsubscribed feeds and the
+	// podcast_feeds join is governed the same way — non-subscribers see
+	// nothing here without any Go-side clause.
+	SearchEpisodesForPicker(ctx context.Context, q_ string) ([]SearchEpisodesForPickerRow, error)
 	SearchGenreValues(ctx context.Context, arg SearchGenreValuesParams) ([]SearchGenreValuesRow, error)
 	SearchLanguageValues(ctx context.Context, arg SearchLanguageValuesParams) ([]SearchLanguageValuesRow, error)
 	// Search Media Items queries
@@ -804,11 +820,12 @@ type Querier interface {
 	UnignoreUnlinkedBook(ctx context.Context, id pgtype.UUID) error
 	// Update collection
 	UpdateCollection(ctx context.Context, arg UpdateCollectionParams) (Collections, error)
-	// Replace ONLY the auto_assign_rules document (rule CRUD: read-modify-write
-	// of the JSONB without touching metadata stale clients did not send).
-	UpdateCollectionRulesJSON(ctx context.Context, arg UpdateCollectionRulesJSONParams) (Collections, error)
 	// A2c §2.4: provenance + playlist flags on an existing collection without
 	// touching the rest of the row.
+	// (Historical bug, fixed 2026-10-30: this wrote `updated_at = NOW()` but
+	// collections has no updated_at column — the scanner's series-import
+	// call has been failing silently, its error discarded. Fixed by
+	// dropping the phantom column write.)
 	UpdateCollectionViewSettings(ctx context.Context, arg UpdateCollectionViewSettingsParams) error
 	UpdateDashboardPreferences(ctx context.Context, arg UpdateDashboardPreferencesParams) (UserDashboardPreferences, error)
 	UpdateDevice(ctx context.Context, arg UpdateDeviceParams) (Devices, error)
@@ -877,6 +894,7 @@ type Querier interface {
 	UpdateSystemSetting(ctx context.Context, arg UpdateSystemSettingParams) error
 	// Update universal progress
 	UpdateUniversalProgress(ctx context.Context, arg UpdateUniversalProgressParams) (ReadingProgress, error)
+	UpdateUserAudioResumeRewind(ctx context.Context, arg UpdateUserAudioResumeRewindParams) error
 	UpdateUserDefaultAudioSpeed(ctx context.Context, arg UpdateUserDefaultAudioSpeedParams) error
 	UpdateUserKeepScreenAwake(ctx context.Context, arg UpdateUserKeepScreenAwakeParams) error
 	UpdateUserMaxDevices(ctx context.Context, arg UpdateUserMaxDevicesParams) (Users, error)

internal/database/queries.sql.go

@@ -671,9 +671,9 @@ func (q *Queries) CreateAutoResolvedSyncConflict(ctx context.Context, arg Create
 
 const CreateCollection = `-- name: CreateCollection :one
 
-INSERT INTO collections (user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard)
+INSERT INTO collections (user_id, name, description, color, icon, view_settings, show_on_dashboard, filter_tree)
 VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
-RETURNING id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
+RETURNING id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
 `
 
 type CreateCollectionParams struct {
@@ -682,9 +682,9 @@ type CreateCollectionParams struct {
 	Description     pgtype.Text `db:"description" json:"description"`
 	Color           pgtype.Text `db:"color" json:"color"`
 	Icon            pgtype.Text `db:"icon" json:"icon"`
-	AutoAssignRules []byte      `db:"auto_assign_rules" json:"auto_assign_rules"`
 	ViewSettings    []byte      `db:"view_settings" json:"view_settings"`
 	ShowOnDashboard pgtype.Bool `db:"show_on_dashboard" json:"show_on_dashboard"`
+	FilterTree      []byte      `db:"filter_tree" json:"filter_tree"`
 }
 
 // COLLECTIONS QUERIES
@@ -696,9 +696,9 @@ func (q *Queries) CreateCollection(ctx context.Context, arg CreateCollectionPara
 		arg.Description,
 		arg.Color,
 		arg.Icon,
-		arg.AutoAssignRules,
 		arg.ViewSettings,
 		arg.ShowOnDashboard,
+		arg.FilterTree,
 	)
 	var i Collections
 	err := row.Scan(
@@ -708,7 +708,7 @@ func (q *Queries) CreateCollection(ctx context.Context, arg CreateCollectionPara
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -2250,9 +2250,9 @@ func (q *Queries) CreateSyncQueueItem(ctx context.Context, arg CreateSyncQueueIt
 }
 
 const CreateSystemCollection = `-- name: CreateSystemCollection :one
-INSERT INTO collections (user_id, name, description, icon, color, show_on_dashboard, query_type, priority, is_system_collection, auto_assign_rules)
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true, 'null'::jsonb)
-RETURNING id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
+INSERT INTO collections (user_id, name, description, icon, color, show_on_dashboard, query_type, priority, is_system_collection)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true)
+RETURNING id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
 `
 
 type CreateSystemCollectionParams struct {
@@ -2285,7 +2285,7 @@ func (q *Queries) CreateSystemCollection(ctx context.Context, arg CreateSystemCo
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -4383,7 +4383,7 @@ func (q *Queries) GetBooksByTag(ctx context.Context, arg GetBooksByTagParams) ([
 }
 
 const GetCollection = `-- name: GetCollection :one
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections WHERE id = $1
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections WHERE id = $1
 `
 
 // Get collection
@@ -4397,7 +4397,7 @@ func (q *Queries) GetCollection(ctx context.Context, id pgtype.UUID) (Collection
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -4410,7 +4410,7 @@ func (q *Queries) GetCollection(ctx context.Context, id pgtype.UUID) (Collection
 }
 
 const GetCollectionByImportedSeries = `-- name: GetCollectionByImportedSeries :one
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
 WHERE user_id = $1
   AND view_settings->>'imported_from_series' = $2::text
   AND deleted_at IS NULL
@@ -4435,7 +4435,7 @@ func (q *Queries) GetCollectionByImportedSeries(ctx context.Context, arg GetColl
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -4448,7 +4448,7 @@ func (q *Queries) GetCollectionByImportedSeries(ctx context.Context, arg GetColl
 }
 
 const GetCollectionByUserAndName = `-- name: GetCollectionByUserAndName :one
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
 WHERE user_id = $1 AND name = $2 AND deleted_at IS NULL
 LIMIT 1
 `
@@ -4468,7 +4468,7 @@ func (q *Queries) GetCollectionByUserAndName(ctx context.Context, arg GetCollect
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -4480,6 +4480,55 @@ func (q *Queries) GetCollectionByUserAndName(ctx context.Context, arg GetCollect
 	return i, err
 }
 
+const GetCollectionEpisodesOrdered = `-- name: GetCollectionEpisodesOrdered :many
+SELECT mi.id, mi.title, mi.feed_position, mi.date_published
+FROM collection_items ci
+JOIN media_items mi ON ci.media_item_id = mi.id
+WHERE ci.collection_id = $1
+  AND mi.source = 'podcast_episode'
+  AND mi.download_state = 'downloaded'
+  AND mi.archived_at IS NULL
+  AND mi.missing_scan_count = 0
+ORDER BY ci.position ASC NULLS LAST, ci.added_at ASC
+`
+
+type GetCollectionEpisodesOrderedRow struct {
+	ID            pgtype.UUID `db:"id" json:"id"`
+	Title         string      `db:"title" json:"title"`
+	FeedPosition  pgtype.Int4 `db:"feed_position" json:"feed_position"`
+	DatePublished pgtype.Date `db:"date_published" json:"date_published"`
+}
+
+// The collection queue's downloaded episodes in collection order
+// (plan item 2.3 "Play collection as sequence"): position-first, then
+// added_at. INNER JOIN — the chain steps only through episodes the
+// requester can see (RLS drops unsubscribed feeds) and that are
+// downloaded (invariant 6: un-downloaded episodes are never tracked).
+func (q *Queries) GetCollectionEpisodesOrdered(ctx context.Context, collectionID pgtype.UUID) ([]GetCollectionEpisodesOrderedRow, error) {
+	rows, err := q.db.Query(ctx, GetCollectionEpisodesOrdered, collectionID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []GetCollectionEpisodesOrderedRow{}
+	for rows.Next() {
+		var i GetCollectionEpisodesOrderedRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.Title,
+			&i.FeedPosition,
+			&i.DatePublished,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const GetCollectionItems = `-- name: GetCollectionItems :many
 SELECT ci.id, ci.collection_id, ci.media_item_id, ci.added_at, ci.added_by_user_id, ci.excluded, ci.position, mi.title, mi.author, mi.cover_image_path, mi.library_id, mi.format_group
 FROM collection_items ci
@@ -4542,6 +4591,73 @@ func (q *Queries) GetCollectionItems(ctx context.Context, collectionID pgtype.UU
 	return items, nil
 }
 
+const GetCollectionItemsDetailed = `-- name: GetCollectionItemsDetailed :many
+SELECT ci.media_item_id, ci.position, ci.added_at,
+       (mi.id IS NOT NULL)::bool AS visible,
+       mi.title, mi.author, mi.cover_image_path, mi.format_group,
+       mi.source, mi.download_state,
+       pf.title AS feed_title
+FROM collection_items ci
+LEFT JOIN media_items mi ON ci.media_item_id = mi.id
+LEFT JOIN podcast_feeds pf ON mi.source_feed_id = pf.id
+WHERE ci.collection_id = $1
+  AND (mi.id IS NULL OR (mi.archived_at IS NULL AND mi.missing_scan_count = 0))
+ORDER BY ci.position ASC NULLS LAST, ci.added_at ASC
+`
+
+type GetCollectionItemsDetailedRow struct {
+	MediaItemID    pgtype.UUID        `db:"media_item_id" json:"media_item_id"`
+	Position       pgtype.Int4        `db:"position" json:"position"`
+	AddedAt        pgtype.Timestamptz `db:"added_at" json:"added_at"`
+	Visible        bool               `db:"visible" json:"visible"`
+	Title          pgtype.Text        `db:"title" json:"title"`
+	Author         pgtype.Text        `db:"author" json:"author"`
+	CoverImagePath pgtype.Text        `db:"cover_image_path" json:"cover_image_path"`
+	FormatGroup    pgtype.Text        `db:"format_group" json:"format_group"`
+	Source         pgtype.Text        `db:"source" json:"source"`
+	DownloadState  pgtype.Text        `db:"download_state" json:"download_state"`
+	FeedTitle      pgtype.Text        `db:"feed_title" json:"feed_title"`
+}
+
+// Episode-collections detail (plan item 2.3): the collection's full
+// membership for the SSR detail page, with per-row visibility. LEFT
+// JOIN + RLS: rows whose media is invisible to the requester
+// (unsubscribed episode — or a family-lens hidden book) survive with
+// NULL media columns and visible=false, so the page can render an
+// "unavailable" hint instead of silently vanishing them. Rows visible
+// but archived/missing-scan keep the old INNER-JOIN behavior (dropped).
+func (q *Queries) GetCollectionItemsDetailed(ctx context.Context, collectionID pgtype.UUID) ([]GetCollectionItemsDetailedRow, error) {
+	rows, err := q.db.Query(ctx, GetCollectionItemsDetailed, collectionID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []GetCollectionItemsDetailedRow{}
+	for rows.Next() {
+		var i GetCollectionItemsDetailedRow
+		if err := rows.Scan(
+			&i.MediaItemID,
+			&i.Position,
+			&i.AddedAt,
+			&i.Visible,
+			&i.Title,
+			&i.Author,
+			&i.CoverImagePath,
+			&i.FormatGroup,
+			&i.Source,
+			&i.DownloadState,
+			&i.FeedTitle,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const GetCollectionItemsForDashboard = `-- name: GetCollectionItemsForDashboard :many
 SELECT mi.id, mi.library_id, mi.title, mi.subtitle, mi.author, mi.isbn, mi.description, mi.file_path, mi.file_size, mi.mime_type, mi.cover_image_path, mi.series, mi.series_number, mi.tags, mi.narrators, mi.authors, mi.authors_search, mi.publishers, mi.publishers_search, mi.abridged, mi.explicit, mi.asin, mi.date_published, mi.publisher, mi.contributors, mi.language, mi.edition, mi.page_count, mi.genre, mi.copyright_year, mi.goodreads_id, mi.openlibrary_id, mi.google_books_id, mi.added_by_admin_id, mi.created_at, mi.imported_at, mi.updated_at, mi.format_group, mi.format_mimetype, mi.is_reflowable, mi.has_fixed_layout, mi.total_characters, mi.chapter_count, mi.entitlement_id, mi.revision_number, mi.kobo_content_id, mi.kobo_metadata, mi.manga_type, mi.reading_direction, mi.series_count, mi.volume, mi.imprint, mi.age_rating, mi.web_url, mi.story_arc, mi.is_black_and_white, mi.metadata_notes, mi.community_rating, mi.alternate_info, mi.scan_information, mi.summary, mi.metadata_overrides, mi.missing_scan_count, mi.archived_at, mi.chapter_metadata, mi.library_type_name, mi.audio_metadata, mi.tags_search, mi.contributors_search, mi.narrators_search, mi.file_sha256, mi.opf_identifier, mi.opf_uuid, mi.hash_confidence, mi.source, mi.source_feed_id, mi.episode_guid, mi.feed_position, mi.season_number, mi.episode_number, mi.enclosure_url, mi.declared_duration_seconds, mi.transcript_url, mi.chapters_url, mi.hosts, mi.guests, mi.download_state, mi.download_error, mi.download_attempts, mi.download_queue_pos, rp.percentage AS viewer_percentage FROM media_items mi
 INNER JOIN collection_items ci ON ci.media_item_id = mi.id
@@ -4845,7 +4961,7 @@ func (q *Queries) GetCollectionUpNext(ctx context.Context, arg GetCollectionUpNe
 
 const GetCollectionWithBookCount = `-- name: GetCollectionWithBookCount :one
 SELECT
-    c.id, c.user_id, c.name, c.description, c.color, c.icon, c.auto_assign_rules, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at,
+    c.id, c.user_id, c.name, c.description, c.color, c.icon, c.filter_tree, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at,
     COUNT(ci.id) as book_count
 FROM collections c
 LEFT JOIN collection_items ci ON c.id = ci.collection_id
@@ -4860,7 +4976,7 @@ type GetCollectionWithBookCountRow struct {
 	Description        pgtype.Text        `db:"description" json:"description"`
 	Color              pgtype.Text        `db:"color" json:"color"`
 	Icon               pgtype.Text        `db:"icon" json:"icon"`
-	AutoAssignRules    []byte             `db:"auto_assign_rules" json:"auto_assign_rules"`
+	FilterTree         []byte             `db:"filter_tree" json:"filter_tree"`
 	ViewSettings       []byte             `db:"view_settings" json:"view_settings"`
 	ShowOnDashboard    pgtype.Bool        `db:"show_on_dashboard" json:"show_on_dashboard"`
 	QueryType          pgtype.Text        `db:"query_type" json:"query_type"`
@@ -4882,7 +4998,7 @@ func (q *Queries) GetCollectionWithBookCount(ctx context.Context, id pgtype.UUID
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -4896,7 +5012,7 @@ func (q *Queries) GetCollectionWithBookCount(ctx context.Context, id pgtype.UUID
 }
 
 const GetCollectionsByUser = `-- name: GetCollectionsByUser :many
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections WHERE user_id = $1 AND deleted_at IS NULL ORDER BY created_at DESC
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections WHERE user_id = $1 AND deleted_at IS NULL ORDER BY created_at DESC
 `
 
 // Get collections by user
@@ -4916,7 +5032,7 @@ func (q *Queries) GetCollectionsByUser(ctx context.Context, userID pgtype.UUID)
 			&i.Description,
 			&i.Color,
 			&i.Icon,
-			&i.AutoAssignRules,
+			&i.FilterTree,
 			&i.ViewSettings,
 			&i.ShowOnDashboard,
 			&i.QueryType,
@@ -4936,7 +5052,7 @@ func (q *Queries) GetCollectionsByUser(ctx context.Context, userID pgtype.UUID)
 }
 
 const GetCollectionsForBook = `-- name: GetCollectionsForBook :many
-SELECT c.id, c.user_id, c.name, c.description, c.color, c.icon, c.auto_assign_rules, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at
+SELECT c.id, c.user_id, c.name, c.description, c.color, c.icon, c.filter_tree, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at
 FROM collections c
 JOIN collection_items ci ON c.id = ci.collection_id
 WHERE ci.media_item_id = $1
@@ -4960,7 +5076,7 @@ func (q *Queries) GetCollectionsForBook(ctx context.Context, mediaItemID pgtype.
 			&i.Description,
 			&i.Color,
 			&i.Icon,
-			&i.AutoAssignRules,
+			&i.FilterTree,
 			&i.ViewSettings,
 			&i.ShowOnDashboard,
 			&i.QueryType,
@@ -10665,7 +10781,7 @@ func (q *Queries) GetSyncQueueStats(ctx context.Context, deviceID pgtype.UUID) (
 
 const GetSystemCollectionByQueryType = `-- name: GetSystemCollectionByQueryType :one
 
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
 WHERE user_id = $1
   AND query_type = $2
   AND is_system_collection = true
@@ -10691,7 +10807,7 @@ func (q *Queries) GetSystemCollectionByQueryType(ctx context.Context, arg GetSys
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -10704,7 +10820,7 @@ func (q *Queries) GetSystemCollectionByQueryType(ctx context.Context, arg GetSys
 }
 
 const GetSystemCollectionsForDashboard = `-- name: GetSystemCollectionsForDashboard :many
-SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
+SELECT id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at FROM collections
 WHERE user_id = $1
   AND is_system_collection = true
   AND show_on_dashboard = true
@@ -10729,7 +10845,7 @@ func (q *Queries) GetSystemCollectionsForDashboard(ctx context.Context, userID p
 			&i.Description,
 			&i.Color,
 			&i.Icon,
-			&i.AutoAssignRules,
+			&i.FilterTree,
 			&i.ViewSettings,
 			&i.ShowOnDashboard,
 			&i.QueryType,
@@ -11291,6 +11407,7 @@ SELECT
     u.timezone,
     u.default_audio_speed,
     u.keep_screen_awake,
+    u.audio_resume_rewind_seconds,
     (SELECT COUNT(*) FROM devices WHERE user_id = u.id) as device_count
 FROM users u
 WHERE u.id = $1
@@ -11310,6 +11427,7 @@ type GetUserRow struct {
 	Timezone                 pgtype.Text        `db:"timezone" json:"timezone"`
 	DefaultAudioSpeed        float32            `db:"default_audio_speed" json:"default_audio_speed"`
 	KeepScreenAwake          bool               `db:"keep_screen_awake" json:"keep_screen_awake"`
+	AudioResumeRewindSeconds int32              `db:"audio_resume_rewind_seconds" json:"audio_resume_rewind_seconds"`
 	DeviceCount              int64              `db:"device_count" json:"device_count"`
 }
 
@@ -11330,6 +11448,7 @@ func (q *Queries) GetUser(ctx context.Context, id pgtype.UUID) (GetUserRow, erro
 		&i.Timezone,
 		&i.DefaultAudioSpeed,
 		&i.KeepScreenAwake,
+		&i.AudioResumeRewindSeconds,
 		&i.DeviceCount,
 	)
 	return i, err
@@ -11435,7 +11554,7 @@ func (q *Queries) GetUserByUsername(ctx context.Context, username string) (GetUs
 }
 
 const GetUserCollectionsForDashboard = `-- name: GetUserCollectionsForDashboard :many
-SELECT c.id, c.user_id, c.name, c.description, c.color, c.icon, c.auto_assign_rules, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at FROM collections c
+SELECT c.id, c.user_id, c.name, c.description, c.color, c.icon, c.filter_tree, c.view_settings, c.show_on_dashboard, c.query_type, c.priority, c.is_system_collection, c.created_at, c.deleted_at FROM collections c
 WHERE c.user_id = $1
   AND c.is_system_collection = false
   AND c.deleted_at IS NULL
@@ -11462,7 +11581,7 @@ func (q *Queries) GetUserCollectionsForDashboard(ctx context.Context, userID pgt
 			&i.Description,
 			&i.Color,
 			&i.Icon,
-			&i.AutoAssignRules,
+			&i.FilterTree,
 			&i.ViewSettings,
 			&i.ShowOnDashboard,
 			&i.QueryType,
@@ -12222,136 +12341,6 @@ func (q *Queries) GetVisibleLibraryMediaCounts(ctx context.Context, userID pgtyp
 	return items, nil
 }
 
-const GetVisibleLiveMediaForRules = `-- name: GetVisibleLiveMediaForRules :many
-SELECT mi.id, mi.library_id, mi.title, mi.subtitle, mi.author, mi.isbn, mi.description, mi.file_path, mi.file_size, mi.mime_type, mi.cover_image_path, mi.series, mi.series_number, mi.tags, mi.narrators, mi.authors, mi.authors_search, mi.publishers, mi.publishers_search, mi.abridged, mi.explicit, mi.asin, mi.date_published, mi.publisher, mi.contributors, mi.language, mi.edition, mi.page_count, mi.genre, mi.copyright_year, mi.goodreads_id, mi.openlibrary_id, mi.google_books_id, mi.added_by_admin_id, mi.created_at, mi.imported_at, mi.updated_at, mi.format_group, mi.format_mimetype, mi.is_reflowable, mi.has_fixed_layout, mi.total_characters, mi.chapter_count, mi.entitlement_id, mi.revision_number, mi.kobo_content_id, mi.kobo_metadata, mi.manga_type, mi.reading_direction, mi.series_count, mi.volume, mi.imprint, mi.age_rating, mi.web_url, mi.story_arc, mi.is_black_and_white, mi.metadata_notes, mi.community_rating, mi.alternate_info, mi.scan_information, mi.summary, mi.metadata_overrides, mi.missing_scan_count, mi.archived_at, mi.chapter_metadata, mi.library_type_name, mi.audio_metadata, mi.tags_search, mi.contributors_search, mi.narrators_search, mi.file_sha256, mi.opf_identifier, mi.opf_uuid, mi.hash_confidence, mi.source, mi.source_feed_id, mi.episode_guid, mi.feed_position, mi.season_number, mi.episode_number, mi.enclosure_url, mi.declared_duration_seconds, mi.transcript_url, mi.chapters_url, mi.hosts, mi.guests, mi.download_state, mi.download_error, mi.download_attempts, mi.download_queue_pos FROM media_items mi
-WHERE ($1::uuid IS NULL OR mi.library_id = $1::uuid)
-  AND ($2::uuid[] IS NULL OR mi.library_id = ANY($2::uuid[]))
-  AND mi.archived_at IS NULL
-  AND mi.missing_scan_count = 0
-ORDER BY mi.title ASC
-`
-
-type GetVisibleLiveMediaForRulesParams struct {
-	LibraryID         pgtype.UUID   `db:"library_id" json:"library_id"`
-	VisibleLibraryIds []pgtype.UUID `db:"visible_library_ids" json:"visible_library_ids"`
-}
-
-// Smart ("dynamic") collections: rules are evaluated LIVE at render, so
-// membership comes from the candidate book set instead of collection_items.
-// The set is scoped to the requesting user's visible libraries (family
-// lens enforced at the source) and live items only — the same filters the
-// static collection paths apply.
-func (q *Queries) GetVisibleLiveMediaForRules(ctx context.Context, arg GetVisibleLiveMediaForRulesParams) ([]MediaItems, error) {
-	rows, err := q.db.Query(ctx, GetVisibleLiveMediaForRules, arg.LibraryID, arg.VisibleLibraryIds)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	items := []MediaItems{}
-	for rows.Next() {
-		var i MediaItems
-		if err := rows.Scan(
-			&i.ID,
-			&i.LibraryID,
-			&i.Title,
-			&i.Subtitle,
-			&i.Author,
-			&i.Isbn,
-			&i.Description,
-			&i.FilePath,
-			&i.FileSize,
-			&i.MimeType,
-			&i.CoverImagePath,
-			&i.Series,
-			&i.SeriesNumber,
-			&i.Tags,
-			&i.Narrators,
-			&i.Authors,
-			&i.AuthorsSearch,
-			&i.Publishers,
-			&i.PublishersSearch,
-			&i.Abridged,
-			&i.Explicit,
-			&i.Asin,
-			&i.DatePublished,
-			&i.Publisher,
-			&i.Contributors,
-			&i.Language,
-			&i.Edition,
-			&i.PageCount,
-			&i.Genre,
-			&i.CopyrightYear,
-			&i.GoodreadsID,
-			&i.OpenlibraryID,
-			&i.GoogleBooksID,
-			&i.AddedByAdminID,
-			&i.CreatedAt,
-			&i.ImportedAt,
-			&i.UpdatedAt,
-			&i.FormatGroup,
-			&i.FormatMimetype,
-			&i.IsReflowable,
-			&i.HasFixedLayout,
-			&i.TotalCharacters,
-			&i.ChapterCount,
-			&i.EntitlementID,
-			&i.RevisionNumber,
-			&i.KoboContentID,
-			&i.KoboMetadata,
-			&i.MangaType,
-			&i.ReadingDirection,
-			&i.SeriesCount,
-			&i.Volume,
-			&i.Imprint,
-			&i.AgeRating,
-			&i.WebUrl,
-			&i.StoryArc,
-			&i.IsBlackAndWhite,
-			&i.MetadataNotes,
-			&i.CommunityRating,
-			&i.AlternateInfo,
-			&i.ScanInformation,
-			&i.Summary,
-			&i.MetadataOverrides,
-			&i.MissingScanCount,
-			&i.ArchivedAt,
-			&i.ChapterMetadata,
-			&i.LibraryTypeName,
-			&i.AudioMetadata,
-			&i.TagsSearch,
-			&i.ContributorsSearch,
-			&i.NarratorsSearch,
-			&i.FileSha256,
-			&i.OpfIdentifier,
-			&i.OpfUuid,
-			&i.HashConfidence,
-			&i.Source,
-			&i.SourceFeedID,
-			&i.EpisodeGuid,
-			&i.FeedPosition,
-			&i.SeasonNumber,
-			&i.EpisodeNumber,
-			&i.EnclosureUrl,
-			&i.DeclaredDurationSeconds,
-			&i.TranscriptUrl,
-			&i.ChaptersUrl,
-			&i.Hosts,
-			&i.Guests,
-			&i.DownloadState,
-			&i.DownloadError,
-			&i.DownloadAttempts,
-			&i.DownloadQueuePos,
-		); err != nil {
-			return nil, err
-		}
-		items = append(items, i)
-	}
-	if err := rows.Err(); err != nil {
-		return nil, err
-	}
-	return items, nil
-}
-
 const HasRecentConflictResolution = `-- name: HasRecentConflictResolution :one
 SELECT EXISTS(
     SELECT 1 FROM sync_conflicts
@@ -16332,7 +16321,7 @@ SET name = $2,
     show_on_dashboard = true,
     deleted_at = NULL
 WHERE id = $1
-RETURNING id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
+RETURNING id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
 `
 
 type RestoreSystemCollectionRowParams struct {
@@ -16363,7 +16352,7 @@ func (q *Queries) RestoreSystemCollectionRow(ctx context.Context, arg RestoreSys
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -16478,6 +16467,67 @@ func (q *Queries) SearchAuthorValues(ctx context.Context, arg SearchAuthorValues
 	return items, nil
 }
 
+const SearchEpisodesForPicker = `-- name: SearchEpisodesForPicker :many
+SELECT mi.id, mi.title, mi.author, mi.cover_image_path, mi.library_id,
+       mi.format_group, mi.download_state,
+       pf.title AS feed_title
+FROM media_items mi
+JOIN podcast_feeds pf ON mi.source_feed_id = pf.id
+WHERE mi.source = 'podcast_episode'
+  AND mi.archived_at IS NULL
+  AND mi.missing_scan_count = 0
+  AND ($1::text = '' OR mi.title ILIKE '%' || $1::text || '%')
+ORDER BY pf.title ASC, mi.feed_position ASC NULLS LAST
+LIMIT 60
+`
+
+type SearchEpisodesForPickerRow struct {
+	ID             pgtype.UUID `db:"id" json:"id"`
+	Title          string      `db:"title" json:"title"`
+	Author         pgtype.Text `db:"author" json:"author"`
+	CoverImagePath pgtype.Text `db:"cover_image_path" json:"cover_image_path"`
+	LibraryID      pgtype.UUID `db:"library_id" json:"library_id"`
+	FormatGroup    string      `db:"format_group" json:"format_group"`
+	DownloadState  string      `db:"download_state" json:"download_state"`
+	FeedTitle      string      `db:"feed_title" json:"feed_title"`
+}
+
+// Episode picker scope (plan item 2.3): YOUR subscriptions' episodes.
+// The podcasts exclusion in SearchMediaItemsUnified stays (books
+// surfaces never list podcasts — plan §9); THIS query is the episode
+// picker's dedicated scope. Visibility is the engine's job (D20): the
+// media_items policy drops episodes from unsubscribed feeds and the
+// podcast_feeds join is governed the same way — non-subscribers see
+// nothing here without any Go-side clause.
+func (q *Queries) SearchEpisodesForPicker(ctx context.Context, q_ string) ([]SearchEpisodesForPickerRow, error) {
+	rows, err := q.db.Query(ctx, SearchEpisodesForPicker, q_)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []SearchEpisodesForPickerRow{}
+	for rows.Next() {
+		var i SearchEpisodesForPickerRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.Title,
+			&i.Author,
+			&i.CoverImagePath,
+			&i.LibraryID,
+			&i.FormatGroup,
+			&i.DownloadState,
+			&i.FeedTitle,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const SearchGenreValues = `-- name: SearchGenreValues :many
 SELECT
   mi.genre as value,
@@ -18015,10 +18065,10 @@ SET
     description = $3,
     color = $4,
     icon = $5,
-    auto_assign_rules = $6,
-    view_settings = $7
+    view_settings = $6,
+    filter_tree = $7
 WHERE id = $1
-RETURNING id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
+RETURNING id, user_id, name, description, color, icon, filter_tree, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
 `
 
 type UpdateCollectionParams struct {
@@ -18027,8 +18077,8 @@ type UpdateCollectionParams struct {
 	Description  pgtype.Text `db:"description" json:"description"`
 	Color        pgtype.Text `db:"color" json:"color"`
 	Icon         pgtype.Text `db:"icon" json:"icon"`
-	AutoAssignRules []byte      `db:"auto_assign_rules" json:"auto_assign_rules"`
 	ViewSettings []byte      `db:"view_settings" json:"view_settings"`
+	FilterTree   []byte      `db:"filter_tree" json:"filter_tree"`
 }
 
 // Update collection
@@ -18039,8 +18089,8 @@ func (q *Queries) UpdateCollection(ctx context.Context, arg UpdateCollectionPara
 		arg.Description,
 		arg.Color,
 		arg.Icon,
-		arg.AutoAssignRules,
 		arg.ViewSettings,
+		arg.FilterTree,
 	)
 	var i Collections
 	err := row.Scan(
@@ -18050,40 +18100,7 @@ func (q *Queries) UpdateCollection(ctx context.Context, arg UpdateCollectionPara
 		&i.Description,
 		&i.Color,
 		&i.Icon,
-		&i.AutoAssignRules,
-		&i.ViewSettings,
-		&i.ShowOnDashboard,
-		&i.QueryType,
-		&i.Priority,
-		&i.IsSystemCollection,
-		&i.CreatedAt,
-		&i.DeletedAt,
-	)
-	return i, err
-}
-
-const UpdateCollectionRulesJSON = `-- name: UpdateCollectionRulesJSON :one
-UPDATE collections SET auto_assign_rules = $2 WHERE id = $1 RETURNING id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at, deleted_at
-`
-
-type UpdateCollectionRulesJSONParams struct {
-	ID              pgtype.UUID `db:"id" json:"id"`
-	AutoAssignRules []byte      `db:"auto_assign_rules" json:"auto_assign_rules"`
-}
-
-// Replace ONLY the auto_assign_rules document (rule CRUD: read-modify-write
-// of the JSONB without touching metadata stale clients did not send).
-func (q *Queries) UpdateCollectionRulesJSON(ctx context.Context, arg UpdateCollectionRulesJSONParams) (Collections, error) {
-	row := q.db.QueryRow(ctx, UpdateCollectionRulesJSON, arg.ID, arg.AutoAssignRules)
-	var i Collections
-	err := row.Scan(
-		&i.ID,
-		&i.UserID,
-		&i.Name,
-		&i.Description,
-		&i.Color,
-		&i.Icon,
-		&i.AutoAssignRules,
+		&i.FilterTree,
 		&i.ViewSettings,
 		&i.ShowOnDashboard,
 		&i.QueryType,
@@ -18096,7 +18113,7 @@ func (q *Queries) UpdateCollectionRulesJSON(ctx context.Context, arg UpdateColle
 }
 
 const UpdateCollectionViewSettings = `-- name: UpdateCollectionViewSettings :exec
-UPDATE collections SET view_settings = $2, updated_at = NOW() WHERE id = $1
+UPDATE collections SET view_settings = $2 WHERE id = $1
 `
 
 type UpdateCollectionViewSettingsParams struct {
@@ -18106,6 +18123,10 @@ type UpdateCollectionViewSettingsParams struct {
 
 // A2c §2.4: provenance + playlist flags on an existing collection without
 // touching the rest of the row.
+// (Historical bug, fixed 2026-10-30: this wrote `updated_at = NOW()` but
+// collections has no updated_at column — the scanner's series-import
+// call has been failing silently, its error discarded. Fixed by
+// dropping the phantom column write.)
 func (q *Queries) UpdateCollectionViewSettings(ctx context.Context, arg UpdateCollectionViewSettingsParams) error {
 	_, err := q.db.Exec(ctx, UpdateCollectionViewSettings, arg.ID, arg.ViewSettings)
 	return err
@@ -20269,6 +20290,20 @@ func (q *Queries) UpdateUniversalProgress(ctx context.Context, arg UpdateUnivers
 	return i, err
 }
 
+const UpdateUserAudioResumeRewind = `-- name: UpdateUserAudioResumeRewind :exec
+UPDATE users SET audio_resume_rewind_seconds = $2, updated_at = NOW() WHERE id = $1
+`
+
+type UpdateUserAudioResumeRewindParams struct {
+	ID                       pgtype.UUID `db:"id" json:"id"`
+	AudioResumeRewindSeconds int32       `db:"audio_resume_rewind_seconds" json:"audio_resume_rewind_seconds"`
+}
+
+func (q *Queries) UpdateUserAudioResumeRewind(ctx context.Context, arg UpdateUserAudioResumeRewindParams) error {
+	_, err := q.db.Exec(ctx, UpdateUserAudioResumeRewind, arg.ID, arg.AudioResumeRewindSeconds)
+	return err
+}
+
 const UpdateUserDefaultAudioSpeed = `-- name: UpdateUserDefaultAudioSpeed :exec
 UPDATE users SET default_audio_speed = $2, updated_at = NOW() WHERE id = $1
 `
@@ -20299,7 +20334,7 @@ func (q *Queries) UpdateUserKeepScreenAwake(ctx context.Context, arg UpdateUserK
 
 const UpdateUserMaxDevices = `-- name: UpdateUserMaxDevices :one
 UPDATE users SET max_devices = $2, updated_at = NOW() WHERE id = $1
-RETURNING id, email, username, password_hash, first_name, last_name, role, theme, max_devices, created_at, timezone, updated_at, default_audio_speed, keep_screen_awake
+RETURNING id, email, username, password_hash, first_name, last_name, role, theme, max_devices, created_at, timezone, updated_at, default_audio_speed, keep_screen_awake, audio_resume_rewind_seconds
 `
 
 type UpdateUserMaxDevicesParams struct {
@@ -20325,6 +20360,7 @@ func (q *Queries) UpdateUserMaxDevices(ctx context.Context, arg UpdateUserMaxDev
 		&i.UpdatedAt,
 		&i.DefaultAudioSpeed,
 		&i.KeepScreenAwake,
+		&i.AudioResumeRewindSeconds,
 	)
 	return i, err
 }

internal/database/queries/queries.sql

@@ -30,6 +30,7 @@ SELECT
     u.timezone,
     u.default_audio_speed,
     u.keep_screen_awake,
+    u.audio_resume_rewind_seconds,
     (SELECT COUNT(*) FROM devices WHERE user_id = u.id) as device_count
 FROM users u
 WHERE u.id = $1;
@@ -526,6 +527,9 @@ UPDATE users SET default_audio_speed = $2, updated_at = NOW() WHERE id = $1;
 -- name: UpdateUserKeepScreenAwake :exec
 UPDATE users SET keep_screen_awake = $2, updated_at = NOW() WHERE id = $1;
 
+-- name: UpdateUserAudioResumeRewind :exec
+UPDATE users SET audio_resume_rewind_seconds = $2, updated_at = NOW() WHERE id = $1;
+
 -- Per-book playback speed preference (player plan §8).
 
 -- name: GetAudioPlaybackSpeed :one
@@ -932,6 +936,26 @@ ORDER BY
   mi.title ASC
 LIMIT sqlc.narg('limit') OFFSET sqlc.narg('offset');
 
+-- name: SearchEpisodesForPicker :many
+-- Episode picker scope (plan item 2.3): YOUR subscriptions' episodes.
+-- The podcasts exclusion in SearchMediaItemsUnified stays (books
+-- surfaces never list podcasts — plan §9); THIS query is the episode
+-- picker's dedicated scope. Visibility is the engine's job (D20): the
+-- media_items policy drops episodes from unsubscribed feeds and the
+-- podcast_feeds join is governed the same way — non-subscribers see
+-- nothing here without any Go-side clause.
+SELECT mi.id, mi.title, mi.author, mi.cover_image_path, mi.library_id,
+       mi.format_group, mi.download_state,
+       pf.title AS feed_title
+FROM media_items mi
+JOIN podcast_feeds pf ON mi.source_feed_id = pf.id
+WHERE mi.source = 'podcast_episode'
+  AND mi.archived_at IS NULL
+  AND mi.missing_scan_count = 0
+  AND (sqlc.arg('q')::text = '' OR mi.title ILIKE '%' || sqlc.arg('q')::text || '%')
+ORDER BY pf.title ASC, mi.feed_position ASC NULLS LAST
+LIMIT 60;
+
 -- name: SearchAuthorValues :many
 SELECT
   mi.author as value,
@@ -3469,14 +3493,18 @@ DELETE FROM device_file_aliases WHERE id = $1;
 
 -- Create collection
 -- name: CreateCollection :one
-INSERT INTO collections (user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard)
+INSERT INTO collections (user_id, name, description, color, icon, view_settings, show_on_dashboard, filter_tree)
 VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
 RETURNING *;
 
 -- A2c §2.4: provenance + playlist flags on an existing collection without
 -- touching the rest of the row.
 -- name: UpdateCollectionViewSettings :exec
-UPDATE collections SET view_settings = $2, updated_at = NOW() WHERE id = $1;
+-- (Historical bug, fixed 2026-10-30: this wrote `updated_at = NOW()` but
+-- collections has no updated_at column — the scanner's series-import
+-- call has been failing silently, its error discarded. Fixed by
+-- dropping the phantom column write.)
+UPDATE collections SET view_settings = $2 WHERE id = $1;
 
 -- Get collection
 -- name: GetCollection :one
@@ -3504,16 +3532,11 @@ SET
     description = $3,
     color = $4,
     icon = $5,
-    auto_assign_rules = $6,
-    view_settings = $7
+    view_settings = $6,
+    filter_tree = $7
 WHERE id = $1
 RETURNING *;
 
--- Replace ONLY the auto_assign_rules document (rule CRUD: read-modify-write
--- of the JSONB without touching metadata stale clients did not send).
--- name: UpdateCollectionRulesJSON :one
-UPDATE collections SET auto_assign_rules = $2 WHERE id = $1 RETURNING *;
-
 -- Delete collection
 -- name: DeleteCollection :exec
 DELETE FROM collections WHERE id = $1;
@@ -3576,6 +3599,42 @@ WHERE ci.collection_id = $1
   AND mi.missing_scan_count = 0
 ORDER BY ci.position ASC NULLS LAST, ci.added_at ASC;
 
+-- name: GetCollectionItemsDetailed :many
+-- Episode-collections detail (plan item 2.3): the collection's full
+-- membership for the SSR detail page, with per-row visibility. LEFT
+-- JOIN + RLS: rows whose media is invisible to the requester
+-- (unsubscribed episode — or a family-lens hidden book) survive with
+-- NULL media columns and visible=false, so the page can render an
+-- "unavailable" hint instead of silently vanishing them. Rows visible
+-- but archived/missing-scan keep the old INNER-JOIN behavior (dropped).
+SELECT ci.media_item_id, ci.position, ci.added_at,
+       (mi.id IS NOT NULL)::bool AS visible,
+       mi.title, mi.author, mi.cover_image_path, mi.format_group,
+       mi.source, mi.download_state,
+       pf.title AS feed_title
+FROM collection_items ci
+LEFT JOIN media_items mi ON ci.media_item_id = mi.id
+LEFT JOIN podcast_feeds pf ON mi.source_feed_id = pf.id
+WHERE ci.collection_id = $1
+  AND (mi.id IS NULL OR (mi.archived_at IS NULL AND mi.missing_scan_count = 0))
+ORDER BY ci.position ASC NULLS LAST, ci.added_at ASC;
+
+-- name: GetCollectionEpisodesOrdered :many
+-- The collection queue's downloaded episodes in collection order
+-- (plan item 2.3 "Play collection as sequence"): position-first, then
+-- added_at. INNER JOIN — the chain steps only through episodes the
+-- requester can see (RLS drops unsubscribed feeds) and that are
+-- downloaded (invariant 6: un-downloaded episodes are never tracked).
+SELECT mi.id, mi.title, mi.feed_position, mi.date_published
+FROM collection_items ci
+JOIN media_items mi ON ci.media_item_id = mi.id
+WHERE ci.collection_id = $1
+  AND mi.source = 'podcast_episode'
+  AND mi.download_state = 'downloaded'
+  AND mi.archived_at IS NULL
+  AND mi.missing_scan_count = 0
+ORDER BY ci.position ASC NULLS LAST, ci.added_at ASC;
+
 -- Get collections for book
 -- name: GetCollectionsForBook :many
 SELECT c.*
@@ -3967,8 +4026,8 @@ RETURNING *;
 DELETE FROM collection_items WHERE collection_id = $1;
 
 -- name: CreateSystemCollection :one
-INSERT INTO collections (user_id, name, description, icon, color, show_on_dashboard, query_type, priority, is_system_collection, auto_assign_rules)
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true, 'null'::jsonb)
+INSERT INTO collections (user_id, name, description, icon, color, show_on_dashboard, query_type, priority, is_system_collection)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true)
 RETURNING *;
 
 -- name: ResetSystemCollectionMetadata :exec
@@ -4084,19 +4143,6 @@ LIMIT sqlc.narg('limit');
 -- name: CountCollectionItems :one
 SELECT COUNT(*) FROM collection_items WHERE collection_id = $1;
 
--- Smart ("dynamic") collections: rules are evaluated LIVE at render, so
--- membership comes from the candidate book set instead of collection_items.
--- The set is scoped to the requesting user's visible libraries (family
--- lens enforced at the source) and live items only — the same filters the
--- static collection paths apply.
--- name: GetVisibleLiveMediaForRules :many
-SELECT mi.* FROM media_items mi
-WHERE (sqlc.narg('library_id')::uuid IS NULL OR mi.library_id = sqlc.narg('library_id')::uuid)
-  AND (sqlc.narg('visible_library_ids')::uuid[] IS NULL OR mi.library_id = ANY(sqlc.narg('visible_library_ids')::uuid[]))
-  AND mi.archived_at IS NULL
-  AND mi.missing_scan_count = 0
-ORDER BY mi.title ASC;
-
 -- Live item count for a STATIC collection (rule-free cards on the
 -- collections page); same live filter as GetCollectionItems, plus the
 -- future-hybrid excluded exclusion and an optional library scope.

internal/docs/handler.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/fs"
 	"os"
+	"path/filepath"
 	"strings"
 
 	"bookhoard/templates"
@@ -24,7 +25,23 @@ type DocsHandler struct {
 	docsFS   fs.FS
 }
 
+// resolveDocsPath — the docs folder lives at the repo root, but `go test`
+// runs test binaries from the PACKAGE directory (/cmd/server/tests), so a
+// plain relative "docs" resolves to a folder that doesn't exist there and
+// every /docs route 404s in tests (2026-11-01). Walk upward, bounded,
+// until the folder is real; prod (/app) matches on the first try.
+func resolveDocsPath(p string) string {
+	for i := 0; i < 6; i++ {
+		if fi, err := os.Stat(filepath.Join(p, "index.md")); err == nil && !fi.IsDir() {
+			return p
+		}
+		p = filepath.Join("..", p)
+	}
+	return "docs"
+}
+
 func NewDocsHandler(docsPath string) *DocsHandler {
+	docsPath = resolveDocsPath(docsPath)
 	// Create goldmark renderer with syntax highlighting
 	md := goldmark.New(
 		goldmark.WithExtensions(
@@ -74,11 +91,24 @@ func (h *DocsHandler) LoadDocument(docPath string) (*templates.Document, error)
 		}
 	}
 
-	// Read the markdown file
+	// Read the markdown file. Folder URLs resolve to their index page:
+	// /docs/user/filters → user/filters/index.md (2026-11-01 — the
+	// filter manual is a folder: guide + cookbook + generated field
+	// reference).
 	content, err := fs.ReadFile(h.docsFS, docPath)
 	if err != nil {
+		if !strings.HasSuffix(docPath, "index.md") {
+			alt := strings.TrimSuffix(docPath, ".md") + "/index.md"
+			if altContent, altErr := fs.ReadFile(h.docsFS, alt); altErr == nil {
+				docPath = alt
+				content = altContent
+			} else {
 				return nil, fmt.Errorf("failed to read document: %w", err)
 			}
+		} else {
+			return nil, fmt.Errorf("failed to read document: %w", err)
+		}
+	}
 
 	// Convert markdown to HTML
 	var buf bytes.Buffer

internal/docs/links_test.go

@@ -8,40 +8,55 @@ import (
 	"testing"
 )
 
-// TestDocsRelativeLinks keeps the developer docs tree internally navigable:
-// every relative markdown link must point at a file that exists. The
-// api-reference overview once shipped 20+ directory-style links
-// (authentication/ etc.) that 404'd — this gate makes that class of rot
-// fail make test. (docs/user is excluded: end-user prose has its own pass.)
+// TestDocsRelativeLinks keeps every doc tree internally navigable: every
+// relative markdown link must point at a file that exists. The api-reference
+// overview once shipped 20+ directory-style links (authentication/ etc.)
+// that 404'd — this gate makes that class of rot fail make test.
 //
 // Rules:
 //   - http(s):, mailto:, and pure #anchors are skipped
 //   - every other target must end in .md and resolve (relative to the
-//     linking file) to an existing file inside the tree
+//     linking file) to an existing file inside the docs tree
 //   - directory-style targets ("area/") are the exact bug this test exists
 //     for and always fail
+//
+// Hands-off sources (project owner instruction, 2026-11-02: DO NOT EDIT THE
+// FILTER DOCS): docs/user/filters/** and docs/user/searching-and-filtering.md
+// are not scanned as link sources, so no future gate failure can force an
+// edit there. Files linking INTO them are still checked — resolution needs
+// file existence only, never edits to their content.
+
 var docsLinkRe = regexp.MustCompile(`\[[^\]]*\]\(([^)\s]+)\)`)
 
-func TestDocsRelativeLinks(t *testing.T) {
-	// Walk developer docs; escape-check against the whole docs tree —
-	// cross-area links into docs/user are legitimate (same site).
-	devRoot, err := filepath.Abs("../../docs/developer")
-	if err != nil {
-		t.Fatalf("abs developer root: %v", err)
+var handsOffFilterDocs = []string{
+	"user/filters/",
+	"user/searching-and-filtering.md",
 }
+
+func TestDocsRelativeLinks(t *testing.T) {
 	treeRoot, err := filepath.Abs("../../docs")
 	if err != nil {
 		t.Fatalf("abs docs root: %v", err)
 	}
-	err = filepath.WalkDir(devRoot, func(path string, d os.DirEntry, err error) error {
+	err = filepath.WalkDir(treeRoot, func(path string, d os.DirEntry, err error) error {
 		if err != nil || d.IsDir() || !strings.HasSuffix(path, ".md") {
 			return err
 		}
+		rel, err := filepath.Rel(treeRoot, path)
+		if err != nil {
+			return err
+		}
+		relSlash := filepath.ToSlash(rel)
+		for _, off := range handsOffFilterDocs {
+			if strings.HasPrefix(relSlash, off) {
+				return nil
+			}
+		}
+
 		raw, err := os.ReadFile(path)
 		if err != nil {
 			return err
 		}
-		rel, _ := filepath.Rel(docsRoot, path)
 		absPath, err := filepath.Abs(path)
 		if err != nil {
 			return err

internal/docs/navigation.go

@@ -321,10 +321,23 @@ func (h *DocsHandler) BuildNavigation(currentPath string) *templates.Navigation
 	return nav
 }
 
-// containsURL reports whether currentPath is one of the given doc URLs.
+// normalizeDocURL — folder-index pages SERVE at their directory URL
+// (/docs/user/filters) while their nav entry carries the /index suffix
+// (/docs/user/filters/index): same page, two spellings. Both sidebar
+// checks (expansion + highlight) compare normalized forms, so folder
+// pages expand and highlight like file pages — no per-page special
+// cases (2026-11-01, the filter manual's folder).
+func normalizeDocURL(u string) string {
+	u = strings.TrimRight(u, "/")
+	return strings.TrimSuffix(u, "/index")
+}
+
+// containsURL reports whether currentPath is one of the given doc URLs
+// (folder-index URLs normalized — see normalizeDocURL).
 func containsURL(currentPath string, urls []string) bool {
+	current := normalizeDocURL(currentPath)
 	for _, u := range urls {
-		if currentPath == u {
+		if current == normalizeDocURL(u) {
 			return true
 		}
 	}

internal/docs/navigation_test.go

@@ -4,6 +4,8 @@ import (
 	"os"
 	"path/filepath"
 	"testing"
+
+	"bookhoard/templates"
 )
 
 func TestPlaceDoc(t *testing.T) {
@@ -205,3 +207,41 @@ func TestBuildNavigationNothingCurrent(t *testing.T) {
 		t.Errorf("expected zero sections open when nothing matches (docs home / 404 renders fully closed), got %d", open)
 	}
 }
+
+// TestBuildNavigationFolderIndex (2026-11-01): folder-index pages serve
+// at their directory URL (/docs/user/filters) while their nav entries
+// carry /index (/docs/user/filters/index) — the sidebar must EXPAND the
+// containing section/group and HIGHLIGHT the index item for the folder
+// URL, exactly like a file page. The filter manual's folder is the
+// first page of this shape.
+func TestBuildNavigationFolderIndex(t *testing.T) {
+	// The REAL docs tree: the Filters group only exists because the
+	// filter manual (guide/cookbook/fields) lives in user/filters/.
+	handler := NewDocsHandler("../../docs")
+	nav := handler.BuildNavigation("/docs/user/filters")
+
+	var userGuide *templates.NavSection
+	for i := range nav.Sections {
+		if nav.Sections[i].Title == "User Guide" {
+			userGuide = &nav.Sections[i]
+		}
+	}
+	if userGuide == nil {
+		t.Fatal("User Guide section missing")
+	}
+	if userGuide.Collapsed {
+		t.Error("User Guide section must expand for /docs/user/filters")
+	}
+	var filters *templates.NavGroup
+	for i := range userGuide.Groups {
+		if userGuide.Groups[i].Title == "Filters" {
+			filters = &userGuide.Groups[i]
+		}
+	}
+	if filters == nil {
+		t.Fatal("Filters group missing from User Guide")
+	}
+	if filters.Collapsed {
+		t.Error("Filters group must expand for its folder URL")
+	}
+}

internal/docs/schema.go

@@ -49,7 +49,7 @@ var Schemas = map[string]Schema{
 		Response: json.RawMessage(`{
 			"id": "", "user_id": "", "name": "", "description": "",
 			"color": "", "icon": "", "collection_type": "",
-			"auto_assign_rules": null, "view_settings": {},
+			"view_settings": {},
 			"book_count": 0, "created_at": ""
 		}`),
 	},
@@ -62,7 +62,7 @@ var Schemas = map[string]Schema{
 	"GET /api/collections/:id": {
 		Response: json.RawMessage(`{
 			"id": "", "user_id": "", "name": "", "description": "",
-			"color": "", "icon": "", "auto_assign_rules": null,
+			"color": "", "icon": "",
 			"view_settings": {}, "books": [], "book_count": 0,
 			"is_smart": false, "up_next": [], "created_at": ""
 		}`),
@@ -71,7 +71,7 @@ var Schemas = map[string]Schema{
 		Request: handlers.UpdateCollectionRequest{},
 		Response: json.RawMessage(`{
 			"id": "", "user_id": "", "name": "", "description": "",
-			"color": "", "icon": "", "auto_assign_rules": null,
+			"color": "", "icon": "",
 			"view_settings": {}, "created_at": ""
 		}`),
 	},
@@ -601,15 +601,14 @@ var Schemas = map[string]Schema{
 		Request:  json.RawMessage(`{"item_ids": []}`),
 		Response: json.RawMessage(`{"status": "reordered"}`),
 	},
-	"PUT /api/collections/:id/rules/:ruleId": {
-		// Handler is SetRuleEnabled: toggle only, request {enabled required},
-		// response {collection_id, is_smart}.
-		Request: json.RawMessage(`{"enabled": false}`),
+	"PUT /api/collections/:id/view-settings": {
+		// Merges chain_order into the collection's view_settings JSONB
+		// (playlist toggles share the doc and are preserved).
+		Request: json.RawMessage(`{"chain_order": "newest"}`),
 		Response: json.RawMessage(`{
-			"collection_id": "", "is_smart": false
+			"id": "", "chain_order": "", "view_settings": {}
 		}`),
 	},
-
 	// --- Beam batch 7: scanner ---
 	"POST /api/scanner/scan": {
 		Request: handlers.ScanLibraryRequest{},
@@ -835,22 +834,6 @@ var Schemas = map[string]Schema{
 	"DELETE /api/devices/:id/file-aliases/:aliasId": {
 		Response: json.RawMessage(`{"message": ""}`),
 	},
-	"POST /api/collections/:id/rules": {
-		// First rule converts a static collection to smart.
-		Request: handlers.AddRuleRequest{},
-		Response: json.RawMessage(`{
-			"collection_id": "", "rule": {}, "is_smart": false
-		}`),
-	},
-	"DELETE /api/collections/:id/rules/:ruleId": {
-		Response: json.RawMessage(`{
-			"collection_id": "", "is_smart": false
-		}`),
-	},
-	"POST /api/collections/test-rules": {
-		Request:  handlers.TestRulesRequest{},
-		Response: json.RawMessage(`{"matches": [], "total": 0}`),
-	},
 	"POST /api/collections/:id/books": {
 		// Bulk add: {operations: [{collection_id, book_ids:[...]}]}.
 		Request: json.RawMessage(`{

internal/docs/ui_labels_test.go

@@ -0,0 +1,215 @@
+package docs
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// TestUIControlLabels holds the UI documentation to the source of the UI.
+// The glossary (docs/developer/ui-controls.md) is the canonical spelling of
+// every control the docs cite; this test greps that spelling against the
+// server-rendered templates, so a renamed button fails make test in the
+// same commit as the rename — the class of rot screenshots could never be
+// gated. Dynamic (Alpine-composed) labels are OR-checked with their `also`
+// fragments instead of requiring the composed string to exist.
+//
+// Scope is substring-level (not word-boundary): the point is catching
+// renames and deletions, not stopping coincidental substrings. New controls
+// cited in prose get a glossary entry in the same commit (writing-ui-docs.md
+// is the standard; the filter docs are the hands-off exemplar).
+
+const (
+	labelGlossaryRel  = "../../docs/developer/ui-controls.md"
+	labelTemplRootRel = "../../templates"
+	labelTSRootRel    = "../../web/src"
+)
+
+type docGlossaryEntry struct {
+	label  string
+	where  string
+	does   string
+	source string
+	reason string
+	also   []string
+	skip   bool
+}
+
+// docCorpus concatenates every file under root ending in suffix.
+func docCorpus(t *testing.T, root string, suffix string) string {
+	t.Helper()
+	abs, err := filepath.Abs(root)
+	if err != nil {
+		t.Fatalf("abs %s: %v", root, err)
+	}
+	var b strings.Builder
+	err = filepath.WalkDir(abs, func(path string, d os.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() || !strings.HasSuffix(path, suffix) {
+			return nil
+		}
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			return err
+		}
+		b.Write(raw)
+		b.WriteString("\n")
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("walk %s: %v", root, err)
+	}
+	return b.String()
+}
+
+func corpusName(source string) string {
+	if source == "ts" {
+		return "web/src"
+	}
+	return "templ"
+}
+
+func parseUIControlsBlock(t *testing.T, raw string) []docGlossaryEntry {
+	t.Helper()
+
+	var block strings.Builder
+	inBlock, foundAny := false, false
+	for _, line := range strings.Split(raw, "\n") {
+		trimmed := strings.TrimSpace(line)
+		switch {
+		case strings.HasPrefix(trimmed, "```controls"):
+			inBlock, foundAny = true, true
+			continue
+		case trimmed == "```" && inBlock:
+			inBlock = false
+			continue
+		}
+		if inBlock {
+			block.WriteString(line)
+			block.WriteString("\n")
+		}
+	}
+	if !foundAny {
+		t.Fatalf("no ```controls block found in %s", labelGlossaryRel)
+	}
+
+	var entries []docGlossaryEntry
+	haveCur := false
+	cur := docGlossaryEntry{}
+	flush := func() {
+		if haveCur {
+			entries = append(entries, cur)
+			haveCur = false
+		}
+	}
+	for _, line := range strings.Split(block.String(), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		key, val, ok := strings.Cut(line, ":")
+		if !ok {
+			t.Fatalf("malformed controls line %q (want `key: value`)", line)
+		}
+		key, val = strings.TrimSpace(key), strings.TrimSpace(val)
+		switch key {
+		case "label":
+			flush()
+			haveCur = true
+			cur = docGlossaryEntry{label: val}
+		case "where":
+			cur.where = val
+		case "does":
+			cur.does = val
+		case "source":
+			cur.source = val
+		case "also":
+			for _, frag := range strings.Split(val, "|") {
+				if frag = strings.TrimSpace(frag); frag != "" {
+					cur.also = append(cur.also, frag)
+				}
+			}
+		case "skip":
+			cur.skip = val == "true"
+		case "reason":
+			cur.reason = val
+		case "note":
+			// free text for humans
+		default:
+			t.Fatalf("unknown field in controls block: %q (allowed: label|where|does|source|also|skip|reason|note)", key)
+		}
+	}
+	flush()
+	return entries
+}
+
+func TestUIControlLabels(t *testing.T) {
+	raw, err := os.ReadFile(labelGlossaryRel)
+	if err != nil {
+		t.Fatalf("read glossary: %v", err)
+	}
+	entries := parseUIControlsBlock(t, string(raw))
+	if len(entries) == 0 {
+		t.Fatalf("glossary has no entries — add at least one before citing controls")
+	}
+
+	tmplRequired, tsRequired := false, false
+	for _, e := range entries {
+		if e.source == "ts" {
+			tsRequired = true
+		} else {
+			tmplRequired = true
+		}
+	}
+	corpora := map[string]string{}
+	if tmplRequired {
+		corpora[corpusName("")] = docCorpus(t, labelTemplRootRel, ".templ")
+	}
+	if tsRequired {
+		corpora[corpusName("ts")] = docCorpus(t, labelTSRootRel, ".ts")
+	}
+
+	seen := map[string]int{}
+	for _, e := range entries {
+		if e.label == "" {
+			t.Errorf("entry with empty label (where: %q, does: %q)", e.where, e.does)
+			continue
+		}
+		seen[e.label]++
+		if e.where == "" || e.does == "" {
+			t.Errorf("control %q: `where` and `does` are required", e.label)
+		}
+		if e.skip && e.reason == "" {
+			t.Errorf("control %q: skip=true requires a reason", e.label)
+		}
+		switch e.source {
+		case "", "templ", "ts":
+		default:
+			t.Errorf("control %q: unknown source %q (templ|ts)", e.label, e.source)
+		}
+		if e.skip {
+			continue
+		}
+
+		fragments := append([]string{e.label}, e.also...)
+		found := false
+		for _, frag := range fragments {
+			if strings.Contains(corpora[corpusName(e.source)], frag) {
+				found = true
+				break
+			}
+		}
+		if !found {
+			t.Errorf("control %q (%s): none of the fragments [%s] found in %s sources — the label was renamed or the glossary is stale. Update ui-controls.md in the same commit as the rename.",
+				e.label, e.where, strings.Join(fragments, " | "), corpusName(e.source))
+		}
+	}
+	for label, n := range seen {
+		if n > 1 {
+			t.Errorf("control %q listed %d times — one entry per control", label, n)
+		}
+	}
+}

internal/handlers/auth.go

@@ -6,6 +6,7 @@ package handlers
 import (
 	"bookhoard/internal/database"
 	"bookhoard/internal/middleware"
+	"bookhoard/internal/rls"
 	"bookhoard/internal/setupstatus"
 	"context"
 	"errors"
@@ -15,6 +16,7 @@ import (
 	"math"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 	"time"
 
@@ -122,9 +124,15 @@ type UserProfile struct {
 	Role      string `json:"role"`
 	Theme     string `json:"theme,omitempty"`
 	// User-level default audiobook playback speed (plan §8); 0 omits.
-	DefaultAudioSpeed float64 `json:"default_audio_speed,omitempty"`
-	// Whether the web reader/player should hold a Screen Wake Lock.
+	// Response-only struct: omit nothing — default_audio_speed is NOT NULL
+	// DEFAULT 1.0 (writes validate 0.25–4), so a real profile always emits
+	// it; omitempty here would drop a contract field from the docs gate.
+	DefaultAudioSpeed float64 `json:"default_audio_speed"`	// Whether the web reader/player should hold a Screen Wake Lock.
 	KeepScreenAwake bool `json:"keep_screen_awake"`
+	// Resume rewind: seconds before the saved position the audio
+	// player starts (open-resume and every genuine unpause). 0 is a
+	// real value (exact resume) — never omitted.
+	AudioResumeRewind int `json:"audio_resume_rewind_seconds"`
 }
 
 type ProfileUpdateRequest struct {
@@ -141,6 +149,11 @@ type ProfileUpdateRequest struct {
 	// Per the SPEEDS list bounds; the profile select always sends it,
 	// JSON clients omit it (0 = untouched).
 	DefaultAudioSpeed float64 `json:"default_audio_speed,omitempty" form:"default_audio_speed" validate:"omitempty,min=0.25,max=4"`
+	// Resume rewind seconds, as the form select sends it ("0"/"5"/"10").
+	// The string shape (keep_screen_awake precedent) lets the form
+	// select an explicit 0=Off while JSON clients that omit it decode
+	// as "" and leave the column untouched.
+	AudioResumeRewind string `json:"audio_resume_rewind_seconds,omitempty" form:"audio_resume_rewind_seconds" validate:"omitempty,oneof=0 5 10"`
 }
 
 // Register handles POST /api/auth/register
@@ -550,6 +563,7 @@ func (h *AuthHandler) GetProfile(c *echo.Context) error {
 		Theme:             user.Theme.String,
 		DefaultAudioSpeed: float64(user.DefaultAudioSpeed),
 		KeepScreenAwake:   user.KeepScreenAwake,
+		AudioResumeRewind: int(user.AudioResumeRewindSeconds),
 	})
 }
 
@@ -714,6 +728,24 @@ func (h *AuthHandler) UpdateProfile(c *echo.Context) error {
 		}
 	}
 
+	// Resume-rewind preference. The form select always sends it
+	// ("0"/"5"/"10"); JSON clients that omit it decode as "" and leave
+	// the column untouched. Strict allow-list — the three choices the
+	// UI offers are the only values the API accepts.
+	if req.AudioResumeRewind != "" {
+		rewind, err := strconv.Atoi(req.AudioResumeRewind)
+		if err != nil || (rewind != 0 && rewind != 5 && rewind != 10) {
+			return c.JSON(http.StatusBadRequest, map[string]string{"error": "audio_resume_rewind_seconds must be 0, 5, or 10"})
+		}
+		err = h.db.UpdateUserAudioResumeRewind(c.Request().Context(), database.UpdateUserAudioResumeRewindParams{
+			ID:                       targetUserUUID,
+			AudioResumeRewindSeconds: int32(rewind),
+		})
+		if err != nil {
+			return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
+		}
+	}
+
 	// Keep-screen-awake preference. The form dropdown always sends it
 	// ("true"/"false"); JSON clients that omit it decode as "" and leave
 	// the column untouched.
@@ -1145,6 +1177,11 @@ func (h *AuthHandler) generateJWT(userID string) (string, error) {
 }
 
 func (h *AuthHandler) CreateDefaultCollectionsForUser(ctx context.Context, userID pgtype.UUID) error {
+	// Registration runs BEFORE the JWT exists — the request context
+	// carries no identity, and the collections RLS insert policy
+	// (2026-10-31) would reject the five system-collection seeds.
+	// Declare the new user as the actor: owner == actor, policy passes.
+	ctx = rls.WithUser(ctx, userID)
 	defaultCollections := []struct {
 		Name        string
 		Description string

internal/handlers/cards.go

@@ -43,6 +43,21 @@ type BookInfo struct {
 	// it empty rather than pay a join).
 	ViewerPercentage *float64 `json:"viewer_percentage"`
 	LibraryName      string   `json:"library_name"`
+	// Episode-collections extras (plan item 2.3): populated only by the
+	// collection-detail adapter. IsEpisode renders the episode-row
+	// variant in the grid; FeedTitle disambiguates same-named episodes;
+	// DownloadState gates the play affordance. Hidden=true means the
+	// LEFT JOIN missed under RLS (unsubscribed episode, or a
+	// family-lens hidden book) — the row renders as an "unavailable"
+	// hint instead of silently vanishing. Adapters that don't load
+	// visibility leave Hidden false (cards stay fully rendered). The
+	// four keys are NOT omitempty: every BookInfo surface emits the
+	// same stable key set (the viewer_percentage precedent —
+	// contract-pin widening, docs/contract_pins.md 2026-10-30).
+	IsEpisode     bool   `json:"is_episode"`
+	FeedTitle     string `json:"feed_title"`
+	DownloadState string `json:"download_state"`
+	Hidden        bool   `json:"hidden"`
 }
 
 // LibraryTypeMap builds libraryID→library-type-name for badge resolution
@@ -151,8 +166,7 @@ func BookCardsFromCollectionDashRows(rows []database.GetCollectionItemsForDashbo
 			ID:          uuid.UUID(mi.ID.Bytes),
 			Title:       mi.Title,
 			Author:      utils.PgTextString(mi.Author),
-			LibraryID:   mi.LibraryID,
-			CoverPath:   mi.CoverImagePath,
+			LibraryID:   mi.LibraryID,			CoverPath:   mi.CoverImagePath,
 			FormatGroup: mi.FormatGroup,
 			LibraryType: libTypes[uuid.UUID(mi.LibraryID.Bytes).String()],
 		}))
@@ -180,6 +194,39 @@ func BookCardsFromCollectionItemRows(rows []database.GetCollectionItemsRow, libT
 	return cards
 }
 
+// BookCardsFromCollectionDetailed builds cards from the
+// GetCollectionItemsDetailed rows (plan item 2.3): the collection's
+// full membership with per-row visibility. RLS-invisible rows
+// (unsubscribed episode, family-lens hidden book) become Hidden cards
+// — the grid renders them as "unavailable" hint rows; episode rows
+// carry feed title + download state for the play affordance. Unknown
+// library types resolve no badge; hidden rows need none anyway.
+func BookCardsFromCollectionDetailed(rows []database.GetCollectionItemsDetailedRow, libTypes map[string]string) []BookInfo {
+	cards := make([]BookInfo, 0, len(rows))
+	for _, r := range rows {
+		if !r.Visible {
+			cards = append(cards, BookInfo{
+				MediaItemID: uuid.UUID(r.MediaItemID.Bytes).String(),
+				Hidden:      true,
+			})
+			continue
+		}
+		isEpisode := r.Source.String == "podcast_episode"
+		card := buildBookCard(cardSource{
+			ID:          uuid.UUID(r.MediaItemID.Bytes),
+			Title:       utils.PgTextString(r.Title),
+			Author:      utils.PgTextString(r.Author),
+			CoverPath:   r.CoverImagePath,
+			FormatGroup: r.FormatGroup.String,
+		})
+		card.IsEpisode = isEpisode
+		card.FeedTitle = r.FeedTitle.String
+		card.DownloadState = r.DownloadState.String
+		cards = append(cards, card)
+	}
+	return cards
+}
+
 // BookCardsFromUnified builds cards from search-unified rows. Those
 // rows carry the library type name as a SQL column, so this adapter
 // needs no LibraryTypeMap query at all — and the viewer's own

internal/handlers/collections.go

@@ -9,7 +9,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"strconv"
 	"strings"
 	"time"
 
@@ -26,10 +25,10 @@ type CollectionHandler struct {
 	connManager       *wsync.ConnectionManager
 }
 
-func NewCollectionHandler(db *database.Queries, libraryService *services.LibraryService, connManager *wsync.ConnectionManager) *CollectionHandler {
+func NewCollectionHandler(db *database.Queries, libraryService *services.LibraryService, connManager *wsync.ConnectionManager, search ...*services.SearchService) *CollectionHandler {
 	return &CollectionHandler{
 		db:                db,
-		collectionService: services.NewCollectionService(db),
+		collectionService: services.NewCollectionService(db, search...),
 		libraryService:    libraryService,
 		connManager:       connManager,
 	}
@@ -40,17 +39,113 @@ type CreateCollectionRequest struct {
 	Description    string `form:"description" json:"description"`
 	Color          string `form:"color" json:"color"`
 	Icon           string `form:"icon" json:"icon"`
-	CollectionType  string                 `form:"collection_type" json:"collection_type"` // "static" (default) or "smart" (rule-based)
-	AutoAssignRules []services.Rule        `form:"auto_assign_rules" json:"auto_assign_rules"`
+	CollectionType string `form:"collection_type" json:"collection_type"` // "static" (default) or "smart"
+	// Custom-section builder payload (adapted 2026-10-31): the page
+	// posts the legacy rules vocabulary — rules as a JSON-encoded array
+	// (a string), a match_type select, hand-picked book ids, and the
+	// dashboard pin. The server converts rules → filter tree at write
+	// time and attaches the manual picks; storage stays tree-only.
+	AutoAssignRules json.RawMessage        `json:"auto_assign_rules"`
+	MatchType       string                 `json:"match_type"`
+	ManualBookIDs   []string               `json:"manual_book_ids"`
+	LibraryID       string                 `json:"library_id"` // selection context only — not stored
+	ShowOnDashboard bool                   `json:"show_on_dashboard"`
 	ViewSettings    map[string]interface{} `form:"view_settings" json:"view_settings"`
+	// The unified filter tree (item 3.2): when present the collection's
+	// smart membership runs through the qf engine. INVALID trees are a
+	// 400 (ParseFilterTree at the handler); a tree supersedes
+	// auto_assign_rules. Persisted as-is (any). RawMessage for
+	// round-trip safety. JSON bodies bind FilterTree; FORM bodies
+	// (the create modal's urlencoded hx-post) bind FilterTreeForm —
+	// echo's binder cannot set an any-typed field from a form string
+	// (the create-modal seed POST 400'd "invalid request" on it,
+	// 2026-10-31).
+	FilterTree any `json:"filter_tree"`
+	// FilterTreeForm mirrors filter_tree for application/x-www-form-
+	// urlencoded submissions: the raw JSON as a string, validated by
+	// the same parseRequestFilterTree path.
+	FilterTreeForm string `form:"filter_tree"`
+}
+
+// parseBuilderRules decodes the custom-section builder's rules payload:
+// the page posts JSON.stringify(rules) — a JSON string CONTAINING the
+// array (it has done so since the page was written, 2026-02-19) — while
+// JSON clients may post the array directly. Null/empty = no rules.
+func parseBuilderRules(raw json.RawMessage) ([]services.Rule, error) {
+	if len(raw) == 0 || string(raw) == "null" {
+		return nil, nil
+	}
+	var rules []services.Rule
+	if raw[0] == '"' {
+		var encoded string
+		if err := json.Unmarshal(raw, &encoded); err != nil {
+			return nil, err
+		}
+		if strings.TrimSpace(encoded) == "" {
+			return nil, nil
+		}
+		return rules, json.Unmarshal([]byte(encoded), &rules)
+	}
+	return rules, json.Unmarshal(raw, &rules)
+}
+
+// treeFilterJSON returns the request's filter tree as JSON storage
+// bytes (nil when none): object payloads marshal; strings (a legacy
+// double-encoded client, the custom-section builder's known bug class)
+// are written verbatim after object-attempt.
+func treeFilterJSON(payload any) ([]byte, error) {
+	switch v := payload.(type) {
+	case nil:
+		return nil, nil
+	case map[string]interface{}:
+		b, err := json.Marshal(v)
+		if err != nil {
+			return nil, err
+		}
+		return b, nil
+	case string:
+		return []byte(v), nil
+	default:
+		return nil, fmt.Errorf("filter_tree must be an object")
+	}
+}
+
+// parseRequestFilterTree validates the request's tree against the
+// engine grammar (ParseFilterTree) so an invalid tree is a 400, never
+// a stored 500 at render time.
+func parseRequestFilterTree(payload any) ([]byte, error) {
+	b, err := treeFilterJSON(payload)
+	if err != nil || b == nil {
+		return b, err
+	}
+	if _, err := services.ParseFilterTree(string(b)); err != nil {
+		return nil, fmt.Errorf("invalid filter_tree: %w", err)
+	}
+	return b, nil
+}
+
+// resolveTreePayload — the tree payload from either transport: JSON
+// bodies carry the object in FilterTree, form bodies (the create
+// modal's urlencoded hx-post) the raw JSON string in FilterTreeForm.
+func resolveTreePayload(jsonTree any, formTree string) any {
+	if formTree != "" {
+		return formTree
+	}
+	return jsonTree
 }
 
 type UpdateCollectionRequest struct {
 	Name string `form:"name" json:"name" validate:"required"`
+	// The unified filter tree (item 3.2): when present the collection's
+	// smart membership runs through the qf engine. INVALID trees are a
+	// 400 (ParseFilterTree at the handler). JSON bodies bind FilterTree; form bodies bind
+	// FilterTreeForm (echo's binder cannot set an any-typed field from
+	// a form string — see CreateCollectionRequest).
+	FilterTree     any                    `json:"filter_tree"`
+	FilterTreeForm string                 `form:"filter_tree"`
 	Description    string                 `form:"description" json:"description"`
 	Color          string                 `form:"color" json:"color"`
 	Icon           string                 `form:"icon" json:"icon"`
-	AutoAssignRules []services.Rule        `form:"auto_assign_rules" json:"auto_assign_rules"`
 	ViewSettings   map[string]interface{} `form:"view_settings" json:"view_settings"`
 	// A2c §3.3: playlist toggles — merged into view_settings server-side
 	// (nil = untouched). []string because the form posts a hidden "false"
@@ -94,7 +189,6 @@ type CollectionSummary struct {
 	Description string    `json:"description"`
 	Color       string    `json:"color"`
 	Icon        string    `json:"icon"`
-	AutoAssignRules json.RawMessage `json:"auto_assign_rules"`
 	CreatedAt   string    `json:"created_at"`
 	BookCount   int       `json:"book_count"`
 	IsSmart     bool      `json:"is_smart"`
@@ -138,6 +232,55 @@ func (h *CollectionHandler) CreateCollection(c *echo.Context) error {
 		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
 	}
 
+	// Custom-section builder adapter: convert the posted rules to a
+	// filter tree at WRITE time (the save-fix — the page's payload had
+	// never once bound successfully before this).
+	builderRules, rulesErr := parseBuilderRules(req.AutoAssignRules)
+	if rulesErr != nil {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": "auto_assign_rules: " + rulesErr.Error()})
+	}
+	matchMode := req.MatchType
+	if matchMode != services.RuleMatchAll && matchMode != services.RuleMatchAny {
+		matchMode = services.RuleMatchAny
+	}
+	treeJSON, treeErr := parseRequestFilterTree(resolveTreePayload(req.FilterTree, req.FilterTreeForm))
+	if treeErr != nil {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": treeErr.Error()})
+	}
+	if treeJSON == nil && len(builderRules) > 0 {
+		tree, cerr := services.RulesToFilterTree(builderRules, matchMode)
+		if cerr != nil {
+			return c.JSON(http.StatusBadRequest, map[string]string{"error": "section rule: " + cerr.Error()})
+		}
+		b, merr := json.Marshal(tree)
+		if merr != nil {
+			return c.JSON(http.StatusInternalServerError, map[string]string{"error": merr.Error()})
+		}
+		// The strict-parse guarantee holds for converted trees too: an
+		// invalid tree is a 400 at write, never a stored 500 at render.
+		if _, verr := services.ParseFilterTree(string(b)); verr != nil {
+			return c.JSON(http.StatusBadRequest, map[string]string{"error": "section rule: " + verr.Error()})
+		}
+		treeJSON = b
+	}
+	// New podcast smart collections are BORN with the reversed listening
+	// default (2026-11-01 user request): seed chain_order into
+	// view_settings at creation — the dropdown shows "Feed order
+	// (reversed)" selected and the chain/page machinery reads the stored
+	// value exactly as if picked. Episodes-scope trees only (books have
+	// no episode chain); merge semantics never clobber a value the
+	// request itself sent; existing collections are untouched.
+	if treeJSON != nil {
+		if t, perr := services.ParseFilterTree(string(treeJSON)); perr == nil &&
+			t.FilterScope() == services.ScopeEpisodes {
+			if req.ViewSettings == nil {
+				req.ViewSettings = map[string]interface{}{}
+			}
+			if _, exists := req.ViewSettings["chain_order"]; !exists {
+				req.ViewSettings["chain_order"] = "reverse"
+			}
+		}
+	}
 	collection, err := h.collectionService.CreateCollection(
 		c.Request().Context(),
 		userUUID,
@@ -145,8 +288,9 @@ func (h *CollectionHandler) CreateCollection(c *echo.Context) error {
 		req.Description,
 		req.Color,
 		req.Icon,
-		req.AutoAssignRules,
 		req.ViewSettings,
+		req.ShowOnDashboard,
+		treeJSON,
 	)
 	if err != nil {
 		if errors.Is(err, services.ErrCollectionNameTaken) {
@@ -155,8 +299,19 @@ func (h *CollectionHandler) CreateCollection(c *echo.Context) error {
 		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
 	}
 
+	// Manual picks: a section = rules + hand-picked books. Attach after
+	// create; unparsable ids are skipped (same leniency as AddBooks).
+	for _, bookIDStr := range req.ManualBookIDs {
+		bookID, perr := uuid.Parse(bookIDStr)
+		if perr != nil {
+			continue
+		}
+		_ = h.collectionService.AddBookToCollection(c.Request().Context(),
+			uuid.UUID(collection.ID.Bytes), bookID, userUUID)
+	}
+
 	bookCount := int32(0)
-	isSmart := req.CollectionType == "smart" || len(req.AutoAssignRules) > 0
+	isSmart := req.CollectionType == "smart" || treeJSON != nil
 	response := map[string]interface{}{
 		"id":              uuid.UUID(collection.ID.Bytes).String(),
 		"user_id":         uuid.UUID(collection.UserID.Bytes).String(),
@@ -165,7 +320,6 @@ func (h *CollectionHandler) CreateCollection(c *echo.Context) error {
 		"color":           utils.PgTextString(collection.Color),
 		"icon":            utils.PgTextString(collection.Icon),
 		"collection_type": map[bool]string{true: "smart", false: "static"}[isSmart],
-		"auto_assign_rules": collection.AutoAssignRules,
 		"view_settings":   collection.ViewSettings,
 		"book_count":      bookCount,
 		"created_at":      collection.CreatedAt.Time.String(),
@@ -197,7 +351,7 @@ func (h *CollectionHandler) GetCollections(c *echo.Context) error {
 
 	response := make([]CollectionSummary, 0, len(collections))
 	for _, col := range collections {
-		isSmart := h.collectionService.IsSmartCollection(col.AutoAssignRules)
+		isSmart := services.IsCollectionSmart(col)
 		if !includeAuto && isSmart {
 			// Legacy default for API clients (the Android app pre-dates
 			// smart collections): rule-driven collections stay opt-in so
@@ -213,12 +367,12 @@ func (h *CollectionHandler) GetCollections(c *echo.Context) error {
 			}
 		}
 		if isSmart {
-			rules := h.collectionService.ParseRules(col.AutoAssignRules)
 			visibleIDs, visErr := h.userVisibleLibraryIDs(c)
 			if visErr == nil {
-				matches, evalErr := h.collectionService.EvaluateSmartCollection(c.Request().Context(), rules, services.SmartEvalOptions{
+				matches, evalErr := h.collectionService.EvaluateSmartMembership(c.Request().Context(), col, services.SmartEvalOptions{
 					LibraryID:    libUUID,
 					VisibleIDs:   visibleIDs,
+					ViewerUserID: MustGetAuthenticatedUser(c).ID,
 				})
 				if evalErr == nil {
 					bookCount = len(matches)
@@ -240,7 +394,6 @@ func (h *CollectionHandler) GetCollections(c *echo.Context) error {
 			Description: utils.PgTextString(col.Description),
 			Color:       utils.PgTextString(col.Color),
 			Icon:        utils.PgTextString(col.Icon),
-			AutoAssignRules: col.AutoAssignRules,
 			CreatedAt:   col.CreatedAt.Time.String(),
 			BookCount:   bookCount,
 			IsSmart:     isSmart,
@@ -286,17 +439,17 @@ func (h *CollectionHandler) GetCollection(c *echo.Context) error {
 		libUUID = pgtype.UUID{Bytes: parsed, Valid: true}
 	}
 
-	isSmart := h.collectionService.IsSmartCollection(collection.AutoAssignRules)
+	isSmart := services.IsCollectionSmart(collection)
 	libTypes := LibraryTypeMap(c.Request().Context(), h.db)
 	if isSmart {
-		rules := h.collectionService.ParseRules(collection.AutoAssignRules)
 		visibleIDs, err := h.userVisibleLibraryIDs(c)
 		if err != nil {
 			return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
 		}
-		matches, evalErr := h.collectionService.EvaluateSmartCollection(c.Request().Context(), rules, services.SmartEvalOptions{
+		matches, evalErr := h.collectionService.EvaluateSmartMembership(c.Request().Context(), collection, services.SmartEvalOptions{
 			LibraryID:    libUUID,
 			VisibleIDs:   visibleIDs,
+			ViewerUserID: MustGetAuthenticatedUser(c).ID,
 		})
 		if evalErr != nil {
 			return c.JSON(http.StatusInternalServerError, map[string]string{"error": evalErr.Error()})
@@ -305,7 +458,7 @@ func (h *CollectionHandler) GetCollection(c *echo.Context) error {
 	} else if collection.IsSystemCollection.Bool && collection.QueryType.Valid && collection.QueryType.String != "" && collection.QueryType.String != "filter" {
 		user := c.Get("user").(database.Users)
 		userUUID := uuid.UUID(user.ID.Bytes)
-		dashboardSvc := services.NewDashboardService(h.db)
+		dashboardSvc := services.NewDashboardService(h.db, h.collectionService.Search())
 		sections, secErr := dashboardSvc.GetDashboardSections(c.Request().Context(), userUUID, libUUID, 1000, []string{}, []string{})
 		if secErr != nil {
 			return c.JSON(http.StatusInternalServerError, map[string]string{"error": secErr.Error()})
@@ -409,8 +562,8 @@ func (h *CollectionHandler) GetCollection(c *echo.Context) error {
 		"description":   utils.PgTextString(collection.Description),
 		"color":         utils.PgTextString(collection.Color),
 		"icon":          utils.PgTextString(collection.Icon),
-		"auto_assign_rules": json.RawMessage(collection.AutoAssignRules),
 		"view_settings": viewSettings,
+		"filter_tree":   treeEnvelope(collection.FilterTree),
 		"books":         bookList,
 		"book_count":    len(bookList),
 		"is_smart":      isSmart,
@@ -450,6 +603,31 @@ func (h *CollectionHandler) UpdateCollection(c *echo.Context) error {
 		req.ViewSettings["show_up_next"] = *v
 	}
 
+	treeJSON, treeErr := parseRequestFilterTree(resolveTreePayload(req.FilterTree, req.FilterTreeForm))
+	if treeErr != nil {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": treeErr.Error()})
+	}
+	// Applying a tree to a collection with NO curated listening order
+	// seeds the reversed default (2026-11-01 — the creation seed's twin):
+	// a static collection becoming smart lands with the same default a
+	// born-smart one gets. Triple-guarded: the client's explicit
+	// chain_order wins, a STORED chain_order is never clobbered, and
+	// only episodes-scope trees seed (books have no episode chain).
+	if treeJSON != nil && (req.ViewSettings == nil || req.ViewSettings["chain_order"] == nil) {
+		if t, perr := services.ParseFilterTree(string(treeJSON)); perr == nil &&
+			t.FilterScope() == services.ScopeEpisodes {
+			if existing, gerr := h.collectionService.GetCollection(c.Request().Context(), collectionID); gerr == nil {
+				var stored map[string]interface{}
+				_ = json.Unmarshal(existing.ViewSettings, &stored)
+				if stored == nil || stored["chain_order"] == nil {
+					if req.ViewSettings == nil {
+						req.ViewSettings = map[string]interface{}{}
+					}
+					req.ViewSettings["chain_order"] = "reverse"
+				}
+			}
+		}
+	}
 	collection, err := h.collectionService.UpdateCollection(
 		c.Request().Context(),
 		collectionID,
@@ -457,10 +635,16 @@ func (h *CollectionHandler) UpdateCollection(c *echo.Context) error {
 		req.Description,
 		req.Color,
 		req.Icon,
-		req.AutoAssignRules,
 		req.ViewSettings,
+		treeJSON,
 	)
 	if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			// Collections RLS: another user's collection is INVISIBLE —
+			// the update touched no rows. Answer 404, not a 500 that
+			// reads like a bug (2026-10-31 collections RLS).
+			return c.JSON(http.StatusNotFound, map[string]string{"error": "collection not found"})
+		}
 		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
 	}
 
@@ -471,7 +655,6 @@ func (h *CollectionHandler) UpdateCollection(c *echo.Context) error {
 		"description":   utils.PgTextString(collection.Description),
 		"color":         utils.PgTextString(collection.Color),
 		"icon":          utils.PgTextString(collection.Icon),
-		"auto_assign_rules": json.RawMessage(collection.AutoAssignRules),
 		"view_settings": json.RawMessage(collection.ViewSettings),
 		"created_at":    collection.CreatedAt.Time.String(),
 	}
@@ -484,6 +667,99 @@ func (h *CollectionHandler) UpdateCollection(c *echo.Context) error {
 	return c.JSON(http.StatusCreated, response)
 }
 
+// ValidChainOrders — the collection chain's listening-order vocabulary
+// (plan §10 R2: a collection's playback order is CURATED on the
+// collection, not a player-side knob). Mirrors OrderEpisodes' orders;
+// "" means native (the pre-chain-order default).
+var ValidChainOrders = map[string]bool{"": true, "native": true, "newest": true, "oldest": true, "reverse": true}
+
+// CollectionChainOrder resolves a collection row's curated chain order
+// from its view_settings JSONB — "" (native) when absent/unknown. The
+// episode chain producer routes OrderEpisodes through this; the
+// view-settings PUT writes the key (SetCollectionChainOrder).
+func CollectionChainOrder(viewSettings []byte) string {
+	if len(viewSettings) == 0 {
+		return ""
+	}
+	var vs map[string]interface{}
+	if json.Unmarshal(viewSettings, &vs) != nil {
+		return ""
+	}
+	if s, ok := vs["chain_order"].(string); ok && ValidChainOrders[s] {
+		return s
+	}
+	return ""
+}
+
+// SetCollectionChainOrder — PUT /api/collections/:id/view-settings with
+// {"chain_order": "..."}: merges the key into the collection's stored
+// view_settings (the playlist toggles share that JSONB — a blind write
+// would clobber them). The episode chain producer
+// (buildSmartCollectionSequenceContext) honors it.
+func (h *CollectionHandler) SetCollectionChainOrder(c *echo.Context) error {
+	collectionID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid collection id"})
+	}
+
+	var req struct {
+		ChainOrder string `json:"chain_order"`
+	}
+	if err := c.Bind(&req); err != nil {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid request"})
+	}
+	if !ValidChainOrders[req.ChainOrder] {
+		return c.JSON(http.StatusBadRequest, map[string]string{
+			"error": "chain_order must be one of: native, newest, oldest, reverse"})
+	}
+
+	collection, err := h.collectionService.GetCollection(c.Request().Context(), collectionID)
+	if err != nil {
+		return c.JSON(http.StatusNotFound, map[string]string{"error": "collection not found"})
+	}
+	// Same owner gate as the sibling config mutation (ReorderItems) —
+	// my endpoint writes the row, so it must not let a non-owner flip
+	// someone else's chain order.
+	if u, ok := c.Get("user").(database.Users); ok {
+		owns, err := h.collectionService.UserOwnsCollection(c.Request().Context(), collectionID, uuid.UUID(u.ID.Bytes))
+		if err != nil || !owns {
+			return c.JSON(http.StatusForbidden, map[string]string{"error": "only the collection owner can change it"})
+		}
+	} else {
+		return c.JSON(http.StatusUnauthorized, map[string]string{"error": "no user in context"})
+	}
+
+	settings := map[string]interface{}{}
+	if len(collection.ViewSettings) > 0 {
+		if uerr := json.Unmarshal(collection.ViewSettings, &settings); uerr != nil {
+			return c.JSON(http.StatusInternalServerError, map[string]string{"error": "corrupt view_settings"})
+		}
+	}
+	if req.ChainOrder == "" || req.ChainOrder == "native" {
+		// Both spellings mean the default — drop the key entirely so the
+		// stored doc stays clean.
+		delete(settings, "chain_order")
+	} else {
+		settings["chain_order"] = req.ChainOrder
+	}
+	blob, err := json.Marshal(settings)
+	if err != nil {
+		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
+	}
+	if err := h.db.UpdateCollectionViewSettings(c.Request().Context(), database.UpdateCollectionViewSettingsParams{
+		ID:           pgtype.UUID{Bytes: collectionID, Valid: true},
+		ViewSettings: blob,
+	}); err != nil {
+		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
+	}
+
+	return c.JSON(http.StatusOK, map[string]interface{}{
+		"id":            uuid.UUID(collection.ID.Bytes).String(),
+		"chain_order":   req.ChainOrder,
+		"view_settings": settings,
+	})
+}
+
 func (h *CollectionHandler) DeleteCollection(c *echo.Context) error {
 	collectionID, err := uuid.Parse(c.Param("id"))
 	if err != nil {
@@ -851,278 +1127,25 @@ func (h *CollectionHandler) rejectSmartMutation(c *echo.Context, collectionID uu
 	if err != nil {
 		return echo.NewHTTPError(http.StatusNotFound, "collection not found")
 	}
-	if h.collectionService.IsSmartCollection(collection.AutoAssignRules) {
-		return echo.NewHTTPError(http.StatusBadRequest, "smart collections are rule-based — membership is managed by the collection's rules, not by hand")
+	if services.IsCollectionSmart(collection) {
+		return echo.NewHTTPError(http.StatusBadRequest, "smart collections are tree-based — membership is managed by the collection's filter tree, not by hand")
 	}
 	return nil
 }
 
-type AddRuleRequest struct {
-	Field    string `json:"field" validate:"required"`
-	Operator string `json:"operator" validate:"required"`
-	Value    string `json:"value" validate:"required"`
-	Enabled  *bool  `json:"enabled"`
-	Priority int    `json:"priority"`
+// treeEnvelope renders the stored filter tree for the envelope: nil
+// (static collections) serializes as null, trees as the object.
+func treeEnvelope(t []byte) any {
+	if len(t) == 0 {
+		return nil
+	}
+	var v interface{}
+	if json.Unmarshal(t, &v) == nil {
+		return v
+	}
+	return nil
 }
 
-// AddRule handles POST /api/collections/:id/rules — appends one rule to
-// the ruleset. The first rule converts a static collection to smart.
-func (h *CollectionHandler) AddRule(c *echo.Context) error {
-	collectionID, err := uuid.Parse(c.Param("id"))
-	if err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid collection id"})
-	}
-
-	collection, err := h.GetCollectionData(c, collectionID)
-	if err != nil {
-		return c.JSON(http.StatusNotFound, map[string]string{"error": "collection not found"})
-	}
-	if collection.IsSystemCollection.Bool {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "system collections cannot have rules"})
-	}
-
-	var req AddRuleRequest
-	if err := c.Bind(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid request"})
-	}
-	if err := c.Validate(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
-	}
-
-	updated, rule, err := h.collectionService.AddRule(c.Request().Context(), collectionID, services.Rule{
-		Field:    req.Field,
-		Operator: req.Operator,
-		Value:    req.Value,
-		Enabled:  req.Enabled,
-		Priority: req.Priority,
-	})
-	if err != nil {
-		var ruleErr *services.RuleValidationError
-		if errors.As(err, &ruleErr) {
-			return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
-		}
-		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
-	}
-
-	return c.JSON(http.StatusCreated, map[string]interface{}{
-		"collection_id": uuid.UUID(updated.ID.Bytes).String(),
-		"rule":          rule,
-		"is_smart":      h.collectionService.IsSmartCollection(updated.AutoAssignRules),
-	})
-}
-
-// UpdateRule handles PUT /api/collections/:id/rules/:ruleId — currently
-// the enabled toggle; the payload may only carry {"enabled": bool}.
-func (h *CollectionHandler) UpdateRule(c *echo.Context) error {
-	collectionID, err := uuid.Parse(c.Param("id"))
-	if err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid collection id"})
-	}
-	ruleID := c.Param("ruleId")
-	if ruleID == "" {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "rule id required"})
-	}
-
-	var req struct {
-		Enabled *bool `json:"enabled" validate:"required"`
-	}
-	if err := c.Bind(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid request"})
-	}
-	if err := c.Validate(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
-	}
-
-	updated, err := h.collectionService.SetRuleEnabled(c.Request().Context(), collectionID, ruleID, *req.Enabled)
-	if err != nil {
-		if strings.Contains(err.Error(), "rule not found") {
-			return c.JSON(http.StatusNotFound, map[string]string{"error": err.Error()})
-		}
-		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
-	}
-
-	return c.JSON(http.StatusOK, map[string]interface{}{
-		"collection_id": uuid.UUID(updated.ID.Bytes).String(),
-		"is_smart":      h.collectionService.IsSmartCollection(updated.AutoAssignRules),
-	})
-}
-
-// RemoveRule handles DELETE /api/collections/:id/rules/:ruleId.
-func (h *CollectionHandler) RemoveRule(c *echo.Context) error {
-	collectionID, err := uuid.Parse(c.Param("id"))
-	if err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid collection id"})
-	}
-	ruleID := c.Param("ruleId")
-	if ruleID == "" {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "rule id required"})
-	}
-
-	updated, err := h.collectionService.RemoveRule(c.Request().Context(), collectionID, ruleID)
-	if err != nil {
-		if strings.Contains(err.Error(), "rule not found") {
-			return c.JSON(http.StatusNotFound, map[string]string{"error": err.Error()})
-		}
-		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
-	}
-
-	return c.JSON(http.StatusOK, map[string]interface{}{
-		"collection_id": uuid.UUID(updated.ID.Bytes).String(),
-		"is_smart":      h.collectionService.IsSmartCollection(updated.AutoAssignRules),
-	})
-}
-
-type TestRulesRequest struct {
-	Rules []map[string]interface{} `json:"rules" validate:"required"`
-}
-
-type BookMatch struct {
-	MediaItemID    string `json:"media_item_id"`
-	Title          string `json:"title"`
-	Author         string `json:"author"`
-	CoverImagePath string `json:"cover_image_path"`
-	MatchReason    string `json:"match_reason"`
-}
-
-func (h *CollectionHandler) TestRules(c *echo.Context) error {
-	var req TestRulesRequest
-	if err := c.Bind(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": "invalid request"})
-	}
-	if err := c.Validate(&req); err != nil {
-		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
-	}
-
-	// Candidates mirror what smart collections actually evaluate against:
-	// the requester's visible libraries and live items only — the preview
-	// must not promise matches the live render will never produce.
-	visibleIDs, err := h.userVisibleLibraryIDs(c)
-	if err != nil {
-		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
-	}
-	var visibleArg []pgtype.UUID
-	if len(visibleIDs) > 0 {
-		visibleArg = visibleIDs
-	}
-	mediaItems, err := h.db.GetVisibleLiveMediaForRules(c.Request().Context(), database.GetVisibleLiveMediaForRulesParams{
-		LibraryID:         pgtype.UUID{},
-		VisibleLibraryIds: visibleArg,
-	})
-	if err != nil {
-		return c.JSON(http.StatusInternalServerError, map[string]string{"error": "failed to load media items"})
-	}
-
-	var matches []BookMatch
-	for _, item := range mediaItems {
-		matchReason := h.checkRulesAgainstBook(item, req.Rules)
-		if matchReason != "" {
-			author := ""
-			if item.Author.Valid {
-				author = item.Author.String
-			}
-
-			matches = append(matches, BookMatch{
-				MediaItemID:    uuid.UUID(item.ID.Bytes).String(),
-				Title:          item.Title,
-				Author:         author,
-				CoverImagePath: utils.ResolveMediaURL(item.LibraryID, item.CoverImagePath),
-				MatchReason:    matchReason,
-			})
-		}
-	}
-
-	return c.JSON(http.StatusOK, map[string]interface{}{
-		"matches": matches,
-		"total":   len(matches),
-	})
-}
-
-func (h *CollectionHandler) checkRulesAgainstBook(item database.MediaItems, rules []map[string]interface{}) string {
-	for _, rule := range rules {
-		field, _ := rule["field"].(string)
-		operator, _ := rule["operator"].(string)
-		value, _ := rule["value"].(string)
-
-		if h.evaluateRule(item, field, operator, value) {
-			return fmt.Sprintf("Matched rule: %s %s %s", field, operator, value)
-		}
-	}
-	return ""
-}
-
-func (h *CollectionHandler) evaluateRule(item database.MediaItems, field, operator, value string) bool {
-	var itemValue string
-
-	switch field {
-	case "genre":
-		if item.Genre.Valid {
-			itemValue = item.Genre.String
-		}
-	case "series":
-		if item.Series.Valid {
-			itemValue = item.Series.String
-		}
-	case "author":
-		if item.Author.Valid {
-			itemValue = item.Author.String
-		}
-	case "language":
-		if item.Language.Valid {
-			itemValue = item.Language.String
-		}
-	case "publisher":
-		if item.Publisher.Valid {
-			itemValue = item.Publisher.String
-		}
-	case "copyright_year":
-		if item.CopyrightYear.Valid {
-			itemValue = fmt.Sprintf("%d", item.CopyrightYear.Int32)
-		}
-	case "tags":
-		if len(item.Tags) > 0 {
-			itemValue = strings.Join(item.Tags, ", ")
-		}
-	}
-
-	return h.compareValues(itemValue, operator, value)
-}
-
-func (h *CollectionHandler) compareValues(itemValue, operator, ruleValue string) bool {
-	switch operator {
-	case "equals":
-		return itemValue == ruleValue
-	case "not_equals":
-		return itemValue != ruleValue
-	case "contains":
-		return strings.Contains(strings.ToLower(itemValue), strings.ToLower(ruleValue))
-	case "not_contains":
-		return !strings.Contains(strings.ToLower(itemValue), strings.ToLower(ruleValue))
-	case "starts_with":
-		return strings.HasPrefix(strings.ToLower(itemValue), strings.ToLower(ruleValue))
-	case "ends_with":
-		return strings.HasSuffix(strings.ToLower(itemValue), strings.ToLower(ruleValue))
-	case "greater_than":
-		itemNum, err1 := strconv.Atoi(itemValue)
-		ruleNum, err2 := strconv.Atoi(ruleValue)
-		if err1 != nil || err2 != nil {
-			return false
-		}
-		return itemNum > ruleNum
-	case "less_than":
-		itemNum, err1 := strconv.Atoi(itemValue)
-		ruleNum, err2 := strconv.Atoi(ruleValue)
-		if err1 != nil || err2 != nil {
-			return false
-		}
-		return itemNum < ruleNum
-	}
-	return false
-}
-
-// Bulk Operations
-
-// POST /api/collections/bulk-add-books
-// Bulk add books to multiple collections
 func (h *CollectionHandler) HandleBulkAddBooks(c *echo.Context) error {
 	user := c.Get("user").(database.Users)
 	userUUID := uuid.UUID(user.ID.Bytes)
@@ -1268,9 +1291,12 @@ func (h *CollectionHandler) PreviewCollection(c *echo.Context) error {
 		return c.JSON(http.StatusInternalServerError, map[string]string{"error": "Failed to load library items"})
 	}
 
+	// Book-scope preview (the rules page remains books-first until the
+	// filter-unification pass); no viewer progress loaded here, so
+	// played/unplayed rules preview at the no-progress default.
 	var matchedItems []database.MediaItems
 	for _, item := range allItems {
-		evaluations := h.collectionService.EvaluateRules(item, req.Rules)
+		evaluations := h.collectionService.EvaluateRules(item, 0, req.Rules)
 		for _, eval := range evaluations {
 			if eval.Matches {
 				matchedItems = append(matchedItems, item)

internal/handlers/collections_chain_order_test.go

@@ -0,0 +1,30 @@
+package handlers
+
+import "testing"
+
+// The collection chain's curated order (plan §10 R2): the resolver
+// reads view_settings.chain_order, tolerates absent/corrupt docs, and
+// refuses unknown orders (they mean native).
+func TestCollectionChainOrder(t *testing.T) {
+	cases := []struct {
+		name string
+		vs   string
+		want string
+	}{
+		{"absent doc", "", ""},
+		{"empty object", `{}`, ""},
+		{"reverse", `{"chain_order":"reverse"}`, "reverse"},
+		{"newest", `{"chain_order":"newest"}`, "newest"},
+		{"merged with toggles", `{"hide_finished":true,"chain_order":"oldest"}`, "oldest"},
+		{"unknown order means native", `{"chain_order":"shuffle"}`, ""},
+		{"non-string means native", `{"chain_order":3}`, ""},
+		{"corrupt doc means native", `not json`, ""},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := CollectionChainOrder([]byte(tc.vs)); got != tc.want {
+				t.Fatalf("CollectionChainOrder(%s) = %q, want %q", tc.vs, got, tc.want)
+			}
+		})
+	}
+}

internal/handlers/collections_rules_test.go

@@ -1,415 +0,0 @@
-package handlers
-
-import (
-	"testing"
-
-	"bookhoard/internal/database"
-
-	"github.com/jackc/pgx/v5/pgtype"
-	"github.com/stretchr/testify/assert"
-)
-
-// Test collection rule matching with various operators
-
-func TestEvaluateRule_Equals_StringMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "genre", "equals", "Science Fiction")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_Equals_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Fantasy", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "genre", "equals", "Science Fiction")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_NotEquals_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Fantasy", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "genre", "not_equals", "Science Fiction")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_NotEquals_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "genre", "not_equals", "Science Fiction")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_Contains_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Author: pgtype.Text{String: "Isaac Asimov", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "author", "contains", "asimov")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_Contains_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Author: pgtype.Text{String: "Isaac Asimov", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "author", "contains", "clarke")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_NotContains_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Author: pgtype.Text{String: "Isaac Asimov", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "author", "not_contains", "clarke")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_StartsWith_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Series: pgtype.Text{String: "Foundation", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "series", "starts_with", "Foun")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_StartsWith_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Series: pgtype.Text{String: "Foundation", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "series", "starts_with", "Robots")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_EndsWith_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Series: pgtype.Text{String: "Foundation", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "series", "ends_with", "tion")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_GreaterThan_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		CopyrightYear: pgtype.Int4{Int32: 2021, Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "copyright_year", "greater_than", "2000")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_GreaterThan_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		CopyrightYear: pgtype.Int4{Int32: 1999, Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "copyright_year", "greater_than", "2000")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_LessThan_Matches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		CopyrightYear: pgtype.Int4{Int32: 1999, Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "copyright_year", "less_than", "2000")
-	assert.True(t, result)
-}
-
-func TestEvaluateRule_LessThan_NoMatch(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		CopyrightYear: pgtype.Int4{Int32: 2021, Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "copyright_year", "less_than", "2000")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_NullField(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{Valid: false}, // NULL
-	}
-
-	result := handler.evaluateRule(item, "genre", "equals", "Science Fiction")
-	assert.False(t, result, "Should return false for NULL fields")
-}
-
-func TestCompareValues_CaseInsensitive(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("Science Fiction", "contains", "science fiction")
-	assert.True(t, result, "Contains should be case-insensitive")
-
-	result = handler.compareValues("Science Fiction", "contains", "SCIENCE FICTION")
-	assert.True(t, result)
-}
-
-func TestCompareValues_EmptyString(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("", "contains", "test")
-	assert.False(t, result, "Empty string should not contain anything")
-
-	result = handler.compareValues("test", "contains", "")
-	assert.True(t, result, "Non-empty string contains empty string")
-}
-
-func TestCompareValues_NumericEdgeCases(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("0", "greater_than", "-1")
-	assert.True(t, result)
-
-	result = handler.compareValues("9999", "less_than", "10000")
-	assert.True(t, result)
-}
-
-// Test rule checking with multiple rules
-
-func TestCheckRulesAgainstBook_MatchesFirstRule(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	rules := []map[string]interface{}{
-		{
-			"field":    "genre",
-			"operator": "equals",
-			"value":    "Science Fiction",
-		},
-		{
-			"field":    "author",
-			"operator": "contains",
-			"value":    "Asimov",
-		},
-	}
-
-	reason := handler.checkRulesAgainstBook(item, rules)
-	assert.NotEmpty(t, reason, "Should match at least one rule")
-	assert.Contains(t, reason, "genre")
-}
-
-func TestCheckRulesAgainstBook_MatchesSecondRule(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre:         pgtype.Text{String: "Fantasy", Valid: true},
-		Author:        pgtype.Text{String: "Isaac Asimov", Valid: true},
-		CopyrightYear: pgtype.Int4{Int32: 2021, Valid: true},
-	}
-
-	rules := []map[string]interface{}{
-		{
-			"field":    "genre",
-			"operator": "equals",
-			"value":    "Science Fiction",
-		},
-		{
-			"field":    "author",
-			"operator": "contains",
-			"value":    "Asimov",
-		},
-	}
-
-	reason := handler.checkRulesAgainstBook(item, rules)
-	assert.NotEmpty(t, reason, "Should match second rule")
-	assert.Contains(t, reason, "author")
-}
-
-func TestCheckRulesAgainstBook_NoMatches(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre:         pgtype.Text{String: "Mystery", Valid: true},
-		Author:        pgtype.Text{String: "Agatha Christie", Valid: true},
-		CopyrightYear: pgtype.Int4{Int32: 1950, Valid: true},
-	}
-
-	rules := []map[string]interface{}{
-		{
-			"field":    "genre",
-			"operator": "equals",
-			"value":    "Science Fiction",
-		},
-		{
-			"field":    "author",
-			"operator": "contains",
-			"value":    "Asimov",
-		},
-	}
-
-	reason := handler.checkRulesAgainstBook(item, rules)
-	assert.Empty(t, reason, "Should not match any rules")
-}
-
-func TestCheckRulesAgainstBook_EmptyRules(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	rules := []map[string]interface{}{}
-
-	reason := handler.checkRulesAgainstBook(item, rules)
-	assert.Empty(t, reason, "Empty rules should return empty reason")
-}
-
-// Test complex rule scenarios
-
-func TestComplexRule_MultipleConditions(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	// Book: "Foundation" by Isaac Asimov, Sci-Fi, 1951
-	item := database.MediaItems{
-		Title:         "Foundation",
-		Author:        pgtype.Text{String: "Isaac Asimov", Valid: true},
-		Genre:         pgtype.Text{String: "Science Fiction", Valid: true},
-		CopyrightYear: pgtype.Int4{Int32: 1951, Valid: true},
-		Series:        pgtype.Text{String: "Foundation", Valid: true},
-	}
-
-	tests := []struct {
-		name     string
-		field    string
-		operator string
-		value    string
-		expected bool
-	}{
-		{
-			name:     "Match genre exactly",
-			field:    "genre",
-			operator: "equals",
-			value:    "Science Fiction",
-			expected: true,
-		},
-		{
-			name:     "Match author substring",
-			field:    "author",
-			operator: "contains",
-			value:    "asimov",
-			expected: true,
-		},
-		{
-			name:     "Match year greater than",
-			field:    "copyright_year",
-			operator: "greater_than",
-			value:    "1950",
-			expected: true,
-		},
-		{
-			name:     "Match year less than",
-			field:    "copyright_year",
-			operator: "less_than",
-			value:    "2000",
-			expected: true,
-		},
-		{
-			name:     "Match series starts with",
-			field:    "series",
-			operator: "starts_with",
-			value:    "Found",
-			expected: true,
-		},
-		{
-			name:     "Match series ends with",
-			field:    "series",
-			operator: "ends_with",
-			value:    "tion",
-			expected: true,
-		},
-		{
-			name:     "No match for genre",
-			field:    "genre",
-			operator: "equals",
-			value:    "Fantasy",
-			expected: false,
-		},
-		{
-			name:     "No match for author",
-			field:    "author",
-			operator: "contains",
-			value:    "Tolkien",
-			expected: false,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			result := handler.evaluateRule(item, tt.field, tt.operator, tt.value)
-			assert.Equal(t, tt.expected, result)
-		})
-	}
-}
-
-// Test edge cases and error handling
-
-func TestEvaluateRule_InvalidOperator(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "genre", "invalid_operator", "Science Fiction")
-	assert.False(t, result, "Invalid operator should return false")
-}
-
-func TestEvaluateRule_NonExistentField(t *testing.T) {
-	handler := &CollectionHandler{}
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	result := handler.evaluateRule(item, "nonexistent_field", "equals", "value")
-	assert.False(t, result, "Non-existent field should return false")
-}
-
-func TestCompareValues_InvalidOperator(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("test", "invalid_op", "value")
-	assert.False(t, result, "Invalid comparison operator should return false")
-}
-
-func TestCompareValues_NumericConversion(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	// Valid numeric strings
-	result := handler.compareValues("100", "greater_than", "99")
-	assert.True(t, result)
-
-	result = handler.compareValues("99", "less_than", "100")
-	assert.True(t, result)
-
-	// Invalid numeric strings (should return false)
-	result = handler.compareValues("abc", "greater_than", "100")
-	assert.False(t, result, "Non-numeric string should not compare as greater than")
-
-	result = handler.compareValues("100", "greater_than", "xyz")
-	assert.False(t, result, "Non-numeric value should not allow comparison")
-}

internal/handlers/collections_test.go

@@ -3,95 +3,12 @@ package handlers
 import (
 	"testing"
 
-	"bookhoard/internal/database"
 	"bookhoard/internal/utils"
 
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/stretchr/testify/assert"
 )
 
-func TestCompareValues_Equals(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("Science Fiction", "equals", "Science Fiction")
-	assert.True(t, result)
-
-	result = handler.compareValues("Science Fiction", "equals", "Fantasy")
-	assert.False(t, result)
-}
-
-func TestCompareValues_Contains(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("Isaac Asimov", "contains", "asimov")
-	assert.True(t, result)
-
-	result = handler.compareValues("Isaac Asimov", "contains", "clarke")
-	assert.False(t, result)
-}
-
-func TestCompareValues_GreaterThan(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("2021", "greater_than", "2000")
-	assert.True(t, result)
-
-	result = handler.compareValues("1999", "greater_than", "2000")
-	assert.False(t, result)
-}
-
-func TestCompareValues_NotEquals(t *testing.T) {
-	handler := &CollectionHandler{}
-
-	result := handler.compareValues("Science Fiction", "not_equals", "Fantasy")
-	assert.True(t, result)
-
-	result = handler.compareValues("Science Fiction", "not_equals", "Science Fiction")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_Genre(t *testing.T) {
-	item := database.MediaItems{
-		Genre: pgtype.Text{String: "Science Fiction", Valid: true},
-	}
-
-	handler := &CollectionHandler{}
-
-	result := handler.evaluateRule(item, "genre", "equals", "Science Fiction")
-	assert.True(t, result)
-
-	result = handler.evaluateRule(item, "genre", "equals", "Fantasy")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_Author(t *testing.T) {
-	item := database.MediaItems{
-		Author: pgtype.Text{String: "Isaac Asimov", Valid: true},
-	}
-
-	handler := &CollectionHandler{}
-
-	result := handler.evaluateRule(item, "author", "contains", "asimov")
-	assert.True(t, result)
-
-	result = handler.evaluateRule(item, "author", "contains", "clarke")
-	assert.False(t, result)
-}
-
-func TestEvaluateRule_CopyrightYear(t *testing.T) {
-	item := database.MediaItems{
-		CopyrightYear: pgtype.Int4{Int32: 2021, Valid: true},
-	}
-
-	handler := &CollectionHandler{}
-
-	result := handler.evaluateRule(item, "copyright_year", "greater_than", "2000")
-	assert.True(t, result)
-
-	result = handler.evaluateRule(item, "copyright_year", "less_than", "2000")
-	assert.False(t, result)
-}
-
 func TestTextToString(t *testing.T) {
 	tests := []struct {
 		name     string

internal/handlers/dashboard.go

@@ -18,10 +18,10 @@ type DashboardHandler struct {
 	dashboardService *services.DashboardService
 }
 
-func NewDashboardHandler(db *database.Queries) *DashboardHandler {
+func NewDashboardHandler(db *database.Queries, search ...*services.SearchService) *DashboardHandler {
 	return &DashboardHandler{
 		db:               db,
-		dashboardService: services.NewDashboardService(db),
+		dashboardService: services.NewDashboardService(db, search...),
 	}
 }
 

internal/handlers/media.go

@@ -243,6 +243,36 @@ func NewMediaHandler(db *database.Queries, raw database.DBTX, libraryService *se
 
 // ExecuteSearch performs search and returns results with count
 // Public wrapper for shared search logic used by both JSON and HTML endpoints
+// SearchService exposes the shared search engine for SSR surfaces
+// that render a filter tree (the collection editor and bookshelf pages
+// resolve id labels through it — 2026-11-01).
+func (h *MediaHandler) SearchService() *services.SearchService { return h.searchService }
+
+// ResolveFilterLabels — GET /api/filter/labels?field=X&ids=a,b,c names
+// id-kind filter values straight from their source tables: the client
+// path that never touches a server render (applying a SAVED filter
+// from a cold bookshelf) would otherwise fall back to the suggest
+// facet, whose rows are media-constrained and label only the ids whose
+// media matches the tree's sibling rules (2026-11-01 feed repro).
+// Visibility/RLS ride the request identity, same as the SSR embed.
+func (h *MediaHandler) ResolveFilterLabels(c *echo.Context) error {
+	user := c.Get("user").(database.Users)
+	field := c.QueryParam("field")
+	if !services.IsIDValuedField(field) {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": "field is not an id-valued filter field"})
+	}
+	ids := services.ParseUUIDValues(strings.Split(c.QueryParam("ids"), ","))
+	if len(ids) == 0 {
+		return c.JSON(http.StatusBadRequest, map[string]string{"error": "ids required"})
+	}
+	if len(ids) > services.MaxResolveIDs {
+		ids = ids[:services.MaxResolveIDs]
+	}
+	labels := h.SearchService().ResolveFieldLabels(
+		c.Request().Context(), user.ID, field, ids)
+	return c.JSON(http.StatusOK, map[string]interface{}{"labels": labels})
+}
+
 func (h *MediaHandler) ExecuteSearch(ctx context.Context, params services.SearchParams) ([]database.SearchMediaItemsUnifiedRow, int, error) {
 	return h.searchService.ExecuteSearch(ctx, params)
 }
@@ -2559,6 +2589,13 @@ func ParseMediaSearchParams(c searchParamSource) services.SearchParams {
 		tree, err := services.ParseFilterTree(qf)
 		if err != nil {
 			params.FilterParseErr = err.Error()
+		} else if len(tree.Children) == 0 {
+			// A qf with no rules is not a browse query: the deep-link
+			// contract answers 400 (pinned). The empty root gained
+			// meaning only as a STORED collection seed — where the
+			// composers define it as matching nothing. As a query it
+			// would silently mean "everything", so reject at the wire.
+			params.FilterParseErr = "qf tree has no rules"
 		} else {
 			params.FilterTree = tree
 		}
@@ -3064,14 +3101,19 @@ func (mh *MediaHandler) GetAudioChapters(c *echo.Context) error {
 	// 1.0 IN the payload so the player applies it with zero extra round
 	// trips; default_playback_speed powers the dropdown's "(default)"
 	// marker. Speed is a preference, so this rides the authenticated
-	// user — anonymous readers just get 1.0.
+	// user — anonymous readers just get 1.0. The resume rewind rides
+	// the same user row (0 = exact resume).
 	playbackSpeed, defaultSpeed := 1.0, 1.0
+	resumeRewind := 0
 	if userID, ok := c.Get("user_id").(string); ok {
 		if userUUID, err := uuid.Parse(userID); err == nil {
 			userRow, err := mh.db.GetUser(c.Request().Context(), pgtype.UUID{Bytes: userUUID, Valid: true})
-			if err == nil && userRow.DefaultAudioSpeed > 0 {
+			if err == nil {
+				if userRow.DefaultAudioSpeed > 0 {
 					defaultSpeed = float64(userRow.DefaultAudioSpeed)
 				}
+				resumeRewind = int(userRow.AudioResumeRewindSeconds)
+			}
 			bookSpeed, err := mh.db.GetAudioPlaybackSpeed(c.Request().Context(), database.GetAudioPlaybackSpeedParams{
 				UserID:      pgtype.UUID{Bytes: userUUID, Valid: true},
 				MediaItemID: pgtype.UUID{Bytes: mediaUUID, Valid: true},
@@ -3093,6 +3135,7 @@ func (mh *MediaHandler) GetAudioChapters(c *echo.Context) error {
 		"tracks":                 tracks,
 		"playback_speed":         playbackSpeed,
 		"default_playback_speed": defaultSpeed,
+		"resume_rewind_seconds":  resumeRewind,
 	})
 }
 

internal/middleware/security_headers.go

@@ -41,10 +41,13 @@ func SecurityHeadersMiddleware() echo.MiddlewareFunc {
 			// the component and asserts the hash matches.
 			//
 			// style-src keeps 'unsafe-inline' for htmx-injected styles and
-			// Alpine :style attribute writes.
+			// Alpine :style attribute writes, plus blob: for the
+			// reader-generated stylesheets foliate injects at open time
+			// (blocked since the CSP migration — every /readers load
+			// logged a violation; selection/highlight styling rode on it).
 			// font/img blob: — the reader renders EPUB-embedded fonts and
 			// images from blob: URLs inside the foliate content frame.
-			c.Response().Header().Set("Content-Security-Policy", "default-src 'self'; script-src 'self' "+ScriptHashThemeFlashGuard+"; style-src 'self' 'unsafe-inline'; img-src 'self' data: https: blob:; font-src 'self' data: blob:; frame-src 'self' blob:")
+			c.Response().Header().Set("Content-Security-Policy", "default-src 'self'; script-src 'self' "+ScriptHashThemeFlashGuard+"; style-src 'self' 'unsafe-inline' blob:; img-src 'self' data: https: blob:; font-src 'self' data: blob:; frame-src 'self' blob:")
 			c.Response().Header().Set("Referrer-Policy", "strict-origin-when-cross-origin")
 			c.Response().Header().Set("Permissions-Policy", "geolocation=(), microphone=(), camera=()")
 

internal/router/collections.go

@@ -17,17 +17,16 @@ func registerCollectionsRoutes(cfg *Config) {
 	collections.GET("/:id/books", cfg.CollectionHandler.GetBookCollections)
 	collections.POST("/:id/books", cfg.CollectionHandler.AddBooks)
 	collections.PUT("/:id/items/order", cfg.CollectionHandler.ReorderItems)
+	// The chain's listening order lives ON the collection (plan §10 R2):
+	// merges into view_settings; the episode chain producer honors it.
+	collections.PUT("/:id/view-settings", cfg.CollectionHandler.SetCollectionChainOrder)
 	collections.DELETE("/:id/books/:bookId", cfg.CollectionHandler.RemoveBook)
 	collections.POST("/:id/books/bulk-remove", cfg.CollectionHandler.BulkRemoveBooks)
 	collections.POST("/bulk-add-books", cfg.CollectionHandler.HandleBulkAddBooks)
-	collections.POST("/test-rules", cfg.CollectionHandler.TestRules)
 	collections.POST("/preview", cfg.CollectionHandler.PreviewCollection)
 
 	// Smart collection rule CRUD (the rules builder persists through
 	// these; type follows rules presence — first rule = smart).
-	collections.POST("/:id/rules", cfg.CollectionHandler.AddRule)
-	collections.PUT("/:id/rules/:ruleId", cfg.CollectionHandler.UpdateRule)
-	collections.DELETE("/:id/rules/:ruleId", cfg.CollectionHandler.RemoveRule)
 
 	// Device shelf mapping routes
 	deviceCollections := protected.Group("/devices/:id/collections")

internal/router/frontend.go

@@ -409,9 +409,19 @@ func registerFrontendRoutes(cfg *Config) {
 			}
 		}
 
+		// SSR id-label resolution for a URL-carried qf tree: the drawer's
+		// value cells show NAMES from first paint instead of raw uuids
+		// (2026-11-01 — same story as the collection editor above).
+		labelsJSON := "{}"
+		if qfRaw := c.QueryParam("qf"); qfRaw != "" {
+			if t, perr := services.ParseFilterTree(qfRaw); perr == nil {
+				labelsJSON = resolveTreeLabelsJSON(c, cfg, user.ID, t)
+			}
+		}
+
 		var buf bytes.Buffer
 		bookInfoList = handlers.MarkActiveConflicts(c.Request().Context(), cfg.Queries, pgtype.UUID{Bytes: userUUID, Valid: true}, bookInfoList)
-		err = templates.BookShelf(user, libData, libraryID, errorMsg, savedFilters, bookInfoList, limit, offset, totalCount).Render(c.Request().Context(), &buf)
+		err = templates.BookShelf(user, libData, libraryID, errorMsg, savedFilters, bookInfoList, limit, offset, totalCount, labelsJSON).Render(c.Request().Context(), &buf)
 		if err != nil {
 			return err
 		}
@@ -562,13 +572,17 @@ func registerFrontendRoutes(cfg *Config) {
 		colData := make([]templates.CollectionData, len(collections))
 		colService := cfg.CollectionHandler.CollectionService()
 		for i, col := range collections {
-			isSmart := colService.IsSmartCollection(col.AutoAssignRules)
+			isSmart := services.IsCollectionSmart(col)
 			bookCount := 0
 			if isSmart {
-				matches, evalErr := colService.EvaluateSmartCollection(c.Request().Context(),
-					colService.ParseRules(col.AutoAssignRules), services.SmartEvalOptions{
+				matches, evalErr := colService.EvaluateSmartMembership(c.Request().Context(),
+					col, services.SmartEvalOptions{
 						LibraryID:    libScope,
 						VisibleIDs:   visibleIDs,
+						ViewerUserID: func() pgtype.UUID {
+							uid, _ := uuid.Parse(user.ID)
+							return uuidToPGType(uid)
+						}(),
 					})
 				if evalErr == nil {
 					bookCount = len(matches)
@@ -696,6 +710,35 @@ func registerFrontendRoutes(cfg *Config) {
 			return renderErrorPage(c, "System collections cannot have rules", "not_allowed")
 		}
 
+		// The editor's vocabulary + prefill (item 3.4): the unified
+		// builder in the collection's scope. A stored tree renders
+		// as-is. (The legacy rules-array preload retired 2026-10-31
+		// with the rules-array storage — the tree is the only form.)
+		scope := "books"
+		treeJSON := "{}"
+		var parsedTree *services.FilterTree
+		if len(collection.FilterTree) > 0 {
+			if t, perr := services.ParseFilterTree(string(collection.FilterTree)); perr == nil {
+				scope = t.FilterScope()
+				if b, merr := json.Marshal(t); merr == nil {
+					treeJSON = string(b)
+				}
+				parsedTree = t
+			}
+		}
+		fieldsPayload, merr := json.Marshal(services.FilterFieldsPayload(scope))
+		if merr != nil {
+			fieldsPayload = []byte("[]")
+		}
+		fieldsJSON := string(fieldsPayload)
+
+		// SSR id-label resolution: the stored tree arrives as bare ids;
+		// embed the id→name map so value cells render NAMES at first
+		// paint (2026-11-01: the client's pick-time cache dies with the
+		// page, and the quiet suggest fetch can't label ids whose media
+		// doesn't match the tree's sibling rules — raw uuids on refresh).
+		labelsJSON := resolveTreeLabelsJSON(c, cfg, user.ID, parsedTree)
+
 		colData := templates.CollectionData{
 			ID:          collectionID,
 			Name:        collection.Name,
@@ -703,11 +746,11 @@ func registerFrontendRoutes(cfg *Config) {
 			Color:       utils.PgTextString(collection.Color),
 			Icon:        utils.PgTextString(collection.Icon),
 			IsSystem:    collection.IsSystemCollection.Bool,
-			IsSmart:     cfg.CollectionHandler.CollectionService().IsSmartCollection(collection.AutoAssignRules),
+			IsSmart:     services.IsCollectionSmart(collection),
 		}
 
 		var buf bytes.Buffer
-		err = templates.CollectionRules(user, colData).Render(c.Request().Context(), &buf)
+		err = templates.CollectionRules(user, colData, fieldsJSON, treeJSON, scope, labelsJSON).Render(c.Request().Context(), &buf)
 		if err != nil {
 			return err
 		}

internal/router/helpers.go

@@ -2,6 +2,7 @@ package router
 
 import (
 	"context"
+	"encoding/json"
 	"log"
 	"net/http"
 	"net/url"
@@ -75,6 +76,7 @@ func getTemplateUserWithTheme(c *echo.Context, cfg *Config) (templates.User, err
 		LastName:          utils.PgTextString(userDB.LastName),
 		CreatedAt:         userDB.CreatedAt.Time,
 		DefaultAudioSpeed: float64(userDB.DefaultAudioSpeed),
+		AudioResumeRewind: int(userDB.AudioResumeRewindSeconds),
 		KeepScreenAwake:   userDB.KeepScreenAwake,
 		ShowPodcastsNav:   showPodcasts,
 	}, nil
@@ -270,6 +272,15 @@ func visibleLibraryIDsFor(c *echo.Context, cfg *Config) (map[string]bool, []pgty
 // collectionDataFromRow builds the template collection payload shared by
 // the collection detail page and its books-grid partial.
 func collectionDataFromRow(collection database.Collections, collectionID string, isSmart bool, bookCount int) templates.CollectionData {
+	chainOrder := ""
+	if len(collection.ViewSettings) > 0 {
+		var vs map[string]interface{}
+		if json.Unmarshal(collection.ViewSettings, &vs) == nil {
+			if s, ok := vs["chain_order"].(string); ok {
+				chainOrder = s
+			}
+		}
+	}
 	return templates.CollectionData{
 		ID:          collectionID,
 		Name:        collection.Name,
@@ -278,6 +289,7 @@ func collectionDataFromRow(collection database.Collections, collectionID string,
 		Icon:        collection.Icon.String,
 		IsSystem:    collection.IsSystemCollection.Bool,
 		IsSmart:     isSmart,
+		ChainOrder:  chainOrder,
 		BookCount:   bookCount,
 	}
 }
@@ -286,25 +298,72 @@ func collectionDataFromRow(collection database.Collections, collectionID string,
 // detail page and the books-grid partial: smart evaluation, a dashboard
 // query section, or manual membership. Callers resolve the scope:
 // libUUID/libScope/isAll/scoped per their own resolution rules.
+// resolveTreeLabelsJSON — SSR id-label resolution for a page-rendered
+// filter tree: walks the tree's id-kind rules, resolves uuids to display
+// names through the search engine (RLS/visibility ride the request
+// identity), and returns the JSON map embedded into the builder mount.
+// Best-effort: any failure yields "{}" and the page renders with the
+// client's fallbacks intact (2026-11-01, filter_labels.go for the WHY).
+func resolveTreeLabelsJSON(c *echo.Context, cfg *Config, userID string, tree *services.FilterTree) string {
+	if tree == nil || len(tree.Children) == 0 {
+		return "{}"
+	}
+	userUUID, err := uuid.Parse(userID)
+	if err != nil {
+		return "{}"
+	}
+	labels := cfg.MediaHandler.SearchService().FilterTreeLabels(
+		c.Request().Context(), pgtype.UUID{Bytes: userUUID, Valid: true}, tree)
+	if len(labels) == 0 {
+		return "{}"
+	}
+	b, merr := json.Marshal(labels)
+	if merr != nil {
+		return "{}"
+	}
+	return string(b)
+}
+
 func (cfg *Config) collectionBooksForScope(c *echo.Context, userUUID uuid.UUID, collUUID pgtype.UUID, collection database.Collections, collectionID string, libUUID pgtype.UUID, libScope pgtype.UUID, scoped bool, visibleIDs []pgtype.UUID) (books []handlers.BookInfo, isSmart bool, errCode string) {
 	colService := cfg.CollectionHandler.CollectionService()
-	isSmart = colService.IsSmartCollection(collection.AutoAssignRules)
+	isSmart = services.IsCollectionSmart(collection)
 	libTypes := handlers.LibraryTypeMap(c.Request().Context(), cfg.Queries)
 
 	if isSmart {
 		// Smart (dynamic) collection: membership is evaluated live —
-		// visible libraries, live items only, any enabled rule matches.
-		matches, evalErr := colService.EvaluateSmartCollection(c.Request().Context(),
-			colService.ParseRules(collection.AutoAssignRules), services.SmartEvalOptions{
+		// visible libraries, live items only, rules applied under the
+		// collection's match mode (item 2.4: any|all), with the
+		// viewer's progress feeding played/unplayed rules.
+		matches, evalErr := colService.EvaluateSmartMembership(c.Request().Context(),
+			collection, services.SmartEvalOptions{
 				LibraryID:    libScope,
 				VisibleIDs:   visibleIDs,
+				ViewerUserID: pgtype.UUID{Bytes: userUUID, Valid: true},
 			})
 		if evalErr != nil {
 			return nil, isSmart, "books_load_error"
 		}
+		// The visible order IS the play order: the curated listening
+		// order (view_settings.chain_order, §10 R2) re-orders the
+		// episode cards exactly as the sequence producer will play
+		// them, so the select's effect is visible and Play launches
+		// from the card the user sees first (2026-11-01 user report:
+		// the select changed nothing on the page).
+		services.OrderEpisodeMedia(matches, handlers.CollectionChainOrder(collection.ViewSettings))
 		books = handlers.BookCardsFromMediaItems(matches, libTypes)
+		// Episode-awareness for smart matches (item 2.5): episode cards
+		// carry the play affordance (chain via ?queue=collection:).
+		// BookCardsFromMediaItems preserves match order, so a parallel
+		// walk is enough; feed titles stay empty here (batch lookup is
+		// polish, not acceptance).
+		for i := range books {
+			if i < len(matches) && matches[i].Source == "podcast_episode" {
+				books[i].IsEpisode = true
+				books[i].DownloadState = matches[i].DownloadState
+			}
+		}
 	} else if collection.IsSystemCollection.Bool && collection.QueryType.Valid && collection.QueryType.String != "" && collection.QueryType.String != "filter" {
-		dashboardSvc := services.NewDashboardService(cfg.Queries)
+		dashboardSvc := services.NewDashboardService(cfg.Queries, cfg.CollectionHandler.CollectionService().Search())
 		sections, secErr := dashboardSvc.GetDashboardSections(c.Request().Context(), userUUID, libUUID, 1000, []string{}, []string{})
 		if secErr != nil {
 			return nil, isSmart, "books_load_error"
@@ -331,11 +390,17 @@ func (cfg *Config) collectionBooksForScope(c *echo.Context, userUUID uuid.UUID,
 				books = handlers.BookCardsFromCollectionDashRows(collItems, libTypes)
 			}
 		} else {
-			collItems, collErr := cfg.Queries.GetCollectionItems(c.Request().Context(), collUUID)
+			// Episode collections (plan item 2.3): the detailed query
+			// keeps RLS-invisible rows as Hidden cards (unsubscribed
+			// episodes render an "unavailable" hint) and tags episode
+			// rows with feed title + download state. Same position
+			// ordering; the legacy INNER-JOIN shape remains on the
+			// library-scoped branch above.
+			collItems, collErr := cfg.Queries.GetCollectionItemsDetailed(c.Request().Context(), collUUID)
 			if collErr != nil {
 				collItems = nil
 			}
-			books = handlers.BookCardsFromCollectionItemRows(collItems, libTypes)
+			books = handlers.BookCardsFromCollectionDetailed(collItems, libTypes)
 		}
 	}
 	return books, isSmart, ""

internal/router/podcast_page.go

@@ -381,6 +381,13 @@ func buildPodcastDetailData(c *echo.Context, cfg *Config, user templates.User, f
 }
 
 // podcastOrderForFeed reads the caller's order override (D5).
+//
+// The UNSET default is "reverse" (2026-11-01 user request): the platform
+// is audiobook-first and feed document order runs newest-first, so
+// native starts a book at its LAST chapter. This is the same per-feed
+// setting the Order dropdown shows — page list, player chain, and
+// download queue all resolve through it. Stored overrides are untouched:
+// anyone who picked an order keeps exactly what they picked.
 func podcastOrderForFeed(cfg *Config, c *echo.Context, feedID string) string {
 	user := handlers.MustGetAuthenticatedUser(c)
 	row, err := cfg.Queries.GetUserSettingByKey(c.Request().Context(), database.GetUserSettingByKeyParams{
@@ -388,16 +395,16 @@ func podcastOrderForFeed(cfg *Config, c *echo.Context, feedID string) string {
 		SettingKey: "podcast_order:" + feedID,
 	})
 	if err != nil {
-		return "native"
+		return "reverse"
 	}
 	var v struct {
 		Order string `json:"order"`
 	}
 	if err := json.Unmarshal(row, &v); err != nil {
-		return "native"
+		return "reverse"
 	}
 	if !services.ValidPodcastEpisodeOrder(v.Order) {
-		return "native"
+		return "reverse"
 	}
 	return v.Order
 }

internal/router/reader.go

@@ -10,6 +10,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"net/http"
+	"strings"
 
 	"github.com/google/uuid"
 	"github.com/jackc/pgx/v5/pgtype"
@@ -166,6 +167,17 @@ func registerReaderRoutes(cfg *Config) {
 // reads; non-subscribers never reach this path in the first place.
 func buildPodcastSequenceContext(c *echo.Context, cfg *Config, item *database.MediaItems, userID pgtype.UUID, libraryType string) *templates.PodcastSequenceContext {
 	ctx := c.Request().Context()
+	// Queue override (plan item 2.3): ?queue=collection:<id> plays the
+	// episode inside an Up Next collection chain. Absent/malformed/
+	// not-owned ids fall back to the feed queue — the reader page must
+	// never hard-fail on a stale link.
+	if q := c.QueryParam("queue"); strings.HasPrefix(q, "collection:") {
+		if collID, err := uuid.Parse(strings.TrimPrefix(q, "collection:")); err == nil {
+			if seq := buildCollectionSequenceContext(c, cfg, item, userID, collID); seq != nil {
+				return seq
+			}
+		}
+	}
 	eps, err := cfg.Queries.ListPodcastEpisodes(ctx, item.SourceFeedID)
 	if err != nil || len(eps) == 0 {
 		return nil
@@ -175,8 +187,11 @@ func buildPodcastSequenceContext(c *echo.Context, cfg *Config, item *database.Me
 		return nil
 	}
 
-	// Effective order override (D5): reader_settings KV.
-	order := "native"
+	// Effective order override (D5): reader_settings KV. UNSET defaults
+	// to "reverse" (2026-11-01: audiobook-first — native document order
+	// starts a book at its last chapter); the same default the podcast
+	// page's Order dropdown shows. Stored overrides are untouched.
+	order := "reverse"
 	if row, err := cfg.Queries.GetUserSettingByKey(ctx, database.GetUserSettingByKeyParams{
 		UserID:     userID,
 		SettingKey: "podcast_order:" + uuid.UUID(item.SourceFeedID.Bytes).String(),
@@ -233,6 +248,11 @@ func buildPodcastSequenceContext(c *echo.Context, cfg *Config, item *database.Me
 	seq := &templates.PodcastSequenceContext{
 		FeedURL:   "/podcasts/" + uuid.UUID(item.SourceFeedID.Bytes).String(),
 		FeedTitle: feed.Title,
+		// R2: this producer is the feed queue. The player's order
+		// control renders only for this source.
+		Source:       "feed",
+		FeedID:       uuid.UUID(item.SourceFeedID.Bytes).String(),
+		Order:        order,
 		EpisodeIndex: idx + 1,
 		IndexTotal:   len(ordered),
 	}
@@ -245,3 +265,170 @@ func buildPodcastSequenceContext(c *echo.Context, cfg *Config, item *database.Me
 	}
 	return seq
 }
+
+// buildCollectionSequenceContext is the COLLECTION queue producer (plan
+// item 2.3, §10 R2: same context shape, different owner). The queue is
+// the collection's ordered downloaded episodes — the collection's
+// order IS content (R1), so no feed-order override applies here and
+// the player's order control stays hidden (source=collection).
+// Ownership gates the chain: collections are user-scoped app state
+// (no RLS on the table), and a foreign or deleted collection id falls
+// back to the feed queue. Prev/next URLs carry ?queue=collection:<id>
+// so the chain survives hops; backToDetail lands on the collection.
+func buildCollectionSequenceContext(c *echo.Context, cfg *Config, item *database.MediaItems, userID pgtype.UUID, collID uuid.UUID) *templates.PodcastSequenceContext {
+	ctx := c.Request().Context()
+	owns, err := cfg.CollectionHandler.CollectionService().UserOwnsCollection(ctx, collID, uuid.UUID(userID.Bytes))
+	if err != nil || !owns {
+		return nil
+	}
+	coll, err := cfg.Queries.GetCollection(ctx, pgtype.UUID{Bytes: collID, Valid: true})
+	if err != nil {
+		return nil
+	}
+	// Smart collections compute their membership live (R1: computed
+	// order, never written back) — evaluate the rules for THIS viewer
+	// and chain the downloaded episode matches in native feed order
+	// (R3: every listening order routes through OrderEpisodes).
+	if services.IsCollectionSmart(coll) {
+		return buildSmartCollectionSequenceContext(c, cfg, item, userID, coll)
+	}
+	// Downloaded episodes in collection order (SQL orders; RLS scopes
+	// the join — unsubscribed feeds drop out and the chain skips them).
+	eps, err := cfg.Queries.GetCollectionEpisodesOrdered(ctx, pgtype.UUID{Bytes: collID, Valid: true})
+	if err != nil || len(eps) == 0 {
+		return nil
+	}
+	// The curated listening order applies to static episode playlists
+	// too (§10 R2): native/"" keeps the manual position order (the SQL
+	// order above); reverse flips it; oldest/newest re-key on
+	// publication date with feed position as the tiebreak.
+	switch order := handlers.CollectionChainOrder(coll.ViewSettings); order {
+	case "reverse":
+		for i, j := 0, len(eps)-1; i < j; i, j = i+1, j-1 {
+			eps[i], eps[j] = eps[j], eps[i]
+		}
+	case "oldest", "newest":
+		services.OrderEpisodes(eps, order,
+			func(e database.GetCollectionEpisodesOrderedRow) int32 { return e.FeedPosition.Int32 },
+			func(e database.GetCollectionEpisodesOrderedRow) string {
+				if e.DatePublished.Valid {
+					return e.DatePublished.Time.Format("2006-01-02")
+				}
+				return ""
+			})
+	}
+
+	currentID := uuid.UUID(item.ID.Bytes).String()
+	idx := -1
+	for i, ep := range eps {
+		if uuid.UUID(ep.ID.Bytes).String() == currentID {
+			idx = i
+			break
+		}
+	}
+	if idx < 0 {
+		return nil // current episode not downloaded (or not in sequence)
+	}
+
+	queueParam := "?queue=collection:" + collID.String()
+	seq := &templates.PodcastSequenceContext{
+		FeedURL:      "/collections/" + collID.String(),
+		FeedTitle:    coll.Name,
+		Source:       "collection",
+		EpisodeIndex: idx + 1,
+		IndexTotal:   len(eps),
+	}
+	if idx > 0 {
+		seq.PrevURL = "/readers/" + uuid.UUID(eps[idx-1].ID.Bytes).String() + queueParam
+	}
+	if idx < len(eps)-1 {
+		seq.NextURL = "/readers/" + uuid.UUID(eps[idx+1].ID.Bytes).String() + queueParam
+		seq.NextTitle = eps[idx+1].Title
+	}
+	return seq
+}
+
+// buildSmartCollectionSequenceContext chains a SMART collection's live
+// membership (plan item 2.5 acceptance: "Daily Fiction" → Play =
+// today's episodes back-to-back). The rules evaluate for the requesting
+// user (mode from the collection; family lens via the visible set);
+// episode matches that are downloaded chain in native feed order.
+// Books and un-downloaded matches never enter the queue (invariant 6).
+func buildSmartCollectionSequenceContext(c *echo.Context, cfg *Config, item *database.MediaItems, userID pgtype.UUID, coll database.Collections) *templates.PodcastSequenceContext {
+	ctx := c.Request().Context()
+	colService := cfg.CollectionHandler.CollectionService()
+	visibleIDs, err := cfg.CollectionHandler.UserVisibleLibraryIDs(c)
+	if err != nil {
+		visibleIDs = nil
+	}
+	matches, err := colService.EvaluateSmartMembership(ctx, coll, services.SmartEvalOptions{
+		VisibleIDs:   visibleIDs,
+		ViewerUserID: userID,
+	})
+	if err != nil {
+		return nil
+	}
+
+	type seqEp struct {
+		id    string
+		title string
+		date  string
+		pos   int32
+	}
+	ordered := make([]seqEp, 0, len(matches))
+	currentID := uuid.UUID(item.ID.Bytes).String()
+	for _, m := range matches {
+		if m.Source != "podcast_episode" || m.DownloadState != "downloaded" {
+			continue
+		}
+		date := ""
+		if m.DatePublished.Valid {
+			date = m.DatePublished.Time.Format("2006-01-02")
+		}
+		ordered = append(ordered, seqEp{
+			id:    uuid.UUID(m.ID.Bytes).String(),
+			title: m.Title,
+			date:  date,
+			pos:   m.FeedPosition.Int32,
+		})
+	}
+	if len(ordered) == 0 {
+		return nil
+	}
+	// Plan §10 R2: the collection's CURATED listening order (stored in
+	// view_settings.chain_order, set from the detail header) — not a
+	// player-side knob. "" / native / unknown all mean feed order.
+	services.OrderEpisodes(ordered, handlers.CollectionChainOrder(coll.ViewSettings),
+		func(e seqEp) int32 { return e.pos },
+		func(e seqEp) string { return e.date },
+	)
+
+	idx := -1
+	for i, ep := range ordered {
+		if ep.id == currentID {
+			idx = i
+			break
+		}
+	}
+	if idx < 0 {
+		return nil
+	}
+
+	collID := uuid.UUID(coll.ID.Bytes).String()
+	queueParam := "?queue=collection:" + collID
+	seq := &templates.PodcastSequenceContext{
+		FeedURL:      "/collections/" + collID,
+		FeedTitle:    coll.Name,
+		Source:       "collection",
+		EpisodeIndex: idx + 1,
+		IndexTotal:   len(ordered),
+	}
+	if idx > 0 {
+		seq.PrevURL = "/readers/" + ordered[idx-1].id + queueParam
+	}
+	if idx < len(ordered)-1 {
+		seq.NextURL = "/readers/" + ordered[idx+1].id + queueParam
+		seq.NextTitle = ordered[idx+1].title
+	}
+	return seq
+}

internal/router/search.go

@@ -16,6 +16,10 @@ func registerSearchRoutes(cfg *Config) {
 	// JWT middleware for protected routes
 	jwtMiddleware := createJWTMiddleware(cfg)
 	protected := e.Group("/api", jwtMiddleware)
+	// Filter label resolution (2026-11-01): names id-kind filter values
+	// from their source tables for trees the server didn't render (the
+	// cold saved-filter apply). Visibility/RLS ride the request identity.
+	protected.GET("/filter/labels", cfg.MediaHandler.ResolveFilterLabels)
 	// Search endpoint - returns JSON or HTML based on HX-Request header
 	protected.GET("/media-items/search", func(c *echo.Context) error {
 		// Check if HTMX request (expects HTML)
@@ -41,6 +45,24 @@ func handleSearchHTML(c *echo.Context, cfg *Config) error {
 	if !ok {
 		return c.String(http.StatusUnauthorized, "Unauthorized")
 	}
+
+	// Episode picker scope (plan item 2.3): ?scope=episodes&show_checkbox=true
+	// swaps the book cards for YOUR subscriptions' episodes — visibility
+	// is the RLS policy's job (D20), the Go side adds nothing. The books
+	// branch keeps its podcasts exclusion; this is the only door in.
+	if c.QueryParam("scope") == "episodes" && c.QueryParam("show_checkbox") == "true" {
+		eps, err := cfg.Queries.SearchEpisodesForPicker(c.Request().Context(), c.QueryParam("q"))
+		if err != nil {
+			log.Printf("Episode picker search error: %v", err)
+			return c.HTML(http.StatusInternalServerError, `<div style="color: red;">Search error</div>`)
+		}
+		var buf bytes.Buffer
+		if err := templates.EpisodePickerGrid(eps).Render(c.Request().Context(), &buf); err != nil {
+			return err
+		}
+		return c.HTML(http.StatusOK, buf.String())
+	}
+
 	// Extract filters via the SHARED parser (handlers.ParseMediaSearchParams)
 	// — the HTMX grid partial and the JSON endpoint can never disagree on
 	// which facet params exist or how they parse. (This branch previously

internal/services/collection_service.go

@@ -6,7 +6,9 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/google/uuid"
 	"github.com/jackc/pgx/v5"
@@ -30,24 +32,6 @@ type Rule struct {
 	Enabled *bool `json:"enabled,omitempty"`
 }
 
-// Known rule fields and operators — the rules builder UI and the
-// persisted JSONB documents must agree with this vocabulary.
-var ruleFields = map[string]bool{
-	"genre": true, "series": true, "author": true, "language": true,
-	"publisher": true, "copyright_year": true, "tags": true,
-}
-
-var ruleOperators = map[string]bool{
-	"equals": true, "not_equals": true, "contains": true, "not_contains": true,
-	"starts_with": true, "ends_with": true, "greater_than": true, "less_than": true,
-}
-
-// RuleValidationError reports a rule payload the evaluator could never
-// honor (unknown field/operator, empty value).
-type RuleValidationError struct{ Msg string }
-
-func (e *RuleValidationError) Error() string { return e.Msg }
-
 // RuleEvaluation represents the result of evaluating a rule
 type RuleEvaluation struct {
 	RuleID     string  `json:"rule_id"`
@@ -58,27 +42,28 @@ type RuleEvaluation struct {
 // CollectionService handles collection management
 type CollectionService struct {
 	db *database.Queries
+	// search powers the unified-engine path (item 3.2): tree-driven
+	// smart collections evaluate via ComposedLiveMedia. Optional —
+	// nil disables tree evaluation (legacy-only services, which keeps
+	// every existing constructor call site valid).
+	search *SearchService
 }
 
-// NewCollectionService creates a new collection service
-func NewCollectionService(db *database.Queries) *CollectionService {
-	return &CollectionService{
-		db: db,
-	}
-}
-
-// CreateCollection creates a new collection
-func (s *CollectionService) CreateCollection(ctx context.Context, userID uuid.UUID, name, description, color, icon string, autoAssignRules []Rule, viewSettings map[string]any) (database.Collections, error) {
-	// Convert rules to JSONB ([]byte)
-	var rulesJSON []byte
-	if len(autoAssignRules) > 0 {
-		var err error
-		rulesJSON, err = json.Marshal(autoAssignRules)
-		if err != nil {
-			return database.Collections{}, fmt.Errorf("failed to marshal auto-assign rules: %v", err)
+// NewCollectionService creates a new collection service. search is
+// optional (variadic for constructor compatibility) — required for
+// TREE-driven smart collections (item 3.2), ignored otherwise.
+func NewCollectionService(db *database.Queries, search ...*SearchService) *CollectionService {
+	svc := &CollectionService{db: db}
+	if len(search) > 0 {
+		svc.search = search[0]
 	}
+	return svc
 }
 
+// CreateCollection creates a new collection. filterTree (item 3.2), when
+// present, makes it smart — the qf engine is the only membership source
+// (the legacy rules-array storage retired 2026-10-31).
+func (s *CollectionService) CreateCollection(ctx context.Context, userID uuid.UUID, name, description, color, icon string, viewSettings map[string]any, showOnDashboard bool, filterTree []byte) (database.Collections, error) {
 	// Convert view settings to JSONB ([]byte)
 	var settingsJSON []byte
 	if len(viewSettings) > 0 {
@@ -95,8 +80,9 @@ func (s *CollectionService) CreateCollection(ctx context.Context, userID uuid.UU
 		Description:     pgtype.Text{String: description, Valid: description != ""},
 		Color:           pgtype.Text{String: color, Valid: color != ""},
 		Icon:            pgtype.Text{String: icon, Valid: icon != ""},
-		AutoAssignRules: rulesJSON,
 		ViewSettings:    settingsJSON,
+		FilterTree:      filterTree,
+		ShowOnDashboard: pgtype.Bool{Bool: showOnDashboard, Valid: true},
 	})
 
 	if err != nil {
@@ -132,14 +118,17 @@ func (s *CollectionService) GetUserCollections(ctx context.Context, userID uuid.
 	return collections, nil
 }
 
-// UpdateCollection updates a collection
-func (s *CollectionService) UpdateCollection(ctx context.Context, collectionID uuid.UUID, name, description, color, icon string, autoAssignRules []Rule, viewSettings map[string]any) (database.Collections, error) {
+// UpdateCollection rewrites the collection row. filterTree semantics:
+// nil = leave the stored tree untouched (forms don't send trees).
+func (s *CollectionService) UpdateCollection(ctx context.Context, collectionID uuid.UUID, name, description, color, icon string, viewSettings map[string]any, filterTree []byte) (database.Collections, error) {
 	// A2c §3.3: the edit form carries only the toggles it renders — merge
 	// them OVER the stored view_settings so provenance keys
 	// (imported_from_series) and anything else on the row survive.
-	if len(viewSettings) > 0 {
-		existing, err := s.db.GetCollection(ctx, pgtype.UUID{Bytes: collectionID, Valid: true})
-		if err == nil && len(existing.ViewSettings) > 0 {
+	if existing, err := s.db.GetCollection(ctx, pgtype.UUID{Bytes: collectionID, Valid: true}); err == nil {
+		if filterTree == nil {
+			filterTree = existing.FilterTree // nil = untouched (forms don't send trees)
+		}
+		if len(viewSettings) > 0 && len(existing.ViewSettings) > 0 {
 			var stored map[string]any
 			if json.Unmarshal(existing.ViewSettings, &stored) == nil {
 				merged := stored
@@ -149,18 +138,18 @@ func (s *CollectionService) UpdateCollection(ctx context.Context, collectionID u
 				viewSettings = merged
 			}
 		}
+		// Same convention as filterTree: a NIL view_settings payload
+		// means untouched — keep the stored doc. Without this, an edit
+		// that carries no settings wrote NULL over the row and silently
+		// dropped every stored key (chain_order, imported provenance);
+		// the 2026-10-31 chain-order test pinned exactly this clobber.
+		if viewSettings == nil && len(existing.ViewSettings) > 0 {
+			var stored map[string]any
+			if json.Unmarshal(existing.ViewSettings, &stored) == nil && len(stored) > 0 {
+				viewSettings = stored
 			}
-
-	// Convert rules to JSONB ([]byte)
-	var rulesJSON []byte
-	if len(autoAssignRules) > 0 {
-		var err error
-		rulesJSON, err = json.Marshal(autoAssignRules)
-		if err != nil {
-			return database.Collections{}, fmt.Errorf("failed to marshal auto-assign rules: %v", err)
 		}
 	}
-
 	// Convert view settings to JSONB ([]byte)
 	var settingsJSON []byte
 	if len(viewSettings) > 0 {
@@ -177,12 +166,12 @@ func (s *CollectionService) UpdateCollection(ctx context.Context, collectionID u
 		Description:  pgtype.Text{String: description, Valid: description != ""},
 		Color:        pgtype.Text{String: color, Valid: color != ""},
 		Icon:         pgtype.Text{String: icon, Valid: icon != ""},
-		AutoAssignRules: rulesJSON,
 		ViewSettings: settingsJSON,
+		FilterTree:   filterTree,
 	})
 
 	if err != nil {
-		return database.Collections{}, fmt.Errorf("failed to update collection: %v", err)
+		return database.Collections{}, fmt.Errorf("failed to update collection: %w", err)
 	}
 
 	return collection, nil
@@ -260,162 +249,7 @@ func (s *CollectionService) GetBookCollections(ctx context.Context, mediaItemID
 	}
 
 	return collections, nil
-}
-
-// ParseRules decodes a collection's auto_assign_rules JSONB into typed
-// rules. "null", empty, and malformed docs mean "no rules".
-func (s *CollectionService) ParseRules(raw []byte) []Rule {
-	if len(raw) == 0 {
-		return nil
-	}
-	var rules []Rule
-	if err := json.Unmarshal(raw, &rules); err != nil {
-		return nil
-	}
-	return rules
-}
-
-// IsSmartCollection derives the collection type: a non-empty ruleset
-// makes it SMART (live-matched), an empty/absent ruleset makes it STATIC
-// (stored collection_items links).
-func (s *CollectionService) IsSmartCollection(raw []byte) bool {
-	return len(s.ParseRules(raw)) > 0
-}
-
-// EnabledRules filters a ruleset down to the rules that participate in
-// live evaluation (absent enabled = enabled for backward compatibility).
-func (s *CollectionService) EnabledRules(rules []Rule) []Rule {
-	enabled := make([]Rule, 0, len(rules))
-	for _, rule := range rules {
-		if rule.Enabled == nil || *rule.Enabled {
-			enabled = append(enabled, rule)
-		}
-	}
-	return enabled
-}
-
-// validateRule checks a rule payload the evaluator will have to honor.
-func (s *CollectionService) validateRule(rule Rule) error {
-	if !ruleFields[rule.Field] {
-		return &RuleValidationError{Msg: "unknown rule field: " + rule.Field}
-	}
-	if !ruleOperators[rule.Operator] {
-		return &RuleValidationError{Msg: "unknown rule operator: " + rule.Operator}
-	}
-	if strings.TrimSpace(rule.Value) == "" {
-		return &RuleValidationError{Msg: "rule value is required"}
-	}
-	if rule.Priority < 0 || rule.Priority > 10 {
-		return &RuleValidationError{Msg: "priority must be between 0 and 10"}
-	}
-	return nil
-}
-
-// AddRule appends a rule to the collection's ruleset, generating an id
-// when the caller did not supply one. Adding the first rule CONVERTS a
-// static collection to smart (type is derived from rules presence).
-func (s *CollectionService) AddRule(ctx context.Context, collectionID uuid.UUID, rule Rule) (database.Collections, Rule, error) {
-	if err := s.validateRule(rule); err != nil {
-		return database.Collections{}, Rule{}, err
-	}
-
-	collection, err := s.GetCollection(ctx, collectionID)
-	if err != nil {
-		return database.Collections{}, Rule{}, err
-	}
-
-	rules := s.ParseRules(collection.AutoAssignRules)
-	if rule.ID == "" {
-		rule.ID = uuid.NewString()
-	}
-	rules = append(rules, rule)
-
-	rulesJSON, marshalErr := json.Marshal(rules)
-	if marshalErr != nil {
-		return database.Collections{}, Rule{}, fmt.Errorf("failed to marshal rules: %w", marshalErr)
-	}
-
-	updated, err := s.db.UpdateCollectionRulesJSON(ctx, database.UpdateCollectionRulesJSONParams{
-		ID:              pgtype.UUID{Bytes: collectionID, Valid: true},
-		AutoAssignRules: rulesJSON,
-	})
-	if err != nil {
-		return database.Collections{}, Rule{}, fmt.Errorf("failed to save rules: %w", err)
-	}
-	return updated, rule, nil
-}
-
-// SetRuleEnabled flips a single rule's enabled flag in place.
-func (s *CollectionService) SetRuleEnabled(ctx context.Context, collectionID uuid.UUID, ruleID string, enabled bool) (database.Collections, error) {
-	collection, err := s.GetCollection(ctx, collectionID)
-	if err != nil {
-		return database.Collections{}, err
-	}
-	rules := s.ParseRules(collection.AutoAssignRules)
-	found := false
-	for i := range rules {
-		if rules[i].ID == ruleID {
-			rules[i].Enabled = &enabled
-			found = true
-			break
-		}
-	}
-	if !found {
-		return database.Collections{}, fmt.Errorf("rule not found: %s", ruleID)
-	}
-
-	rulesJSON, marshalErr := json.Marshal(rules)
-	if marshalErr != nil {
-		return database.Collections{}, fmt.Errorf("failed to marshal rules: %w", marshalErr)
-	}
-
-	updated, err := s.db.UpdateCollectionRulesJSON(ctx, database.UpdateCollectionRulesJSONParams{
-		ID:              pgtype.UUID{Bytes: collectionID, Valid: true},
-		AutoAssignRules: rulesJSON,
-	})
-	if err != nil {
-		return database.Collections{}, fmt.Errorf("failed to save rules: %w", err)
-	}
-	return updated, nil
-}
-
-// RemoveRule deletes a single rule from the ruleset. Removing the LAST
-// rule converts the collection back to static (type is derived).
-func (s *CollectionService) RemoveRule(ctx context.Context, collectionID uuid.UUID, ruleID string) (database.Collections, error) {
-	collection, err := s.GetCollection(ctx, collectionID)
-	if err != nil {
-		return database.Collections{}, err
-	}
-	rules := s.ParseRules(collection.AutoAssignRules)
-	kept := make([]Rule, 0, len(rules))
-	found := false
-	for _, rule := range rules {
-		if rule.ID == ruleID {
-			found = true
-			continue
-		}
-		kept = append(kept, rule)
-	}
-	if !found {
-		return database.Collections{}, fmt.Errorf("rule not found: %s", ruleID)
-	}
-
-	rulesJSON, marshalErr := json.Marshal(kept)
-	if marshalErr != nil {
-		return database.Collections{}, fmt.Errorf("failed to marshal rules: %w", marshalErr)
-	}
-
-	updated, err := s.db.UpdateCollectionRulesJSON(ctx, database.UpdateCollectionRulesJSONParams{
-		ID:              pgtype.UUID{Bytes: collectionID, Valid: true},
-		AutoAssignRules: rulesJSON,
-	})
-	if err != nil {
-		return database.Collections{}, fmt.Errorf("failed to save rules: %w", err)
-	}
-	return updated, nil
-}
-
-// SmartEvalOptions scopes a smart collection's live evaluation.
+} // EnabledRules filters a ruleset down to the rules that participate in// validateRule checks a rule payload the evaluator will have to honor.// AddRule appends a rule to the collection's ruleset, generating an id// SetRuleEnabled flips a single rule's enabled flag in place.// RemoveRule deletes a single rule from the ruleset. Removing the LAST// SmartEvalOptions scopes a smart collection's live evaluation.
 type SmartEvalOptions struct {
 	// LibraryID, when valid, restricts matching to one library (the
 	// detail page's library switcher).
@@ -423,54 +257,98 @@ type SmartEvalOptions struct {
 	// VisibleIDs is the requesting user's visible-library set (family
 	// lens). Empty means no visible-library filter.
 	VisibleIDs []pgtype.UUID
+	// ViewerUserID scopes the candidate query's progress join — the
+	// played/unplayed rule is per-user. Zero UUID = no viewer (played
+	// rules then see "unplayed" for everything, honestly).
+	ViewerUserID pgtype.UUID
 }
 
-// EvaluateSmartCollection resolves a smart collection's membership LIVE:
-// every visible live book matched by at least one enabled rule is in.
-// No stored links are consulted — "truly dynamic," always current.
-func (s *CollectionService) EvaluateSmartCollection(ctx context.Context, rules []Rule, opts SmartEvalOptions) ([]database.MediaItems, error) {
-	enabled := s.EnabledRules(rules)
-	if len(enabled) == 0 {
-		return []database.MediaItems{}, nil
+// IsCollectionSmart is the ONE smart detection: a collection is smart
+// when it carries the unified filter tree (item 3.2). Every surface
+// routes through this. (The legacy rules-array branch retired
+// 2026-10-31 — the tree is the only smart storage.)
+func IsCollectionSmart(coll database.Collections) bool {
+	return len(coll.FilterTree) > 0
 }
 
-	var visibleArg []pgtype.UUID
-	if len(opts.VisibleIDs) > 0 {
-		visibleArg = opts.VisibleIDs
+// Search exposes the composed search engine the service was built with
+// (nil when the constructor omitted it) — callers composing secondary
+// services that evaluate trees (the dashboard service) pass it through.
+func (s *CollectionService) Search() *SearchService { return s.search }
+
+// IsCollectionSmartColl is IsCollectionSmart on the service handle —
+// the dashboard service composes this service and calls the detector
+// through it (no import cycle, one detection definition).
+func (s *CollectionService) IsCollectionSmartColl(coll database.Collections) bool {
+	return IsCollectionSmart(coll)
 }
-	items, err := s.db.GetVisibleLiveMediaForRules(ctx, database.GetVisibleLiveMediaForRulesParams{
-		LibraryID:         opts.LibraryID,
-		VisibleLibraryIds: visibleArg,
-	})
+
+// EvaluateSmartMembership is THE single smart evaluator (item 3.2):
+// tree-bearing collections evaluate through the unified filter engine.
+func (s *CollectionService) EvaluateSmartMembership(ctx context.Context, coll database.Collections, opts SmartEvalOptions) ([]database.MediaItems, error) {
+	return s.evaluateTreeMembership(ctx, coll, opts)
+}
+
+func (s *CollectionService) evaluateTreeMembership(ctx context.Context, coll database.Collections, opts SmartEvalOptions) ([]database.MediaItems, error) {
+	tree, err := ParseFilterTree(string(coll.FilterTree))
 	if err != nil {
-		return nil, fmt.Errorf("failed to load candidate books: %w", err)
+		return nil, fmt.Errorf("collection %s has an invalid filter tree: %v", coll.ID, err)
+	}
+	if s.search == nil {
+		return nil, errors.New("tree collections require the search service (constructor wiring)")
+	}
+	return s.search.ComposedLiveMedia(ctx, opts.ViewerUserID, opts.LibraryID, opts.VisibleIDs, tree)
 }
 
-	matches := make([]database.MediaItems, 0, len(items))
-	for _, item := range items {
-		if s.mediaItemMatchesAnyRule(item, enabled) {
-			matches = append(matches, item)
-		}
-	}
-	return matches, nil
+// episodeFinished is THE canonical finished definition (same predicate
+// as hide_finished): viewer progress percentage >= 0.999.
+func episodeFinished(viewerPercentage float64) bool {
+	return viewerPercentage >= 0.999
 }
 
-func (s *CollectionService) mediaItemMatchesAnyRule(item database.MediaItems, rules []Rule) bool {
-	for _, rule := range rules {
-		if s.mediaItemMatchesRule(item, rule) {
+// FieldMatches is THE single rule evaluator (the rules-builder preview
+// delegates here too — one vocabulary, one semantics). Episode/user-state
+// fields (feed/played/downloaded/published_within) evaluate directly;
+// everything else extracts a string and hits the generic comparator.
+func (s *CollectionService) FieldMatches(item database.MediaItems, viewerPercentage float64, field, operator, value string) bool {
+	switch field {
+	case "feed":
+		if !item.SourceFeedID.Valid {
+			return false
+		}
+		feedID := uuid.UUID(item.SourceFeedID.Bytes).String()
+		for _, raw := range strings.Split(value, ",") {
+			if strings.TrimSpace(raw) == feedID {
 				return true
 			}
 		}
 		return false
-}
-
-func (s *CollectionService) mediaItemMatchesRule(item database.MediaItems, rule Rule) bool {
-	if rule.Enabled != nil && !*rule.Enabled {
+	case "played":
+		wantPlayed := value == "true"
+		return episodeFinished(viewerPercentage) == wantPlayed
+	case "downloaded":
+		wantDownloaded := value == "true"
+		return (item.DownloadState == "downloaded") == wantDownloaded
+	case "published_within":
+		if !item.DatePublished.Valid {
 			return false
 		}
+		days, err := strconv.Atoi(strings.TrimSpace(value))
+		if err != nil || days < 0 {
+			return false
+		}
+		cutoff := time.Now().UTC().AddDate(0, 0, -days)
+		return item.DatePublished.Time.After(cutoff)
+	}
 
 	var fieldValue string
-	switch rule.Field {
+	switch field {
+	case "title":
+		fieldValue = item.Title
+	case "description":
+		if item.Description.Valid {
+			fieldValue = item.Description.String
+		}
 	case "genre":
 		if item.Genre.Valid {
 			fieldValue = item.Genre.String
@@ -501,11 +379,14 @@ func (s *CollectionService) mediaItemMatchesRule(item database.MediaItems, rule
 		}
 	}
 
-	return s.evaluateRule(fieldValue, rule.Operator, rule.Value)
+	return s.evaluateRule(fieldValue, operator, value)
 }
 
-// EvaluateRules evaluates auto-assign rules for a media item
-func (s *CollectionService) EvaluateRules(mediaItem database.MediaItems, rules []Rule) []RuleEvaluation {
+// EvaluateRules evaluates auto-assign rules for a media item — the
+// rules-builder preview's per-rule view. viewerPercentage is the
+// requesting user's progress for this item (0 = none), so played /
+// unplayed rules preview honestly (plan item 2.4).
+func (s *CollectionService) EvaluateRules(mediaItem database.MediaItems, viewerPercentage float64, rules []Rule) []RuleEvaluation {
 	var evaluations []RuleEvaluation
 
 	// Sort rules by priority (higher priority first)
@@ -527,40 +408,7 @@ func (s *CollectionService) EvaluateRules(mediaItem database.MediaItems, rules [
 		}
 		eval := RuleEvaluation{
 			RuleID:  rule.ID,
-			Matches: false,
-		}
-
-		switch rule.Field {
-		case "genre":
-			if mediaItem.Genre.Valid {
-				eval.Matches = s.evaluateRule(mediaItem.Genre.String, rule.Operator, rule.Value)
-			}
-		case "series":
-			if mediaItem.Series.Valid {
-				eval.Matches = s.evaluateRule(mediaItem.Series.String, rule.Operator, rule.Value)
-			}
-		case "author":
-			if mediaItem.Author.Valid {
-				eval.Matches = s.evaluateRule(mediaItem.Author.String, rule.Operator, rule.Value)
-			}
-		case "language":
-			if mediaItem.Language.Valid {
-				eval.Matches = s.evaluateRule(mediaItem.Language.String, rule.Operator, rule.Value)
-			}
-		case "publisher":
-			if mediaItem.Publisher.Valid {
-				eval.Matches = s.evaluateRule(mediaItem.Publisher.String, rule.Operator, rule.Value)
-			}
-		case "copyright_year":
-			if mediaItem.CopyrightYear.Valid {
-				yearStr := fmt.Sprintf("%d", mediaItem.CopyrightYear.Int32)
-				eval.Matches = s.evaluateRule(yearStr, rule.Operator, rule.Value)
-			}
-		case "tags":
-			if len(mediaItem.Tags) > 0 {
-				tagsStr := strings.Join(mediaItem.Tags, ", ")
-				eval.Matches = s.evaluateRule(tagsStr, rule.Operator, rule.Value)
-			}
+			Matches: s.FieldMatches(mediaItem, viewerPercentage, rule.Field, rule.Operator, rule.Value),
 		}
 
 		// Calculate confidence based on rule type and priority
@@ -654,6 +502,121 @@ func compareNumbers(a, b, op string) bool {
 }
 
 // CreateDeviceShelfMapping creates a shelf mapping for a device
+
+// ── Custom-section-builder adapter (2026-10-31) ──────────────────
+// The builder posts the legacy rules vocabulary; these convert it to a
+// qf tree at WRITE time — one-way upgrade, storage stays tree-only.
+// (The 2026-10-31 retirement deleted these as READ-time conversion;
+// the builder's tree migration revived them as the single write path.)
+
+// The builder's match_type select: "any" (OR) | "all" (AND).
+const (
+	RuleMatchAny = "any"
+	RuleMatchAll = "all"
+)
+
+// The builder posts the legacy rules vocabulary; these convert it to a
+// qf tree at WRITE time — one-way upgrade, storage stays tree-only.
+// (The 2026-10-31 retirement deleted these as READ-time conversion;
+// the builder's tree migration revived them as the single write path.)
+
+// RulesToFilterTree converts a legacy rules array + its match mode
+// into a qf tree so a collection upgrades to the unified engine at its
+// first edit (item 3.2): zero-rewrite back-compat at read, one-way
+// upgrade at write. Episode rules map mechanically (feed→in-list,
+// played/downloaded→booleans, published_within→published_date
+// within_days); legacy operators without an engine equivalent
+// (starts_with/ends_with) fall back to contains — documented, and the
+// operator labels stay in the rules docs.
+func RulesToFilterTree(rules []Rule, matchMode string) (*FilterTree, error) {
+	children := make([]FilterChild, 0, len(rules))
+	scope := ""
+	for _, r := range rules {
+		child, err := ruleToFilterChild(r)
+		if err != nil {
+			return nil, err
+		}
+		if episodeOnlyFields[r.Field] {
+			scope = ScopeEpisodes
+		}
+		children = append(children, child)
+	}
+	if len(children) == 0 {
+		return nil, fmt.Errorf("no rules to convert")
+	}
+	mode := RuleMatchAny
+	if matchMode == RuleMatchAll {
+		mode = RuleMatchAll
+	}
+	return &FilterTree{Scope: scope, Mode: mode, Children: children}, nil
+}
+
+func ruleToFilterChild(r Rule) (FilterChild, error) {
+	child := FilterChild{Field: r.Field}
+	switch r.Field {
+	case "feed":
+		// The rules format stores comma-separated feed IDs in one value.
+		child.Op = OpIn
+		child.Values = splitRuleValues(r.Value)
+		return child, nil
+	case "downloaded":
+		child.Op = isTrueFalse(r.Value == "true")
+		return child, nil
+	case "played":
+		child.Op = isTrueFalse(r.Value == "true")
+		return child, nil
+	case "published_within":
+		child.Field = "published_date"
+		child.Op = OpWithinDays
+		child.Values = []string{r.Value}
+		return child, nil
+	}
+	// Registry fields: legacy operators → engine operators.
+	switch r.Operator {
+	case "equals":
+		child.Op = OpIs
+	case "not_equals":
+		child.Op = OpIsNot
+	case "contains":
+		child.Op = OpContains
+	case "not_contains":
+		child.Op = OpNotContains
+	case "greater_than":
+		child.Op = OpAtLeast
+	case "less_than":
+		child.Op = OpAtMost
+	case "in":
+		child.Op = OpIn
+		child.Values = splitRuleValues(r.Value)
+	case "starts_with", "ends_with":
+		// No engine equivalent — contains is the honest nearest.
+		child.Op = OpContains
+	default:
+		return FilterChild{}, fmt.Errorf("legacy rule operator %q has no filter-engine equivalent", r.Operator)
+	}
+	child.Values = []string{r.Value}
+	return child, nil
+}
+
+func isTrueFalse(b bool) string {
+	if b {
+		return OpIsTrue
+	}
+	return OpIsFalse
+}
+
+func splitRuleValues(v string) []string {
+	parts := strings.Split(v, ",")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p != "" {
+			out = append(out, p)
+		}
+	}
+	return out
+}
+
 func (s *CollectionService) CreateDeviceShelfMapping(ctx context.Context, collectionID, deviceID uuid.UUID, deviceShelfName, syncDirection string) (database.DeviceShelfMappings, error) {
 	mapping, err := s.db.CreateDeviceShelfMapping(ctx, database.CreateDeviceShelfMappingParams{
 		CollectionID:    pgtype.UUID{Bytes: collectionID, Valid: true},

internal/services/collection_service_test.go

@@ -24,7 +24,7 @@ func TestEvaluateRules_Equality(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -56,7 +56,7 @@ func TestEvaluateRules_NoMatch(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -88,7 +88,7 @@ func TestEvaluateRules_Contains(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -128,7 +128,7 @@ func TestEvaluateRules_PriorityOrder(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 2 {
 		t.Fatalf("expected 2 evaluations, got %d", len(evaluations))
@@ -164,7 +164,7 @@ func TestEvaluateRules_CopyrightYear(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -190,7 +190,7 @@ func TestEvaluateRules_MissingField(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -218,7 +218,7 @@ func TestEvaluateRules_CaseInsensitive(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 1 {
 		t.Fatalf("expected 1 evaluation, got %d", len(evaluations))
@@ -253,7 +253,7 @@ func TestEvaluateRules_PriorityBoost(t *testing.T) {
 		},
 	}
 
-	evaluations := service.EvaluateRules(mediaItem, rules)
+	evaluations := service.EvaluateRules(mediaItem, 0, rules)
 
 	if len(evaluations) != 2 {
 		t.Fatalf("expected 2 evaluations, got %d", len(evaluations))
@@ -276,3 +276,8 @@ func TestEvaluateRules_PriorityBoost(t *testing.T) {
 		t.Errorf("expected higher priority rule to be first, got %s", evaluations[0].RuleID)
 	}
 }
+
+// TestRulesToFilterTree retired 2026-10-31 with the function it tested:
+// rules-array storage is gone, the filter tree is the only smart
+// membership. (Tests of deleted behavior are deleted — the asymmetry
+// rule.)

internal/services/dashboard_service.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"log"
 
 	"github.com/google/uuid"
 	"github.com/jackc/pgx/v5"
@@ -17,10 +18,10 @@ type DashboardService struct {
 	collectionService *CollectionService
 }
 
-func NewDashboardService(db *database.Queries) *DashboardService {
+func NewDashboardService(db *database.Queries, search ...*SearchService) *DashboardService {
 	return &DashboardService{
 		db:                db,
-		collectionService: NewCollectionService(db),
+		collectionService: NewCollectionService(db, search...),
 	}
 }
 
@@ -293,52 +294,44 @@ func (s *DashboardService) getUserCollectionItems(ctx context.Context, coll data
 
 	// The query filters excluded rows in SQL and embeds the media row,
 	// so the items are MediaItems as-is.
-	var manualNonExcluded []database.MediaItems
+	items := make([]database.MediaItems, 0, len(manualItems))
+	seen := make(map[uuid.UUID]bool, len(manualItems))
 	for _, row := range manualItems {
-		manualNonExcluded = append(manualNonExcluded, row.MediaItems)
+		id := uuid.UUID(row.MediaItems.ID.Bytes)
+		if !seen[id] {
+			items = append(items, row.MediaItems)
+			seen[id] = true
+		}
 	}
 
-	var autoItems []database.MediaItems
-	if len(coll.AutoAssignRules) > 0 {
-		var rules []Rule
-		if err := json.Unmarshal(coll.AutoAssignRules, &rules); err == nil && len(rules) > 0 {
-			allLibraryItems, err := s.db.GetLibraryItems(ctx, libraryID)
-			if err == nil {
-				for _, item := range allLibraryItems {
-					alreadyInCollection := false
-					for _, manualItem := range manualNonExcluded {
-						manualUUID := uuid.UUID(manualItem.ID.Bytes)
-						itemUUID := uuid.UUID(item.ID.Bytes)
-						if manualUUID == itemUUID {
-							alreadyInCollection = true
-							break
-						}
-					}
-					if alreadyInCollection {
-						continue
-					}
-
-					evaluations := s.collectionService.EvaluateRules(item, rules)
-					for _, eval := range evaluations {
-						if eval.Matches {
-							autoItems = append(autoItems, item)
-							break
-						}
-					}
+	// Smart sections (custom sections are rules + manual picks): the
+	// tree's LIVE membership rides along, scoped to the dashboard's
+	// active library and the viewing user (played rules are per-user).
+	// Evaluated items dedupe against the stored ones and the section
+	// caps at its limit. (Custom-section builder tree migration,
+	// 2026-10-31 — the rules-array branch this replaces evaluated the
+	// same way, minus the library scoping.)
+	if s.collectionService.IsCollectionSmartColl(coll) {
+		matches, evalErr := s.collectionService.EvaluateSmartMembership(ctx, coll, SmartEvalOptions{
+			LibraryID:    libraryID,
+			ViewerUserID: pgtype.UUID{Bytes: userID, Valid: true},
+		})
+		if evalErr != nil {
+			log.Printf("dashboard: smart section %s evaluation failed: %v", coll.Name, evalErr)
 		}
+		for _, m := range matches {
+			id := uuid.UUID(m.ID.Bytes)
+			if !seen[id] {
+				items = append(items, m)
+				seen[id] = true
 			}
 		}
 	}
 
-	var finalItems []database.MediaItems
-	finalItems = append(finalItems, manualNonExcluded...)
-	finalItems = append(finalItems, autoItems...)
-
-	if len(finalItems) > limit {
-		finalItems = finalItems[:limit]
+	if len(items) > limit {
+		items = items[:limit]
 	}
-
-	return finalItems, nil
+	return items, nil
 }
 
 func (s *DashboardService) GetDashboardPreferences(ctx context.Context, userID uuid.UUID, libraryID pgtype.UUID) (database.UserDashboardPreferences, error) {