docs(readme): reconcile quickstart block post-inline-bootstrap

The 12:21 sync (cf73eec2) made the README block a byte-copy of docker-compose.yml as it stood before the inline db-init landed; reconcile to the current file: initdb.d mount dropped, inline hBcescaped bootstrap, PGPORT in db-init env (DB_PORT is a variable in every connection path). Block verified byte-identical to docker-compose.yml; no secrets in either version (placeholders only).
feat(deploy): inline bootstrap into db-init — compose is the single source; DB_PORT everywhere
2026-10-29 13:12:36 -04:00 · 2026-10-29 13:06:16 -04:00 · 2026-10-29 12:21:07 -04:00 · 2026-10-29 12:21:03 -04:00 · 2026-10-29 12:05:56 -04:00 · 2026-10-29 12:01:37 -04:00
51 changed files with 1297 additions and 284 deletions
@@ -6,10 +6,18 @@
 # Generate with: openssl rand -hex 32
 JWT_SECRET=your-secure-jwt-secret-key-here

-# PostgreSQL database password
+# PostgreSQL database password (the bootstrap superuser account; kept
+# for container initialization — the app itself connects as bookhoard_srv)
 # Generate with: openssl rand -hex 16
 DBPASS=your-secure-database-password-here

+# Runtime database role password (bookhoard_srv — the non-superuser
+# account the app connects as; subject to RLS). Required for the app to
+# start. Consumed by the one-shot db-init service on every startup
+# (idempotent — creates/refreshes the role and its privileges).
+# Generate with: openssl rand -hex 16
+DBSRVPASS=your-secure-runtime-role-password-here
+
 # Networking: change a port if it conflicts on your host
 # Postgres port, host + container (e.g. another local DB already uses 5432)
 # DB_PORT=15432
@@ -106,30 +106,50 @@ inside quoted attribute values (gotcha #1 below), so dynamic
 ## Library visibility (family-lens rule) — ALWAYS apply

 Per-user library visibility (`library_visibility` table, default-ALLOW:
-every user sees every library unless an admin hides one) must be
-enforced on **every endpoint that returns media metadata or content**.
-It is NOT automatic — enforcement is per-handler.
+every user sees every library unless an admin hides one) is enforced by
+**Postgres RLS** — one source of truth: the labeled policy block in
+`database/schema/schema.sql` + the runtime role provisioned by the
+`db-init` compose service.

- **New endpoints that list/filter media or series** MUST filter by the
-  requesting user's visible-library set, and MUST reject an explicit
-  `library_id` outside that set with 403 (never silently pass).
- Helpers (do not hand-roll):
-  - `handlers`: `(*MediaHandler).visibleLibrarySet` /
-    `(*SeriesHandler).visibleLibrarySet` — membership map + id slice.
-  - `router`: `visibleLibraryIDsFor` — same for SSR routes.
-  - `resolveLibrary` (helpers.go) only honors requested library ids
-    inside the visible set.
- SQL pattern: `AND (sqlc.narg('visible_library_ids')::uuid[] IS NULL OR
-  library_id = ANY(sqlc.narg('visible_library_ids')::uuid[]))` — see
-  `ListMediaItems`, `GetDistinctSeries`, `SearchMediaItems`.
- Content endpoints (file bytes, page images) additionally gate per item
-  like `ReaderHandler.ensureItemVisible` / the download endpoint.
- Tests must pin visibility: hidden library → 403 on the endpoint, and
-  absent from unscoped aggregates.
+- **The engine is the enforcement.** Every `media_items` read is
+  filtered by the policy, which joins `library_visibility` on the
+  per-transaction GUC `app.user_id`. New media-listing queries need
+  NO visibility clause; new endpoints need NO visibility plumbing.
+- **The app declares identity; it never computes visibility.** All
+  sqlc statements run through `ScopedDB`
+  (`internal/database/scoped.go`), which declares `app.user_id` from
+  the stdlib request context. Three bridge sites put it there:
+  `router.go` JWT, `router.go` cookie/device, and
+  `middleware/device_auth.go` (KOReader/Kobo sync devices). A media
+  read on a detached `context.Background()` RAISES — thread the
+  request context or the acting identity (see conflicts.go and
+  analytics.go for the pattern).
+- **Background jobs declare the acting identity** before detached
+  work: scan jobs carry the library owner / first-admin fallback
+  (the job Context carries it — `ScanFolders` self-declares the
+  configured admin), the hash backfill runs as first admin. The sync
+  queue processor needs nothing (`sync_queue` is not RLS-governed).
+- **NEVER**: session-scoped `app.user_id` (pooled-connection identity
+  bleed); a bypass flag; connecting the app as the bootstrap
+  superuser (superusers bypass RLS unconditionally — `DATABASE_USER`
+  stays `bookhoard_srv`; the `db-init` compose service provisions the
+  role on every startup).
+- **schema.sql re-runs on EVERY boot** (executeSchema) — everything
+  added to it must be idempotent (`DROP .. IF EXISTS` + `CREATE`).
+  The migration tx declares a synthetic identity
+  (`schemaMigrationIdentity`) because the schema's own dedup block
+  reads `media_items`.
+- **Auditors**: `TestRlsInvariant` (API black-box — add new
+  media-returning surfaces to it; loosening requires a
+  docs/contract_pins.md entry) and the Playwright sweep (`tests/ui`,
+  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).

 History: 2026-10-13 (`431fec0`) the series/media listing surfaces
-leaked hidden libraries to any authenticated account — series endpoints
-were name-only across ALL libraries. Fixed; do not regress.
+leaked hidden libraries; **2026-10-29 enforcement moved to RLS** — the
+dashboard section queries had silently never carried the clauses,
+and the invariant test went red → green and stays as the auditor.

 ## Tests

@@ -21,160 +21,165 @@ A modern self-hosted media library system built with Go, PostgreSQL, HTMX, and T
 - **Podman** (recommended) or Docker
 - **5 minutes** of your time

-### Installation
+### Installation (no source checkout needed)
+
+Create a directory on the Docker host. You only need the compose file,
+an `.env`, and an `uploads` folder — everything else rides the published
+image.

 ```bash
-# 1. Clone the repository
-git clone https://git.linuxhg.com/Bookhoard/bookhoard.git
-cd bookhoard
-
-# 2. Set up environment
-cp .env.example .env
-# Generate secure passwords (no special characters):
-#   JWT_SECRET: openssl rand -hex 32
-#   DBPASS: openssl rand -hex 16
-# Edit .env with your generated values
-
-# 3. Pull images and start the server
-docker compose pull
-docker compose up -d
-# Optionally pin a specific version: set IMAGE_TAG in .env (defaults to "latest")
-
-# 4. Open your browser
-open http://localhost:8765
+mkdir bookhoard && cd bookhoard
+mkdir uploads
 ```

-The first user to register automatically becomes an admin.
+**`docker-compose.yml`** — copy this wholesale:

---
+```yaml
+services:
+  # PostgreSQL Database
+  db:
+    image: postgres:15-alpine
+    container_name: bookhoard_db
+    environment:
+      POSTGRES_DB: bookhoard
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: ${DBPASS}
+      # PGPORT makes Postgres listen on DB_PORT (kept in sync with the host mapping + app's DATABASE_PORT)
+      PGPORT: ${DB_PORT:-5432}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "127.0.0.1:${DB_PORT:-5432}:${DB_PORT:-5432}"
+      - "[::1]:${DB_PORT:-5432}:${DB_PORT:-5432}"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
+    env_file:
+      - .env

-## 📖 Key Features
+  # One-shot bootstrap: creates the bookhoard_srv runtime role and
+  # transfers object ownership to it (RLS prerequisite). Idempotent —
+  # safe on every startup; the app waits for its success. Passwords
+  # accept inline values or .env, like the rest of this file.
+  # NOTE: plpgsql $$ tags are written $$$$ — compose eats one dollar
+  # per pair before the container sees the SQL.
+  db-init:
+    image: postgres:15-alpine
+    container_name: bookhoard_db_init
+    environment:
+      PGHOST: db
+      PGPORT: ${DB_PORT:-5432}
+      PGUSER: postgres
+      PGDATABASE: bookhoard
+      PGPASSWORD: ${DBPASS}
+      DBSRVPASS: ${DBSRVPASS}
+    entrypoint: ["bash", "-c"]
+    command:
+      - |
+        set -e
+        : "${DBSRVPASS:?DBSRVPASS required in .env}"
+        psql -v ON_ERROR_STOP=1 -v role_pass="$DBSRVPASS" <<'EOSQL'
+        DO $$$$
+        BEGIN
+          IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'bookhoard_srv') THEN
+            CREATE ROLE bookhoard_srv LOGIN;
+          END IF;
+        END $$$$;
+        ALTER ROLE bookhoard_srv LOGIN PASSWORD :'role_pass';
+        DO $$$$
+        DECLARE r RECORD;
+        BEGIN
+          FOR r IN SELECT tablename FROM pg_tables WHERE schemaname = 'public' LOOP
+            EXECUTE format('ALTER TABLE public.%I OWNER TO bookhoard_srv', r.tablename);
+          END LOOP;
+          FOR r IN SELECT sequencename FROM pg_sequences WHERE schemaname = 'public' LOOP
+            EXECUTE format('ALTER SEQUENCE public.%I OWNER TO bookhoard_srv', r.sequencename);
+          END LOOP;
+          FOR r IN SELECT p.oid::regprocedure AS fn FROM pg_proc p
+                   JOIN pg_namespace n ON p.pronamespace = n.oid
+                   WHERE n.nspname = 'public' AND p.prokind = 'f' LOOP
+            EXECUTE format('ALTER FUNCTION %s OWNER TO bookhoard_srv', r.fn);
+          END LOOP;
+        END $$$$;
+        ALTER SCHEMA public OWNER TO bookhoard_srv;
+        ALTER DATABASE bookhoard OWNER TO bookhoard_srv;
+        EOSQL
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: "no"

-### Universal Cross-Platform Sync
+  # Bookhoard Application
+  # In production this image is pulled from the Gitea container registry.
+  # Override IMAGE_TAG in .env to pin or rollback a specific version (defaults to "latest").
+  app:
+    image: git.linuxhg.com/bookhoard/bookhoard:${IMAGE_TAG:-latest}
+    container_name: bookhoard
+    restart: unless-stopped
+    environment:
+      # Database Configuration
+      # Runtime role = bookhoard_srv (non-superuser OWNER, subject to RLS
+      # via FORCE). POSTGRES_USER above is the bootstrap account ONLY —
+      # the app must NEVER connect as it (superusers bypass RLS).
+      DATABASE_HOST: db
+      DATABASE_PORT: ${DB_PORT:-5432}
+      DATABASE_USER: bookhoard_srv
+      DATABASE_PASSWORD: ${DBSRVPASS}
+      DATABASE_NAME: bookhoard

- **Real-Time Progress**: Turn a page on your e-reader, see it in your browser
- **Format-Aware**: EPUB CFI, page numbers, percentages - all handled correctly
- **Offline Queue**: Changes sync when you reconnect, priority-processed
- **Conflict Resolution**: Smart handling when same book read on multiple devices
- **Book Matching**: Automatic matching using SHA-256, ISBN, UUID
- **OPDS Catalog**: Wireless book delivery to e-readers over Wi-Fi
- **Format Conversion**: On-the-fly EPUB→KEPUB conversion (for upcoming native Kobo support)
+      # Application Configuration
+      JWT_SECRET: ${JWT_SECRET}
+      SERVER_PORT: ${SERVER_PORT:-8765}
+      # IMPORTANT: Device sync requires full URL with protocol
+      # Local: http://localhost:8765
+      # Local network: http://192.168.1.X:8765
+      # Domain: https://bookhoard.example.com
+      BASE_URL: ${BASE_URL:-http://localhost:8765}
+      # Mark session cookies Secure; set true behind a TLS-terminating reverse proxy (Caddy/nginx/traefik)
+      COOKIE_SECURE: ${COOKIE_SECURE:-false}

-### Media Management
+      # Rate Limiting Configuration
+      TEST_MODE: ${TEST_MODE:-false}
+      RATE_LIMIT_ENABLED: ${RATE_LIMIT_ENABLED:-true}
+      REQUESTS_PER_MINUTE: ${REQUESTS_PER_MINUTE:-10}

- **Calibre Integration**: Automatic metadata import from Calibre `metadata.opf` sidecar files
- **Smart Search**: Partial matching with fuzzy search fallback for typos
- **Advanced Filtering**: Filter by author, series, genre, language, year, cover images
- **Dynamic Sorting**: By title, author, date added, published date, page count, series
- **Rich Metadata**: Title, author, series, publisher, ISBN, language, edition, tags
- **5-Star Ratings**: Half-star precision (1-10 scale)
- **Notes & Highlights**: Color-coded annotations with linked notes
- **Usage Analytics**: Reading statistics, device usage, popular books
+      # Conversion Service Configuration
+      BOOKHOARD_CONVERSION_CACHE_DIR: ${BOOKHOARD_CONVERSION_CACHE_DIR:-/app/cache/kepub}
+      BOOKHOARD_CONVERSION_TOOL: ${BOOKHOARD_CONVERSION_TOOL:-/usr/bin/kepubify}
+      BOOKHOARD_CONVERSION_CACHE_TTL: ${BOOKHOARD_CONVERSION_CACHE_TTL:-24h}

-### Smart Collections
+      # Library Maintenance
+      # Days an archived item (file missing from disk for 2+ scans) is kept,
+      # with its reading history, before library scans purge it for good.
+      # Set 0 to keep archived items until purged manually on the library admin page.
+      ARCHIVE_RETENTION_DAYS: ${ARCHIVE_RETENTION_DAYS:-90}

- **Auto-Assign Rules**: Automatically add books based on genre, author, series, tags, language, publisher, year
- **Device Shelf Mappings**: Map collections to device shelves (used by native Kobo sync, coming soon)
- **Test Before Creating**: Preview which books match your rules
+      # System timezone (fallback for server-side time operations)
+      TZ: ${TZ:-UTC}
+    ports:
+      - "${SERVER_PORT:-8765}:${SERVER_PORT:-8765}"
+    depends_on:
+      db:
+        condition: service_healthy
+      db-init:
+        condition: service_completed_successfully
+    volumes:
+      - ./uploads:/app/uploads
+      - bookhoard_conversion_cache:/app/cache/kepub
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:${SERVER_PORT:-8765}/health || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s

-### Library Organization
-
- **Multi-Library Support**: Ebooks, Comics, and Manga with type-specific file formats
- **Multiple Folders**: Add multiple scanning folders per library
- **Visibility Control**: Admins control which libraries each user can see
- **Background Scanning**: Auto-scan with per-user frequency settings
- **Watch Mode**: Real-time file system monitoring for instant updates
-
-### Security
-
- **JWT Authentication**: Short-lived access tokens (1 hour) with refresh tokens (7 days)
- **Strong Passwords**: Complexity requirements enforced (8+ chars, uppercase, lowercase, number, special)
- **Account Lockout**: 5 failed attempts = 15-minute lockout
- **Rate Limiting**: 10 requests/minute on auth endpoints
- **Input Validation**: Comprehensive validation on all inputs
- **No Passwords on Devices**: Web-based device approval with QR codes
-
---
-
-## 📚 Documentation
-
-### For Users & Self-Hosters
-
- **[docs/user/calibre-integration.md](docs/user/calibre-integration.md)** - Calibre library integration
- **[docs/user/sync-guide.md](docs/user/sync-guide.md)** - Understanding and using universal sync
- **[docs/user/devices/koreader-setup.md](docs/user/devices/koreader-setup.md)** - KOReader configuration
- **[docs/user/devices/kobo-setup.md](docs/user/devices/kobo-setup.md)** - Kobo e-reader configuration (coming soon)
- **[docs/user/user-guide.md](docs/user/user-guide.md)** - General user guide
- **[docs/user/admin-guide.md](docs/user/admin-guide.md)** - Admin features and configuration
- **[docs/user/settings-guide.md](docs/user/settings-guide.md)** - Settings and preferences
-
-### For Developers
-
- **[docs/developer/api/api-reference.md](docs/developer/api/api-reference.md)** - Complete API documentation
- **[docs/developer/android-app.md](docs/developer/android-app.md)** - Android app design & roadmap
- **[docs/contributing/development.md](docs/contributing/development.md)** - Development workflow
-
---
-
-## 🎯 Supported Devices
-
-| Platform         | Sync | OPDS | Status                                                        |
-| ---------------- | ---- | ---- | ------------------------------------------------------------- |
-| **Web Browser**  | ✅   | ✅   | Full support                                                  |
-| **KOReader**     | ✅   | ✅   | Runs on Kindle, Kobo, PocketBook hardware                     |
-| **Kobo Devices** | 🚧   | 🚧   | Native Kobo sync coming soon (use KOReader on Kobo today)     |
-| **Mobile Apps**  | 🚧   | 🚧   | Native Android app in design ([docs](docs/developer/android-app.md)); iOS later |
-
---
-
-## 💾 Network Storage (NAS / NFS / SMB)
-
-Libraries on network mounts are supported for everyday use — serving,
-reading, progress, and annotation sync all work over the mount — with a
-few behaviors worth knowing:
-
- **Outage hysteresis.** When the mount drops, files miss one scan
-  (marked missing, hidden) then a second (archived, still recoverable).
-  When the mount returns — by path or by identical content elsewhere —
-  everything is restored automatically: annotations, progress, and
-  covers included.
- **Retention purge.** Archived items older than `ARCHIVE_RETENTION_DAYS`
-  (default **90**, `0` = never auto-purge) are deleted for good by
-  library scans, annotations included. A NAS offline longer than the
-  retention window loses those books' metadata on return.
- **Deleting while the storage is down is refused.** Deleting a book
-  cascades its annotations, so deletes are rejected with a clear error
-  while the item's library storage is unreachable. Archive the item
-  instead, or retry when the mount is back.
- **Watch mode does not fire on network mounts** (inotify doesn't work
-  over NFS/SMB). The periodic scan is the change detector.
- **Latency** — folder reachability checks are cached ~30s; large
-  libraries on slow mounts will still feel slower than local disk.
-
---
-
-## 🛠 Tech Stack
-
- **Backend**: Go 1.25+ with Echo framework
- **Database**: PostgreSQL 15+ with pgx v5
- **Frontend**: HTMX + Tailwind CSS + Templ
- **Auth**: JWT tokens with bcrypt password hashing
- **Container**: Podman (Docker compatible)
-
---
-
-## 🧪 Testing
-
-```bash
-# Run all tests
-make test-all
-
-# Run integration tests (with test mode)
-make test-integration
-
-# Run Bruno OpenCollection YAML API tests
-npm install -g @usebruno/cli
-bruno run
+# Named Volumes
+volumes:
+  postgres_data:
+  bookhoard_conversion_cache:
 ```

 ---
@@ -41,7 +41,12 @@ func main() {
 	}
 	defer dbPool.Close()

-	queries := database.New(dbPool)
+	// The search service's raw DBTX path must ALSO carry the RLS
+	// identity — hand it the ScopedDB itself (a DBTX), never the bare
+	// pool, or search queries bypass the per-user GUC and raise under
+	// the policies.
+	scopedDB := database.NewScopedDB(dbPool)
+	queries := database.New(scopedDB)

 	// Initialize database schema
 	log.Println("🔧 Ensuring database schema is initialized...")
@@ -53,6 +58,9 @@ func main() {

 	// Load tunable settings from the DB into the registry. All values fall back
 	// to compiled defaults if a row is missing, so this never blocks startup.
+	// (Startup has no end-user identity; system_settings is not RLS-
+	// governed, and ScopedDB declares nothing when no identity exists —
+	// the engine only raises on governed tables.)
 	registry := database.NewSettingsRegistry(queries)
 	if err := registry.Load(ctx); err != nil {
 		log.Printf("⚠️ Could not load system settings (using defaults): %v", err)
@@ -165,7 +173,7 @@ func main() {
 	dashboardHandler := handlers.NewDashboardHandler(queries)
 	seriesHandler := handlers.NewSeriesHandler(queries)
 	filtersHandler := handlers.NewFiltersHandler(queries)
-	mediaHandler := handlers.NewMediaHandler(queries, dbPool, libraryService, progressService, annotationService)
+	mediaHandler := handlers.NewMediaHandler(queries, scopedDB, libraryService, progressService, annotationService)
 	matchingHandler := handlers.NewMatchingHandler(queries, connManager)
 	jobsHandler := handlers.NewJobsHandler(queries, worker)

@@ -289,7 +289,12 @@ func TestAudiobookTrackEndpoints(t *testing.T) {
 			resp, err := client.Do(req)
 			require.NoError(t, err)
 			_ = resp.Body.Close()
-			require.Equal(t, http.StatusForbidden, resp.StatusCode, "%s must be gated", path)
+			// PIN WIDENED for RLS (docs/contract_pins.md 2026-10-29): the
+			// handler's own Go-level gate still answers 403, but under
+			// engine-level visibility the hidden row is simply ABSENT —
+			// 404 is equally gated (no existence leak). Both accepted.
+			require.True(t, resp.StatusCode == http.StatusForbidden || resp.StatusCode == http.StatusNotFound,
+				"%s must be gated (403 or 404), got %d", path, resp.StatusCode)
 		}

 		// Restore visibility so harness cleanup ordering never sees a
@@ -2,7 +2,6 @@ package main

 import (
 	"bytes"
-	"context"
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
@@ -367,8 +366,6 @@ func TestPreviewCollection(t *testing.T) {
 }

 func createPreviewTestMediaItems(t *testing.T, db *database.Queries, libraryID string, count int) []string {
-	ctx := context.Background()
-
 	libUUID, err := uuid.Parse(libraryID)
 	require.NoError(t, err, "Should parse library ID")

@@ -379,7 +376,7 @@ func createPreviewTestMediaItems(t *testing.T, db *database.Queries, libraryID s
 	for i := 0; i < count; i++ {
 		genre := genres[i%len(genres)]

-		media, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		media, err := db.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
 			Title:     "Preview Test Book " + string(rune('A'+i)),
 			Authors:   []string{"Test Author " + string(rune('A'+i))},
@@ -108,7 +108,7 @@ func smartCreateLibraryAndBooks(t *testing.T, setup *TestServerSetup, userID uui
 	})

 	for title, genre := range titlesByGenre {
-		media, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		media, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
 			Title:     title,
 			Authors:   []string{"Smart Rule Author"},
@@ -113,7 +113,7 @@ func TestComicMetadataDisplay_ComicDetailPage(t *testing.T) {
 			params.AlternateInfo = []byte(v)
 		}

-		mediaItem, err := setup.DB.CreateMediaItem(ctx, params)
+		mediaItem, err := setup.DB.CreateMediaItem(seedCtx(), params)
 		require.NoError(t, err, "Should create media item")

 		mediaUUID, err := uuid.FromBytes(mediaItem.ID.Bytes[0:16])
@@ -596,7 +596,7 @@ func TestComicMetadataDisplay_ComicDetailPage(t *testing.T) {
 			Isbn:            pgtype.Text{String: "9781234567890", Valid: true},
 		}

-		mediaItem, err := setup.DB.CreateMediaItem(ctx, params)
+		mediaItem, err := setup.DB.CreateMediaItem(seedCtx(), params)
 		require.NoError(t, err, "Should create ebook")

 		mediaUUID, err := uuid.FromBytes(mediaItem.ID.Bytes[0:16])
@@ -740,7 +740,7 @@ func TestComicMetadataDisplay_AllFieldsTogether(t *testing.T) {
 	// Create a media item with ALL metadata fields populated
 	alternateInfoStr := `{"alternate_series":"Ultimate X-Men","alternate_number":1,"alternate_count":12}`
 	var mediaItem database.MediaItems
-	mediaItem, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	mediaItem, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID:        pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 		Title:            "Complete Metadata Comic",
 		FilePath:         "/test/complete.cbz",
@@ -25,7 +25,7 @@ func TestComicMetadataExtraction(t *testing.T) {
 		require.NoError(t, err, "Should parse library UUID")

 		// Insert test media item with full comic metadata
-		_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:        pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 			Title:            "Test Manga",
 			FilePath:         "/test/manga.cbz",
@@ -64,7 +64,7 @@ func TestComicMetadataExtraction(t *testing.T) {
 		parsedLibraryID, err := uuid.Parse(libraryID)
 		require.NoError(t, err, "Should parse library UUID")

-		_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:        pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 			Title:            "Test Comic",
 			FilePath:         "/test/comic.cbz",
@@ -94,7 +94,7 @@ func TestComicMetadataExtraction(t *testing.T) {
 		parsedLibraryID, err := uuid.Parse(libraryID)
 		require.NoError(t, err, "Should parse library UUID")

-		_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:        pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 			Title:            "Minimal Comic",
 			FilePath:         "/test/minimal.cbz",
@@ -136,7 +136,7 @@ func TestReadingDirectionAPI(t *testing.T) {
 	}

 	for _, tc := range testCases {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:        pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 			Title:            tc.title,
 			FilePath:         "/test/" + tc.title + ".cbz",
@@ -205,7 +205,7 @@ func TestUniversalMetadataFields(t *testing.T) {
 	require.NoError(t, err, "Should parse ebook library UUID")

 	t.Run("Comic with universal fields", func(t *testing.T) {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:       pgtype.UUID{Bytes: parsedComicLibraryID, Valid: true},
 			Title:           "Comic with Universal Metadata",
 			FilePath:        "/test/comic.cbz",
@@ -231,7 +231,7 @@ func TestUniversalMetadataFields(t *testing.T) {
 	})

 	t.Run("Ebook with universal fields", func(t *testing.T) {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:       pgtype.UUID{Bytes: parsedEbookLibraryID, Valid: true},
 			Title:           "Ebook with Universal Metadata",
 			FilePath:        "/test/book.epub",
@@ -270,7 +270,7 @@ func TestComicSpecificFields(t *testing.T) {
 	t.Run("Alternate series info as JSONB", func(t *testing.T) {
 		alternateInfo := `{"alternate_series":"Ultimate X-Men","alternate_number":1,"alternate_count":12}`

-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:       pgtype.UUID{Bytes: parsedLibraryID, Valid: true},
 			Title:           "X-Men with Alternate Series",
 			FilePath:        "/test/xmen.cbz",
@@ -120,7 +120,7 @@ func createContractFixture(t *testing.T, setup *TestServerSetup) contractFixture

 	seriesName := fmt.Sprintf("Test Contract Series %d", time.Now().UnixNano())
 	itemTitle := fmt.Sprintf("Test Contract Item %d", time.Now().UnixNano())
-	media, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	media, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
 		Title:     itemTitle,
 		Authors:   []string{"Test Contract Author"},
@@ -89,7 +89,7 @@ func TestFacetRegistryParamsFilter(t *testing.T) {
 		if mutate != nil {
 			mutate(&p)
 		}
-		_, err := setup.DB.CreateMediaItem(ctx, p)
+		_, err := setup.DB.CreateMediaItem(seedCtx(), p)
 		require.NoError(t, err, "create %s", title)
 	}

@@ -194,7 +194,7 @@ func TestFacetsEndpoint(t *testing.T) {

 	// Two items share the genre; one carries the language + narrator.
 	for _, title := range []string{"Facet List One", "Facet List Two"} {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: library.ID,
 			Title:     title,
 			Authors:   []string{"Facet Listing Author"},
@@ -206,7 +206,7 @@ func TestFacetsEndpoint(t *testing.T) {
 		})
 		require.NoError(t, err)
 	}
-	_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: library.ID,
 		Title:     "Facet List Three",
 		Authors:   []string{"Facet Listing Author"},
@@ -318,7 +318,6 @@ func mergeParams(base, extra url.Values) url.Values {
 // "Baen Books") cross-match at 0.3+ (session gotcha).
 func facetFixtureBooks(t *testing.T, setup *TestServerSetup, libraryID pgtype.UUID, prefix string) {
 	t.Helper()
-	ctx := context.Background()
 	books := []struct {
 		title     string
 		genre     string
@@ -329,7 +328,7 @@ func facetFixtureBooks(t *testing.T, setup *TestServerSetup, libraryID pgtype.UU
 		{prefix + " Gamma", "history", "Pinecrest"},
 	}
 	for _, b := range books {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:  libraryID,
 			Title:      b.title,
 			Authors:    []string{prefix + " Author"},
@@ -426,7 +425,7 @@ func TestFacetCountsUnderFilters(t *testing.T) {
 	facetFixtureBooks(t, setup, library.ID, "Counts")
 	// A book in the HIDDEN library: distinctive values that must never
 	// surface for the regular user.
-	_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID:  hiddenLib.ID,
 		Title:      "Counts Hidden Book",
 		Authors:    []string{"Counts Secret Author"},
@@ -559,7 +558,7 @@ func TestFieldValuesAllLibraries(t *testing.T) {
 		id   pgtype.UUID
 		name string
 	}{{visibleLib.ID, "Visible"}, {hiddenLib.ID, "Hidden"}} {
-		_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: lib.id,
 			Title:     fmt.Sprintf("Field Values %s Book", lib.name),
 			Authors:   []string{"Verdana Scribe"},
@@ -156,7 +156,7 @@ func builderFixtureLib(t *testing.T, setup *TestServerSetup, userID uuid.UUID, n
 			}
 			books[i].TagsSearch = lowered
 		}
-		_, err := setup.DB.CreateMediaItem(ctx, books[i])
+		_, err := setup.DB.CreateMediaItem(seedCtx(), books[i])
 		require.NoError(t, err, "create %s", books[i].Title)
 	}
 	return libUUID, library.ID
@@ -267,11 +267,9 @@ func TestFilterComposedSemantics(t *testing.T) {
 	assert.Len(t, got, 4, "mime_type is")

 	// Series full membership: the alternate_info series matches too.
-	ctx := context.Background()
-	_, err := setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`UPDATE media_items SET alternate_info = '{"alternate_series":"Quill Chronicles"}'::jsonb
 		 WHERE title = $1`, "Sem Fen")
-	require.NoError(t, err)
 	got = titles(qfAll(qfRule("series", "contains", "Quill Chron")))
 	assert.Equal(t, []string{"Sem Fen"}, got, "series matches alternate_info membership")
 	got = titles(qfAll(qfRule("series", "is", "Quill Chronicles")))
@@ -327,43 +325,34 @@ func TestFilterUserRelativeFields(t *testing.T) {
 	// Reader A: reading Tide (50%), finished Stone, rated Tide 8,
 	// reviewed Fen, noted on Tide ("the catharsis scene"), highlighted
 	// Stone, time on Wick (2h), collection holding Tide.
-	_, err := setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO reading_progress (media_item_id, user_id, percentage, last_read_at) VALUES ($1,$2,0.5, now()), ($3,$4,1.0, now())`,
 		tideID, aID, stoneID, aID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO reading_progress (media_item_id, user_id, percentage, last_read_at) VALUES ($1,$2,1.0, now())`,
 		tideID, bID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO media_ratings (media_item_id, user_id, rating) VALUES ($1,$2,8)`, tideID, aID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO media_ratings (media_item_id, user_id, rating) VALUES ($1,$2,3)`, tideID, bID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO media_reviews (media_item_id, user_id, review) VALUES ($1,$2,'splendid')`, fenID, aID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO media_notes (media_item_id, user_id, content) VALUES ($1,$2,'remember the catharsis scene')`, tideID, aID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO media_highlights (media_item_id, user_id, selection_text) VALUES ($1,$2,'the dark forest road')`, stoneID, aID)
-	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO reading_history (user_id, media_item_id, time_spent_seconds, pages_read) VALUES ($1,$2,7200,120), ($3,$4,600,30)`,
 		aID, wickID, aID, tideID)
-	require.NoError(t, err)

 	var collID pgtype.UUID
-	err = setup.DBPool.QueryRow(ctx,
+	err := setup.DBPool.QueryRow(context.Background(),
 		`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) })
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO collection_items (collection_id, media_item_id) VALUES ($1,$2)`, collID, tideID)
-	require.NoError(t, err)

 	titlesFor := func(token string, qf string) []string {
 		p := url.Values{"library_id": {libUUID.String()}, "qf": {qf}}
@@ -445,7 +434,7 @@ func TestFilterSuggestionsUnderRules(t *testing.T) {

 	// Add a second distinct author+genre pair (trigram-disjoint).
 	ctx := context.Background()
-	_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: pgtype.UUID{Bytes: libUUID, Valid: true},
 		Title:     "Sug Dune",
 		Authors:   []string{"Zephyrine Hale"},
@@ -572,18 +561,17 @@ 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(ctx,
+	err = setup.DBPool.QueryRow(context.Background(),
 		`INSERT INTO collections (user_id, name) VALUES ($1, $2) RETURNING id`,
 		pgtype.UUID{Bytes: [16]byte(userA), Valid: true},
 		fmt.Sprintf("Test Builder Sug Coll %d", time.Now().UnixNano())).Scan(&collID)
 	require.NoError(t, err)
 	t.Cleanup(func() { _ = setup.DB.DeleteCollection(ctx, collID) })
 	var tideID pgtype.UUID
-	err = setup.DBPool.QueryRow(ctx, `SELECT id FROM media_items WHERE title = $1`, "Sug Tide").Scan(&tideID)
+	err = setup.DBPool.QueryRow(context.Background(), `SELECT id FROM media_items WHERE title = $1`, "Sug Tide").Scan(&tideID)
 	require.NoError(t, err)
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO collection_items (collection_id, media_item_id) VALUES ($1, $2)`, collID, tideID)
-	require.NoError(t, err)

 	status, results = suggest("collection", " ", "")
 	require.Equal(t, http.StatusOK, status)
@@ -632,7 +620,7 @@ func TestFilterFamilyLens(t *testing.T) {
 		id    pgtype.UUID
 		title string
 	}{{visibleID, "Lens Vis Book"}, {hiddenID, "Lens Hid Book"}} {
-		_, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: lib.id, Title: lib.title,
 			Authors:  []string{"Lens Secret Author"},
 			FilePath: fmt.Sprintf("/tmp/builder/%s-%d.epub", lib.title, time.Now().UnixNano()),
@@ -641,10 +629,9 @@ func TestFilterFamilyLens(t *testing.T) {
 		})
 		require.NoError(t, err)
 	}
-	_, err = setup.DBPool.Exec(ctx,
+	seedExec(t, setup.DBPool,
 		`INSERT INTO library_visibility (library_id, user_id, is_visible) VALUES ($1, $2, false)`,
 		hiddenID, pgtype.UUID{Bytes: [16]byte(userID), Valid: true})
-	require.NoError(t, err)

 	search := func(params url.Values) (int, []map[string]interface{}) {
 		return qfSearch(t, setup, setup.RegularToken, params)
@@ -85,7 +85,7 @@ func (s *OwnershipAndAdminTestSuite) createItemViaDB(withFolder bool) (itemID, l
 		}
 	}

-	item, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	item, err := db.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: library.ID,
 		Title:     "Ownership Suite Item",
 		Authors:   []string{"Suite Author"},
@@ -269,7 +269,7 @@ func (s *OwnershipAndAdminTestSuite) TestDelete_StorageDownRefused() {
 	})
 	require.NoError(s.T(), err)

-	item, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	item, err := db.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: library.ID,
 		Title:     "Offline Storage Item",
 		FilePath:  "offline.epub",
@@ -134,7 +134,7 @@ func TestManuallyEditedFilter(t *testing.T) {
 	t.Cleanup(func() { deleteLibraries(t, setup, libID) })

 	createBook := func(path string) pgtype.UUID {
-		created, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		created, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: libID,
 			Title:     path,
 			Authors:   []string{},
@@ -48,7 +48,7 @@ func createTestQueueItem(t *testing.T, db *database.Queries, userID uuid.UUID) (
 	require.NoError(t, err, "Should create library")

 	// 4. Create media item
-	mediaItem, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	mediaItem, err := db.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: library.ID,
 		Title:     "Test Book for Queue",
 		Authors:   []string{"Test Author"},
@@ -0,0 +1,283 @@
+package main
+
+// rls_visibility_test.go — the PERMANENT black-box auditor for per-user
+// library visibility (the "family lens").
+//
+// The one sentence it asserts, in the user's language:
+//
+//	A user with a library hidden sees NOTHING from that library, on
+//	ANY media-returning surface — while an admin still sees it (the
+//	hide is per-user, never global).
+//
+// Implementation-agnostic on purpose: it speaks only HTTP + response
+// bodies, so it stays valid regardless of HOW enforcement is done
+// (per-query visible_library_ids clauses today, Postgres RLS in the
+// RLS rollout, anything tomorrow). It is the auditor that makes a
+// forgotten surface a failing test instead of a silent leak.
+//
+// Red/green history: RED at introduction on the dashboard-section and
+// collection-detail (mobile View All) surfaces, whose queries never
+// carried the visible_library_ids clause; GREEN once enforcement
+// covers every surface (plan:
+// ~/.opencode/plan/server-rls-library-visibility.md).
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"bookhoard/internal/database"
+)
+
+// uuidInBody finds candidate collection ids in a dashboard-sections
+// body so the View-All detail endpoint can be probed without coupling
+// the test to unrelated ids in the body.
+
+func TestRlsInvariant(t *testing.T) {
+	setup := setupTestServer(t)
+	ctx := context.Background()
+
+	adminToken := setup.Token
+	regularToken := setup.RegularToken
+	regularID := getRegularUserID(t, setup.DB)
+
+	// Unique markers: one for the hidden library's whole subtree
+	// (library name + both book titles — a single string that must
+	// appear NOWHERE), one for the visible control book.
+	hiddenMarker := fmt.Sprintf("RLSHIDE%s", uuid.New().String()[:8])
+	controlMarker := fmt.Sprintf("RLSCTRL%s", uuid.New().String()[:8])
+
+	libType, err := setup.DB.GetLibraryTypeByName(ctx, "ebooks")
+	require.NoError(t, err, "ebooks library type should exist")
+
+	createLib := func(name string) database.Libraries {
+		lib, cerr := setup.DB.CreateLibrary(ctx, database.CreateLibraryParams{
+			Name:             name,
+			Description:      pgtype.Text{String: "rls invariant test library", Valid: true},
+			LibraryTypeID:    libType.ID,
+			CreatedByAdminID: pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
+		})
+		require.NoError(t, cerr, "create library %q", name)
+		// Deleting the library cascades its media_items AND its
+		// library_visibility rows (FK ON DELETE CASCADE) — one cleanup
+		// covers the whole subtree.
+		t.Cleanup(func() { _ = setup.DB.DeleteLibrary(ctx, lib.ID) })
+		return lib
+	}
+	libH := createLib("RLS Test Hidden Library " + hiddenMarker)
+	libV := createLib("RLS Test Visible Library " + controlMarker)
+
+	createBook := func(libraryID pgtype.UUID, title string) {
+		_, cerr := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
+			LibraryID: libraryID,
+			Title:     title,
+			Authors:   []string{"RLS Invariant Author"},
+			FilePath:  fmt.Sprintf("/tmp/rls-invariant/%s-%s.epub", title, uuid.New().String()),
+			FileSize:  pgtype.Int8{Int64: 1024, Valid: true},
+			MimeType:  pgtype.Text{String: "application/epub+zip", Valid: true},
+		})
+		require.NoError(t, cerr, "create book %q", title)
+	}
+	createBook(libH.ID, hiddenMarker+" Hidden Alpha")
+	createBook(libH.ID, hiddenMarker+" Hidden Beta")
+	createBook(libV.ID, controlMarker+" Visible Gamma")
+
+	// Hide libH from the REGULAR user — the same row the admin
+	// visibility UI writes (harness idiom: SetLibraryVisibility).
+	_, err = setup.DB.SetLibraryVisibility(ctx, database.SetLibraryVisibilityParams{
+		UserID:    pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
+		LibraryID: libH.ID,
+		IsVisible: false,
+	})
+	require.NoError(t, err, "hide libH from regular user")
+
+	// OPDS device owned by the REGULAR user (OPDS identity = device owner).
+	opdsToken := "dev_" + uuid.New().String()
+	device, err := setup.DB.CreateDevice(ctx, database.CreateDeviceParams{
+		UserID:               pgtype.UUID{Bytes: [16]byte(regularID), Valid: true},
+		DeviceName:           "RLS Invariant OPDS Device",
+		DeviceType:           "koreader",
+		DeviceIdentifier:     "rls-invariant-" + uuid.New().String()[:8],
+		AuthToken:            opdsToken,
+		SyncEnabled:          pgtype.Bool{Bool: true, Valid: true},
+		AutoSync:             pgtype.Bool{Bool: true, Valid: true},
+		SyncFrequencyMinutes: pgtype.Int4{Int32: 60, Valid: true},
+		DeviceMetadata:       []byte("{}"),
+	})
+	require.NoError(t, err, "create OPDS device for regular user")
+	t.Cleanup(func() { _ = setup.DB.DeleteDevice(ctx, device.ID) })
+
+	rlsGet := func(token, path string) (int, string) {
+		req, _ := http.NewRequest(http.MethodGet, setup.Server.URL+path, nil)
+		if token != "" {
+			req.Header.Set("Authorization", "Bearer "+token)
+		}
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err, "GET %s", path)
+		defer func() { _ = resp.Body.Close() }()
+		var sb strings.Builder
+		buf := make([]byte, 32*1024)
+		for {
+			n, err := resp.Body.Read(buf)
+			if n > 0 {
+				sb.Write(buf[:n])
+			}
+			if err != nil {
+				break
+			}
+		}
+		return resp.StatusCode, sb.String()
+	}
+
+	// Surfaces that render media TITLES (books appear by name).
+	titleSurfaces := []struct {
+		name string
+		path string
+		auth string
+	}{
+		{"media-items list", "/api/media-items?limit=500", regularToken},
+		{"dashboard sections", "/api/dashboard/sections?limit=500", regularToken},
+		{"opds catalog", "/opds/devices/" + device.ID.String() + "/catalog", opdsToken},
+	}
+	// Surfaces that return media-adjacent data (counts, series names,
+	// aggregates) — hidden-subtree leakage would show up as marker
+	// series names / inventory rows, not book titles.
+	aggregateSurfaces := []struct {
+		name string
+		path string
+		auth string
+	}{
+		{"collections list", "/api/collections", regularToken},
+		{"series list", "/api/series", regularToken},
+		{"stats summary", "/api/stats/summary", regularToken},
+		{"stats library-usage", "/api/stats/library-usage", regularToken},
+	}
+
+	t.Run("restricted_user_hidden_library_absent_everywhere", func(t *testing.T) {
+		for _, s := range titleSurfaces {
+			t.Run(s.name, func(t *testing.T) {
+				code, body := rlsGet(s.auth, s.path)
+				require.Equal(t, http.StatusOK, code, "surface %s must be authorized (a 401 here is a harness bug, not a pass)", s.path)
+				// THE INVARIANT: nothing from the hidden subtree —
+				// neither its books nor the library itself.
+				assert.NotContains(t, body, hiddenMarker,
+					"LEAK: hidden library content surfaced on %s", s.path)
+				// Control: the visible library's book IS present —
+				// guards against false greens from empty/anonymous
+				// responses.
+				if s.name != "opds catalog" { // root catalog may nest books behind library subsections
+					assert.Contains(t, body, controlMarker,
+						"control book missing from %s — response is not listing media (false-green guard)", s.path)
+				}
+			})
+		}
+		for _, s := range aggregateSurfaces {
+			t.Run(s.name, func(t *testing.T) {
+				code, body := rlsGet(s.auth, s.path)
+				require.Equal(t, http.StatusOK, code, "surface %s must be authorized", s.path)
+				assert.NotContains(t, body, hiddenMarker,
+					"LEAK: hidden library content surfaced on %s", s.path)
+			})
+		}
+	})
+
+	t.Run("restricted_user_dashboard_scoped_to_hidden_library", func(t *testing.T) {
+		code, body := rlsGet(regularToken, "/api/dashboard/sections?library_id="+uuid.UUID(libH.ID.Bytes).String())
+		assert.NotContains(t, body, hiddenMarker,
+			"LEAK: dashboard scoped to the hidden library leaked its content (status %d)", code)
+	})
+
+	t.Run("restricted_user_collection_detail_view_all", func(t *testing.T) {
+		// The mobile View All path: GET /api/collections/{id} for every
+		// collection the dashboard references (system sections included).
+		// Structured decode — probe exactly the collection ids the
+		// sections payload declares (its own contract field), not
+		// whatever UUIDs happen to appear in the body.
+		_, sectionsBody := rlsGet(regularToken, "/api/dashboard/sections?limit=500")
+		var sections struct {
+			Sections []struct {
+				CollectionID string `json:"collection_id"`
+			} `json:"sections"`
+		}
+		require.NoError(t, json.Unmarshal([]byte(sectionsBody), &sections),
+			"dashboard sections should decode; body: %s", sectionsBody)
+		seen := map[string]bool{}
+		for _, sec := range sections.Sections {
+			id := sec.CollectionID
+			if id == "" || seen[id] {
+				continue
+			}
+			seen[id] = true
+			code, body := rlsGet(regularToken, "/api/collections/"+id)
+			if code != http.StatusOK {
+				continue // not visible to this user — absence trivially holds
+			}
+			assert.NotContains(t, body, hiddenMarker,
+				"LEAK: collection detail %s (View All surface) returned hidden-library content", id)
+		}
+	})
+
+	t.Run("restricted_user_explicit_hidden_library_scoped_requests_rejected", func(t *testing.T) {
+		// Pinned contract (AGENTS.md family-lens rule): naming a hidden
+		// library explicitly is a 403, never a silent pass.
+		libID := uuid.UUID(libH.ID.Bytes).String()
+		for _, path := range []string{
+			"/api/media-items?library_id=" + libID,
+			"/api/series?library_id=" + libID,
+			"/api/series/books?library_id=" + libID + "&name=RLS",
+		} {
+			code, body := rlsGet(regularToken, path)
+			assert.Equal(t, http.StatusForbidden, code,
+				"scoped request %s must be 403 for a hidden library (got %d)", path, code)
+			assert.NotContains(t, body, hiddenMarker)
+		}
+	})
+
+	t.Run("admin_still_sees_hidden_library_user_scoped_not_global", func(t *testing.T) {
+		// The hide is PER-USER: an admin (no hidden rows) must still see
+		// everything. This catches "fixing" the leak by hiding the
+		// library globally.
+		for _, s := range []struct{ name, path string }{
+			{"media-items list", "/api/media-items?limit=500"},
+			{"dashboard sections", "/api/dashboard/sections?limit=500"},
+		} {
+			t.Run(s.name, func(t *testing.T) {
+				code, body := rlsGet(adminToken, s.path)
+				require.Equal(t, http.StatusOK, code)
+				assert.Contains(t, body, hiddenMarker,
+					"admin must still see the hidden library on %s (hide is user-scoped)", s.path)
+			})
+		}
+		t.Run("opds catalog", func(t *testing.T) {
+			// OPDS identity = device owner; an ADMIN-owned device sees all.
+			adminDevToken := "dev_" + uuid.New().String()
+			adminID := getTestUserID(t, setup.DB)
+			adminDevice, derr := setup.DB.CreateDevice(ctx, database.CreateDeviceParams{
+				UserID:               pgtype.UUID{Bytes: [16]byte(adminID), Valid: true},
+				DeviceName:           "RLS Invariant Admin OPDS Device",
+				DeviceType:           "koreader",
+				DeviceIdentifier:     "rls-invariant-admin-" + uuid.New().String()[:8],
+				AuthToken:            adminDevToken,
+				SyncEnabled:          pgtype.Bool{Bool: true, Valid: true},
+				AutoSync:             pgtype.Bool{Bool: true, Valid: true},
+				SyncFrequencyMinutes: pgtype.Int4{Int32: 60, Valid: true},
+				DeviceMetadata:       []byte("{}"),
+			})
+			require.NoError(t, derr, "create OPDS device for admin")
+			t.Cleanup(func() { _ = setup.DB.DeleteDevice(ctx, adminDevice.ID) })
+
+			code, body := rlsGet(adminDevToken, "/opds/devices/"+adminDevice.ID.String()+"/catalog")
+			require.Equal(t, http.StatusOK, code)
+			assert.Contains(t, body, hiddenMarker,
+				"admin's OPDS catalog must still expose the hidden library (user-scoped hide)")
+		})
+	})
+}
@@ -78,7 +78,7 @@ func TestScanStateBulkLoad(t *testing.T) {
 	require.NoError(t, os.WriteFile(apiFile, []byte("api made book content"), 0644))
 	apiStat, err := os.Stat(apiFile)
 	require.NoError(t, err)
-	created, err := setup.DB.CreateMediaItem(context.Background(), database.CreateMediaItemParams{
+	created, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: libID,
 		Title:     "API Made Book",
 		Authors:   []string{"API Author"},
@@ -253,7 +253,7 @@ func TestReadingStatsSummary(t *testing.T) {
 			media, err = setup.DB.GetMediaItem(ctx, uuidToPGType(uuid.MustParse(reuseMediaID[0])))
 			require.NoError(t, err, "reuse seeded media item")
 		} else {
-			media, err = setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+			media, err = setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 				LibraryID: pgtype.UUID{Bytes: [16]byte(libUUID), Valid: true},
 				Title:     title,
 				FilePath:  fmt.Sprintf("/tmp/stats-%s-%d.epub", title, time.Now().UnixNano()),
@@ -448,7 +448,7 @@ func TestReadingStatsWeekLibraryScope(t *testing.T) {
 	libB := uuid.MustParse(createLibraryDirect(t, setup.DB, userID, fmt.Sprintf("Test Scope LibB %d", time.Now().UnixNano()), "ebooks"))

 	seed := func(lib uuid.UUID, title string, daysAgo int, minutes int32) {
-		media, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		media, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID: pgtype.UUID{Bytes: [16]byte(lib), Valid: true},
 			Title:     title,
 			FilePath:  fmt.Sprintf("/tmp/%s-%d.epub", title, time.Now().UnixNano()),
@@ -526,7 +526,6 @@ func TestReadingStatsWeekLibraryScope(t *testing.T) {
 func TestLibraryUsageStats(t *testing.T) {
 	setup := setupTestServer(t)
 	userID := getRegularUserID(t, setup.DB)
-	ctx := context.Background()

 	ebooksID := uuid.MustParse(createLibraryDirect(t, setup.DB, userID,
 		fmt.Sprintf("Test Usage Ebooks %d", time.Now().UnixNano()), "ebooks"))
@@ -541,7 +540,7 @@ func TestLibraryUsageStats(t *testing.T) {
 		if durationSeconds > 0 {
 			audioMeta = []byte(fmt.Sprintf(`{"duration_seconds":%d,"chapters":[]}`, durationSeconds))
 		}
-		media, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		media, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:       pgtype.UUID{Bytes: [16]byte(lib), Valid: true},
 			Title:           title,
 			Authors:         []string{author},
@@ -689,7 +688,6 @@ func TestLibraryUsageStats(t *testing.T) {
 func TestLibraryUsageStats_Visibility(t *testing.T) {
 	setup := setupTestServer(t)
 	userID := getRegularUserID(t, setup.DB)
-	ctx := context.Background()

 	visibleID := uuid.MustParse(createLibraryDirect(t, setup.DB, userID,
 		fmt.Sprintf("Test Usage Visible %d", time.Now().UnixNano()), "ebooks"))
@@ -697,7 +695,7 @@ func TestLibraryUsageStats_Visibility(t *testing.T) {
 		fmt.Sprintf("Test Usage Hidden %d", time.Now().UnixNano()), "ebooks"))

 	seed := func(lib uuid.UUID, title string, size int64) {
-		_, err := setup.DB.CreateMediaItem(ctx, database.CreateMediaItemParams{
+		_, err := setup.DB.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 			LibraryID:       pgtype.UUID{Bytes: [16]byte(lib), Valid: true},
 			Title:           title,
 			FilePath:        fmt.Sprintf("/tmp/usage-vis-%s-%d.bin", title, time.Now().UnixNano()),
@@ -3,6 +3,7 @@ package main
 import (
 	"bookhoard/internal/config"
 	"bookhoard/internal/database"
+	"bookhoard/internal/rls"
 	"context"
 	"net/http"
 	"net/http/httptest"
@@ -10,6 +11,7 @@ import (
 	"time"

 	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/stretchr/testify/assert"
@@ -26,11 +28,16 @@ func setupSyncTestDB(t *testing.T) *database.Queries {
 	dbConfig, err := pgxpool.ParseConfig(dbURL)
 	require.NoError(t, err, "Failed to parse database URL")
 	dbConfig.MaxConns = 1
+	// Harness-only session identity (plan §5): see setupTestServer.
+	dbConfig.BeforeAcquire = func(ctx context.Context, conn *pgx.Conn) bool {
+		_, err := conn.Exec(ctx, `SELECT set_config('app.user_id', $1, false)`, rls.SeedIdentity.String())
+		return err == nil
+	}

 	dbPool, err := pgxpool.NewWithConfig(ctx, dbConfig)
 	require.NoError(t, err, "Failed to connect to test database")

-	db := database.New(dbPool)
+	db := database.New(database.NewSeedDB(dbPool))
 	t.Cleanup(func() {
 		// Scoped wipes ONLY: reading_history now carries real captured
 		// sessions for the shared dev accounts, so a table-wide DELETE
@@ -90,9 +97,8 @@ func createSyncTestDevice(t *testing.T, db *database.Queries, userID pgtype.UUID
 }

 func createSyncTestMedia(t *testing.T, db *database.Queries, libraryID pgtype.UUID) pgtype.UUID {
-	ctx := context.Background()

-	media, err := db.CreateMediaItem(ctx, database.CreateMediaItemParams{
+	media, err := db.CreateMediaItem(seedCtx(), database.CreateMediaItemParams{
 		LibraryID: libraryID,
 		Title:     "Sync Test Book",
 		Authors:   []string{"Test Author"},
@@ -6,6 +6,7 @@ import (
 	"bookhoard/internal/handlers"
 	"bookhoard/internal/middleware"
 	ratelimit "bookhoard/internal/middleware"
+	"bookhoard/internal/rls"
 	"bookhoard/internal/router"
 	"bookhoard/internal/services"
 	wsync "bookhoard/internal/sync"
@@ -317,6 +318,37 @@ func createRegularUserOnce(t *testing.T, db *database.Queries) UserTestData {
 	}
 }

+// seedCtx is the context harness-level media seeding runs under. It
+// carries rls.SeedIdentity — a valid UUID with NO library_visibility
+// rows, so RLS grants it full visibility (needed because sqlc :one
+// inserts use RETURNING, which requires SELECT visibility of the new
+// row). setup.DB additionally falls back to this identity for calls
+// that pass a bare context. Product code never uses this; requests
+// carry real personas.
+func seedCtx() context.Context {
+	return rls.WithUser(context.Background(), rls.SeedIdentity)
+}
+
+// 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
+// inside a transaction.
+func seedExec(t *testing.T, pool *pgxpool.Pool, sql string, args ...any) {
+	t.Helper()
+	ctx := rls.WithUser(context.Background(), rls.SeedIdentity)
+	tx, err := pool.Begin(ctx)
+	require.NoError(t, err)
+	if _, err := tx.Exec(ctx, `SELECT set_config('app.user_id', $1, true)`, rls.SeedIdentity.String()); err != nil {
+		_ = tx.Rollback(ctx)
+		require.NoError(t, err, "declare seed identity")
+	}
+	if _, err := tx.Exec(ctx, sql, args...); err != nil {
+		_ = tx.Rollback(ctx)
+		require.NoError(t, err, "seed exec")
+	}
+	require.NoError(t, tx.Commit(ctx))
+}
+
 // uuidToPGType converts uuid.UUID to pgtype.UUID
 func uuidToPGType(u uuid.UUID) pgtype.UUID {
 	return pgtype.UUID{Bytes: [16]byte(u), Valid: true}
@@ -491,10 +523,29 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 	dbConfig, err := pgxpool.ParseConfig(cfg.DatabaseURL())
 	require.NoError(t, err, "Failed to parse database URL")
 	dbConfig.MaxConns = 1
+	// Harness-only session identity (plan §5): every connection in this
+	// pool runs as rls.SeedIdentity at SESSION scope, so raw-pool
+	// statements in tests (DBPool.Exec/QueryRow against governed tables)
+	// pass the read policy. No bleed risk: this pool never serves a
+	// second identity — A3 applies to the server's request pool.
+	dbConfig.BeforeAcquire = func(ctx context.Context, conn *pgx.Conn) bool {
+		_, err := conn.Exec(ctx, `SELECT set_config('app.user_id', $1, false)`, rls.SeedIdentity.String())
+		return err == nil
+	}
 	dbPool, err := pgxpool.NewWithConfig(context.Background(), dbConfig)
 	require.NoError(t, err, "Failed to connect to test database")

-	queries := database.New(dbPool)
+	// ScopedDB: the test server must behave EXACTLY like the production
+	// wiring (main.go) — every statement through Queries declares the
+	// acting user for RLS, including the search service's raw DBTX path.
+	// TestServerSetup.DB below is the SEED handle — also ScopedDB-wired
+	// (required: sqlc :one inserts use RETURNING, which evaluates the
+	// SELECT policy even on INSERT) — but its callers pass seedCtx(), a
+	// synthetic identity with no visibility rows, so seeding sees and
+	// writes everything. Real personas only exist at the HTTP layer.
+	scopedDB := database.NewScopedDB(dbPool)
+	queries := database.New(scopedDB)
+	seedDB := database.New(database.NewSeedDB(dbPool))

 	// Wire the tunable settings registry exactly like main.go: Load
 	// populates the cache (missing rows fall back to compiled defaults)
@@ -552,7 +603,7 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 	statisticsService := services.NewStatisticsService(queries)
 	statsHandler := handlers.NewStatsHandler(statisticsService)
 	seriesHandler := handlers.NewSeriesHandler(queries)
-	mediaHandler := handlers.NewMediaHandler(queries, dbPool, libraryService, progressService, annotationService, worker)
+	mediaHandler := handlers.NewMediaHandler(queries, scopedDB, libraryService, progressService, annotationService, worker)
 	matchingHandler := handlers.NewMatchingHandler(queries, connManager)

 	// Create conversion service for OPDS
@@ -756,7 +807,7 @@ func setupTestServer(t *testing.T) *TestServerSetup {
 	// Create TestServerSetup struct with all resources
 	setup := &TestServerSetup{
 		Server:            ts,
-		DB:                queries,
+		DB:                seedDB, // harness seeding/cleanup handle (see comment above)
 		DBPool:            dbPool,
 		Config:            cfg,
 		ConnManager:       connManager,
@@ -1877,3 +1877,72 @@ CREATE INDEX IF NOT EXISTS idx_hash_conflicts_status ON hash_conflicts(status);

 -- Widen for databases created before the resolution format settled (no-op otherwise)
 ALTER TABLE hash_conflicts ALTER COLUMN resolution TYPE VARCHAR(50);
+
+-- ============================================================
+-- RLS: PER-USER LIBRARY VISIBILITY (ONE SOURCE OF TRUTH)
+-- Plan: ~/.opencode/plan/server-rls-library-visibility.md REV 2.
+-- The policy joins library_visibility DIRECTLY — the same table the
+-- visibility UI writes. The app declares the acting user per
+-- transaction via the LOCAL GUC app.user_id (ScopedDB, set_config
+-- is_local=true). Unset identity FAILS LOUD, never fails open:
+--   - GUC never set in the session -> current_setting() raises
+--     ("unrecognized configuration parameter")
+--   - GUC set-then-transaction-ended -> reverts to '' -> the ::uuid
+--     cast raises
+--   - NULL GUC (unreachable via ScopedDB) -> IS NOT NULL guard ->
+--     zero rows (fail-closed)
+-- The runtime role bookhoard_srv OWNS these tables and is subject to
+-- the policies via FORCE (z_rls_role.sh). Never connect the app as
+-- the bootstrap superuser — superusers bypass RLS unconditionally.
+-- IDEMPOTENT: schema.sql re-executes on EVERY app boot
+-- (database.Initialize -> executeSchema); DROP .. IF EXISTS + CREATE
+-- matches the repo's trigger idiom. DO NOT make this block
+-- non-idempotent — the second boot would brick the app.
+-- ============================================================
+
+DROP POLICY IF EXISTS p_media_items_visible ON media_items;
+DROP POLICY IF EXISTS p_media_items_insert ON media_items;
+DROP POLICY IF EXISTS p_media_items_update ON media_items;
+DROP POLICY IF EXISTS p_media_items_delete ON media_items;
+
+ALTER TABLE media_items ENABLE ROW LEVEL SECURITY;
+ALTER TABLE media_items FORCE ROW LEVEL SECURITY;
+
+-- READ policy: EXACTLY the app's COALESCE(lv.is_visible, true)
+-- semantics — row absent -> visible; row true -> visible; row false
+-- -> hidden. No new index needed: library_visibility's
+-- UNIQUE(user_id, library_id) constraint already indexes the join.
+CREATE POLICY p_media_items_visible ON media_items
+  FOR SELECT
+  USING (
+    current_setting('app.user_id') IS NOT NULL
+    AND NOT EXISTS (
+      SELECT 1 FROM library_visibility lv
+      WHERE lv.user_id = current_setting('app.user_id')::uuid
+        AND lv.library_id = media_items.library_id
+        AND lv.is_visible = false
+    )
+  );
+
+-- WRITE policies: PERMISSIVE STAND-INS for the deferred scoped write
+-- lens. MANDATORY at ENABLE time — with RLS enabled and no applicable
+-- policy, INSERT fails (42501) and UPDATE/DELETE silently affect zero
+-- rows, bricking the media scanner. Per-command split is deliberate:
+-- a single FOR ALL policy with USING (true) would OR into SELECT and
+-- disable the read policy above. Writes still need SELECT visibility
+-- of the target rows (the read policy governs that), which internal
+-- identities satisfy (they have no hidden rows).
+-- ON CONFLICT upserts (scanner: (library_id, file_path)) need the
+-- conflicting row SELECT-visible to the acting identity — holds for
+-- every internal identity by construction.
+CREATE POLICY p_media_items_insert ON media_items
+  FOR INSERT WITH CHECK (true);
+CREATE POLICY p_media_items_update ON media_items
+  FOR UPDATE USING (true) WITH CHECK (true);
+CREATE POLICY p_media_items_delete ON media_items
+  FOR DELETE USING (true);
+
+-- Other tables: NONE. collection_items reaches media only via INNER
+-- JOIN media_items (the join drops filtered rows). collections
+-- metadata (book_count) is a separate counts question — plan A13.
+-- ============================================================
@@ -22,10 +22,12 @@ services:
    container_name: bookhoard_tests
    environment:
      # Database Configuration
+      # Runtime role = bookhoard_srv (non-superuser OWNER, subject to RLS
+      # via FORCE) — same role the app service uses.
      DATABASE_HOST: db
      DATABASE_PORT: ${DB_PORT:-5432}
-      DATABASE_USER: postgres
-      DATABASE_PASSWORD: ${DBPASS}
+      DATABASE_USER: bookhoard_srv
+      DATABASE_PASSWORD: ${DBSRVPASS}
      DATABASE_NAME: bookhoard
      COOKIE_SECURE: false

@@ -11,9 +11,6 @@ services:
      PGPORT: ${DB_PORT:-5432}
    volumes:
      - postgres_data:/var/lib/postgresql/data
-      - ./database/schema:/docker-entrypoint-initdb.d
-      # Make other volumes as needed
-      - ./uploads:/app/uploads
    ports:
      - "127.0.0.1:${DB_PORT:-5432}:${DB_PORT:-5432}"
      - "[::1]:${DB_PORT:-5432}:${DB_PORT:-5432}"
@@ -26,6 +23,58 @@ services:
    env_file:
      - .env

+  # One-shot bootstrap: creates the bookhoard_srv runtime role and
+  # transfers object ownership to it (RLS prerequisite). Idempotent —
+  # safe on every startup; the app waits for its success. Passwords
+  # accept inline values or .env, like the rest of this file.
+  # NOTE: plpgsql $$ tags are written $$$$ — compose eats one dollar
+  # per pair before the container sees the SQL.
+  db-init:
+    image: postgres:15-alpine
+    container_name: bookhoard_db_init
+    environment:
+      PGHOST: db
+      PGPORT: ${DB_PORT:-5432}
+      PGUSER: postgres
+      PGDATABASE: bookhoard
+      PGPASSWORD: ${DBPASS}
+      DBSRVPASS: ${DBSRVPASS}
+    entrypoint: ["bash", "-c"]
+    command:
+      - |
+        set -e
+        : "${DBSRVPASS:?DBSRVPASS required in .env}"
+        psql -v ON_ERROR_STOP=1 -v role_pass="$DBSRVPASS" <<'EOSQL'
+        DO $$$$
+        BEGIN
+          IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'bookhoard_srv') THEN
+            CREATE ROLE bookhoard_srv LOGIN;
+          END IF;
+        END $$$$;
+        ALTER ROLE bookhoard_srv LOGIN PASSWORD :'role_pass';
+        DO $$$$
+        DECLARE r RECORD;
+        BEGIN
+          FOR r IN SELECT tablename FROM pg_tables WHERE schemaname = 'public' LOOP
+            EXECUTE format('ALTER TABLE public.%I OWNER TO bookhoard_srv', r.tablename);
+          END LOOP;
+          FOR r IN SELECT sequencename FROM pg_sequences WHERE schemaname = 'public' LOOP
+            EXECUTE format('ALTER SEQUENCE public.%I OWNER TO bookhoard_srv', r.sequencename);
+          END LOOP;
+          FOR r IN SELECT p.oid::regprocedure AS fn FROM pg_proc p
+                   JOIN pg_namespace n ON p.pronamespace = n.oid
+                   WHERE n.nspname = 'public' AND p.prokind = 'f' LOOP
+            EXECUTE format('ALTER FUNCTION %s OWNER TO bookhoard_srv', r.fn);
+          END LOOP;
+        END $$$$;
+        ALTER SCHEMA public OWNER TO bookhoard_srv;
+        ALTER DATABASE bookhoard OWNER TO bookhoard_srv;
+        EOSQL
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: "no"
+
  # Bookhoard Application
  # In production this image is pulled from the Gitea container registry.
  # Override IMAGE_TAG in .env to pin or rollback a specific version (defaults to "latest").
@@ -35,10 +84,13 @@ services:
    restart: unless-stopped
    environment:
      # Database Configuration
+      # Runtime role = bookhoard_srv (non-superuser OWNER, subject to RLS
+      # via FORCE). POSTGRES_USER above is the bootstrap account ONLY —
+      # the app must NEVER connect as it (superusers bypass RLS).
      DATABASE_HOST: db
      DATABASE_PORT: ${DB_PORT:-5432}
-      DATABASE_USER: postgres
-      DATABASE_PASSWORD: ${DBPASS}
+      DATABASE_USER: bookhoard_srv
+      DATABASE_PASSWORD: ${DBSRVPASS}
      DATABASE_NAME: bookhoard

      # Application Configuration
@@ -75,6 +127,8 @@ services:
    depends_on:
      db:
        condition: service_healthy
+      db-init:
+        condition: service_completed_successfully
    volumes:
      - ./uploads:/app/uploads
      - bookhoard_conversion_cache:/app/cache/kepub
@@ -432,3 +432,14 @@ library_name`.
  partial (layout=dropdown on the same endpoint, HX-Request) instead
  of the retired innerHTML renderer in web/src/search.ts — same
  endpoint, same auth, content server-rendered.
+
+## 2026-10-29 — RLS visibility: item-scoped gates may answer 404 as well as 403
+
+With library visibility enforced by Postgres RLS (see
+database/schema/schema.sql), a hidden library's rows are INVISIBLE to
+the engine — item-scoped endpoints (chapters, tracks, download, detail)
+can no longer run their Go-level 403 gate because the row never arrives.
+Both answers are gated: 403 (Go-level explicit-library checks remain on
+listing endpoints) and 404 (row-level invisibility — no existence leak).
+Pins asserting 403 on item-scoped content endpoints widen to accept
+{403, 404}. Listing/scoped endpoints keep the strict 403 contract.
@@ -171,6 +171,12 @@ type Querier interface {
 	DeleteUnlinkedBook(ctx context.Context, id pgtype.UUID) error
 	DeleteUser(ctx context.Context, id pgtype.UUID) error
 	DeleteUserSystemCollection(ctx context.Context, arg DeleteUserSystemCollectionParams) error
+	// Device deletion (deregister on logout): detach the device's reading
+	// history instead of deleting it — these rows are real captured stats
+	// (the Users section reads them); reading_history.device_id is NO ACTION
+	// so a blind device delete 500s once any history anchors to the device.
+	// device_id is nullable: NULL keeps the session, loses the association.
+	DetachReadingHistoryFromDevice(ctx context.Context, deviceID pgtype.UUID) error
 	// Device existence probe for capture: the web/app progress paths
 	// historically stuff the user id into DeviceID (it only fed a broadcast
 	// label before stats); a capture row must only reference a REAL device.
@@ -2362,6 +2362,20 @@ func (q *Queries) DeleteUserSystemCollection(ctx context.Context, arg DeleteUser
 	return err
 }

+const DetachReadingHistoryFromDevice = `-- name: DetachReadingHistoryFromDevice :exec
+UPDATE reading_history SET device_id = NULL WHERE device_id = $1
+`
+
+// Device deletion (deregister on logout): detach the device's reading
+// history instead of deleting it — these rows are real captured stats
+// (the Users section reads them); reading_history.device_id is NO ACTION
+// so a blind device delete 500s once any history anchors to the device.
+// device_id is nullable: NULL keeps the session, loses the association.
+func (q *Queries) DetachReadingHistoryFromDevice(ctx context.Context, deviceID pgtype.UUID) error {
+	_, err := q.db.Exec(ctx, DetachReadingHistoryFromDevice, deviceID)
+	return err
+}
+
 const DeviceExistsForUser = `-- name: DeviceExistsForUser :one
 SELECT EXISTS(
    SELECT 1 FROM devices
@@ -2809,6 +2809,14 @@ SET
    updated_at = NOW()
 WHERE id = $1;

+-- name: DetachReadingHistoryFromDevice :exec
+-- Device deletion (deregister on logout): detach the device's reading
+-- history instead of deleting it — these rows are real captured stats
+-- (the Users section reads them); reading_history.device_id is NO ACTION
+-- so a blind device delete 500s once any history anchors to the device.
+-- device_id is nullable: NULL keeps the session, loses the association.
+UPDATE reading_history SET device_id = NULL WHERE device_id = $1;
+
 -- name: DeleteDevice :exec
 DELETE FROM devices WHERE id = $1;

@@ -178,6 +178,16 @@ func verifyFunctions(ctx context.Context, db *pgxpool.Pool, expectedFunctions []
 	return nil
 }

+// schemaMigrationIdentity is the synthetic identity the schema
+// migration transaction declares for RLS (plan appendix A11). The
+// schema's dedup DO block SELECTs/DELETEs media_items, and with the
+// visibility policies live (FORCE applies to the owner) that SELECT
+// needs app.user_id set even in this maintenance tx. The identity has
+// NO library_visibility rows, so the policy grants it full visibility
+// — appropriate for the server's own schema pass, and unreachable by
+// requests (this tx only ever runs at startup, on the raw pool).
+const schemaMigrationIdentity = "00000000-0000-0000-0000-000000000001"
+
 // executeSchema runs the entire schema.sql in a single transaction
 func executeSchema(ctx context.Context, db *pgxpool.Pool) error {
 	tx, err := db.Begin(ctx)
@@ -186,6 +196,12 @@ func executeSchema(ctx context.Context, db *pgxpool.Pool) error {
 	}
 	defer tx.Rollback(ctx)

+	// Declare the migration identity BEFORE the file executes (A11):
+	// policy'd tables are queried by schema.sql itself on re-runs.
+	if _, err := tx.Exec(ctx, `SELECT set_config('app.user_id', $1, true)`, schemaMigrationIdentity); err != nil {
+		return fmt.Errorf("schema execution failed (declare migration identity): %w", err)
+	}
+
 	_, err = tx.Exec(ctx, SchemaFile)
 	if err != nil {
 		log.Printf("HINT: Run manually to debug: psql -h localhost -U postgres -d bookhoard -f database/schema/schema.sql")
@@ -0,0 +1,163 @@
+// ScopedDB wraps a pgx pool so every sqlc statement runs inside a
+// transaction that declares the acting user via the LOCAL
+// `app.user_id` GUC — the one thing the RLS policies
+// (database/schema/schema.sql) need to filter media rows per user.
+//
+// Fail-loud lives in the ENGINE, not here: a context with no identity
+// simply declares nothing, and any RLS-governed statement (media_items)
+// then raises on the unset GUC — while ungoverned tables (auth lookups,
+// settings, sessions) keep working, as they have no policy. That is the
+// plan-C property: the database is the one door everything crosses; the
+// decorator is only the identity declarer.
+//
+// SEMANTICS PRESERVED: every sqlc call was already a single
+// auto-committed statement; one transaction per call keeps per-call
+// atomicity identical. pgx v5 rows are bound to their transaction, so
+// the transaction ends when the ROWS end: commit-on-Close for :many
+// results, commit-on-Scan for :one results, plain commit for Exec.
+//
+// Rollout plan: ~/.opencode/plan/server-rls-library-visibility.md.
+package database
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"bookhoard/internal/rls"
+)
+
+// Compile-pin: ScopedDB is a drop-in DBTX for database.New.
+var _ DBTX = (*ScopedDB)(nil)
+
+// ScopedDB implements DBTX over a pool, declaring the acting user for
+// the RLS policies on every statement. Fallback (test harness ONLY —
+// see NewSeedDB) supplies an identity when the context carries none.
+type ScopedDB struct {
+	Pool     *pgxpool.Pool
+	Fallback *pgtype.UUID
+}
+
+// NewScopedDB is the constructor used at the single Queries
+// construction site (cmd/server/main.go).
+func NewScopedDB(pool *pgxpool.Pool) *ScopedDB {
+	return &ScopedDB{Pool: pool}
+}
+
+// NewSeedDB returns a ScopedDB for TEST-HARNESS seeding/verification:
+// when the context carries no identity it falls back to
+// rls.SeedIdentity, so direct media reads/writes from helpers work
+// without impersonating a real user. Never use in product wiring.
+func NewSeedDB(pool *pgxpool.Pool) *ScopedDB {
+	seed := rls.SeedIdentity
+	return &ScopedDB{Pool: pool, Fallback: &seed}
+}
+
+const zeroUUID = "00000000-0000-0000-0000-000000000000"
+
+// begin opens the per-statement transaction. If the context carries a
+// user identity, the GUC is declared (LOCAL); if not, NOTHING is
+// declared and the ENGINE decides: RLS-governed tables (media_items)
+// raise on the unset GUC — fail-loud at the database, the layer plan C
+// exists to enforce at — while RLS-ungoverned tables (users, settings,
+// sessions, auth lookups pre-bridge) simply work, as they have no
+// policy to evaluate. The decorator therefore never refuses: refusing
+// here would re-create a convention gate in code, one more door future
+// paths could forget — the engine is the one door everything crosses.
+func (s *ScopedDB) begin(ctx context.Context) (pgx.Tx, error) {
+	tx, err := s.Pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	uid, ok := rls.FromContext(ctx)
+	if (!ok || !uid.Valid || uid.String() == zeroUUID) && s.Fallback != nil {
+		uid, ok = *s.Fallback, true
+	}
+	if ok && uid.Valid && uid.String() != zeroUUID {
+		if err := rls.DeclareUser(ctx, tx, uid); err != nil {
+			_ = tx.Rollback(ctx)
+			return nil, fmt.Errorf("rls: declare user: %w", err)
+		}
+	}
+	return tx, nil
+}
+
+func (s *ScopedDB) Exec(ctx context.Context, sql string, args ...any) (pgconn.CommandTag, error) {
+	tx, err := s.begin(ctx)
+	if err != nil {
+		return pgconn.CommandTag{}, err
+	}
+	// Rollback after a successful Commit is a no-op (ErrTxClosed ignored):
+	// this defer only acts on the error paths.
+	defer func() { _ = tx.Rollback(ctx) }()
+	tag, err := tx.Exec(ctx, sql, args...)
+	if err != nil {
+		return pgconn.CommandTag{}, err
+	}
+	return tag, tx.Commit(ctx)
+}
+
+func (s *ScopedDB) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
+	tx, err := s.begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	rows, err := tx.Query(ctx, sql, args...)
+	if err != nil {
+		_ = tx.Rollback(ctx)
+		return nil, err
+	}
+	return &scopedRows{Rows: rows, tx: tx, ctx: ctx}, nil
+}
+
+// scopedRows commits the transaction when the rows close — committing
+// earlier would kill the rows mid-read. sqlc's :many path fully
+// consumes rows then Close()s. pgx v5 Rows.Close returns nothing, so a
+// commit error is logged, not propagated (a commit failure on a
+// read-only transaction is log-worthy only).
+type scopedRows struct {
+	pgx.Rows
+	tx  pgx.Tx
+	ctx context.Context
+}
+
+func (r *scopedRows) Close() {
+	r.Rows.Close()
+	if err := r.tx.Commit(r.ctx); err != nil {
+		log.Printf("rls: tx commit after rows: %v", err)
+	}
+}
+
+// scopedRow terminates the transaction on EVERY Scan path for sqlc's
+// :one results (pgx.Row is just { Scan(dest ...) error }).
+type scopedRow struct {
+	row pgx.Row
+	tx  pgx.Tx
+	ctx context.Context
+}
+
+func (r scopedRow) Scan(dest ...any) error {
+	err := r.row.Scan(dest...)
+	if err == nil {
+		return r.tx.Commit(r.ctx)
+	}
+	_ = r.tx.Rollback(r.ctx) // best effort; the tx ends either way
+	return err
+}
+
+type errRow struct{ err error }
+
+func (r errRow) Scan(_ ...any) error { return r.err }
+
+func (s *ScopedDB) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
+	tx, err := s.begin(ctx)
+	if err != nil {
+		return errRow{err}
+	}
+	return scopedRow{row: tx.QueryRow(ctx, sql, args...), tx: tx, ctx: ctx}
+}
@@ -3,7 +3,6 @@ package handlers
 import (
 	"bookhoard/internal/database"
 	"bookhoard/internal/utils"
-	"context"
 	"errors"
 	"fmt"
 	"net/http"
@@ -102,7 +101,7 @@ func (h *AnalyticsHandler) GetReadingStats(c *echo.Context) error {
 	// "today") never appear.
 	endTime = endTime.AddDate(0, 0, 1).Add(-time.Nanosecond)

-	ctx := context.Background()
+	ctx := c.Request().Context()

 	history, err := h.db.GetUserReadingHistory(ctx, database.GetUserReadingHistoryParams{
 		UserID:      user.ID,
@@ -220,7 +219,7 @@ func (h *AnalyticsHandler) calculateMostActiveDay(history []database.GetUserRead
 func (h *AnalyticsHandler) GetDeviceUsage(c *echo.Context) error {
 	user := c.Get("user").(database.Users)

-	ctx := context.Background()
+	ctx := c.Request().Context()

 	usage, err := h.db.GetUserDeviceUsage(ctx, user.ID)
 	if err != nil && !errors.Is(err, pgx.ErrNoRows) {
@@ -268,7 +267,7 @@ func (h *AnalyticsHandler) GetPopularBooks(c *echo.Context) error {
 		limitInt = parsedLimit
 	}

-	ctx := context.Background()
+	ctx := c.Request().Context()

 	books, err := h.db.GetPopularBooks(ctx, database.GetPopularBooksParams{
 		UserID: user.ID,
@@ -80,7 +80,7 @@ func (h *ConflictHandler) GetConflictsData(c *echo.Context) ([]ConflictDetailRes
 		status = "unresolved"
 	}

-	ctx := context.Background()
+	ctx := c.Request().Context()

 	var conflicts interface{}
 	var err error
@@ -175,7 +175,7 @@ func (h *ConflictHandler) GetConflict(c *echo.Context) error {
 	}

 	conflictUUID := pgtype.UUID{Bytes: [16]byte(conflictID), Valid: true}
-	conflict, err := h.db.GetSyncConflict(context.Background(), conflictUUID)
+	conflict, err := h.db.GetSyncConflict(c.Request().Context(), conflictUUID)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return echo.NewHTTPError(http.StatusNotFound, "conflict not found")
@@ -187,7 +187,7 @@ func (h *ConflictHandler) GetConflict(c *echo.Context) error {
 		return echo.NewHTTPError(http.StatusForbidden, "access denied")
 	}

-	mediaItem, err := h.db.GetMediaItem(context.Background(), conflict.MediaItemID)
+	mediaItem, err := h.db.GetMediaItem(c.Request().Context(), conflict.MediaItemID)
 	if err != nil {
 		return echo.NewHTTPError(http.StatusInternalServerError, "failed to get media item")
 	}
@@ -223,7 +223,7 @@ func (h *ConflictHandler) ResolveConflict(c *echo.Context) error {
 	}

 	conflictUUID := pgtype.UUID{Bytes: [16]byte(conflictID), Valid: true}
-	conflict, err := h.db.GetSyncConflict(context.Background(), conflictUUID)
+	conflict, err := h.db.GetSyncConflict(c.Request().Context(), conflictUUID)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return echo.NewHTTPError(http.StatusNotFound, "conflict not found")
@@ -263,13 +263,13 @@ func (h *ConflictHandler) ResolveConflict(c *echo.Context) error {
 	}

 	if conflict.ConflictType == "progress" {
-		if err := h.applyProgressResolution(conflict.MediaItemID, conflict.UserID, winnerSource, winnerData); err == nil {
+		if err := h.applyProgressResolution(c.Request().Context(), conflict.MediaItemID, conflict.UserID, winnerSource, winnerData); err == nil {
 			appliedTo["progress"] = true
 		}
 	}

 	if conflict.ConflictType == "annotation_highlight" || conflict.ConflictType == "annotation_bookmark" || conflict.ConflictType == "annotation_note" {
-		if err := h.applyAnnotationResolution(conflict.MediaItemID, conflict.UserID, winnerData, conflict.ConflictType); err == nil {
+		if err := h.applyAnnotationResolution(c.Request().Context(), conflict.MediaItemID, conflict.UserID, winnerData, conflict.ConflictType); err == nil {
 			appliedTo["annotations"] = true
 		}
 	}
@@ -283,7 +283,7 @@ func (h *ConflictHandler) ResolveConflict(c *echo.Context) error {

 	resolutionDataJSON, _ := json.Marshal(resolutionData)

-	_, err = h.db.ResolveSyncConflict(context.Background(), database.ResolveSyncConflictParams{
+	_, err = h.db.ResolveSyncConflict(c.Request().Context(), database.ResolveSyncConflictParams{
 		ID:               conflictUUID,
 		ResolutionStatus: pgtype.Text{String: "user_resolved", Valid: true},
 		ResolutionData:   resolutionDataJSON,
@@ -321,7 +321,7 @@ func (h *ConflictHandler) ResolveConflict(c *echo.Context) error {
 //     the service's LWW seed instead of being NULLed — that is the fix.
 //     chapter_progress keeps its stored value instead of being overwritten
 //     with the book-level percentage.
-func (h *ConflictHandler) applyProgressResolution(mediaItemID pgtype.UUID, userID pgtype.UUID, winnerSource string, data map[string]interface{}) error {
+func (h *ConflictHandler) applyProgressResolution(ctx context.Context, mediaItemID pgtype.UUID, userID pgtype.UUID, winnerSource string, data map[string]interface{}) error {
 	req := wsync.SaveProgressRequest{
 		MediaItemID:           mediaItemID,
 		UserID:                userID,
@@ -361,12 +361,11 @@ func (h *ConflictHandler) applyProgressResolution(mediaItemID pgtype.UUID, userI
 		req.TotalPages = &tp
 	}

-	_, err := h.progressSvc.SaveProgress(context.Background(), req)
+	_, err := h.progressSvc.SaveProgress(ctx, req)
 	return err
 }

-func (h *ConflictHandler) applyAnnotationResolution(mediaItemID pgtype.UUID, userID pgtype.UUID, winnerData map[string]interface{}, conflictType string) error {
-	ctx := context.Background()
+func (h *ConflictHandler) applyAnnotationResolution(ctx context.Context, mediaItemID pgtype.UUID, userID pgtype.UUID, winnerData map[string]interface{}, conflictType string) error {

 	dedupKey, _ := winnerData["dedup_key"].(string)
 	if dedupKey == "" {
@@ -530,7 +529,7 @@ func (h *ConflictHandler) DeleteConflict(c *echo.Context) error {
 	}

 	conflictUUID := pgtype.UUID{Bytes: [16]byte(conflictID), Valid: true}
-	conflict, err := h.db.GetSyncConflict(context.Background(), conflictUUID)
+	conflict, err := h.db.GetSyncConflict(c.Request().Context(), conflictUUID)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return echo.NewHTTPError(http.StatusNotFound, "conflict not found")
@@ -542,7 +541,7 @@ func (h *ConflictHandler) DeleteConflict(c *echo.Context) error {
 		return echo.NewHTTPError(http.StatusForbidden, "access denied")
 	}

-	if err := h.db.DeleteSyncConflict(context.Background(), conflictUUID); err != nil {
+	if err := h.db.DeleteSyncConflict(c.Request().Context(), conflictUUID); err != nil {
 		return echo.NewHTTPError(http.StatusInternalServerError, "failed to delete conflict")
 	}

@@ -552,7 +551,7 @@ func (h *ConflictHandler) DeleteConflict(c *echo.Context) error {
 func (h *ConflictHandler) DismissAllResolved(c *echo.Context) error {
 	user := c.Get("user").(database.Users)

-	conflicts, err := h.db.ListConflictsByUser(context.Background(), user.ID)
+	conflicts, err := h.db.ListConflictsByUser(c.Request().Context(), user.ID)
 	if err != nil {
 		return echo.NewHTTPError(http.StatusInternalServerError, "failed to list conflicts")
 	}
@@ -560,7 +559,7 @@ func (h *ConflictHandler) DismissAllResolved(c *echo.Context) error {
 	deleted := 0
 	for _, conflict := range conflicts {
 		if conflict.ResolutionStatus.String == "user_resolved" || conflict.ResolutionStatus.String == "bulk_resolved" {
-			if err := h.db.DeleteSyncConflict(context.Background(), conflict.ID); err == nil {
+			if err := h.db.DeleteSyncConflict(c.Request().Context(), conflict.ID); err == nil {
 				deleted++
 			}
 		}
@@ -620,7 +619,7 @@ func (h *ConflictHandler) BulkResolveConflicts(c *echo.Context) error {
 		}

 		conflictUUID := pgtype.UUID{Bytes: [16]byte(conflictID), Valid: true}
-		conflict, err := h.db.GetSyncConflict(context.Background(), conflictUUID)
+		conflict, err := h.db.GetSyncConflict(c.Request().Context(), conflictUUID)
 		if err != nil {
 			results = append(results, ConflictResult{
 				ConflictID: conflictIDStr,
@@ -702,7 +701,7 @@ func (h *ConflictHandler) BulkResolveConflicts(c *echo.Context) error {
 			continue
 		}

-		if err := h.applyProgressResolution(conflict.MediaItemID, conflict.UserID, winningSource, winnerData); err != nil {
+		if err := h.applyProgressResolution(c.Request().Context(), conflict.MediaItemID, conflict.UserID, winningSource, winnerData); err != nil {
 			results = append(results, ConflictResult{
 				ConflictID: conflictIDStr,
 				Status:     "error",
@@ -719,7 +718,7 @@ func (h *ConflictHandler) BulkResolveConflicts(c *echo.Context) error {
 		}
 		resolutionDataJSON, _ := json.Marshal(resolutionData)

-		_, err = h.db.ResolveSyncConflict(context.Background(), database.ResolveSyncConflictParams{
+		_, err = h.db.ResolveSyncConflict(c.Request().Context(), database.ResolveSyncConflictParams{
 			ID:               conflictUUID,
 			ResolutionStatus: pgtype.Text{String: "bulk_resolved", Valid: true},
 			ResolutionData:   resolutionDataJSON,
@@ -817,7 +816,7 @@ func (h *ConflictHandler) BulkDismissConflicts(c *echo.Context) error {
 		}

 		conflictUUID := pgtype.UUID{Bytes: [16]byte(conflictID), Valid: true}
-		conflict, err := h.db.GetSyncConflict(context.Background(), conflictUUID)
+		conflict, err := h.db.GetSyncConflict(c.Request().Context(), conflictUUID)
 		if err != nil {
 			results = append(results, ConflictResult{
 				ConflictID: conflictIDStr,
@@ -838,7 +837,7 @@ func (h *ConflictHandler) BulkDismissConflicts(c *echo.Context) error {
 			continue
 		}

-		if err := h.db.DeleteSyncConflict(context.Background(), conflictUUID); err != nil {
+		if err := h.db.DeleteSyncConflict(c.Request().Context(), conflictUUID); err != nil {
 			results = append(results, ConflictResult{
 				ConflictID: conflictIDStr,
 				Status:     "error",
@@ -433,6 +433,12 @@ func (h *DeviceHandler) DeleteDevice(c *echo.Context) error {
 		return c.JSON(http.StatusForbidden, map[string]string{"error": "access denied"})
 	}

+	// Detach reading history first: the history FK to devices is NO
+	// ACTION on purpose (rows are real captured stats); NULLing the
+	// device association keeps the stats while freeing the device.
+	if err := h.db.DetachReadingHistoryFromDevice(c.Request().Context(), pgDeviceID); err != nil {
+		return c.JSON(http.StatusInternalServerError, map[string]string{"error": "failed to detach device history"})
+	}
 	if err := h.db.DeleteDevice(c.Request().Context(), pgDeviceID); err != nil {
 		return c.JSON(http.StatusInternalServerError, map[string]string{"error": "failed to delete device"})
 	}
@@ -1,12 +1,15 @@
 package handlers

 import (
+	"context"
 	"net/http"

 	"github.com/google/uuid"
 	"github.com/labstack/echo/v5"
+	"github.com/jackc/pgx/v5/pgtype"

 	"bookhoard/internal/database"
+	"bookhoard/internal/rls"
 	"bookhoard/internal/services"
 )

@@ -49,12 +52,17 @@ func (h *JobsHandler) CreateJob(c *echo.Context) error {
 	// Add database to params
 	req.Params["db"] = h.db

+	// RLS plan §6: the job's Context carries the requesting admin's
+	// identity — governed reads inside the job would raise otherwise.
+	userUUID, _ := uuid.Parse(c.Get("user_id").(string))
+
 	// Create job
 	job := &services.Job{
 		ID:      uuid.New().String(),
 		Type:    jobType,
 		Params:  req.Params,
 		Status:  services.JobStatusPending,
+		Context: rls.WithUser(context.Background(), pgtype.UUID{Bytes: userUUID, Valid: true}),
 	}

 	// Enqueue job
@@ -4,7 +4,6 @@ import (
 	"bookhoard/internal/database"
 	wsync "bookhoard/internal/sync"
 	"bookhoard/internal/utils"
-	"context"
 	"encoding/json"
 	"net/http"
 	"strconv"
@@ -46,7 +45,7 @@ func (h *Handler) GetProgressHistory(c *echo.Context) error {
 		}
 	}

-	history, err := h.db.GetReadingHistory(context.Background(), database.GetReadingHistoryParams{
+	history, err := h.db.GetReadingHistory(c.Request().Context(), database.GetReadingHistoryParams{
 		UserID:      pgtype.UUID{Bytes: user.ID.Bytes, Valid: true},
 		MediaItemID: pgtype.UUID{Bytes: mediaItemID, Valid: true},
 		Limit:       int32(limit),
@@ -8,6 +8,8 @@ import (
 	"net/http"

 	"github.com/google/uuid"
+
+	"bookhoard/internal/rls"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/labstack/echo/v5"
 )
@@ -127,6 +129,11 @@ func (h *Handler) ScanLibrary(c *echo.Context) error {

 	jobID := uuid.New().String()

+	// RLS plan §6: the scan job's media reads run under the triggering
+	// admin's identity. h.ctx is a handler-lifetime Background context
+	// (outlives the request), so the identity is stamped explicitly —
+	// a bare context makes governed reads raise (placeholder reverting
+	// to '' on reused connections, or 42704 on fresh ones).
 	job := &services.Job{
 		ID:     jobID,
 		Type:   services.JobTypeScan,
@@ -140,7 +147,7 @@ func (h *Handler) ScanLibrary(c *echo.Context) error {
 			"trigger":    "admin",
 		},
 		Status:  services.JobStatusPending,
-		Context: h.ctx,
+		Context: rls.WithUser(h.ctx, pgtype.UUID{Bytes: userUUID, Valid: true}),
 	}

 	if err := h.worker.EnqueueJob(job); err != nil {
@@ -11,6 +11,8 @@ import (

 	jwt "github.com/golang-jwt/jwt/v5"
 	"github.com/google/uuid"
+
+	"bookhoard/internal/rls"
 	"github.com/gorilla/websocket"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/labstack/echo/v5"
@@ -201,14 +203,17 @@ func (h *WSHandler) getInitialState(userID string) map[string]interface{} {

 	pgUserID := pgtype.UUID{Bytes: userUUID, Valid: true}

-	mediaItems, err := h.db.GetUserMediaItemsForSync(context.Background(), pgUserID)
+	// RLS plan §6: this read is the connection's OWN user's media —
+	// declare that identity explicitly (context.Background() carries
+	// nothing through ScopedDB, and media_items is RLS-governed).
+	mediaItems, err := h.db.GetUserMediaItemsForSync(rls.WithUser(context.Background(), pgUserID), pgUserID)
 	if err != nil {
 		return map[string]interface{}{"error": "failed to fetch initial state"}
 	}

 	progressMap := make(map[string]map[string]interface{})
 	for _, item := range mediaItems {
-		progress, err := h.db.GetUniversalProgress(context.Background(), database.GetUniversalProgressParams{
+		progress, err := h.db.GetUniversalProgress(rls.WithUser(context.Background(), pgUserID), database.GetUniversalProgressParams{
 			MediaItemID: item.ID,
 			UserID:      pgUserID,
 		})
@@ -2,6 +2,7 @@ package middleware

 import (
 	"bookhoard/internal/database"
+	"bookhoard/internal/rls"
 	"context"
 	"net/http"
 	"strconv"
@@ -183,6 +184,13 @@ func (m *DeviceAuthMiddleware) Authenticate(next echo.HandlerFunc) echo.HandlerF
 		c.Set("device_ctx", ctx)
 		c.Set("device_id", device.ID.Bytes)

+		// RLS bridge (plan §5.1/A9): device-authenticated requests
+		// (KOReader/Kobo sync) read media as the DEVICE OWNER — echo's
+		// c.Set is echo-local, so the stdlib request context needs the
+		// identity explicitly or every governed read raises.
+		c.SetRequest(c.Request().WithContext(context.WithValue(
+			c.Request().Context(), rls.CtxKeyUserID, device.UserID)))
+
 		return next(c)
 	}
 }
@@ -0,0 +1,63 @@
+// Package rls carries the authenticated end user's identity through
+// the stdlib context so the database layer can declare it to Postgres
+// per transaction (the `app.user_id` GUC the RLS policies read — see
+// database/schema/schema.sql and
+// ~/.opencode/plan/server-rls-library-visibility.md).
+//
+// WHY A SEPARATE PACKAGE: Echo's c.Set/c.Get is echo-local storage and
+// never reaches the context.Context handed to database calls; the auth
+// middleware therefore bridges the user id into the request context
+// here, and ScopedDB (internal/database) reads it back. A query whose
+// context carries no identity is REFUSED (fail-loud) — a code path
+// that forgets the middleware breaks visibly, it never leaks.
+package rls
+
+import (
+	"context"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type ctxKey int
+
+// CtxKeyUserID is the context key the auth middleware bridge sets and
+// ScopedDB reads. Typed key — no string-key collisions.
+const CtxKeyUserID ctxKey = iota
+
+// FromContext returns the authenticated end user's UUID.
+// ok=false means the caller forgot the middleware bridge — the
+// decorator will refuse the query loudly.
+func FromContext(ctx context.Context) (pgtype.UUID, bool) {
+	uid, ok := ctx.Value(CtxKeyUserID).(pgtype.UUID)
+	if !ok || !uid.Valid {
+		return pgtype.UUID{}, false
+	}
+	return uid, true
+}
+
+// WithUser re-attaches an identity to a (possibly detached) context.
+// Background jobs MUST capture the acting user's UUID from the request
+// context BEFORE `go func` detaches — context.Background() carries
+// nothing — and rebuild their job context with this.
+func WithUser(ctx context.Context, uid pgtype.UUID) context.Context {
+	return context.WithValue(ctx, CtxKeyUserID, uid)
+}
+
+// SeedIdentity is the harness seeding identity (plan §5): a valid UUID
+// with NO library_visibility rows, so RLS grants it full visibility.
+// It exists so test seeding and direct DB verification can read and
+// write governed tables without impersonating a real user. Product
+// code never runs as it.
+var SeedIdentity = pgtype.UUID{Bytes: [16]byte(uuid.MustParse("00000000-0000-0000-0000-000000000002")), Valid: true}
+
+// DeclareUser sets the RLS identity GUC inside an ALREADY-OPEN
+// transaction. The `true` argument is is_local: transaction-scoped,
+// evaporating at COMMIT/ROLLBACK — NEVER session-scoped on a pooled
+// connection (cross-request identity bleed). For the manual-tx paths
+// the ScopedDB decorator cannot wrap.
+func DeclareUser(ctx context.Context, tx pgx.Tx, uid pgtype.UUID) error {
+	_, err := tx.Exec(ctx, `SELECT set_config('app.user_id', $1, true)`, uid.String())
+	return err
+}
@@ -6,6 +6,7 @@ import (
 	"bookhoard/internal/handlers"
 	"bookhoard/internal/middleware"
 	ratelimit "bookhoard/internal/middleware"
+	"bookhoard/internal/rls"
 	"bookhoard/internal/services"
 	"bookhoard/internal/sync"
 	"bookhoard/templates"
@@ -155,6 +156,12 @@ func createOptionalAuthMiddleware(cfg *Config) echo.MiddlewareFunc {
 				Timezone: liveUser.Timezone,
 				Theme:    liveUser.Theme, // SSR body class; see the required middleware
 			})
+			// RLS bridge: echo's c.Set is echo-local and never reaches
+			// the stdlib context.Context the database layer receives —
+			// ScopedDB refuses media queries without this (plan §5.1).
+			c.SetRequest(c.Request().WithContext(context.WithValue(
+				c.Request().Context(), rls.CtxKeyUserID,
+				pgtype.UUID{Bytes: userUUID, Valid: true})))
 			return next(c)
 		}
 	}
@@ -222,6 +229,12 @@ func createJWTMiddleware(cfg *Config) echo.MiddlewareFunc {
 				// admin/docs theme flash.
 				Theme: liveUser.Theme,
 			})
+			// RLS bridge (same as the JWT path above): echo-local c.Set
+			// never reaches the stdlib context.Context the database
+			// layer receives — ScopedDB refuses media queries without it.
+			c.SetRequest(c.Request().WithContext(context.WithValue(
+				c.Request().Context(), rls.CtxKeyUserID,
+				pgtype.UUID{Bytes: userUUID, Valid: true})))
 			return nil
 		},
 		ErrorHandler: func(c *echo.Context, err error) error {
@@ -414,7 +427,15 @@ func RegisterRoutes(cfg *Config) *handlers.Handler {
 	// startup scans for disk I/O.
 	go func() {
 		time.Sleep(30 * time.Second)
-		services.NewHashBackfillService(cfg.Queries).Run(context.Background())
+		// RLS plan §6: this self-heal sweeps ALL media — run it as the
+		// first admin (the scanner's documented fallback identity);
+		// a bare Background context makes governed reads raise.
+		adminID, err := cfg.Queries.GetFirstAdmin(context.Background())
+		if err != nil {
+			log.Printf("[HASH-BACKFILL] no admin found, skipping backfill: %v", err)
+			return
+		}
+		services.NewHashBackfillService(cfg.Queries).Run(rls.WithUser(context.Background(), adminID))
 	}()

 	// Register progress routes with actual handler
@@ -43,6 +43,8 @@ import (
 	epub "github.com/ArcadiaLin/go-epub"
 	"github.com/fsnotify/fsnotify"
 	"github.com/google/uuid"
+
+	"bookhoard/internal/rls"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/nwaples/rardecode"
@@ -621,17 +623,23 @@ func (s *MediaScanner) enqueueLibraryScan(rootFolder, trigger string) {
 		folderPaths[i] = f.FolderPath
 	}

+	// The acting admin: the library owner, or the first admin as the
+	// documented fallback (existing pattern). Used BOTH for the job's
+	// UserID and — since RLS (plan §6) — as the identity the job's
+	// media reads run under via its Context.
 	adminIDStr := ""
-	if libRow.CreatedByAdminID.Valid {
-		adminIDStr = uuid.UUID(libRow.CreatedByAdminID.Bytes).String()
+	adminUUID := libRow.CreatedByAdminID
+	if adminUUID.Valid {
+		adminIDStr = uuid.UUID(adminUUID.Bytes).String()
 	}
-	if adminIDStr == "" {
+	if !adminUUID.Valid {
 		fmt.Printf("[MTIME-POLL] Library has no owner, falling back to first admin\n")
 		fallbackAdmin, err := s.db.GetFirstAdmin(context.Background())
 		if err != nil {
 			fmt.Printf("[MTIME-POLL] Warning: no admin found in database, skipping scan\n")
 			return
 		}
+		adminUUID = fallbackAdmin
 		adminIDStr = uuid.UUID(fallbackAdmin.Bytes).String()
 	}

@@ -650,7 +658,7 @@ func (s *MediaScanner) enqueueLibraryScan(rootFolder, trigger string) {
 		Type:    JobTypeScan,
 		Status:  JobStatusPending,
 		UserID:  adminIDStr,
-		Context: context.Background(),
+		Context: rls.WithUser(context.Background(), adminUUID),
 		Params: map[string]any{
 			"library_id": libraryIDStr,
 			"folders":    folderPaths,
@@ -667,6 +675,13 @@ func (s *MediaScanner) enqueueLibraryScan(rootFolder, trigger string) {
 }

 func (s *MediaScanner) ScanFolders(ctx context.Context) error {
+	// RLS plan §6: a scan is server maintenance over library media —
+	// self-declare the scanner's configured admin identity so internal
+	// reads work regardless of the caller's context (worker jobs carry
+	// one; test/direct callers may not). No-op when unconfigured.
+	if s.adminID.Valid {
+		ctx = rls.WithUser(ctx, s.adminID)
+	}
 	// Cancellation is checked at every stage boundary and inside the
 	// walk callback: the in-flight file finishes, then the scan aborts
 	// and reports context.Canceled (processJob classifies that as a
@@ -4771,7 +4786,7 @@ func (s *MediaScanner) performInitialScan(ctx context.Context) {
 			Type:    JobTypeScan,
 			Status:  JobStatusPending,
 			UserID:  adminIDStr,
-			Context: context.Background(),
+			Context: rls.WithUser(ctx, s.adminID), // RLS plan §6: startup scans run as the configured admin
 			Params: map[string]any{
 				"library_id": libraryIDStr,
 				"folders":    folderPaths,
@@ -303,7 +303,7 @@ templ BookShelf(
 						</button>
 					</template>
 				</div>
-				<div id="books-grid" class="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6 gap-4">
+				<div id="books-grid" class="grid grid-cols-3 md:grid-cols-5 lg:grid-cols-6 xl:grid-cols-7 gap-4">
 					@BooksGrid(books, limit, offset, count, currentLibraryID)
 					if errorMessage != "" {
 						<div class="col-span-full mt-2 p-4 rounded-xl border" style="background-color: color-mix(in srgb, var(--status-danger) 10%, transparent); border-color: var(--status-danger);">
@@ -406,7 +406,7 @@ func BookShelf(
 				}
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 39, "</select></div><!-- The rule builder (faceted plan Phase 9): the drawer's\n\t\t\t\t\t\t\t\t\tONLY filter UI. Templ owns the look, Alpine owns the\n\t\t\t\t\t\t\t\t\trule-tree state (the sanctioned island — same pattern\n\t\t\t\t\t\t\t\t\tas the chips bar; server JSON rendered by Alpine, no\n\t\t\t\t\t\t\t\t\tinnerHTML templating). Rows are a flat projection of\n\t\t\t\t\t\t\t\t\tthe tree (depth = indent); groups nest via + group. --><div x-data=\"filterBuilderExtra\" x-cloak x-effect=\"filtersOpen === true && ensureReadyRule()\"><template x-for=\"row in builderRows\" :key=\"row.key\"><div><template x-if=\"row.type === 'groupOpen'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-1\" :style=\"`margin-left:${row.depth * 14}px`\"><span class=\"text-[11px] font-semibold uppercase tracking-wide\" style=\"color: var(--text-secondary)\" x-text=\"row.depth === 0 ? 'Match' : 'Group'\"></span> <span class=\"flex-1\"></span> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addRule(row.path)\">+ rule</button> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addGroup(row.path)\">+ group</button> <button type=\"button\" class=\"fb-mini-btn fb-danger\" @click=\"removeNode(row.path)\" aria-label=\"Remove group\">×</button></div></template><template x-if=\"row.type === 'rule'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-0.5\" :style=\"`margin-left:${(row.depth + 1) * 14}px`\"><button type=\"button\" class=\"fb-connective fb-connective-btn\" :class=\"row.chipClickable ? '' : 'fb-chip-static'\" x-show=\"!row.isFirst\" x-text=\"row.chip\" @click=\"if (row.chipClickable) toggleRuleConnective(row.path)\" :title=\"row.chipClickable ? 'Switch this rule between AND / OR' : 'This rule joins with ' + row.chip\"></button><!-- field picker: grouped menu --><div class=\"relative\"><button type=\"button\" class=\"fb-picker\" :class=\"{'fb-picker-active': row.rule.field !== ''}\" @click=\"toggleMenu(row.key + ':field')\" x-text=\"fieldLabelOf(row.rule.field)\"></button><div class=\"fb-menu fb-menu-fields\" x-show=\"openMenu === row.key + ':field'\" @click.outside=\"openMenu = ''\"><div class=\"fb-menu-filter-wrap\"><input type=\"text\" class=\"fb-menu-filter\" placeholder=\"Filter fields…\" x-model=\"fieldFilter\" @keydown.enter.prevent @click.stop></div><div class=\"fb-menu-scroll\"><template x-for=\"grp in visibleFieldGroups\" :key=\"grp.group\"><div><div class=\"fb-menu-group\" x-text=\"grp.group\"></div><template x-for=\"f in grp.fields\" :key=\"f.key\"><button type=\"button\" class=\"fb-menu-item\" :class=\"row.rule.field === f.key ? 'fb-menu-item-active' : ''\" @click=\"setRuleField(row.path, f.key)\" x-text=\"f.label\"></button></template></div></template><div class=\"fb-menu-empty\" x-show=\"visibleFieldGroups.length === 0\">No matching fields</div></div></div></div><!-- operator picker (negation lives here) --><div class=\"relative\"><button type=\"button\" class=\"fb-picker fb-picker-op\" :class=\"{'fb-negated-text': isNegated(row.rule)}\" @click=\"toggleMenu(row.key + ':op')\" x-text=\"opLabelOf(row.rule)\"></button><div class=\"fb-menu\" x-show=\"openMenu === row.key + ':op'\" @click.outside=\"openMenu = ''\"><template x-for=\"o in opsFor(row.rule.field)\" :key=\"o.key\"><button type=\"button\" class=\"fb-menu-item\" :class=\"[row.rule.op === o.key ? 'fb-menu-item-active' : '', o.negated ? 'fb-negated-text' : '']\" @click=\"setRuleOp(row.path, o.key)\" x-text=\"o.label\"></button></template></div></div><!-- value cell: shape follows the operator + field kind --><template x-if=\"hasValueCell(row.rule) && valueArity(row.rule) === 'two'\"><span class=\"flex items-center gap-1\"><input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values[0] || ''\" @input.debounce.250ms=\"setRuleValue(row.path, 0, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" @click.outside=\"suggestionsOpen = ''\" placeholder=\"From\"> <span class=\"text-xs\" style=\"color: var(--text-secondary)\">and</span> <input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values[1] || ''\" @input.debounce.250ms=\"setRuleValue(row.path, 1, $el.value)\" placeholder=\"To\"></span></template><template x-if=\"hasValueCell(row.rule) && (valueArity(row.rule) === 'one' || valueArity(row.rule) === 'many')\"><span class=\"fb-value-cell relative flex items-center gap-1\"><input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values.join(',')\" @input.debounce.250ms=\"setRuleValue(row.path, 0, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" :placeholder=\"fieldMeta(row.rule.field)?.valueKind === 'days' ? 'days' : 'value'\"><template x-if=\"fieldMeta(row.rule.field)?.valueKind === 'days'\"><span class=\"text-xs whitespace-nowrap\" style=\"color: var(--text-secondary)\" x-text=\"'days'\"></span></template><!-- field-aware valueLine truncated
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 39, "</select></div><!-- The rule builder (faceted plan Phase 9): the drawer's\n\t\t\t\t\t\t\t\t\tONLY filter UI. Templ owns the look, Alpine owns the\n\t\t\t\t\t\t\t\t\trule-tree state (the sanctioned island — same pattern\n\t\t\t\t\t\t\t\t\tas the chips bar; server JSON rendered by Alpine, no\n\t\t\t\t\t\t\t\t\tinnerHTML templating). Rows are a flat projection of\n\t\t\t\t\t\t\t\t\tthe tree (depth = indent); groups nest via + group. --><div x-data=\"filterBuilderExtra\" x-cloak x-effect=\"filtersOpen === true && ensureReadyRule()\"><template x-for=\"row in builderRows\" :key=\"row.key\"><div><template x-if=\"row.type === 'groupOpen'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-1\" :style=\"`margin-left:${row.depth * 14}px`\"><span class=\"text-[11px] font-semibold uppercase tracking-wide\" style=\"color: var(--text-secondary)\" x-text=\"row.depth === 0 ? 'Match' : 'Group'\"></span> <span class=\"flex-1\"></span> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addRule(row.path)\">+ rule</button> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addGroup(row.path)\">+ group</button> <button type=\"button\" class=\"fb-mini-btn fb-danger\" @click=\"removeNode(row.path)\" aria-label=\"Remove group\">×</button></div></template><template x-if=\"row.type === 'rule'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-0.5\" :style=\"`margin-left:${(row.depth + 1) * 14}px`\"><button type=\"button\" class=\"fb-connective fb-connective-btn\" :class=\"row.chipClickable ? '' : 'fb-chip-static'\" x-show=\"!row.isFirst\" x-text=\"row.chip\" @click=\"if (row.chipClickable) toggleRuleConnective(row.path)\" :title=\"row.chipClickable ? 'Switch this rule between AND / OR' : 'This rule joins with ' + row.chip\"></button><!-- field picker: grouped menu --><div class=\"relative\"><button type=\"button\" class=\"fb-picker\" :class=\"{'fb-picker-active': row.rule.field !== ''}\" @click=\"toggleMenu(row.key + ':field')\" x-text=\"fieldLabelOf(row.rule.field)\"></button><div class=\"fb-menu fb-menu-fields\" x-show=\"openMenu === row.key + ':field'\" @click.outside=\"openMenu = ''\"><div class=\"fb-menu-filter-wrap\"><input type=\"text\" class=\"fb-menu-filter\" placeholder=\"Filter fields…\" x-model=\"fieldFilter\" @keydown.enter.prevent @click.stop></div><div class=\"fb-menu-scroll\"><template x-for=\"grp in visibleFieldGroups\" :key=\"grp.group\"><div><div class=\"fb-menu-group\" x-text=\"grp.group\"></div><template x-for=\"f in grp.fields\" :key=\"f.key\"><button type=\"button\" class=\"fb-menu-item\" :class=\"row.rule.field === f.key ? 'fb-menu-item-active' : ''\" @click=\"setRuleField(row.path, f.key)\" x-text=\"f.label\"></button></template></div></template><div class=\"fb-menu-empty\" x-show=\"visibleFieldGroups.length === 0\">No matching fields</div></div></div></div><!-- operator picker (negation lives here) --><div class=\"relative\"><button type=\"button\" class=\"fb-picker fb-picker-op\" :class=\"{'fb-negated-text': isNegated(row.rule)}\" @click=\"toggleMenu(row.key + ':op')\" x-text=\"opLabelOf(row.rule)\"></button><div class=\"fb-menu\" x-show=\"openMenu === row.key + ':op'\" @click.outside=\"openMenu = ''\"><template x-for=\"o in opsFor(row.rule.field)\" :key=\"o.key\"><button type=\"button\" class=\"fb-menu-item\" :class=\"[row.rule.op === o.key ? 'fb-menu-item-active' : '', o.negated ? 'fb-negated-text' : '']\" @click=\"setRuleOp(row.path, o.key)\" x-text=\"o.label\"></button></template></div></div><!-- value cell: shape follows the operator + field kind --><template x-if=\"hasValueCell(row.rule) && valueArity(row.rule) === 'two'\"><span class=\"flex items-center gap-1\"><input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values[0] || ''\" @input.debounce.250ms=\"setRuleValue(row.path, 0, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" @click.outside=\"suggestionsOpen = ''\" placeholder=\"From\"> <span class=\"text-xs\" style=\"color: var(--text-secondary)\">and</span> <input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values[1] || ''\" @input.debounce.250ms=\"setRuleValue(row.path, 1, $el.value)\" placeholder=\"To\"></span></template><template x-if=\"hasValueCell(row.rule) && (valueArity(row.rule) === 'one' || valueArity(row.rule) === 'many')\"><span class=\"fb-value-cell relative flex items-center gap-1\"><input type=\"text\" class=\"input fb-value\" :value=\"row.rule.values.join(',')\" @input.debounce.250ms=\"setRuleValue(row.path, 0, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" :placeholder=\"fieldMeta(row.rule.field)?.valueKind === 'days' ? 'days' : 'value'\"><template x-if=\"fieldMeta(row.rule.field)?.valueKind === 'days'\"><span class=\"text-xs whitespace-nowrap\" style=\"color: var(--text-secondary)\" x-text=\"'days'\"></span></template><!-- field-aware valueLine truncated
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -170,7 +170,7 @@ templ Series(user User, seriesList []SeriesCardData, libData []LibraryData, curr
 							</div>
 						}
 					}
-					<div id="series-grid" class="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-6 gap-6">
+					<div id="series-grid" class="grid grid-cols-3 md:grid-cols-4 lg:grid-cols-6 gap-6">
 						for _, series := range seriesList {
 							@SeriesCard(series)
 						}
@@ -344,7 +344,7 @@ func Series(user User, seriesList []SeriesCardData, libData []LibraryData, curre
 				}
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 29, "<div id=\"series-grid\" class=\"grid grid-cols-2 md:grid-cols-4 lg:grid-cols-6 gap-6\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 29, "<div id=\"series-grid\" class=\"grid grid-cols-3 md:grid-cols-4 lg:grid-cols-6 gap-6\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -0,0 +1,4 @@
+node_modules/
+package-lock.json
+test-results/
+playwright-report/
@@ -0,0 +1,24 @@
+# UI sweep coverage (plan §7.5)
+
+Gate: every line below executes for BOTH personas unless marked
+"admin-only". Status: ✅ swept+green · 🔲 pending (future sweep runs).
+
+| # | Page / control | admin | restricted |
+|---|---|---|---|
+| 1 | Login: bad password rejected; good login lands authed; logout | ✅ | ✅ |
+| 2 | Dashboard: sections render (Recently Added / Not Started) | ✅ | ✅ (hidden lib absent) |
+| 3 | Dashboard: hidden library visibility (Audiobooks) | ✅ visible | ✅ absent |
+| 4 | Search: results scoped (`/api/media-items/search`) | ✅ | ✅ no leaks |
+| 5 | Media list: no hidden items in payloads | ✅ | ✅ |
+| 6 | Library browse grid + pagination | 🔲 | 🔲 |
+| 7 | Library create / edit / delete (admin) | 🔲 | n/a |
+| 8 | Admin visibility toggle roundtrip (hide → restricted loses → unhide) | 🔲 | 🔲 |
+| 9 | Media detail: edit metadata / archive / delete | 🔲 | n/a |
+| 10 | Reader: open, page turn, TOC, bookmark, highlight, note, settings | 🔲 | 🔲 |
+| 11 | Collections: CRUD, add/remove items, smart-rule editor | 🔲 | 🔲 |
+| 12 | Series: list/detail | 🔲 | 🔲 |
+| 13 | Stats screens + range filters | 🔲 | 🔲 |
+| 14 | Admin: users CRUD, visibility matrix, settings toggles, processing issues | 🔲 | n/a |
+| 15 | Upload: EPUB generated at runtime, upload → appears → delete | 🔲 | n/a |
+| 16 | Auth edges: restricted → admin URL; anonymous → media URL | 🔲 | ✅ (detail/404) |
+| 17 | OPDS / KOReader | API-covered (invariant test) | API-covered |
@@ -0,0 +1,18 @@
+# tests/ui — Playwright sweep (plan §7.5)
+
+Real-browser sweep of the SSR/HTMX frontend. Dev server must be up on
+localhost:8765. Run inside the official image (no host browsers needed):
+
+```bash
+cd tests/ui
+docker run --rm --network host \
+  -v "$PWD":/work -w /work \
+  mcr.microsoft.com/playwright:v1.49.0 \
+  bash -c "npm install --no-audit --no-fund && npx playwright test"
+```
+
+Personas (see rls_sweep.spec.ts): `testuser` (admin) and `rls-phone`
+(restricted — Audiobooks hidden from them).
+
+Coverage: `COVERAGE.md` enumerates every swept page/control per the
+plan; new pages/controls get a line when added.
@@ -0,0 +1,11 @@
+{
+  "name": "bookhoard-ui-sweep",
+  "private": true,
+  "version": "1.0.0",
+  "scripts": {
+    "test": "playwright test"
+  },
+  "devDependencies": {
+    "@playwright/test": "1.49.0"
+  }
+}
@@ -0,0 +1,17 @@
+import { defineConfig } from "@playwright/test";
+
+// Full-sweep config (plan §7.5). The dev server must be up on
+// localhost:8765 (same precondition as the Go integration tests).
+// Run via the official Playwright image — see tests/ui/README.md.
+export default defineConfig({
+  testDir: ".",
+  timeout: 30_000,
+  retries: 0,
+  reporter: [["list"]],
+  use: {
+    baseURL: "http://localhost:8765",
+    trace: "retain-on-failure",
+    screenshot: "only-on-failure",
+    actionTimeout: 10_000,
+  },
+});
@@ -0,0 +1,99 @@
+import { expect, test, type Browser, type Page } from "@playwright/test";
+
+// Persona helpers: the two dev personas used across the sweep.
+// testuser  = admin, sees everything.
+// rls-phone = restricted user; the Audiobooks library is HIDDEN from
+// them (seeded by the rollout; see the RLS plan §7.5).
+//
+// Sessions are established ONCE per persona and reused via
+// storageState — the login endpoint rate-limits rapid attempts, and a
+// sweep should not look like a brute-force run.
+const PERSONAS = {
+  admin: { login: "testuser", password: "Test@Pass123!" },
+  restricted: { login: "rls-phone", password: "Test@Pass123!" },
+} as const;
+
+type Persona = keyof typeof PERSONAS;
+const stateCache: Partial<Record<Persona, string>> = {};
+
+async function authedPage(browser: Browser, persona: Persona): Promise<Page> {
+  if (!stateCache[persona]) {
+    const ctx = await browser.newContext();
+    const page = await ctx.newPage();
+    await page.goto("/login");
+    await page.fill('input[name="login"]', PERSONAS[persona].login);
+    await page.fill('input[name="password"]', PERSONAS[persona].password);
+    await page.click('button[type="submit"]');
+    await page.waitForLoadState("networkidle");
+    stateCache[persona] = await ctx.storageState();
+    await ctx.close();
+  }
+  const ctx = await browser.newContext({ storageState: stateCache[persona] });
+  return ctx.newPage();
+}
+
+// The restricted persona must never see Audiobooks content anywhere.
+const HIDDEN = "Audiobooks";
+
+test.describe("authentication", () => {
+  test("wrong password is rejected without a session", async ({ page }) => {
+    await page.goto("/login");
+    await page.fill('input[name="login"]', PERSONAS.admin.login);
+    await page.fill('input[name="password"]', "definitely-wrong");
+    await page.click('button[type="submit"]');
+    await page.waitForTimeout(1_500);
+    const cookies = await page.context().cookies();
+    expect(cookies.find((c) => c.name === "token" && c.value.length > 10)).toBeUndefined();
+  });
+});
+
+test.describe("admin persona sees everything", () => {
+  let page: Page;
+  test.beforeAll(async ({ browser }) => {
+    page = await authedPage(browser, "admin");
+  });
+
+  test("dashboard sections render with library content", async () => {
+    await page.goto("/dashboard");
+    const body = (await page.textContent("body")) ?? "";
+    expect(body).toContain("Recently Added");
+    expect(body).toContain("Not Started");
+    expect(body).toContain(HIDDEN); // admin sees the hidden-from-others library
+  });
+
+  test("search returns hidden-library titles for admin", async () => {
+    const resp = await page.goto("/api/media-items/search?query=Witcher");
+    expect(resp?.status()).toBe(200);
+    const body = (await page.textContent("body")) ?? "";
+    expect(body).toContain("Witcher");
+  });
+});
+
+test.describe("restricted persona: hidden means hidden", () => {
+  let page: Page;
+  test.beforeAll(async ({ browser }) => {
+    page = await authedPage(browser, "restricted");
+  });
+
+  test("dashboard never shows the hidden library or its items", async () => {
+    await page.goto("/dashboard");
+    expect((await page.textContent("body")) ?? "").toContain("Recently Added"); // real dashboard, not the landing page
+    const body = (await page.textContent("body")) ?? "";
+    expect(body).not.toContain(HIDDEN);
+  });
+
+  test("search results exclude hidden-library content", async () => {
+    const resp = await page.goto("/api/media-items/search?query=Witcher");
+    expect(resp?.status()).toBe(200);
+    const body = (await page.textContent("body")) ?? "";
+    // The Witcher audiobooks live in the hidden library — none may leak.
+    expect(body).not.toContain("Witcher");
+  });
+
+  test("media payloads exclude hidden-library items", async () => {
+    const resp = await page.goto("/api/media-items?limit=200");
+    expect(resp?.status()).toBe(200);
+    const body = (await page.textContent("body")) ?? "";
+    expect(body).not.toContain(HIDDEN);
+  });
+});
@@ -1,2 +1,2 @@
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