feat(filters): per-row AND/OR (Excel-style chips) + browse-on-click value menus (user report)

- Per-rule connectives: the chip before each rule flips that rule
  between AND and OR — OR-joined neighbors merge into an invisible
  OR-block, AND pulls them back out. The tree stays the single source
  of truth (implicit blocks are a client marker the server ignores),
  so deep links, saved filters, and the composed engine are untouched.
  Group-mode pills are gone; explicit groups remain as pure structure
  (+ group). Compile limit, same as Excel: flat chips express
  AND-of-OR-groups; a top-level OR of AND-blocks still needs nesting.
- Browse-on-click: clicking an empty value box now fetches the field's
  top values UNDER the other rules (blank typed = browse, not a
  similarity filter) — 'assign an author, click Publisher, see their
  publishers' without typing. Server: the composed suggestion engine
  trims the typed query; client: the >=2-char guard no longer blocks
  the empty query, browse limit 15 vs 8 while typing.
- Tests: the browse case pinned (blank sentinel + rules → the field's
  values under those rules, zero-match values absent).

cmd/server/tests/filter_builder_test.go

@@ -516,6 +516,16 @@ func TestFilterSuggestionsUnderRules(t *testing.T) {
 	require.Equal(t, http.StatusOK, status)
 	assert.NotContains(t, valuesOf(results), "Amara Voss", "zero-match values never offered")
 
+	// BROWSE (the user's click-the-box case): a blank typed query lists
+	// the field's top values UNDER the other rules — "assign an author,
+	// click publisher, see their publishers" without typing anything.
+	// The wire sends a single space as the sentinel.
+	status, results = suggest("genre", " ", qfAll(qfRule("author", "contains", "Quill")))
+	require.Equal(t, http.StatusOK, status)
+	assert.Contains(t, valuesOf(results), "fantasy", "browse shows the field's values under the rules")
+	assert.NotContains(t, valuesOf(results), "spacewestern", "zero-match values never offered")
+	assert.NotContains(t, valuesOf(results), "history", "values outside the rules never offered")
+
 	// Library field menu: visibility-scoped, id values + name display
 	// (this test's fixture libraries are named "Test Builder Sug …").
 	status, results = suggest("library", "Test Builder", "")

internal/services/filter_query.go

@@ -863,6 +863,10 @@ func (s *SearchService) ComposedFieldValues(ctx context.Context, p ComposedSugge
 	if p.Limit <= 0 {
 		p.Limit = 50
 	}
+	// A blank typed query means BROWSE (the user clicked the value box
+	// to see what exists under the other rules) — not a similarity
+	// filter for a single space.
+	p.Typed = strings.TrimSpace(p.Typed)
 
 	b := newFilterBuilder(p.UserID)
 	typedBind := b.bind(p.Typed)

templates/bookshelf.templ

@@ -183,9 +183,7 @@ templ BookShelf(
 										<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:${row.depth * 14}px`">
-													<span class="text-[11px] font-semibold uppercase tracking-wide" style="color: var(--text-secondary)" x-text="'Match'"></span>
-													<button type="button" class="fb-mode-btn" :class="row.group.mode === 'all' ? 'fb-mode-active' : ''" @click="setGroupMode(row.path, 'all')" title="Every rule in this group must match">AND</button>
-													<button type="button" class="fb-mode-btn" :class="row.group.mode === 'any' ? 'fb-mode-active' : ''" @click="setGroupMode(row.path, 'any')" title="Any rule in this group can match">OR</button>
+													<span class="text-[11px] font-semibold uppercase tracking-wide" style="color: var(--text-secondary)" x-text="row.depth === 0 ? 'Match' : 'Group'"></span>
 													<span class="flex-1"></span>
 													<button type="button" class="fb-mini-btn" @click="addRule(row.path)">+ rule</button>
 													<button type="button" class="fb-mini-btn" @click="addGroup(row.path)">+ group</button>
@@ -194,7 +192,7 @@ templ BookShelf(
 											</template>
 											<template x-if="row.type === 'rule'">
 												<div :class="row.depth > 0 ? 'fb-nested' : ''" class="flex items-center gap-1.5 flex-wrap py-0.5" :style="`margin-left:${(row.depth + 1) * 14}px`">
-													<button type="button" class="fb-connective fb-connective-btn" x-show="!row.isFirst" x-text="row.connective" @click="toggleGroupMode(row.path.slice(0, -1))" title="Switch this group between AND / OR"></button>
+													<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>

templates/bookshelf_templ.go

@@ -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=\"if (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:${row.depth * 14}px`\"><span class=\"text-[11px] font-semibold uppercase tracking-wide\" style=\"color: var(--text-secondary)\" x-text=\"'Match'\"></span> <button type=\"button\" class=\"fb-mode-btn\" :class=\"row.group.mode === 'all' ? 'fb-mode-active' : ''\" @click=\"setGroupMode(row.path, 'all')\" title=\"Every rule in this group must match\">AND</button> <button type=\"button\" class=\"fb-mode-btn\" :class=\"row.group.mode === 'any' ? 'fb-mode-active' : ''\" @click=\"setGroupMode(row.path, 'any')\" title=\"Any rule in this group can match\">OR</button> <span class=\"flex-1\"></span> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addRule(row.path)\">+ rule</button> <button type=\"button\" class=\"fb-mini-btn\" @click=\"addGroup(row.path)\">+ group</button> <button type=\"button\" class=\"fb-mini-btn fb-danger\" @click=\"removeNode(row.path)\" aria-label=\"Remove group\">×</button></div></template><template x-if=\"row.type === 'rule'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-0.5\" :style=\"`margin-left:${(row.depth + 1) * 14}px`\"><button type=\"button\" class=\"fb-connective fb-connective-btn\" x-show=\"!row.isFirst\" x-text=\"row.connective\" @click=\"toggleGroupMode(row.path.slice(0, -1))\" title=\"Switch this group between AND / OR\"></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\" 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><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><!-- 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=\"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, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" @click.outside=\"suggestionsOpen = ''\" :placeholder=\"fieldMeta(row.rule.field)?.valueKiLine truncated
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 39, "</select></div><!-- The rule builder (faceted plan Phase 9): the drawer's\n\t\t\t\t\t\t\t\t\tONLY filter UI. Templ owns the look, Alpine owns the\n\t\t\t\t\t\t\t\t\trule-tree state (the sanctioned island — same pattern\n\t\t\t\t\t\t\t\t\tas the chips bar; server JSON rendered by Alpine, no\n\t\t\t\t\t\t\t\t\tinnerHTML templating). Rows are a flat projection of\n\t\t\t\t\t\t\t\t\tthe tree (depth = indent); groups nest via + group. --><div x-data=\"filterBuilderExtra\" x-cloak x-effect=\"if (filtersOpen === true) { ensureReadyRule(); }\"><template x-for=\"row in builderRows\" :key=\"row.key\"><div><template x-if=\"row.type === 'groupOpen'\"><div :class=\"row.depth > 0 ? 'fb-nested' : ''\" class=\"flex items-center gap-1.5 flex-wrap py-1\" :style=\"`margin-left:${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\" 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><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><!-- 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=\"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)\" @click.outside=\"suggestionsOpen = ''\" :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=\"valueArity(row.rule) === 'one' && fieldMeta(row.rule.field)?.valueKLine truncated
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -422,7 +422,7 @@ func BookShelf(
 			var templ_7745c5c3_Var20 string
 			templ_7745c5c3_Var20, templ_7745c5c3_Err = templ.JoinStringErrs(errorMessage)
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 306, Col: 59}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 304, Col: 59}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var20))
 			if templ_7745c5c3_Err != nil {
@@ -445,7 +445,7 @@ func BookShelf(
 			var templ_7745c5c3_Var21 string
 			templ_7745c5c3_Var21, templ_7745c5c3_Err = templ.ResolveAttributeValue(fmt.Sprintf("/api/media-items/search?library_id=%s&limit=%d&offset=%d", currentLibraryID, limit, offset-limit))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 315, Col: 126}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 313, Col: 126}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var21)
 			if templ_7745c5c3_Err != nil {
@@ -476,7 +476,7 @@ func BookShelf(
 			var templ_7745c5c3_Var22 string
 			templ_7745c5c3_Var22, templ_7745c5c3_Err = templ.JoinStringErrs(offset/limit + 1)
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 324, Col: 32}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 322, Col: 32}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var22))
 			if templ_7745c5c3_Err != nil {
@@ -489,7 +489,7 @@ func BookShelf(
 			var templ_7745c5c3_Var23 string
 			templ_7745c5c3_Var23, templ_7745c5c3_Err = templ.ResolveAttributeValue(fmt.Sprintf("/api/media-items/search?library_id=%s&limit=%d&offset=%d", currentLibraryID, limit, offset+limit))
 			if templ_7745c5c3_Err != nil {
-				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 329, Col: 126}
+				return templ.Error{Err: templ_7745c5c3_Err, FileName: `bookshelf.templ`, Line: 327, Col: 126}
 			}
 			_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var23)
 			if templ_7745c5c3_Err != nil {

web/src/filter_builder.ts

@@ -224,6 +224,10 @@ export interface FilterRuleState {
 export interface FilterGroupState {
   mode: "all" | "any";
   children: (FilterRuleState | FilterGroupState)[];
+  // Client-side marker: an OR-block built by the per-row connective
+  // chips (Excel-style rows). Invisible in the UI — its children render
+  // as one flat list; the server ignores the extra JSON key.
+  implicit?: boolean;
 }
 
 export const isRule = (n: FilterRuleState | FilterGroupState): n is FilterRuleState =>
@@ -319,7 +323,9 @@ function pruneIncomplete(
     children.push({ field: child.field, op: child.op, values: [kept.join(",")] });
   });
   if (children.length === 0) return null;
-  return { mode: group.mode, children };
+  const out: FilterGroupState = { mode: group.mode, children };
+  if (group.implicit) out.implicit = true;
+  return out;
 }
 
 // ─── row projection (flat rendering of the nested tree) ─────────────
@@ -329,7 +335,11 @@ export interface BuilderRow {
   path: number[];
   type: "rule" | "groupOpen" | "groupClose";
   depth: number;
-  connective: "AND" | "OR";
+  // How this row joins the row above: AND | OR. Clickable on rules
+  // where toggling restructures the tree (Excel-style per-row
+  // connective); static on group boundaries and first rows.
+  chip: "AND" | "OR";
+  chipClickable: boolean;
   isFirst: boolean;
   rule?: FilterRuleState;
   group?: FilterGroupState;
@@ -344,34 +354,68 @@ function projectRows(
   group.children.forEach((child, idx) => {
     const childPath = [...path, idx];
     const key = childPath.join("-");
+    // The slot chip: how this child joins the row above it.
+    const slotChip: "AND" | "OR" =
+      idx === 0 || group.mode === "all" ? "AND" : "OR";
     if (!isRule(child)) {
+      const g = child as FilterGroupState;
+      if (g.implicit) {
+        // Invisible OR-block: its children continue the flat list —
+        // the first inherits this slot's chip, the rest are ORs.
+        g.children.forEach((sub, j) => {
+          const subPath = [...childPath, j];
+          const subKey = subPath.join("-");
+          if (!isRule(sub)) {
+            return; // implicit blocks hold rules only
+          }
+          out.push({
+            key: subKey,
+            path: subPath,
+            type: "rule",
+            depth,
+            chip: j === 0 ? slotChip : "OR",
+            chipClickable: j > 0,
+            isFirst: idx === 0 && j === 0,
+            rule: sub,
+          });
+        });
+        return;
+      }
       out.push({
         key,
         path: childPath,
         type: "groupOpen",
         depth,
-        connective: group.mode === "all" ? "AND" : "OR",
+        chip: slotChip,
+        chipClickable: false,
         isFirst: idx === 0,
-        group: child,
+        group: g,
       });
-      projectRows(child, childPath, depth + 1, out);
+      projectRows(g, childPath, depth + 1, out);
       out.push({
         key: key + "-close",
         path: childPath,
         type: "groupClose",
         depth,
-        connective: group.mode === "all" ? "AND" : "OR",
+        chip: slotChip,
+        chipClickable: false,
         isFirst: idx === 0,
-        group: child,
+        group: g,
       });
       return;
     }
+    const prev = group.children[idx - 1];
+    const clickable =
+      idx > 0 &&
+      !!prev &&
+      (isRule(prev) || !!(prev as FilterGroupState).implicit);
     out.push({
       key,
       path: childPath,
       type: "rule",
       depth,
-      connective: group.mode === "all" ? "AND" : "OR",
+      chip: slotChip,
+      chipClickable: clickable,
       isFirst: idx === 0,
       rule: child,
     });
@@ -471,7 +515,7 @@ export function filterBuilderData() {
       const parent = this.nodeAt(path);
       if (!parent || !("children" in parent)) return;
       (parent as FilterGroupState).children.push({
-        mode: "any",
+        mode: "all",
         children: [{ field: "author", op: "contains", values: [] }],
       });
       this._touch();
@@ -486,19 +530,54 @@ export function filterBuilderData() {
       if (this.openMenu.startsWith(path.join("-") + ":")) this.openMenu = "";
       this._touch();
     },
-    setGroupMode(path: number[], mode: "all" | "any"): void {
-      const node = this.nodeAt(path);
-      if (!node || !("children" in node)) return;
-      (node as FilterGroupState).mode = mode;
-      this._touch();
-    },
-    // toggleGroupMode flips a group between AND and OR (the clickable
-    // connective between rules targets its parent group).
-    toggleGroupMode(parentPath: number[]): void {
-      const node = this.nodeAt(parentPath);
-      if (!node || !("children" in node)) return;
-      const group = node as FilterGroupState;
-      group.mode = group.mode === "all" ? "any" : "all";
+    // toggleRuleConnective — Excel-style per-row AND/OR. Clicking the
+    // chip before a rule flips how THAT rule joins the row above:
+    // AND → OR moves it into an implicit OR-block with the previous
+    // rule(s); OR → AND pulls it back out to the top level. The tree
+    // stays the single source of truth; nothing else changes.
+    toggleRuleConnective(rulePath: number[]): void {
+      const parentPath = rulePath.slice(0, -1);
+      const parent = this.nodeAt(parentPath);
+      if (!parent || !("children" in parent)) return;
+      const list = parent as FilterGroupState;
+      const idx = rulePath[rulePath.length - 1];
+      const rule = list.children[idx];
+      if (!rule || !isRule(rule)) return;
+
+      if (list.implicit) {
+        // OR → AND: pull the rule out of the OR-block, re-inserting it
+        // right after the block at the parent level.
+        const gpPath = parentPath.slice(0, -1);
+        const gp = this.nodeAt(gpPath);
+        if (!gp || !("children" in gp)) return;
+        const gpList = gp as FilterGroupState;
+        const blockIdx = parentPath[parentPath.length - 1];
+        list.children.splice(idx, 1);
+        gpList.children.splice(blockIdx + 1, 0, rule);
+        if (list.children.length === 1) {
+          gpList.children.splice(blockIdx, 1, list.children[0]);
+        } else if (list.children.length === 0) {
+          gpList.children.splice(blockIdx, 1);
+        }
+      } else {
+        // AND → OR: join the previous sibling rule / OR-block.
+        if (idx === 0) return;
+        const prev = list.children[idx - 1];
+        if (!prev) return;
+        if (isRule(prev)) {
+          const block: FilterGroupState = {
+            mode: "any",
+            implicit: true,
+            children: [prev, rule],
+          };
+          list.children.splice(idx - 1, 2, block);
+        } else if ((prev as FilterGroupState).implicit) {
+          (prev as FilterGroupState).children.push(rule);
+          list.children.splice(idx, 1);
+        } else {
+          return; // previous is an explicit group: no row-level toggle
+        }
+      }
       this._touch();
     },
     setRuleField(path: number[], key: string): void {
@@ -613,8 +692,12 @@ export function filterBuilderData() {
       if (!meta || !meta.suggest) return;
       // Fixed-option fields never hit the server.
       if (meta.valueKind === "fixed") return;
-      const typed = rule.values[0] ?? "";
-      if (typed.trim().length < 2 && meta.valueKind !== "id") return;
+      const typed = (rule.values[0] ?? "").trim();
+      // 1 char is too little to filter on; EMPTY means BROWSE — the
+      // user clicked the box to see the field's top values under the
+      // other rules (the server answers the blank query with the
+      // un-typed top list).
+      if (typed.length === 1) return;
       const token = localStorage.getItem("token");
       if (!token) return;
       // Symmetry: the tree sent EXCLUDES the rule being edited — the
@@ -622,13 +705,15 @@ export function filterBuilderData() {
       // rules are not filters; sending them would be a 400).
       const others = this.completedTree(path);
       const params = new URLSearchParams();
-      params.set(rule.field, typed.trim() || " ");
+      params.set(rule.field, typed || " ");
       if (others) params.set("qf", JSON.stringify(others));
       const currentLibraryId = (
         document.getElementById("library-select") as HTMLSelectElement
       )?.value;
       if (currentLibraryId) params.set("library_id", currentLibraryId);
-      params.set("limit", "8");
+      // Browse (no typing) shows a slightly wider window than filter-
+      // as-you-type.
+      params.set("limit", typed ? "8" : "15");
       try {
         const response = await fetch(`/api/media-items/search?${params.toString()}`, {
           headers: { Authorization: `Bearer ${token}` },

web/static/input.css

@@ -2080,3 +2080,8 @@
     color: var(--accent);
     border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
   }
+  .fb-chip-static {
+    border-style: solid;
+    opacity: 0.7;
+    cursor: default;
+  }

web/static/style.css

@@ -1,2 +1,2 @@
 *,:after,:before{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }
-/*! tailwindcss v3.4.19 | MIT License | https://tailwindcss.com*/*,:after,:before{box-sizing:border-box;border:0 solid #e5e7eb}:after,:before{--tw-content:""}:host,html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,sans-serif,Noto Sans SC,Noto Sans TC,Noto Sans JP,Noto Sans KR,PingFang SC,Microsoft YaHei,Hiragino Sans,Apple SD Gothic Neo,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier 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var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow);border-color:#2563eb}input::-moz-placeholder,textarea::-moz-placeholder{color:#6b7280;opacity:1}input::placeholder,textarea::placeholder{color:#6b7280;opacity:1}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-date-and-time-value{min-height:1.5em;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit,::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-meridiem-field,::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-minute-field,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-second-field,::-webkit-datetime-edit-year-field{padding-top:0;padding-bottom:0}select{background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath Line truncated
+/*! tailwindcss v3.4.19 | MIT License | https://tailwindcss.com*/*,:after,:before{box-sizing:border-box;border:0 solid #e5e7eb}:after,:before{--tw-content:""}:host,html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,sans-serif,Noto Sans SC,Noto Sans TC,Noto Sans JP,Noto Sans KR,PingFang SC,Microsoft YaHei,Hiragino Sans,Apple SD Gothic Neo,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier 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