feat(filter-builder): multi-pick values render as removable chips

The id-kind value cells (feed/library/collection/added_by) rendered
their picks as one comma-joined string inside a 9rem-wide input — you
saw the first label and nothing else, and reading 3-5 picks meant
scrolling inside a tiny box (worst on mobile, user request 2026-11-01).

Id-kind cells now render a chipbox: each picked value is a chip (label
truncated with a hover title, removable via an X button with a finger-
sized tap target), the box flex-wraps and grows vertically instead of
clipping, and the inline input stays at the end for typing/searching —
including the Backspace-on-empty-removes-last-chip affordance. Text/
number/date cells keep today's single input; the value menu is
unchanged (it never offers an already-picked value, so the chip X is
the faster removal path, not a new one).

Presentation only: the stored wire is still one comma-joined value per
rule; matching, menus, apply, and label resolution are untouched. Pins
moved from valueCellText (now text-cells-only) to the chip model
(idChipsFor/idDraftFor) and cover removal order, last-chip removal, and
Backspace; 187 web tests green.

templates/filter_builder.templ

@@ -59,11 +59,29 @@ templ FilterBuilderRows(countNoun string) {
 														</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">
+														<span class="fb-value-cell relative flex items-center gap-1" :class="isIdValueRow(row.path) ? 'fb-chipbox flex-wrap' : ''">
+															<template x-if="isIdValueRow(row.path)">
+																<span class="contents">
+																	<!-- picked values as removable chips: the box
+																		wraps and grows instead of a 9rem input
+																		you can't read past the first entry -->
+																	<template x-for="chip in idChipsFor(row.path)" :key="chip.id">
+																		<span class="fb-chip" :title="chip.label">
+																			<span class="fb-chip-label" x-text="chip.label"></span>
+																			<button type="button" class="fb-chip-x" :aria-label="'Remove ' + chip.label" @click="removeIdChip(row.path, chip.id)">×</button>
+																		</span>
+																	</template>
+																	<input type="text" class="fb-value fb-chip-input" :value="idDraftFor(row.path)" @input.debounce.250ms="onValueCellInput(row.path, $el.value)" @focus="openValueMenu(row.key, row.path, row.rule)" @keydown="chipInputKeydown(row.path, $event)" :placeholder="valuePlaceholderFor(row.rule)" :aria-label="fieldLabelOf(row.rule.field) + ' values'"/>
+																</span>
+															</template>
+															<template x-if="!isIdValueRow(row.path)">
+																<span class="contents">
 																	<input type="text" class="input fb-value" :value="valueCellText(row.path)" @input.debounce.250ms="onValueCellInput(row.path, $el.value)" @focus="openValueMenu(row.key, row.path, row.rule)" :placeholder="valuePlaceholderFor(row.rule)"/>
 																	<template x-if="fieldIsDays(row.rule.field)">
 																		<span class="text-xs whitespace-nowrap" style="color: var(--text-secondary)" x-text="'days'"></span>
 																	</template>
+																</span>
+															</template>
 															<!-- field-aware value menu: server JSON (the other
 																rules bound), or the field's fixed options.
 																Clicks anywhere inside the value cell never close

templates/filter_builder_templ.go

@@ -35,14 +35,14 @@ func FilterBuilderRows(countNoun string) templ.Component {
 			templ_7745c5c3_Var1 = templ.NopComponent
 		}
 		ctx = templ.ClearChildren(ctx)
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 1, "<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=\"toggleConnective(row)\" :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=\"valueCellText(row.path)\" @input.debounce.250ms=\"onValueCellInput(row.path, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" :placeholder=\"valuePlaceholderFor(row.rule)\"><template x-if=\"fieldIsDays(row.rule.field)\"><span class=\"text-xs whitespace-nowrap\" style=\"color: var(--text-secondary)\" x-text=\"'days'\"></span></template><!-- field-aware value menu: server JSON (the other\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\trules bound), or the field's fixed options.\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tClicks anywhere inside the value cell never close\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tit — the opening focus-click must not race the\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\toutside handler. --><div class=\"fb-menu fb-menu-value\" x-show=\"suggestionShown(row.key)\" @click.outside=\"dismissSuggestions($event)\"><template x-for=\"s in (suggestions[row.key] || [])\" :key=\"s.value\"><button type=\"button\" class=\"fb-menu-item\" @click=\"pickSuggestion(row.key, row.path, s)\"><spaLine truncated
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 1, "<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=\"toggleConnective(row)\" :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\" :class=\"isIdValueRow(row.path) ? 'fb-chipbox flex-wrap' : ''\"><template x-if=\"isIdValueRow(row.path)\"><span class=\"contents\"><!-- picked values as removable chips: the box\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\twraps and grows instead of a 9rem input\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tyou can't read past the first entry --><template x-for=\"chip in idChipsFor(row.path)\" :key=\"chip.id\"><span class=\"fb-chip\" :title=\"chip.label\"><span class=\"fb-chip-label\" x-text=\"chip.label\"></span> <button type=\"button\" class=\"fb-chip-x\" :aria-label=\"'Remove ' + chip.label\" @click=\"removeIdChip(row.path, chip.id)\">×</button></span></template><input type=\"text\" class=\"fb-value fb-chip-input\" :value=\"idDraftFor(row.path)\" @input.debounce.250ms=\"onValueCellInput(row.path, $el.value)\" @focus=\"openValueMenu(row.key, row.path, row.rule)\" @keydown=\"chipInputKeydown(row.path, $event)\" :placeholder=\"valuePlaceholderFor(row.rule)\" :aria-label=\"fieldLabelOf(row.rule.field) + ' values'\"></span></template><template x-ifLine truncated
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
 		var templ_7745c5c3_Var2 string
 		templ_7745c5c3_Var2, templ_7745c5c3_Err = templ.ResolveAttributeValue("matchCountLoading ? 'counting…' : (matchCount === 1 ? '1 " + countNoun + " matches' : matchCount + ' " + countNoun + "s match')")
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `filter_builder.templ`, Line: 101, Col: 238}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `filter_builder.templ`, Line: 119, Col: 238}
 		}
 		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var2)
 		if templ_7745c5c3_Err != nil {

web/src/filter_builder.test.ts

@@ -380,7 +380,47 @@ describe("id-kind value cells", () => {
       children: [{ field: "library", op: "in", values: ["lib-1"] }],
     };
     c.idLabels["lib-1"] = "Books";
-    expect(c.valueCellText([0])).toBe("Books");
+    expect(c.idChipsFor([0])).toEqual([{ id: "lib-1", label: "Books" }]);
+  });
+
+  it("removing a chip drops exactly that id, order preserved", () => {
+    const c = filterBuilderData();
+    c.filterTree = {
+      mode: "all",
+      children: [{ field: "library", op: "in", values: ["lib-1,lib-2,lib-3"] }],
+    };
+    c.idLabels["lib-1"] = "Books";
+    c.idLabels["lib-2"] = "Comics";
+    c.idLabels["lib-3"] = "Manga";
+    c.removeIdChip([0], "lib-2");
+    expect(c.filterTree.children[0] as FilterRuleState).toEqual({
+      field: "library",
+      op: "in",
+      values: ["lib-1,lib-3"],
+    });
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Books", "Manga"]);
+    // removing the LAST chip leaves the rule with no values (the menu
+    // toggle-off behaves the same way)
+    c.removeIdChip([0], "lib-1");
+    c.removeIdChip([0], "lib-3");
+    expect((c.filterTree.children[0] as FilterRuleState).values).toEqual([]);
+    expect(c.idChipsFor([0])).toEqual([]);
+  });
+
+  it("Backspace on an empty chip input removes the last chip", () => {
+    const c = filterBuilderData();
+    c.filterTree = {
+      mode: "all",
+      children: [{ field: "library", op: "in", values: ["lib-1,lib-2"] }],
+    };
+    const empty = { key: "Backspace", target: { value: "" } } as unknown as KeyboardEvent;
+    const typing = { key: "Backspace", target: { value: "com" } } as unknown as KeyboardEvent;
+    c.chipInputKeydown([0], typing);
+    expect((c.filterTree.children[0] as FilterRuleState).values).toEqual(["lib-1,lib-2"]);
+    c.chipInputKeydown([0], empty);
+    expect((c.filterTree.children[0] as FilterRuleState).values).toEqual(["lib-1"]);
+    c.chipInputKeydown([0], empty);
+    expect((c.filterTree.children[0] as FilterRuleState).values).toEqual([]);
   });
 
   it("typing drafts a NAME filter and never writes into the rule's ids", () => {
@@ -396,7 +436,7 @@ describe("id-kind value cells", () => {
       op: "in",
       values: ["lib-1"],
     });
-    expect(c.valueCellText([0])).toBe("boo");
+    expect(c.idDraftFor([0])).toBe("boo");
   });
 
   it("picking toggles the id and flips the cell back to labels", () => {
@@ -409,7 +449,8 @@ describe("id-kind value cells", () => {
     c.onValueCellInput([0], "com");
     c.pickSuggestion("0", [0], { value: "lib-2", display: "Comics", count: 3 });
     expect((c.filterTree.children[0] as FilterRuleState).values).toEqual(["lib-1,lib-2"]);
-    expect(c.valueCellText([0])).toBe("Books, Comics");
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Books", "Comics"]);
+    expect(c.idDraftFor([0])).toBe("");
   });
 
   it("a freshly ingested tree resolves stored ids to labels (the Apply reload)", async () => {
@@ -433,7 +474,7 @@ describe("id-kind value cells", () => {
     await vi.waitFor(() => expect(c.idLabels["lib-9"]).toBe("Ebooks"));
     // the stored id rides as the typed lookup
     expect(url).toContain("library=lib-9");
-    expect(c.valueCellText([0])).toBe("Ebooks");
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Ebooks"]);
     // label resolution never opens a menu
     expect(c.suggestionsOpen).toBe("");
     vi.unstubAllGlobals();
@@ -472,7 +513,8 @@ describe("id-kind value cells", () => {
     c.idLabels["lib-1"] = "Books";
     c.pickSuggestion("0", [0], { value: "lib-2", display: "Comics", count: 2 });
     expect((c.filterTree.children[0] as FilterRuleState).values).toEqual(["lib-1,lib-2"]);
-    expect(c.valueCellText([0])).toBe("Books, Comics");
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Books", "Comics"]);
+    expect(c.idDraftFor([0])).toBe("");
   });
 
   it("the id-cell placeholder is uniform — one name per field, no per-op distinction", () => {
@@ -541,7 +583,7 @@ describe("init: embedded labels + form hydration", () => {
     (c as unknown as { $el: HTMLElement }).$el = el;
     c.init();
     expect(c.filterTree.children).toHaveLength(1);
-    expect(c.valueCellText([0])).toBe("Comics");
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Comics"]);
     expect(fetchSpy).not.toHaveBeenCalled();
   });
 
@@ -566,7 +608,7 @@ describe("init: embedded labels + form hydration", () => {
     // could not reach this component), and the cell shows the embedded
     // label, not the raw id.
     expect(c.filterTree.children).toEqual([{ field: "library", op: "is", values: ["lib-1"] }]);
-    expect(c.valueCellText([0])).toBe("Comics");
+    expect(c.idChipsFor([0]).map((ch) => ch.label)).toEqual(["Comics"]);
     expect(fetchSpy).not.toHaveBeenCalled();
   });
 });

web/src/filter_builder.ts

@@ -768,22 +768,62 @@ export function filterBuilderData() {
       return FIELD_BY_KEY.get(node.field)?.valueKind === "id";
     },
 
-    // valueCellText — what the value INPUT displays. Id-kind rules keep
+    // idChipsFor — the chipbox's chips: the rule's joined values split
-    // the ids in rule.values (the clause matches ids); the cell shows
+    // and labeled through idLabels (raw id fallback while resolution is
-    // their LABELS, or the name text being typed.
+    // in flight or impossible).
-    valueCellText(path: number[]): string {
+    idChipsFor(path: number[]): { id: string; label: string }[] {
       const node = this.nodeAt(path);
-      if (!node || !isRule(node)) return "";
+      if (!node || !isRule(node)) return [];
-      if (this.isIdValueRow(path)) {
-        const draft = this.idDrafts[path.join("-")];
-        if (draft !== undefined) return draft;
       return node.values
         .join(",")
         .split(",")
         .filter(Boolean)
-          .map((v) => this.idLabels[v] ?? v)
+        .map((v) => ({ id: v, label: this.idLabels[v] ?? v }));
-          .join(", ");
+    },
-      }
+
+    // idDraftFor — the chipbox's inner input shows ONLY the typing
+    // draft; labels live on the chips.
+    idDraftFor(path: number[]): string {
+      return this.idDrafts[path.join("-")] ?? "";
+    },
+
+    // removeIdChip — drop one picked id from the rule's joined values
+    // (order preserved) and refresh the match count. The suggestion
+    // menu never offers a picked value; the chip × is the faster
+    // affordance.
+    removeIdChip(path: number[], id: string): void {
+      const node = this.nodeAt(path);
+      if (!node || !isRule(node)) return;
+      const rest = node.values
+        .join(",")
+        .split(",")
+        .filter((v) => v && v !== id);
+      node.values = rest.length ? [rest.join(",")] : [];
+      this._touch();
+    },
+
+    // chipInputKeydown — Backspace on an EMPTY chip input removes the
+    // last chip (standard chip-box affordance); any typing keeps the
+    // normal draft flow.
+    chipInputKeydown(path: number[], event: KeyboardEvent): void {
+      if (event.key !== "Backspace") return;
+      const el = event.target as HTMLInputElement | null;
+      if (el && el.value !== "") return;
+      const node = this.nodeAt(path);
+      if (!node || !isRule(node)) return;
+      const ids = node.values.join(",").split(",").filter(Boolean);
+      if (ids.length === 0) return;
+      ids.pop();
+      node.values = ids.length ? [ids.join(",")] : [];
+      this._touch();
+    },
+
+    // valueCellText — what a NON-id value input displays (text/number
+    // cells write straight through). Id-kind cells render chips
+    // (idChipsFor) — their input carries only the typing draft.
+    valueCellText(path: number[]): string {
+      const node = this.nodeAt(path);
+      if (!node || !isRule(node)) return "";
       return node.values.join(",");
     },
 

web/static/input.css

@@ -1958,6 +1958,66 @@
     font-size: 0.8rem;
     padding: 0.3rem 0.5rem;
   }
+  /* chip-style multi-value box (id-kind cells): picked values render as
+     removable tags, the box wraps and grows instead of a 9rem input;
+     the inline input stays for typing/searching */
+  .fb-chipbox {
+    flex: 1 1 12rem;
+    min-width: 0;
+    max-width: 100%;
+    min-height: 2.25rem;
+    padding: 0.2rem 0.4rem;
+    border-radius: 0.5rem;
+    border: 1px solid var(--border);
+    background-color: var(--bg-primary);
+    cursor: text;
+  }
+  .fb-chipbox:focus-within {
+    border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
+  }
+  .fb-chip {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.1rem;
+    max-width: 100%;
+    padding: 0.05rem 0.1rem 0.05rem 0.5rem;
+    border-radius: 9999px;
+    background-color: var(--accent-muted);
+    color: var(--accent);
+    font-size: 0.78rem;
+    line-height: 1.5;
+  }
+  .fb-chip-label {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .fb-chip-x {
+    display: inline-grid;
+    place-items: center;
+    width: 1.5rem;
+    height: 1.5rem;
+    flex-shrink: 0;
+    border: 0;
+    border-radius: 9999px;
+    background-color: transparent;
+    color: inherit;
+    font-size: 0.9rem;
+    line-height: 1;
+    cursor: pointer;
+  }
+  .fb-chip-x:hover {
+    background-color: color-mix(in srgb, var(--text-primary) 12%, transparent);
+  }
+  .fb-chip-input {
+    flex: 1 1 6ch;
+    min-width: 6ch;
+    width: auto;
+    border: 0;
+    background-color: transparent;
+    padding: 0.2rem 0.25rem;
+    outline: none;
+  }
   .fb-menu {
     position: absolute;
     z-index: 60;

web/static/style.css

@@ -1,2 +1,2 @@
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+/*! 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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