feat(missing-precedents): bridge cited-by-chair + decision number; open/closed tabs; single-line citation

Implements the chair-approved redesign of /missing-precedents (Claude Design
card 09). The "צוטט ע״י" and "תיק" columns were empty for ~98% of rows because
the corpus-decision reliance lives in precedent_internal_citations (keyed to
case_law), a different system than missing_precedents (keyed to cases).

Backend (G2 — read-time bridge, no stored duplication):
- list_missing_precedents: new cited_by_chairs / cited_by_decisions columns,
  resolved from the citation graph by normalized docket number (same
  normalization the relinker uses). For an open gap cited by committee
  decisions, surfaces the chair(s) (e.g. דפנה תמיר) + the deciding case numbers.

Frontend (matches approved mockup):
- "צוטט ע״י" shows the chair chip (bridge) with priority over the generic
  discovery-source chips; "תיק" shows the deciding decision number(s) + "+N".
- Status filter reduced to פתוח / נסגר (removed הועלה, לא-רלוונטי, הכל).
- "פסיקה" column collapses to a single line when case_name is empty — fixes the
  duplicated-citation two-row rendering.
- Lifecycle note simplified to open → closed.

Verified: bridge SQL returns chair+decisions on live data; tsc --noEmit clean;
py_compile clean.

Follow-up (data, separate): LLM backfill of legal_topic (נושא); create
missing_precedents rows for the 28 graph-cited rulings not yet tracked.

Invariants: G2 (single source of truth — bridge derived at read, no duplicated
column) · INV-AH context (closing source gaps).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web-ui/src/app/missing-precedents/page.tsx

@@ -22,12 +22,12 @@ import { MissingPrecedentsTable } from "@/components/missing-precedents/missing-
 
 type StatusFilter = MissingPrecedentStatus | "all";
 
+// Only the two states the chair acts on: open gaps to fill, and closed gaps for
+// reference. "הועלה" (transient) and "לא-רלוונטי" were dropped from the filter,
+// and "הכל" with them (chair's request, design 09).
 const STATUS_CHIPS: { value: StatusFilter; label: string }[] = [
   { value: "open", label: "פתוח" },
-  { value: "uploaded", label: "הועלה" },
   { value: "closed", label: "נסגר" },
-  { value: "irrelevant", label: "לא-רלוונטי" },
-  { value: "all", label: "הכל" },
 ];
 
 export default function MissingPrecedentsPage() {
@@ -145,15 +145,13 @@ export default function MissingPrecedentsPage() {
         <div className="rounded-lg border border-rule bg-parchment px-5 py-3.5 text-[0.82rem] text-ink-muted leading-7">
           <b className="text-ink-soft">מחזור-חיים:</b>{" "}
           <LifecycleChip tone="open">פתוח</LifecycleChip> →{" "}
-          <LifecycleChip tone="up">הועלה</LifecycleChip> →{" "}
           <LifecycleChip tone="closed">נסגר</LifecycleChip>. פריט נפתח אוטומטית
           בעת חילוץ ציטוט שאין לו תקדים בקורפוס; בהעלאת פסק-הדין הוא מקושר לרשומת
           הפסיקה דרך{" "}
           <code className="rounded border border-rule bg-surface px-1.5 py-0.5 text-[0.75rem] text-gold-deep" dir="ltr">
             linked_case_law_id
           </code>{" "}
-          ונסגר. פריט שאינו רלוונטי מסומן{" "}
-          <LifecycleChip tone="na">לא-רלוונטי</LifecycleChip> מבלי שתידרש העלאה.
+          ונסגר.
         </div>
       </section>
     </AppShell>