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/components/missing-precedents/missing-precedents-table.tsx

@@ -148,18 +148,43 @@ export function MissingPrecedentsTable({ status, q, legalTopic }: Props) {
                   onClick={() => setOpenId(mp.id)}
                 >
                   <TableCell className="max-w-[440px]">
-                    <div className="text-sm text-navy font-semibold truncate">
-                      {mp.case_name || mp.citation.split(" ").slice(0, 6).join(" ")}
-                    </div>
-                    <div className="text-[0.72rem] text-ink-muted truncate" dir="rtl">
-                      {mp.citation}
-                    </div>
+                    {/* Single line when there's no distinct case_name — the old
+                        two-line layout repeated the citation (name fell back to a
+                        truncation of the same citation). Show the name row only
+                        when it adds information. */}
+                    {mp.case_name && mp.case_name.trim() ? (
+                      <>
+                        <div className="text-sm text-navy font-semibold truncate">
+                          {mp.case_name}
+                        </div>
+                        <div className="text-[0.72rem] text-ink-muted truncate" dir="rtl">
+                          {mp.citation}
+                        </div>
+                      </>
+                    ) : (
+                      <div className="text-sm text-navy font-semibold truncate" dir="rtl">
+                        {mp.citation}
+                      </div>
+                    )}
                   </TableCell>
                   <TableCell>
                     <span className="text-sm text-ink">{mp.legal_topic || "—"}</span>
                   </TableCell>
                   <TableCell>
-                    {mp.cited_in_case_number ? (
+                    {mp.cited_by_decisions?.length ? (
+                      /* committee decision(s) that cite this missing ruling
+                         (corpus citation-graph bridge) */
+                      <span className="inline-flex items-baseline gap-1.5">
+                        <span className="text-sm text-navy font-semibold tabular-nums" dir="ltr">
+                          {mp.cited_by_decisions[0]}
+                        </span>
+                        {mp.cited_by_decisions.length > 1 ? (
+                          <span className="text-[0.7rem] text-ink-muted">
+                            +{mp.cited_by_decisions.length - 1}
+                          </span>
+                        ) : null}
+                      </span>
+                    ) : mp.cited_in_case_number ? (
                       <Link
                         href={`/cases/${encodeURIComponent(mp.cited_in_case_number)}`}
                         onClick={(e) => e.stopPropagation()}
@@ -173,7 +198,25 @@ export function MissingPrecedentsTable({ status, q, legalTopic }: Props) {
                     )}
                   </TableCell>
                   <TableCell className="text-sm text-ink">
-                    {mp.discovery_source === "cited_only" ? (
+                    {mp.cited_by_chairs?.length ? (
+                      /* cited by a committee DECISION in the corpus → show the
+                         chair who relied on it (e.g. דפנה תמיר). Bridge from
+                         precedent_internal_citations; takes priority over the
+                         generic discovery-source chips. */
+                      <>
+                        <Badge
+                          variant="outline"
+                          className="rounded-full whitespace-nowrap bg-success-bg text-success border-transparent"
+                        >
+                          {mp.cited_by_chairs[0]}
+                        </Badge>
+                        {mp.cited_by_chairs.length > 1 ? (
+                          <div className="text-[0.7rem] text-ink-muted mt-1">
+                            +{mp.cited_by_chairs.length - 1} יו״ר
+                          </div>
+                        ) : null}
+                      </>
+                    ) : mp.discovery_source === "cited_only" ? (
                       <>
                         <Badge
                           variant="outline"