feat(precedents): formal citation per Israeli citation rules + copy/edit UI

Until now, "case_number" was the only stored identifier for a precedent.
But a *citation per the Israeli unified citation rules* is a different
beast — it has bold parties, an unbold prefix (court abbrev + panel/
district parenthetical + case number), and an unbold trailing reporter
(נבו / פ"ד...).  Without storing it as a first-class field we couldn't
hand the chair a one-click "copy as citation" experience for pasting
into decisions.

Changes:
- Schema V19: case_law.citation_formatted TEXT (Markdown — parties
  wrapped in **…** so the copy helper can render <strong> for Word/Docs
  paste and keep plain-text fallback meaningful).
- Metadata extractor: composes citation_formatted from the document
  text per the unified citation rules, with worked examples for ע"א /
  עת"מ / ערר / בל"מ in the prompt. Refuses to store half-formed strings.
- PATCH /api/precedent-library/{id} accepts citation_formatted so the
  chair can correct LLM mistakes.
- /precedents/[id]: dedicated "מראה מקום" block with bold rendering,
  a copy-to-clipboard button (text/html + text/plain so Word keeps
  the bolds), and an inline edit textarea.
- /precedents list rows: link displays the formatted citation when
  available, with a small inline copy button — falls back to the bare
  case_number for older rows.

Backfill of existing rows happens by re-stamping the extraction queue
once V19 has rolled out and the new field is reachable.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web-ui/src/components/precedents/library-list-panel.tsx

@@ -25,6 +25,10 @@ import {
 import { PRACTICE_AREAS, practiceAreaShort } from "./practice-area";
 import { PrecedentUploadSheet } from "./precedent-upload-sheet";
 import { PrecedentEditSheet } from "./precedent-edit-sheet";
+import {
+  FormattedCitation,
+  CitationCopyButton,
+} from "./formatted-citation";
 
 function formatDate(iso: string | null) {
   if (!iso) return "—";
@@ -152,9 +156,25 @@ function CourtRow({ p, onEdit }: { p: Precedent; onEdit: (id: string) => void })
         className="font-semibold text-navy text-right whitespace-normal break-words min-w-[280px] max-w-[420px] py-3"
         dir="rtl"
       >
-        <Link href={`/precedents/${p.id}`} className="hover:underline hover:text-gold-deep" dir="auto">
-          {cleanCitation(p.case_number)}
-        </Link>
+        <div className="flex items-start justify-between gap-2">
+          <Link
+            href={`/precedents/${p.id}`}
+            className="hover:underline hover:text-gold-deep block min-w-0"
+            dir="auto"
+          >
+            {p.citation_formatted ? (
+              <FormattedCitation
+                citation={p.citation_formatted}
+                className="block leading-snug"
+              />
+            ) : (
+              cleanCitation(p.case_number)
+            )}
+          </Link>
+          {p.citation_formatted ? (
+            <CitationCopyButton citation={p.citation_formatted} size="xs" />
+          ) : null}
+        </div>
       </TableCell>
       {/* Column "שם / ערכאה" hidden by request (case_name often equals case_number prefix). Keep field in DB; restore by un-hiding. */}
       <TableCell className="hidden text-ink whitespace-normal break-words max-w-[260px] py-3">
@@ -237,9 +257,25 @@ function CommitteeRow({ p, onEdit }: { p: Precedent; onEdit: (id: string) => voi
         className="font-semibold text-navy text-right whitespace-normal break-words min-w-[200px] max-w-[320px] py-3"
         dir="rtl"
       >
-        <Link href={`/precedents/${p.id}`} className="hover:underline hover:text-gold-deep" dir="auto">
-          {cleanCitation(p.case_number)}
-        </Link>
+        <div className="flex items-start justify-between gap-2">
+          <Link
+            href={`/precedents/${p.id}`}
+            className="hover:underline hover:text-gold-deep block min-w-0"
+            dir="auto"
+          >
+            {p.citation_formatted ? (
+              <FormattedCitation
+                citation={p.citation_formatted}
+                className="block leading-snug"
+              />
+            ) : (
+              cleanCitation(p.case_number)
+            )}
+          </Link>
+          {p.citation_formatted ? (
+            <CitationCopyButton citation={p.citation_formatted} size="xs" />
+          ) : null}
+        </div>
       </TableCell>
       {/* Column "שם" hidden by request (case_name often equals case_number prefix). Keep field in DB; restore by un-hiding. */}
       <TableCell className="hidden text-ink whitespace-normal break-words max-w-[220px] py-3">