feat(precedents): metadata auto-fill, edit sheet, persuasive extraction

Three improvements to the precedent library based on usage feedback:

1. Auto-fill metadata at upload time. New service
   precedent_metadata_extractor reads the ruling's full_text and
   suggests case_name (short), summary, headnote, key_quote,
   subject_tags, appeal_subtype. The merge policy fills only empty
   fields, preserving everything the chair typed in the upload form.
   Wired into the ingest pipeline; also exposed as a re-run endpoint
   POST /api/precedent-library/{id}/extract-metadata for existing
   records.

2. Edit sheet in the UI. Pencil icon on each library row opens a
   pre-populated form covering every field. A Sparkles button on the
   sheet runs the metadata extractor on demand and refreshes the
   form. The case_number is read-only because halachot are FK'd to
   it; renaming requires delete + re-upload.

3. Halacha extractor branches on is_binding. Sources marked binding
   (Supreme/Administrative) keep the strict halacha prompt. Non-binding
   sources (other appeals committees, district courts on planning
   matters) get a different prompt that extracts applications,
   interpretive principles, and persuasive conclusions — labeled with
   new rule_types 'application' and 'persuasive'. The fallback also
   widens chunk selection: if the chunker labeled nothing as
   legal_analysis/ruling/conclusion, we now run on all chunks rather
   than returning zero halachot for a usable ruling.

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

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

@@ -1,7 +1,7 @@
 "use client";
 
 import { useState } from "react";
-import { Trash2, Plus, RefreshCw } from "lucide-react";
+import { Trash2, Plus, RefreshCw, Pencil } from "lucide-react";
 import { toast } from "sonner";
 import {
   Table, TableBody, TableCell, TableHead, TableHeader, TableRow,
@@ -22,6 +22,7 @@ import {
 } from "@/lib/api/precedent-library";
 import { PRACTICE_AREAS, PRECEDENT_LEVELS, practiceAreaShort } from "./practice-area";
 import { PrecedentUploadSheet } from "./precedent-upload-sheet";
+import { PrecedentEditSheet } from "./precedent-edit-sheet";
 
 function formatDate(iso: string | null) {
   if (!iso) return "—";
@@ -55,7 +56,12 @@ function StatusPill({ p }: { p: Precedent }) {
   );
 }
 
-function PrecedentRow({ p }: { p: Precedent }) {
+function PrecedentRow({
+  p, onEdit,
+}: {
+  p: Precedent;
+  onEdit: (id: string) => void;
+}) {
   const del = useDeletePrecedent();
   const reExtract = useReExtractHalachot();
 
@@ -105,6 +111,14 @@ function PrecedentRow({ p }: { p: Precedent }) {
       </TableCell>
       <TableCell className="text-end">
         <div className="flex items-center gap-1 justify-end">
+          <Button
+            variant="ghost" size="sm" onClick={() => onEdit(p.id)}
+            aria-label={`ערוך את ${p.case_number}`}
+            title="ערוך פרטים"
+            className="text-ink-muted hover:text-navy"
+          >
+            <Pencil className="w-4 h-4" />
+          </Button>
           <Button
             variant="ghost" size="sm" onClick={onReExtract}
             disabled={reExtract.isPending}
@@ -133,6 +147,7 @@ export function LibraryListPanel() {
   const [precedentLevel, setPrecedentLevel] = useState("");
   const [search, setSearch] = useState("");
   const [uploadOpen, setUploadOpen] = useState(false);
+  const [editingId, setEditingId] = useState<string | null>(null);
 
   const { data, isPending, error } = usePrecedents({
     practiceArea: practiceArea || undefined,
@@ -222,7 +237,9 @@ export function LibraryListPanel() {
                   </TableCell>
                 </TableRow>
               ) : (
-                data.items.map((p) => <PrecedentRow key={p.id} p={p} />)
+                data.items.map((p) => (
+                  <PrecedentRow key={p.id} p={p} onEdit={setEditingId} />
+                ))
               )}
             </TableBody>
           </Table>
@@ -230,6 +247,10 @@ export function LibraryListPanel() {
       )}
 
       <PrecedentUploadSheet open={uploadOpen} onOpenChange={setUploadOpen} />
+      <PrecedentEditSheet
+        caseLawId={editingId}
+        onOpenChange={(open) => { if (!open) setEditingId(null); }}
+      />
     </div>
   );
 }