Add drafts & feedback tab to case page, remove global feedback page

Move draft management (export DOCX, download, upload revised version, mark
final) and chair feedback into a new "טיוטות והערות" tab on the case detail
page. Remove the standalone /feedback page and its nav link since feedback
is now case-scoped.

Also fix /api/admin/skills 500 error when Paperclip DB is unreachable by
adding a connection timeout and graceful fallback to disk-only skills.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web-ui/src/lib/api/feedback.ts

@@ -56,6 +56,19 @@ export function useFeedbackList(filters: {
   });
 }
 
+/** Feedback filtered by case number */
+export function useCaseFeedback(caseNumber: string | undefined) {
+  const params = caseNumber ? `?case_number=${caseNumber}` : "";
+  return useQuery({
+    queryKey: [...feedbackKeys.all, "case", caseNumber ?? ""] as const,
+    queryFn: ({ signal }) =>
+      apiRequest<ChairFeedback[]>(`/api/feedback${params}`, { signal }),
+    enabled: Boolean(caseNumber),
+    staleTime: 5_000,
+    refetchInterval: 5_000,
+  });
+}
+
 export function useCreateFeedback() {
   const qc = useQueryClient();
   return useMutation({
@@ -100,6 +113,16 @@ export const CATEGORY_LABELS: Record<FeedbackCategory, string> = {
   other: "אחר",
 };
 
+/** Tailwind color classes per category */
+export const CATEGORY_COLORS: Record<FeedbackCategory, string> = {
+  missing_content: "bg-amber-100 text-amber-800 border-amber-200",
+  wrong_tone: "bg-purple-100 text-purple-800 border-purple-200",
+  wrong_structure: "bg-blue-100 text-blue-800 border-blue-200",
+  factual_error: "bg-red-100 text-red-800 border-red-200",
+  style: "bg-emerald-100 text-emerald-800 border-emerald-200",
+  other: "bg-gray-100 text-gray-800 border-gray-200",
+};
+
 /** Block ID labels */
 export const BLOCK_LABELS: Record<string, string> = {
   "block-he": "ה — פתיחה",