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/exports.ts

@@ -0,0 +1,87 @@
+/**
+ * Exports domain hooks — draft DOCX files for a case.
+ */
+
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { apiRequest } from "./client";
+import { casesKeys } from "./cases";
+
+export type ExportFile = {
+  filename: string;
+  size: number;
+  created_at: number;
+  is_final: boolean;
+};
+
+export const exportsKeys = {
+  all: ["exports"] as const,
+  list: (caseNumber: string) =>
+    [...exportsKeys.all, "list", caseNumber] as const,
+};
+
+export function useExports(caseNumber: string | undefined) {
+  return useQuery({
+    queryKey: exportsKeys.list(caseNumber ?? ""),
+    queryFn: ({ signal }) =>
+      apiRequest<ExportFile[]>(`/api/cases/${caseNumber}/exports`, { signal }),
+    enabled: Boolean(caseNumber),
+    staleTime: 5_000,
+    refetchInterval: 5_000,
+  });
+}
+
+export function useExportDocx(caseNumber: string) {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: () =>
+      apiRequest<{ status: string; path: string; message: string }>(
+        `/api/cases/${caseNumber}/export-docx`,
+        { method: "POST" },
+      ),
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: exportsKeys.list(caseNumber) });
+      qc.invalidateQueries({ queryKey: casesKeys.detail(caseNumber) });
+    },
+  });
+}
+
+export function useUploadDraft(caseNumber: string) {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (file: File) => {
+      const form = new FormData();
+      form.append("file", file);
+      const res = await fetch(`/api/cases/${caseNumber}/exports/upload`, {
+        method: "POST",
+        body: form,
+      });
+      if (!res.ok) {
+        const err = await res.json().catch(() => ({ detail: "שגיאה בהעלאה" }));
+        throw new Error(err.detail ?? "שגיאה בהעלאה");
+      }
+      return res.json() as Promise<{
+        filename: string;
+        size: number;
+        version: number;
+      }>;
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: exportsKeys.list(caseNumber) });
+    },
+  });
+}
+
+export function useMarkFinal(caseNumber: string) {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (filename: string) =>
+      apiRequest<{ final_filename: string; status: string }>(
+        `/api/cases/${caseNumber}/exports/${filename}/mark-final`,
+        { method: "POST" },
+      ),
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: exportsKeys.list(caseNumber) });
+      qc.invalidateQueries({ queryKey: casesKeys.detail(caseNumber) });
+    },
+  });
+}