Task #649: complete Public Relations & Protocol module (fix 8 review gaps)

Addresses the 8 spec gaps that blocked prior completion, all additive and
scoped to the protocol_* module / /protocol routes. executive-meetings untouched.

Backend (api-server/routes/protocol.ts, lib/db schema, seed):
- External meetings create as "pending" (status dropped from create schema);
  added approve + reject endpoints with state-conditional WHERE status='pending'
  and 409 on contention; patch status enum restricted to completed/cancelled.
- Added approvedBy/approvedAt/rejectionReason columns + status index; default
  status now "pending".
- Booking reject and gift-issue reject made state-conditional (409 on 0 rows).
- Dashboard: roomsAvailableNow (NOT EXISTS), giftsIssuedThisMonth/Qty;
  upcomingExternal filtered to future pending|approved.
- Reports: added externalMeetings summary counts by status.
- Seed: room names corrected (AR + EN).

Frontend (tx-os/pages/protocol.tsx, App.tsx, locales):
- URL-synced tabs under /protocol/:tab (slug<->tab maps).
- Dedicated Rooms tab (moved out of Gifts); RoomDialog isActive toggle.
- External approve/reject buttons + rejectionReason display; ExternalDialog
  create omits status, edit limited to completed/cancelled.
- Dashboard cards clickable to navigate; reports external section.
- Bookings list/calendar (grouped-by-day) view toggle.
- New i18n keys in ar.json + en.json.

Verification: tx-os + protocol.ts typecheck clean; drizzle push + re-seed done;
both workflows restarted; /api/protocol/me returns 401 unauth; architect
re-review approved. Pre-existing typecheck errors in executive-meetings.ts and
push.ts are unrelated and were not touched.

Note: had to rebuild lib/db declarations (tsc --build --force) so api-server
project references picked up the new schema columns.

scripts/src/seed.ts

@@ -878,9 +878,21 @@ async function main() {
     .limit(1);
   if (existingRooms.length === 0) {
     await db.insert(protocolRoomsTable).values([
-      { nameAr: "القاعة الأولى", nameEn: "Room 1", sortOrder: 1 },
-      { nameAr: "القاعة الثانية", nameEn: "Room 2", sortOrder: 2 },
-      { nameAr: "القاعة الثالثة", nameEn: "Room 3", sortOrder: 3 },
+      {
+        nameAr: "قاعة الاجتماعات الرئيسية",
+        nameEn: "Main Meeting Hall",
+        sortOrder: 1,
+      },
+      {
+        nameAr: "قاعة كبار الزوار",
+        nameEn: "VIP Guests Hall",
+        sortOrder: 2,
+      },
+      {
+        nameAr: "قاعة الاجتماعات التنفيذية",
+        nameEn: "Executive Meetings Hall",
+        sortOrder: 3,
+      },
     ]);
     console.log("Protocol default rooms created");
   }