Add Diagnostics tab to TV Welcome: view NetUP poll requests in UI

- Rename pull endpoint /travelline → /netup-pms (cleaner branding)
- Add GET/DELETE /api/hotels/:slug/netup/log endpoints
- TvWelcomePage: new 'Диагностика' tab shows incoming NetUP requests
  with method, URL, timestamp list + detail panel (headers, query, body)
- Remove 'TravelLine' wording from UI, replace with 'Pull-интеграция'

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib/api.ts

@@ -287,6 +287,13 @@ export const api = {
 
     sendMessage: (slug: string, roomId: string, message: string, guestName?: string) =>
       req<{ ok: boolean }>('POST', `/api/hotels/${slug}/netup/message`, { room_id: roomId, message, guest_name: guestName }),
+
+    getLog: (slug: string) =>
+      req<{ count: number; requests: { ts: string; method: string; url: string; headers: Record<string, unknown>; query: Record<string, unknown>; body: unknown }[] }>(
+        'GET', `/api/hotels/${slug}/netup/log`),
+
+    clearLog: (slug: string) =>
+      req<{ ok: boolean }>('DELETE', `/api/hotels/${slug}/netup/log`),
   },
 }