Add TravelLine pull integration for NetUP: capture endpoint + tl_token

- New /travelline route: accepts all NetUP polls, logs them to in-memory
  ring buffer (GET /travelline/_log to inspect), responds with active
  reservations in a generic PMS format
- Migration 007: adds tl_token column to netup_settings
- PATCH netup/settings now saves tl_token; GET returns it
- TvWelcomePage: new TravelLine section with read-only API URL + copy
  button and token input field

Setup in NetUP: Integration type = TravelLine,
API URL = https://api.hotelsync.ru/travelline, Token = <tl_token>

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

src/lib/api.ts

@@ -269,10 +269,10 @@ export const api = {
   // ── NetUP IPTV ────────────────────────────────────────────────────────────
   netup: {
     getSettings: (slug: string) =>
-      req<{ serverUrl: string; username: string; password: string; defaultLanguage: string; enabled: boolean }>(
+      req<{ serverUrl: string; username: string; password: string; defaultLanguage: string; enabled: boolean; tlToken: string }>(
         'GET', `/api/hotels/${slug}/netup/settings`),
 
-    saveSettings: (slug: string, data: { server_url: string; username: string; password?: string; default_language: string; enabled: boolean }) =>
+    saveSettings: (slug: string, data: { server_url: string; username: string; password?: string; default_language: string; enabled: boolean; tl_token: string }) =>
       req<{ ok: boolean }>('PATCH', `/api/hotels/${slug}/netup/settings`, data),
 
     testConnection: (slug: string) =>