Integrate this application with the Travel Search Engine (TSE) API.

Read these first, in this order:
1. https://developers.travnet.app/llms-full.txt
   The conventions and every endpoint, with parameters and descriptions.
2. https://developers.travnet.app/openapi.json
   The source of truth for every request and response shape.
3. If you support MCP, connect to https://mcp.travnet.app and call api_conventions first.
   Claude Code: claude mcp add --transport http tse https://mcp.travnet.app

Hosts:
- Test: https://test.travnet.app   (use this until I say otherwise)
- Production: https://api.travnet.app

Build, in this order, and test each step against the test host before the next:
1. Sign in: POST /api/v1/auth/login with email and password. Send access_token as
   "Authorization: Bearer <token>" on every call. Renew it with POST /api/v1/auth/refresh
   before it expires.
2. Flight search: POST /api/v1/flight/getFare returns a search_id. Read the results from
   GET /api/v1/flight/getFare/batch/{search_id}, or stream them from
   GET /api/v1/flight/getFare/stream/{search_id} (Server-Sent Events).
3. Booking: POST /api/v1/bookings/revalidation to confirm the price, then
   POST /api/v1/bookings/createPnr.
4. Payment and ticketing: POST /api/v1/bookings/{id}/authorize, then
   POST /api/v1/bookings/{id}/payment/capture, then POST /api/v1/bookings/{id}/ticket.
5. Manage: GET /api/v1/bookings/{id}. Offer only the actions its supplier_actions marks true.
6. Hotels and transport, if this application needs them: the same search, book and manage
   pattern under /api/v1/hotel and /api/v1/transport.

Rules:
- Money is an integer in minor units on fields ending _minor: 45000 means 450.00.
- Every call that creates or moves money sends an Idempotency-Key header. A retry sends the
  same key, never a new one.
- A 503 with an X-Supplier-Status header means the supplier failed (502) or timed out (504);
  the reason is in detail. Detail code BOOKING_PENDING_CONFIRMATION means the booking may
  exist: do not book again, read the booking until it settles.
- A 501 means this booking's supplier does not offer that action.
- 429 means rate limited: wait and retry.
- Never put tokens, offers or passenger details in a URL. Never hard code credentials.
- Show the user the API's own error reason rather than a generic failure.