- DB schema: relaxed origin CHECK to >=2 chars, added scan_mode column to
scans and scheduled_scans, added origin_airport to routes and flights,
updated unique index to (scan_id, COALESCE(origin_airport,''), destination)
- Migrations: init_db.py recreates tables and adds columns via guarded ALTERs
- API: scan_mode field on ScanRequest/Scan; Route/Flight expose origin_airport;
GET /scans/{id}/flights accepts origin_airport filter; CreateScheduleRequest
and Schedule carry scan_mode; scheduler and run-now pass scan_mode through
- scan_processor: _write_route_incremental accepts origin_airport; process_scan
branches on scan_mode=reverse (country → airports × destinations × dates)
- Frontend: new CountrySelect component (populated from GET /api/v1/countries);
Scans page adds Direction toggle + CountrySelect for both modes; ScanDetails
shows Origin column for reverse scans and uses composite route keys; Re-run
preserves scan_mode
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
