Replace /nav-i/api-keys stub with functional admin page for managing
third-party API keys (Gemini, TomTom, Google Places).
- New lib/api_keys_admin.py: list/update/test operations with masked
display, atomic .env writes (.env.bak backup), provider-specific
test calls (Gemini models.list, TomTom geocode, Google Places
searchText)
- 4 new endpoints: GET /api/nav-i/api-keys/list, POST .../update,
POST .../test, POST .../restart-recon
- Full UI: key table with masked values, per-key update modal with
show/hide toggle, inline test results with latency, Gemini detail
sub-table with per-key stats, RECON restart with confirmation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
