- Store last status message on MeshcoreClient so error details survive
beyond the SSE event (which isn't active during connecting state)
- Status endpoint now returns message field so the frontend can show
the real reason (e.g. 'Connection failed after retries: ...')
- Extend JS polling from 30s to 90s to outlast the backend's 65s
retry sequence (5+15+45s delays) before declaring timeout
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Revert route to scan_ble() — scan_ble_sync() lives on AsyncWorker,
not MeshcoreClient; the 500 was caused by our previous fix
- MeshcoreClient.scan_ble() now runs a one-shot asyncio scan when no
worker is active, so Scan works before Connect is pressed
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>