- Show real-time status messages and a collapsible log panel during WiFi provisioning
- Thread addProvLog/setProvStatus callbacks through provisionAndSend and sendPayloadOverSerial
- Log every stage: mothership fetch, payload assembly, port open retries, serial send/response
- All log lines also go to browser console.log/warn/error
- Firmware: extend provisioning window from 10s to 120s for fresh boards (15s for re-provisioning)
- Firmware: include MAC address in SPAXEL READY message for display
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>