After WiFi is configured and device reboots, NetworkManager needs
a few seconds to auto-connect to saved WiFi. Without waiting,
AP starts immediately and occupies wlan0, preventing NM reconnect.
- Add hasSavedWifiConnection() to check for saved WiFi profiles
- Wait up to 20s for NM auto-connect before falling back to AP
- First boot (no saved WiFi) still starts AP immediately
Made-with: Cursor
Redesign provisioning from one-shot blocking to persistent background manager:
- AP hotspot starts at boot regardless of eth0 status
- Captive portal runs alongside AP for WiFi configuration
- AP automatically shuts down only when WiFi STA connects
- WiFi drops at runtime -> AP auto-restarts
- WiFi connect fails -> AP auto-restarts for retry
- client.js no longer blocks on network; connects WS when ready
Made-with: Cursor
