Two FATAL while(true) hangs in main.cpp (config load fail, camera init
fail) previously relied on the hardware watchdog to reboot the device,
leaving the cause invisible beyond a generic TWDT reset reason. Now
each path logs EVT_REBOOT with REBOOT_FATAL_CONFIG or REBOOT_FATAL_CAMERA
before hanging, so the next heartbeat's recent_events surfaces which
branch hung. Server-side decoder updated for the two new enum values.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Peter Woolery
d943b3df5a