Hermes df212796d2 docs: add MQTT message format contract with closed-network architecture ...

Defines topic hierarchy, payload schemas, QoS levels, heartbeat
protocol, camera auto-discovery via announce topic, offline
buffering strategy, and command/response flow for start/stop.

Architecture: travel router subnet (192.168.4.x), Pi Zero 2 W
runs Mosquitto + Go backend, ESP32s dual-STA to GoPro AP +
travel router. No internet dependency.

Closes CUB-238.

2026-05-21 21:08:38 +00:00

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plans

docs: add MQTT message format contract with closed-network architecture

2026-05-21 21:08:38 +00:00