De-emphasize the observer-eastmesh-bridge-mqtt feature in public-facing
docs (the community prefers not to surface another MQTT-backed mesh):
- eastmesh-docs: drop the track from index/releases/boards track lists,
the custom-cli "MQTT Bridge Settings" section, and the web-panel peer
broker fields; keep only a vague mention in local-builds.md.
- release-notes.yml: remove the track from the list and drop the
2026.7.0 observer-eastmesh-bridge-mqtt entry.
- README: remove the "bidirectional MQTT mesh bridge" bullet and add the
missing repeater-bridge-espnow track to "What This Repo Adds".
The feature, build envs, and CI are unchanged; this is visibility only.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
