MQTT plugin never resets first_time → apps in mqtt namespace not restarted after broker reconnect (regression in 4.5.x)

[herrmannj]

What happened?

When the MQTT broker connection drops, AppDaemon stops apps in the mqtt namespace (PLUGIN_FAILED) but never restarts them after reconnect — they stay stopped until a manual reload. HASS recovers, MQTT does not.

Root cause: PLUGIN_RESTART is only triggered when self.first_time is False (plugin_management.py).
PluginBase.first_time defaults to True. hass/hassplugin.py sets self.first_time = False in post_auth; mqtt/mqttplugin.py never sets it (only an unrelated local first_time_service) → stays True → restart never fires.

Regression: 4.4.2 had a local first_time toggle in the MQTT get_updates, lost in the 4.5 refactor. Affects 4.5.0–4.5.11+ dev.

Docs contradiction: APPGUIDE says reconnect restarts all apps + calls initialize().

Fix: set self.first_time = False after first successful MQTT connect, mirroring hassplugin.py.

Repro: app in namespace: mqtt; restart broker; app is stopped and never restarted.

Version

4.5.x

Installation type

Home Assistant add-on

Relevant log output

Relevant code in the app or config file that caused the issue

Anything else?

No response