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ha_discovery: publish state/availability under home_automation prefix

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Follow the standard MQTT Discovery split: discovery config stays under the HA
discovery prefix (homeassistant/.../config, required), but the actual state and
availability are published under our own prefix (default home_automation/). The
config payload's state_topic/availability fields point at the new prefix so HA
reads state from there.

- new config ha_state_topic_prefix (default home_automation).
- build_discovery_payload + all publish_* split discovery_prefix (config topic)
  from state_prefix (state/availability). energy-cost still omits availability;
  modbus availability structure unchanged. Tests updated.
This commit is contained in:
tliu93
2026-06-24 16:21:15 +02:00
parent 9bc46f8d2d
commit d7f0731d1c
6 changed files with 253 additions and 34 deletions
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.env.example
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@@ -43,8 +43,11 @@ MQTT_TLS_ENABLED=false
# Optional: Home Assistant MQTT Discovery.
# Requires MQTT_ENABLED=true and a running MQTT broker.
# HA_DISCOVERY_PREFIX is the config topic prefix (must be "homeassistant" for HA auto-discovery).
# HA_STATE_TOPIC_PREFIX is the prefix for state/availability topics (separate from discovery).
HA_DISCOVERY_ENABLED=false
HA_DISCOVERY_PREFIX=homeassistant
HA_STATE_TOPIC_PREFIX=home_automation
# Optional: DSMR smart-meter ingest via MQTT (M6; default off — opt-in).
# Set DSMR_INGEST_ENABLED=true to subscribe to the DSMR MQTT topic and