alex b9f4fd7f4b Per-entity availability, deferred discovery publish, suggested precision ...

- Add HAAvailabilityConfig for per-entity availability_topic and payloads
- Defer discovery until MQTT connected; publish availability after discovery
- HASensor/HANumber: optional suggested_display_precision in discovery
- HASerializer/HADictionary: extend for new keys; update device types and mocks
- Docs and examples reflect availability and precision usage
- Tests updated for discovery and availability behavior
- Ignore .cursor/ in repo root

2026-05-05 17:47:55 +10:00

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number.ino

Per-entity availability, deferred discovery publish, suggested precision

2026-05-05 17:47:55 +10:00