Move ArduinoHA to a structured, runtime-configurable log model and instrument HAMqtt with disconnect and publish failure telemetry so ESP8266 MQTT failures can be diagnosed without patching PubSubClient first.
- 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
PubSubClientMock flags inbound callback context and counts publish attempts
from callbacks. Entity and core tests assert unsafe callback publishes are
rejected by the mock (baseline before HAMqtt deferred publish).
Replace the legacy tests/ tree (AUnit, EpoxyDuino, Make, AUniter) with
PlatformIO Unity suites under test/, shared helpers, and platformio.ini.
Remove AUnitHelpers and drop the AUnit include from ArduinoHA test builds.
Refresh docs to Markdown-only and document the test workflow in CHANGELOG.
Align ArduinoHA with current Home Assistant MQTT discovery expectations by adding default entity IDs, device discovery support, safer runtime discovery refresh behavior, expanded entity category coverage, and the tests/docs needed to support the migration away from legacy object_id payloads.
Store the production PubSubClient instance directly on HAMqtt and release base device serializers on destruction to avoid invalid deletes and leaked serializer allocations.
This prevents overflow-related crashes when select options exceed 255 characters, adds runtime min/max/step updates that republish discovery config, and includes related HAText compilation fixes with test coverage.
This integrates configurable MQTT reconnect behavior, the new Text entity, default lambda callback support across command-capable entities, and entity_category support for button/sensor/number families with test coverage.
alex