feat: initial myprimal MQTT bridge service

Dynamic MySolem/MyIndygo IoT bridge with MQTT, Home Assistant
autodiscovery, and Homebridge EasyMQTT compatibility.

- Device discovery via MySolem API on startup (all modules/inputs/outputs)
- Configurable poll engine (fast/normal/slow buckets, per-input overrides)
- MQTT retained state publishing + HA autodiscovery payloads
- Unified manual command routing (linesControl vs sendManualModuleCommand)
- Runtime config via MQTT $config/set, persisted to config.json
- Expression override system (API-provided > hardcoded > passthrough)
- Minimal REST API: /health, /state, /control, /rediscover
- Docker deployment (Dockerfile + docker-compose.yml)
- 38 unit tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api-docs/lrms.md

@@ -0,0 +1,73 @@
+# LRMS — Sensor Station (LRMS-0721DC)
+
+**Module ID**: `60ca42adad69dac1558f7c64`  
+**Serial**: `7400040721DC0001`  
+**Type**: `lr-ms`  
+**Role**: Pure sensor station — no outputs, no programs
+
+---
+
+## Inputs
+
+| Input ID | Name | Type | Unit | Interval | Notes |
+|---|---|---|---|---|---|
+| `60ca42adad69dac1558f7c66` | Plumbago | 12 (soil moisture) | % | 60 min | Named sensor |
+| `60ca42adad69dac1558f7c67` | Pelouse | 12 (soil moisture) | % | 60 min | Named sensor |
+| `60ca42adad69dac1558f7c69` | *(unnamed)* | 5 (temperature) | °C | 15 min | Air/soil temp |
+
+### Latest readings (2026-06-04)
+
+**Plumbago** (moisture)
+```
+19:42  71.19%
+18:42  74.06%
+17:42  71.63%   ← irrigation spike visible
+16:42  44.64%
+15:42  41.83%
+```
+
+**Pelouse** (moisture)
+```
+19:42  78.25%
+18:42  79.63%
+17:42  70.81%   ← irrigation spike visible
+16:42  58.50%
+14:42  56.19%
+```
+
+**Temperature (unnamed)**
+```
+19:42  16.10°C
+19:27  16.44°C
+18:42  16.66°C
+18:12  16.54°C
+17:42  16.31°C
+```
+
+---
+
+## Remote state
+
+```
+GET /remote/module/state?moduleId=60ca42adad69dac1558f7c64
+```
+
+- Battery: 78% (batteryVoltage field)
+- Last radio contact: 2026-06-04T19:51:50Z
+- Relay: `60ca4276ad69dac1558f7c61` (LRMB10)
+- `relayIsLongPolling: true`
+
+---
+
+## Sensor data endpoint
+
+```
+GET /remote/input/getComputedSensorData
+  ?inputId={inputId}
+  &startDate={iso8601}
+  &endDate={iso8601}
+  &ensurePrevTickForContinuity=true
+```
+
+The moisture sensor uses a computed expression to convert raw ADC values to %.  
+Moisture spikes (>10% jump) correspond to irrigation events — useful to infer watering history even without direct output events.