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/lrmb10.md

@@ -0,0 +1,32 @@
+# LRMB10 — LoRa Gateway (LRMB10-070532)
+
+**Module ID**: `60ca4276ad69dac1558f7c61`  
+**Serial**: `1000000705320001`  
+**Type**: `lr-mb-10`  
+**Role**: LoRa relay — all other modules communicate through this gateway
+
+---
+
+## Hardware info (from `remote/module/configuration`)
+
+| Field | Value |
+|---|---|
+| Firmware | 6.5.0 |
+| Hardware | 68.0.0 |
+| BLE | 1.0.13 |
+| WiFi MAC | `10:52:1C:01:2D:F4` |
+| BT MAC | `C8:B9:61:07:05:32` |
+| Ethernet MAC | `FF:FF:FF:FF:FF:FF` (not used) |
+| WiFi SSID | `Freebox-2A5E5D` |
+| Links | WiFi ✓, Bluetooth ✓, Ethernet ✗, Modem ✗ |
+| Server | `qualif.mysolem.com` / `10.iot` |
+| Uptime | 775361 s (~9 days) |
+| Last reboot count | 11 |
+
+---
+
+## Notes
+
+- No programs or outputs — pure relay/gateway
+- All LoRa child modules (`LRMS`, `LRAG`, `LRPS`, `LRPC`) reference this via their `relay` field
+- Remote config endpoint works directly: `GET /remote/module/configuration?moduleId=60ca4276ad69dac1558f7c61`