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>

test/module-types.test.js

@@ -0,0 +1,49 @@
+'use strict';
+const { getProtocol, isSensorOnly, isGateway } = require('../src/module-types');
+
+describe('getProtocol', () => {
+  test('pool controller → linesControl', () => {
+    expect(getProtocol('lr-pc')).toBe('linesControl');
+    expect(getProtocol('lr-niv')).toBe('linesControl');
+  });
+
+  test('irrigation → manualCommand', () => {
+    expect(getProtocol('lr-ag')).toBe('manualCommand');
+    expect(getProtocol('lr-ip-eco')).toBe('manualCommand');
+  });
+
+  test('unknown type → linesControl with console warning', () => {
+    const warn = jest.spyOn(console, 'warn').mockImplementation(() => {});
+    expect(getProtocol('lr-unknown-xyz')).toBe('linesControl');
+    expect(warn).toHaveBeenCalled();
+    warn.mockRestore();
+  });
+});
+
+describe('isSensorOnly', () => {
+  test('sensor modules return true', () => {
+    expect(isSensorOnly('lr-ms')).toBe(true);
+    expect(isSensorOnly('lr-pr')).toBe(true);
+    expect(isSensorOnly('pool-level-sensor')).toBe(true);
+    expect(isSensorOnly('lr-mas')).toBe(true);
+  });
+
+  test('actuator modules return false', () => {
+    expect(isSensorOnly('lr-pc')).toBe(false);
+    expect(isSensorOnly('lr-ag')).toBe(false);
+    expect(isSensorOnly('lr-niv')).toBe(false);
+  });
+});
+
+describe('isGateway', () => {
+  test('gateway types return true', () => {
+    expect(isGateway('lr-mb-10')).toBe(true);
+    expect(isGateway('lr-mb-30')).toBe(true);
+    expect(isGateway('wf-mb')).toBe(true);
+  });
+
+  test('non-gateway types return false', () => {
+    expect(isGateway('lr-pc')).toBe(false);
+    expect(isGateway('lr-ms')).toBe(false);
+  });
+});