♻️ refactor: migrate 19 Matrix bots to shared HealthController

- All bots now use HealthController from @manacore/matrix-bot-common
- Deleted 19 duplicate health.controller.ts files
- Added IConfigService interface for @nestjs/config v3/v4 compatibility
- matrix-stats-bot migrated to use BaseMatrixService as example
- All 19 bots pass type-check

This consolidation eliminates ~400 lines of duplicate health check code.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/matrix-clock-bot/src/app.module.ts

@@ -1,7 +1,7 @@
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
+import { HealthController, createHealthProvider } from '@manacore/matrix-bot-common';
 import { BotModule } from './bot/bot.module';
-import { HealthController } from './health.controller';
 import configuration from './config/configuration';
 
 @Module({
@@ -13,5 +13,6 @@ import configuration from './config/configuration';
 		BotModule,
 	],
 	controllers: [HealthController],
+	providers: [createHealthProvider('matrix-clock-bot')],
 })
 export class AppModule {}

services/matrix-clock-bot/src/health.controller.ts

@@ -1,9 +0,0 @@
-import { Controller, Get } from '@nestjs/common';
-
-@Controller('health')
-export class HealthController {
-	@Get()
-	check() {
-		return { status: 'ok', service: 'matrix-clock-bot' };
-	}
-}