✨ feat: add voice transcription support to Matrix bots

Add TranscriptionModule and handleAudioMessage to enable voice message
transcription across all Matrix bots. Users can now send voice messages
which are automatically transcribed and processed as text commands.

Affected bots:
- matrix-calendar-bot
- matrix-chat-bot
- matrix-contacts-bot
- matrix-manadeck-bot
- matrix-ollama-bot
- matrix-picture-bot
- matrix-planta-bot
- matrix-presi-bot
- matrix-questions-bot
- matrix-skilltree-bot
- matrix-stats-bot
- matrix-storage-bot
- matrix-tts-bot

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

services/matrix-skilltree-bot/src/bot/bot.module.ts

@@ -1,10 +1,16 @@
 import { Module } from '@nestjs/common';
 import { MatrixService } from './matrix.service';
 import { SkilltreeModule } from '../skilltree/skilltree.module';
-import { SessionModule } from '@manacore/bot-services';
+import { SessionModule, TranscriptionModule } from '@manacore/bot-services';
 
 @Module({
-	imports: [SkilltreeModule, SessionModule.forRoot()],
+	imports: [
+		SkilltreeModule,
+		SessionModule.forRoot(),
+		TranscriptionModule.register({
+			sttUrl: process.env.STT_URL || 'http://localhost:3020',
+		}),
+	],
 	providers: [MatrixService],
 	exports: [MatrixService],
 })