refactor: Jitsi/Matrix/Voice von Core übernommen, Camunda/BPMN gelöscht, Kommunikation-Nav

- Voice-Service von Core nach Lehrer verschoben (bp-lehrer-voice-service)
- 4 Jitsi-Services + 2 Synapse-Services in docker-compose.yml aufgenommen
- Camunda komplett gelöscht: workflow pages, workflow-config.ts, bpmn-js deps
- CAMUNDA_URL aus backend-lehrer environment entfernt
- Sidebar: Kategorie "Compliance SDK" + "Katalogverwaltung" entfernt
- Sidebar: Neue Kategorie "Kommunikation" mit Video & Chat, Voice Service, Alerts

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

voice-service/.env.example

@@ -0,0 +1,59 @@
+# Voice Service Environment Variables
+# Copy this file to .env and adjust values
+
+# Service Configuration
+PORT=8091
+ENVIRONMENT=development
+DEBUG=false
+
+# JWT Authentication (REQUIRED - load from HashiCorp Vault)
+# vault kv get -field=secret secret/breakpilot/auth/jwt
+JWT_SECRET=
+JWT_ALGORITHM=HS256
+JWT_EXPIRATION_HOURS=24
+
+# PostgreSQL (REQUIRED - load from HashiCorp Vault)
+# vault kv get -field=url secret/breakpilot/database/postgres
+DATABASE_URL=
+
+# Valkey (Redis-fork) Session Cache
+VALKEY_URL=redis://valkey:6379/2
+SESSION_TTL_HOURS=24
+TASK_TTL_HOURS=168
+
+# PersonaPlex Configuration (Production GPU)
+PERSONAPLEX_ENABLED=false
+PERSONAPLEX_WS_URL=ws://host.docker.internal:8998
+PERSONAPLEX_MODEL=personaplex-7b
+PERSONAPLEX_TIMEOUT=30
+
+# Task Orchestrator
+ORCHESTRATOR_ENABLED=true
+ORCHESTRATOR_MAX_CONCURRENT_TASKS=10
+
+# Fallback LLM (Ollama for Development)
+FALLBACK_LLM_PROVIDER=ollama
+OLLAMA_BASE_URL=http://host.docker.internal:11434
+OLLAMA_VOICE_MODEL=qwen2.5:32b
+OLLAMA_TIMEOUT=120
+
+# Klausur Service Integration
+KLAUSUR_SERVICE_URL=http://klausur-service:8086
+
+# Audio Configuration
+AUDIO_SAMPLE_RATE=24000
+AUDIO_FRAME_SIZE_MS=80
+AUDIO_PERSISTENCE=false
+
+# Encryption Configuration
+ENCRYPTION_ENABLED=true
+NAMESPACE_KEY_ALGORITHM=AES-256-GCM
+
+# TTL Configuration (DSGVO Data Minimization)
+TRANSCRIPT_TTL_DAYS=7
+TASK_STATE_TTL_DAYS=30
+AUDIT_LOG_TTL_DAYS=90
+
+# Rate Limiting
+MAX_SESSIONS_PER_USER=5
+MAX_REQUESTS_PER_MINUTE=60