Initial commit: breakpilot-core - Shared Infrastructure

Docker Compose with 24+ services:
- PostgreSQL (PostGIS), Valkey, MinIO, Qdrant
- Vault (PKI/TLS), Nginx (Reverse Proxy)
- Backend Core API, Consent Service, Billing Service
- RAG Service, Embedding Service
- Gitea, Woodpecker CI/CD
- Night Scheduler, Health Aggregator
- Jitsi (Web/XMPP/JVB/Jicofo), Mailpit

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

.env.example

@@ -0,0 +1,58 @@
+# =========================================================
+# BreakPilot Core — Environment Variables
+# =========================================================
+# Copy to .env and adjust values
+
+# Database
+POSTGRES_USER=breakpilot
+POSTGRES_PASSWORD=breakpilot123
+POSTGRES_DB=breakpilot_db
+
+# Security
+JWT_SECRET=your-super-secret-jwt-key-change-in-production
+VAULT_TOKEN=breakpilot-dev-token
+
+# MinIO (S3-compatible storage)
+MINIO_ROOT_USER=breakpilot
+MINIO_ROOT_PASSWORD=breakpilot123
+MINIO_BUCKET=breakpilot-rag
+
+# Environment
+ENVIRONMENT=development
+TZ=Europe/Berlin
+
+# Embedding Service
+EMBEDDING_BACKEND=local
+LOCAL_EMBEDDING_MODEL=sentence-transformers/all-MiniLM-L6-v2
+LOCAL_RERANKER_MODEL=cross-encoder/ms-marco-MiniLM-L-6-v2
+
+# SMTP (Mailpit in dev)
+SMTP_HOST=mailpit
+SMTP_PORT=1025
+
+# Synapse
+SYNAPSE_SERVER_NAME=macmini
+SYNAPSE_DB_PASSWORD=synapse_secret
+
+# Jitsi
+JICOFO_AUTH_PASSWORD=jicofo_secret
+JVB_AUTH_PASSWORD=jvb_secret
+JIBRI_XMPP_PASSWORD=jibri_secret
+JIBRI_RECORDER_PASSWORD=recorder_secret
+JITSI_PUBLIC_URL=https://macmini:8443
+
+# ERPNext
+ERPNEXT_DB_ROOT_PASSWORD=erpnext_root
+ERPNEXT_DB_PASSWORD=erpnext_secret
+ERPNEXT_ADMIN_PASSWORD=admin
+
+# Woodpecker CI
+WOODPECKER_HOST=http://macmini:8090
+WOODPECKER_ADMIN=pilotadmin
+WOODPECKER_AGENT_SECRET=woodpecker-secret
+
+# Gitea Runner
+GITEA_RUNNER_TOKEN=
+
+# Session
+SESSION_TTL_HOURS=24