Initial import with GitLab CI/CD and registry deploy flow

docs/architecture/overview.md

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+# Architecture Overview
+
+## Services
+- api-gateway
+- auth-service
+- audit-service
+- customer-service
+- interaction-service
+- routing-service
+- voice-adapter-service
+- telegram-adapter-service
+- kb-service
+- reporting-service
+- supervisor-service
+
+## Data and event strategy
+- All services use SQL storage via `DATABASE_URL`
+- Default local mode: SQLite (`.data/mvp_cc.db`)
+- Target mode: PostgreSQL (supported in `deployment/docker-compose.yml`)
+- Contract-first API and JSON event schema artifacts
+- Event contracts are fixed and ready for message bus integration (RabbitMQ/Kafka) in next phase
+
+## Deployment
+- Local: Docker Compose
+- On-prem: Kubernetes manifests and Helm chart