Initial commit: Multi-service AI agent system

- Frontend: Vite + React + TypeScript chat interface
- Backend: FastAPI gateway with LangGraph routing
- Knowledge Service: ChromaDB RAG with Gitea scraper
- LangGraph Service: Multi-agent orchestration
- Airflow: Scheduled Gitea ingestion DAG
- Documentation: Complete plan and implementation guides

Architecture:
- Modular Docker Compose per service
- External ai-mesh network for communication
- Fast rebuilds with /app/packages pattern
- Intelligent agent routing (no hardcoded keywords)

Services:
- Frontend (5173): React chat UI
- Chat Gateway (8000): FastAPI entry point
- LangGraph (8090): Agent orchestration
- Knowledge (8080): ChromaDB RAG
- Airflow (8081): Scheduled ingestion
- PostgreSQL (5432): Chat history

Excludes: node_modules, .venv, chroma_db, logs, .env files
Includes: All source code, configs, docs, docker files

knowledge_service/data/hobbies.md

@@ -0,0 +1,15 @@
+# Sam's Hobbies
+
+## Music
+- Enjoys playing guitar and synthesizers.
+- Collects vintage vinyl.
+
+## Gardening
+- Maintains a local vegetable patch.
+- Focuses on organic heirloom tomatoes.
+
+## Skiing
+- Advanced skier, prefers off-piste and backcountry in the Alps.
+
+## Art
+- Digital illustration and oil painting.