feat(batch-agent): extract Batch Agent Service (Step 3)

- agent_runner: local directory + cloud agent orchestration via Redis
- 5 domain agents: filesystem, task, note, project, timeline
- integrations: Gmail, MS Graph (Outlook + Teams)
- journey: guided chatbot conversation to build prompt_template
- routes: REST endpoints (catalog, can-create, trigger)
- redis_consumer: subscribes to batch:request:* pattern
- ws_context: Redis-based execute_on_client for tool round-trip
- Dockerfile with 300s timeout for long-running batch jobs

services/batch-agent/requirements.txt

@@ -0,0 +1,20 @@
+fastapi>=0.115.0
+uvicorn[standard]>=0.34.0
+gunicorn>=22.0.0
+pydantic>=2.10.0
+pydantic-settings>=2.7.0
+sqlalchemy>=2.0.0
+asyncpg>=0.30.0
+redis>=5.0.0
+cryptography>=42.0.0
+python-dotenv>=1.0.0
+langchain-core>=0.3.0
+langchain-openai>=0.3.0
+langchain-litellm>=0.3.0
+litellm>=1.50.0
+openai>=1.50.0
+httpx>=0.27.0
+croniter>=2.0.0
+google-api-python-client>=2.130.0
+google-auth>=2.30.0
+msal>=1.28.0