feat(service): add FastAPI agent service with 5 routers and Docker setup

- config.py: pydantic-settings with all env vars, privacy mode, per-agent overrides
- app_state.py: global singletons (pool, master agent, registry, llm_router, sweep)
- main.py: FastAPI lifespan startup — DB pool, LLM router, Odoo client, agents, master
- routers/dispatch.py: POST /dispatch with rate limiting and webhook secret auth
- routers/approval.py: GET /approval/pending, POST /approval/respond
- routers/registry.py: GET/POST /registry/agents, POST /registry/backend overrides
- routers/sweep.py: POST /sweep trigger, GET /sweep/status
- routers/health.py: GET /health, GET /health/detailed (DB/Odoo/Ollama checks)
- requirements.txt: pinned deps (fastapi, uvicorn, asyncpg, anthropic, alembic)
- Dockerfile: python:3.11-slim, single uvicorn worker
- docker-compose.yml: agent-service + postgres:15, bound to 192.168.2.47:8001

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

docker-compose.yml

@@ -0,0 +1,59 @@
+version: '3.9'
+
+services:
+  agent-service:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: activeblue-agent
+    restart: unless-stopped
+    env_file: .env
+    ports:
+      - '192.168.2.47:8001:8001'
+    depends_on:
+      agent-db:
+        condition: service_healthy
+    networks:
+      - activeblue-net
+    healthcheck:
+      test: ['CMD', 'curl', '-f', 'http://localhost:8001/health']
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 20s
+    logging:
+      driver: json-file
+      options:
+        max-size: '50m'
+        max-file: '5'
+
+  agent-db:
+    image: postgres:15-alpine
+    container_name: activeblue-agent-db
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-activeblue_ai}
+      POSTGRES_USER: ${POSTGRES_USER:-activeblue}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+    volumes:
+      - agent-db-data:/var/lib/postgresql/data
+    networks:
+      - activeblue-net
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U ${POSTGRES_USER:-activeblue} -d ${POSTGRES_DB:-activeblue_ai}']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    logging:
+      driver: json-file
+      options:
+        max-size: '20m'
+        max-file: '3'
+
+volumes:
+  agent-db-data:
+
+networks:
+  activeblue-net:
+    name: activeblue-net
+    external: false