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>

agent_service/config.py

@@ -0,0 +1,92 @@
+from __future__ import annotations
+import os
+from functools import lru_cache
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    # Odoo
+    odoo_url: str = 'http://localhost:8069'
+    odoo_db: str = 'odoo'
+    odoo_api_key: str = ''
+
+    # Ollama
+    ollama_url: str = 'http://localhost:11434'
+    ollama_model: str = 'llama3'
+    ollama_timeout: int = 120
+
+    # Anthropic / Claude
+    anthropic_api_key: str = ''
+    claude_model: str = 'claude-sonnet-4-6'
+
+    # Privacy
+    llm_privacy_mode: str = 'local'  # local | hybrid | cloud
+
+    # Per-agent backend overrides (env: AGENT_BACKEND_FINANCE=claude)
+    agent_backend_finance: str = ''
+    agent_backend_accounting: str = ''
+    agent_backend_crm: str = ''
+    agent_backend_sales: str = ''
+    agent_backend_project: str = ''
+    agent_backend_elearning: str = ''
+    agent_backend_expenses: str = ''
+    agent_backend_employees: str = ''
+
+    # Service
+    agent_service_port: int = 8001
+    webhook_secret: str = ''
+    allowed_callback_ip: str = ''
+
+    # Postgres
+    postgres_host: str = 'localhost'
+    postgres_port: int = 5432
+    postgres_db: str = 'activeblue_ai'
+    postgres_user: str = 'activeblue'
+    postgres_password: str = ''
+    postgres_min_connections: int = 2
+    postgres_max_connections: int = 10
+
+    # Rate limiting
+    dispatch_rate_limit_per_user: int = 30  # requests per minute
+    directive_timeout_minutes: int = 10
+
+    # Logging
+    log_level: str = 'INFO'
+    log_format: str = 'json'
+    loki_url: str = ''
+
+    class Config:
+        env_file = '.env'
+        env_file_encoding = 'utf-8'
+
+    @property
+    def postgres_dsn(self) -> str:
+        return (
+            f'postgresql+asyncpg://{self.postgres_user}:{self.postgres_password}'
+            f'@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}'
+        )
+
+    @property
+    def postgres_asyncpg_dsn(self) -> str:
+        return (
+            f'asyncpg://{self.postgres_user}:{self.postgres_password}'
+            f'@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}'
+        )
+
+    def agent_backend_override(self, agent_name: str) -> str:
+        mapping = {
+            'finance_agent': self.agent_backend_finance,
+            'accounting_agent': self.agent_backend_accounting,
+            'crm_agent': self.agent_backend_crm,
+            'sales_agent': self.agent_backend_sales,
+            'project_agent': self.agent_backend_project,
+            'elearning_agent': self.agent_backend_elearning,
+            'expenses_agent': self.agent_backend_expenses,
+            'employees_agent': self.agent_backend_employees,
+        }
+        return mapping.get(agent_name, '')
+
+
+@lru_cache(maxsize=1)
+def get_settings() -> Settings:
+    return Settings()