fix: make Odoo login configurable via ODOO_USER (default __system__)

Some Odoo instances require the user's actual login/email for API key
auth rather than the __system__ special login. ODOO_USER defaults to
__system__ for standard Odoo 16+ installs.

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

agent_service/config.py

@@ -8,6 +8,7 @@ class Settings(BaseSettings):
     # Odoo
     odoo_url: str = 'http://localhost:8069'
     odoo_db: str = 'odoo'
+    odoo_user: str = '__system__'
     odoo_api_key: str = ''
 
     # Ollama

agent_service/main.py

@@ -85,6 +85,7 @@ async def lifespan(app: FastAPI):
             url=settings.odoo_url,
             db=settings.odoo_db,
             api_key=settings.odoo_api_key,
+            user=settings.odoo_user,
         )
         logger.info('Odoo client initialised (%s)', settings.odoo_url)
     except Exception as exc:

agent_service/tools/odoo_client.py

@@ -37,10 +37,11 @@ class OdooWriteError(Exception): pass
 
 
 class OdooClient:
-    def __init__(self, url, db, api_key, pg_dsn=None, pg_pool_min=2, pg_pool_max=10):
+    def __init__(self, url, db, api_key, user='__system__', pg_dsn=None, pg_pool_min=2, pg_pool_max=10):
         self._url = url.rstrip('/')
         self._db = db
         self._api_key = api_key
+        self._user = user
         self._pg_dsn = pg_dsn
         self._pg_pool_min = pg_pool_min
         self._pg_pool_max = pg_pool_max
@@ -77,7 +78,7 @@ class OdooClient:
             try:
                 uid = await self._xmlrpc_call(
                     self._common, 'authenticate',
-                    self._db, '__system__', self._api_key, {})
+                    self._db, self._user, self._api_key, {})
                 if not uid:
                     raise OdooAuthError('Authentication failed - check ODOO_API_KEY')
                 self._uid = uid