fix: three bugs blocking bot presence and approval UI

1. OdooClient missing self._timeout — every _xmlrpc_call raised
   AttributeError, making the odoo health check permanently fail.
   Fix: set self._timeout = XMLRPC_TIMEOUT in __init__.

2. action_ping only accepted ollama=='ok' but health.py now returns
   'warming' when the model is not yet hot in VRAM. Fix: treat
   warming as passing so the bot goes online and the model loads
   on the first real request.

3. /ai/approval/pending declared methods=['GET'] on a type='json'
   route — Odoo JSON-RPC always POSTs, so every browser call got
   405 METHOD NOT ALLOWED. Fix: change to methods=['POST'].

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

agent_service/tools/odoo_client.py

@@ -45,6 +45,7 @@ class OdooClient:
         self._pg_dsn = pg_dsn
         self._pg_pool_min = pg_pool_min
         self._pg_pool_max = pg_pool_max
+        self._timeout = XMLRPC_TIMEOUT
         self._uid = None
         self._auth_lock = asyncio.Lock()
         self._pg_pool = None