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>

addons/activeblue_ai/controllers/approval.py

@@ -10,7 +10,7 @@ _logger = logging.getLogger(__name__)
 
 class AiApprovalController(http.Controller):
 
-    @http.route('/ai/approval/pending', type='json', auth='user', methods=['GET'])
+    @http.route('/ai/approval/pending', type='json', auth='user', methods=['POST'])
     def list_pending(self):
         if not request.env.user.has_group('activeblue_ai.group_ai_manager'):
             return {'error': 'Access denied', 'items': []}