fix: harden master agent synthesize/memory, fix expense create fields

- _synthesize: short-circuit on any single-agent report (avoids extra
  Ollama call that can timeout); wrap multi-agent LLM call in try/except
- _update_memory: catch exceptions so DB/memory failures don't kill reply
- _log_directive_start: use 0 instead of NULL for channel_id (NOT NULL col)
- create_expense: drop 'description' field (not valid on hr.expense in Odoo 18)

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

agent_service/agents/master_agent.py

@@ -273,29 +273,37 @@ class MasterAgent:
     async def _synthesize(self, reports, context: MasterContext) -> str:
         if not reports:
             return 'No agent responses received.'
-        if len(reports) == 1 and reports[0].status == 'complete':
-            return reports[0].summary
+        if len(reports) == 1:
+            return reports[0].summary or '(no summary)'
         summaries = chr(10).join(f'{r.agent}: {r.summary}' for r in reports)
         msg = ('Synthesize these agent reports into one coherent response. '
                'Business language only. No internal IDs. '
                'Separate: actions completed, items pending approval, recommendations.'
                + chr(10) + summaries)
-        resp = await self._llm.submit(
-            [{'role': 'system', 'content': 'You are a business intelligence assistant.'},
-             {'role': 'user', 'content': msg}],
-            caller='master_synthesis')
-        return resp.content
+        try:
+            resp = await self._llm.submit(
+                [{'role': 'system', 'content': 'You are a business intelligence assistant.'},
+                 {'role': 'user', 'content': msg}],
+                caller='master_synthesis')
+            return resp.content or summaries
+        except Exception as exc:
+            logger.warning('_synthesize LLM call failed, falling back to raw summaries: %s', exc)
+            return summaries
 
     async def _update_memory(self, user_id, message, response, reports, directive_id):
-        # User message is persisted at the top of handle_message — only save
-        # the assistant reply here.
-        await self._memory.append_message(user_id, 'assistant', response, directive_id)
+        try:
+            await self._memory.append_message(user_id, 'assistant', response or '', directive_id)
+        except Exception as exc:
+            logger.warning('_update_memory: append_message failed: %s', exc)
         for report in reports:
             if report.data:
-                await self._memory.store_findings(
-                    scope=report.agent.replace('_agent', ''),
-                    summary=report.summary, raw_data=report.data,
-                    source_directive_id=directive_id)
+                try:
+                    await self._memory.store_findings(
+                        scope=report.agent.replace('_agent', ''),
+                        summary=report.summary, raw_data=report.data,
+                        source_directive_id=directive_id)
+                except Exception as exc:
+                    logger.warning('_update_memory: store_findings failed agent=%s: %s', report.agent, exc)
 
     async def handle_approval(self, directive_id, item_id, approved, approver_uid) -> str:
         if approved:
@@ -314,7 +322,7 @@ class MasterAgent:
                    '(directive_id, user_id, channel_id, raw_message, status) '
                    'VALUES ($1, $2, $3, $4, $5) ON CONFLICT (directive_id) DO NOTHING')
             async with pool.acquire(timeout=10) as conn:
-                await conn.execute(sql, directive_id, user_id, channel_id, message, 'processing')
+                await conn.execute(sql, directive_id, user_id, channel_id or 0, message, 'processing')
         except Exception as exc:
             logger.warning('_log_directive_start failed: %s', exc)
 

agent_service/tools/expenses_tools.py

@@ -127,8 +127,6 @@ class ExpensesTools:
             vals['date'] = date
         if product_id:
             vals['product_id'] = product_id
-        if description:
-            vals['description'] = description
         return await self._o.create('hr.expense', vals)
 
     async def attach_receipt(self, model: str, record_id: int, filename: str,