Fix issue 135 chat context bleed (#281)

* Fix issue 135 chat context bleed

* Guard task delivery metadata access

src/task_scheduler.py

@@ -979,10 +979,10 @@ class TaskScheduler:
             task = db.query(ScheduledTask).filter(ScheduledTask.id == task_id).first()
             if not task:
                 return True
-            task_type = task.task_type or "llm"
+            task_type = getattr(task, "task_type", "") or "llm"
             if task_type != "action":
                 return True
-            return (task.action or "") in self._MODEL_BACKED_ACTIONS
+            return (getattr(task, "action", "") or "") in self._MODEL_BACKED_ACTIONS
         finally:
             db.close()
 
@@ -992,7 +992,7 @@ class TaskScheduler:
         if "check-in" in (task.name or "").lower():
             return
         # Built-in housekeeping noise stays out of the chat.
-        if (task.action or "") in self._SILENT_ACTIONS:
+        if (getattr(task, "action", "") or "") in self._SILENT_ACTIONS:
             return
         from src.assistant_log import log_to_assistant
         log_to_assistant(
@@ -1408,6 +1408,12 @@ class TaskScheduler:
         from core.database import Session as DbSession, ChatMessage, CrewMember
 
         output = task.output_target or "session"
+        if (
+            output == "session"
+            and (getattr(task, "task_type", "") or "") == "action"
+            and (getattr(task, "action", "") or "") in self._SILENT_ACTIONS
+        ):
+            return
         if output.startswith("mcp__"):
             await self._deliver_via_mcp(output, task, result)
             return
@@ -2069,6 +2075,8 @@ class TaskScheduler:
                 # Built-in housekeeping/action jobs should not create browser
                 # task notifications; user AI/research tasks still can.
                 task.notifications_enabled = False
+                if (task.output_target or "session") == "session":
+                    task.output_target = defs.get("output_target", "none")
             seeded = []
             for action, defs in HOUSEKEEPING_DEFAULTS.items():
                 if action in existing_actions:
@@ -2099,7 +2107,7 @@ class TaskScheduler:
                     # AI/email/calendar tasks opt into a paused starting state
                     # via ship_paused so users can enable them deliberately.
                     status="paused" if ships_paused else "active",
-                    output_target="session",
+                    output_target=defs.get("output_target", "none"),
                     notifications_enabled=False,
                 )
                 db.add(task)