Cancel background tasks when Odysseus becomes active

src/interactive_gate.py

@@ -97,6 +97,21 @@ def _has_recent_browser_activity(now: float | None = None) -> bool:
     return ((now if now is not None else time.monotonic()) - _LAST_BROWSER_ACTIVITY) < ttl
 
 
+def has_foreground_activity(now: float | None = None) -> bool:
+    """Return True when foreground browser/model work should stop background jobs.
+
+    This is intentionally narrower than `wait_for_interactive_quiet`: active
+    request tracking is good for delaying task startup, but a running task
+    should not cancel itself just because the UI polls a passive endpoint.
+    Browser heartbeats and active chat streams are the durable "user is here"
+    signals.
+    """
+    if not _enabled():
+        return False
+    t = now if now is not None else time.monotonic()
+    return _has_recent_browser_activity(t) or _has_active_chat_stream()
+
+
 def _has_active_chat_stream() -> bool:
     """Best-effort check for foreground model work that outlives HTTP requests.
 

src/task_scheduler.py

@@ -825,6 +825,27 @@ class TaskScheduler:
             # previous llm/research run's model. The executors set it once the
             # model is resolved.
             self._last_run_model = None
+            foreground_cancel = {"hit": False}
+            foreground_monitor = None
+            if gate_foreground:
+                current_task = asyncio.current_task()
+
+                async def _cancel_if_foreground_active():
+                    # Give the just-finished quiet gate a tiny grace window,
+                    # then keep enforcing "background means background" while
+                    # a long email/LLM action is already running.
+                    await asyncio.sleep(1.0)
+                    from src.interactive_gate import has_foreground_activity
+                    while True:
+                        await asyncio.sleep(1.0)
+                        if has_foreground_activity():
+                            foreground_cancel["hit"] = True
+                            logger.info("Task '%s' interrupted because Odysseus became active", task.name)
+                            if current_task:
+                                current_task.cancel()
+                            return
+
+                foreground_monitor = asyncio.create_task(_cancel_if_foreground_active())
             try:
                 if task_type == "action":
                     result, success = await self._execute_action(task, run_id=run_id)
@@ -864,15 +885,22 @@ class TaskScheduler:
                 db.commit()
                 return
             except asyncio.CancelledError:
-                logger.info("Task '%s' stopped by user", task.name)
+                msg = (
+                    "Paused because Odysseus became active"
+                    if foreground_cancel.get("hit")
+                    else "Stopped by user"
+                )
+                logger.info("Task '%s' %s", task.name, msg)
                 run_obj = db.query(TaskRun).filter(TaskRun.id == run_id).first()
                 if run_obj:
                     run_obj.status = "aborted"
-                    run_obj.error = "Stopped by user"
-                    run_obj.result = run_obj.result or "Stopped by user"
+                    run_obj.error = msg
+                    run_obj.result = run_obj.result or msg
                     run_obj.finished_at = _utcnow()
                 task.last_run = _utcnow()
-                if (task.trigger_type or "schedule") == "schedule":
+                if foreground_cancel.get("hit"):
+                    task.next_run = _utcnow() + timedelta(minutes=15)
+                elif (task.trigger_type or "schedule") == "schedule":
                     task.next_run = compute_next_run(
                         task.schedule, task.scheduled_time,
                         task.scheduled_day, task.scheduled_date,
@@ -907,6 +935,13 @@ class TaskScheduler:
                     task.next_run = None
                 db.commit()
                 return
+            finally:
+                if foreground_monitor and not foreground_monitor.done():
+                    foreground_monitor.cancel()
+                    try:
+                        await foreground_monitor
+                    except asyncio.CancelledError:
+                        pass
 
             run.finished_at = _utcnow()