Issue 内容有几个格式问题，让我帮你修正：
Title:
get_task_status returns "pending" for both "submitted" and "running" states
Body:
## Bug Description
In `task_engine_mixin.py`, the `get_task_status` method incorrectly maps both "submitted" and "running" internal task states to "pending" status, preventing users from distinguishing between tasks waiting in queue and tasks currently executing.
## Affected Component
- [x] Engine
## Reproduction Steps
1. Submit a background task via the Agent-as-a-Service API
2. Poll task status using `get_task_status(task_id)` immediately after submission
3. Continue polling while task executes
4. Observe that status remains "pending" throughout both "submitted" and "running" phases
## Expected vs Actual Behavior
**Expected:**
- When task is in queue (submitted): `{"status": "pending", "result": None}`
- When task is executing (running): `{"status": "running", "started_at": <timestamp>, "result": None}`
**Actual:**
- Both submitted and running states return `{"status": "pending", "result": None}`
## Error Messages
No error message, but incorrect behavior. The problematic code in `task_engine_mixin.py`:
if task_status in ["submitted", "running"]:
return {"status": "pending", "result": None}
## Environment
- AgentScope Runtime Version: Latest (pip installed)
- Python Version: 3.11
- Installation: pip
## Additional Context
**Impact:**
- Users cannot monitor long-running background tasks properly
- No visibility into task execution progress
- The `started_at` timestamp (already tracked in `task_info`) is not exposed
**Suggested Fix:**
if task_status == "submitted":
return {"status": "pending", "result": None}
elif task_status == "running":
return {
"status": "running",
"started_at": task_info.get("started_at"),
"result": None,
}
This fix correctly distinguishes between pending and running states, exposes the `started_at` timestamp for running tasks, and maintains backward compatibility for completed/failed states.
Issue 内容有几个格式问题，让我帮你修正：
Title:
Body:
if task_status in ["submitted", "running"]:
return {"status": "pending", "result": None}
if task_status == "submitted":
return {"status": "pending", "result": None}
elif task_status == "running":
return {
"status": "running",
"started_at": task_info.get("started_at"),
"result": None,
}