diff --git a/src/api/blackboard_routes.py b/src/api/blackboard_routes.py
index 8c24135..2c512f9 100644
--- a/src/api/blackboard_routes.py
+++ b/src/api/blackboard_routes.py
@@ -366,6 +366,30 @@ async def add_review(project_id: str, task_id: str, body: Dict[str, Any]):
     return {"ok": True, "review_id": review.id}
 
 
+@router.patch("/tasks/{task_id}")
+async def patch_task(project_id: str, task_id: str, body: Dict[str, Any]):
+    """更新任务元数据（归档、标题等）"""
+    bb = _bb(project_id)
+    task = bb.get_task(task_id)
+    if not task:
+        raise HTTPException(404, f"Task {task_id} not found")
+    allowed = {"archived", "title", "description", "priority", "risk_level"}
+    updates = {k: v for k, v in body.items() if k in allowed}
+    if not updates:
+        return {"ok": True}
+    # 直接用 SQL 更新
+    import sqlite3
+    conn = sqlite3.connect(str(bb.db_path), timeout=5)
+    try:
+        set_clause = ", ".join(f"{k}=?" for k in updates)
+        conn.execute(f"UPDATE tasks SET {set_clause}, updated_at=datetime('now') WHERE id=?",
+                     (*updates.values(), task_id))
+        conn.commit()
+    finally:
+        conn.close()
+    return {"ok": True}
+
+
 # --- Per-task Events & Experiences ---
 
 @router.get("/tasks/{task_id}/events")