diff --git a/app.py b/app.py
index 34c93e9..9492a87 100644
--- a/app.py
+++ b/app.py
@@ -1076,7 +1076,7 @@ def project_autostart(pid):
         return jsonify({'ok': False, 'error': '请先在编辑项目中设置 AI 主管 Worker'}), 400
     if not db.q('SELECT 1 FROM project_team_workers WHERE project_id=?', (pid,)):
         return jsonify({'ok': False, 'error': '请先在编辑项目中勾选干活团队 Worker（≥1 个）'}), 400
-    d = request.get_json(force=True) or {}
+    d = request.get_json(silent=True) or {}
     ok = autostart.launch(pid, review_required=1 if d.get('auto_review') else 0)
     if not ok:
         return jsonify({'ok': False, 'error': 'AI 主管正在工作中，请稍候'}), 400
diff --git a/autostart.py b/autostart.py
index 5cf5c4b..50f93da 100644
--- a/autostart.py
+++ b/autostart.py
@@ -47,19 +47,39 @@ REVISE_PROMPT = (
 )
 
 
-def parse_wbs(text):
-    """从 LLM 输出中稳健提取 JSON 任务列表"""
+def _extract_json(text):
+    """用 raw_decode 稳健提取第一个完整 JSON 值（自动忽略尾部杂质/多余 JSON）"""
     t = text.strip()
     if t.startswith('```'):
         t = t.strip('`')
         if t.startswith('json'):
             t = t[4:]
         t = t.strip()
-    start = min([i for i in (t.find('{'), t.find('[')) if i >= 0] or [0])
-    end = max(t.rfind('}'), t.rfind(']')) + 1
-    data = json.loads(t[start:end])
-    tasks = data['tasks'] if isinstance(data, dict) else data
-    assert isinstance(tasks, list) and tasks, '任务列表为空'
+    candidates = [i for i in (t.find('{'), t.find('[')) if i >= 0]
+    last_err = None
+    for i in sorted(candidates):
+        try:
+            obj, _ = json.JSONDecoder().raw_decode(t[i:])
+            return obj
+        except Exception as e:
+            last_err = e
+    raise last_err or ValueError('未找到 JSON 内容')
+
+
+def parse_wbs(text):
+    """从 LLM 输出中稳健提取 JSON 任务列表（兼容任务键名/多余内容）"""
+    try:
+        data = _extract_json(text)
+    except Exception:
+        raise
+    if isinstance(data, dict):
+        for key in ('tasks', 'subtasks', 'task_list', 'items', 'task'):
+            if key in data:
+                data = data[key]
+                break
+    tasks = data if isinstance(data, list) else []
+    if not tasks:
+        raise ValueError('任务列表为空或格式不正确')
     return tasks
 
 
@@ -100,20 +120,6 @@ def _chat_json(worker, messages, max_tokens=3000, temperature=0.3):
     raise last_err or ValueError('JSON 解析失败')
 
 
-def _extract_json(text):
-    t = text.strip()
-    if t.startswith('```'):
-        t = t.strip('`')
-        if t.startswith('json'):
-            t = t[4:]
-        t = t.strip()
-    start = min([i for i in (t.find('{'), t.find('[')) if i >= 0] or [0])
-    end = max(t.rfind('}'), t.rfind(']')) + 1
-    if end <= start:
-        raise ValueError('未找到 JSON 内容')
-    return json.loads(t[start:end])
-
-
 # ---------------------------------------------------------------------------
 # 团队读取
 # ---------------------------------------------------------------------------