feat: 完善企业场景多线路由与执行稳定性

补齐平台模板与场景 DSL、预算控制、执行看板和企业场景脚本，增强 Windows 启动/迁移与前端代理和聊天会话记忆，修复执行创建阶段 500 与异步链路排障体验。

Made-with: Cursor

backend/app/api/execution_logs.py

@@ -38,6 +38,114 @@ class ExecutionLogResponse(BaseModel):
         from_attributes = True
 
 
+def _has_execution_permission(db: Session, execution: Execution, current_user: User) -> bool:
+    if getattr(current_user, "role", None) == "admin":
+        return True
+    if execution.workflow_id:
+        workflow = db.query(Workflow).filter(Workflow.id == execution.workflow_id).first()
+        return bool(workflow and workflow.user_id == current_user.id)
+    if execution.agent_id:
+        agent = db.query(Agent).filter(Agent.id == execution.agent_id).first()
+        return bool(agent and (agent.user_id == current_user.id or agent.status in ["published", "running"]))
+    return False
+
+
+@router.get("/executions/{execution_id}/chain")
+async def get_execution_chain(
+    execution_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """获取父子执行链路（当前执行 + 递归子执行）。"""
+    root = db.query(Execution).filter(Execution.id == execution_id).first()
+    if not root:
+        raise NotFoundError("执行记录", execution_id)
+    if not _has_execution_permission(db, root, current_user):
+        raise NotFoundError("执行记录", execution_id)
+
+    all_execs = db.query(Execution).all()
+    by_parent: Dict[Optional[str], List[Execution]] = {}
+    for e in all_execs:
+        by_parent.setdefault(e.parent_execution_id, []).append(e)
+
+    def _build_tree(e: Execution) -> Dict[str, Any]:
+        children = by_parent.get(e.id, [])
+        children.sort(key=lambda x: x.created_at or datetime.min)
+        return {
+            "id": e.id,
+            "status": e.status,
+            "workflow_id": e.workflow_id,
+            "agent_id": e.agent_id,
+            "depth": e.depth,
+            "parent_execution_id": e.parent_execution_id,
+            "execution_time": e.execution_time,
+            "created_at": e.created_at.isoformat() if e.created_at else None,
+            "children": [_build_tree(c) for c in children],
+        }
+
+    return _build_tree(root)
+
+
+@router.get("/executions/{execution_id}/chain/summary")
+async def get_execution_chain_summary(
+    execution_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """获取父子执行链路汇总（节点数、成功失败数、总耗时）。"""
+    root = db.query(Execution).filter(Execution.id == execution_id).first()
+    if not root:
+        raise NotFoundError("执行记录", execution_id)
+    if not _has_execution_permission(db, root, current_user):
+        raise NotFoundError("执行记录", execution_id)
+
+    all_execs = db.query(Execution).all()
+    by_parent: Dict[Optional[str], List[Execution]] = {}
+    by_id: Dict[str, Execution] = {}
+    for e in all_execs:
+        by_parent.setdefault(e.parent_execution_id, []).append(e)
+        by_id[e.id] = e
+
+    stack = [root.id]
+    chain_ids: List[str] = []
+    while stack:
+        cur = stack.pop()
+        chain_ids.append(cur)
+        for c in by_parent.get(cur, []):
+            stack.append(c.id)
+
+    chain_execs = [by_id[i] for i in chain_ids if i in by_id]
+    status_count: Dict[str, int] = {
+        "pending": 0,
+        "running": 0,
+        "completed": 0,
+        "failed": 0,
+        "awaiting_approval": 0,
+    }
+    total_time = 0
+    for e in chain_execs:
+        st = (e.status or "").lower()
+        if st in status_count:
+            status_count[st] += 1
+        if isinstance(e.execution_time, int):
+            total_time += e.execution_time
+
+    max_depth = 0
+    for e in chain_execs:
+        try:
+            max_depth = max(max_depth, int(e.depth or 0))
+        except (TypeError, ValueError):
+            pass
+
+    return {
+        "root_execution_id": root.id,
+        "total_executions": len(chain_execs),
+        "status_count": status_count,
+        "total_execution_time_ms": total_time,
+        "max_depth": max_depth,
+    }
+
+
 @router.get("/executions/{execution_id}", response_model=List[ExecutionLogResponse])
 async def get_execution_logs(
     execution_id: str,
@@ -58,17 +166,7 @@ async def get_execution_logs(
         raise NotFoundError("执行记录", execution_id)
     
     # 验证权限：检查workflow或agent的所有权
-    has_permission = False
-    if execution.workflow_id:
-        workflow = db.query(Workflow).filter(Workflow.id == execution.workflow_id).first()
-        if workflow and workflow.user_id == current_user.id:
-            has_permission = True
-    elif execution.agent_id:
-        agent = db.query(Agent).filter(Agent.id == execution.agent_id).first()
-        if agent and (agent.user_id == current_user.id or agent.status in ["published", "running"]):
-            has_permission = True
-    
-    if not has_permission:
+    if not _has_execution_permission(db, execution, current_user):
         raise NotFoundError("执行记录", execution_id)
     
     # 构建查询
@@ -104,17 +202,7 @@ async def get_execution_log_summary(
         raise NotFoundError("执行记录", execution_id)
     
     # 验证权限：检查workflow或agent的所有权
-    has_permission = False
-    if execution.workflow_id:
-        workflow = db.query(Workflow).filter(Workflow.id == execution.workflow_id).first()
-        if workflow and workflow.user_id == current_user.id:
-            has_permission = True
-    elif execution.agent_id:
-        agent = db.query(Agent).filter(Agent.id == execution.agent_id).first()
-        if agent and (agent.user_id == current_user.id or agent.status in ["published", "running"]):
-            has_permission = True
-    
-    if not has_permission:
+    if not _has_execution_permission(db, execution, current_user):
         raise NotFoundError("执行记录", execution_id)
     
     # 统计各级别日志数量
@@ -184,17 +272,7 @@ async def get_execution_performance(
         raise NotFoundError("执行记录", execution_id)
     
     # 验证权限：检查workflow或agent的所有权
-    has_permission = False
-    if execution.workflow_id:
-        workflow = db.query(Workflow).filter(Workflow.id == execution.workflow_id).first()
-        if workflow and workflow.user_id == current_user.id:
-            has_permission = True
-    elif execution.agent_id:
-        agent = db.query(Agent).filter(Agent.id == execution.agent_id).first()
-        if agent and (agent.user_id == current_user.id or agent.status in ["published", "running"]):
-            has_permission = True
-    
-    if not has_permission:
+    if not _has_execution_permission(db, execution, current_user):
         raise NotFoundError("执行记录", execution_id)
     
     from sqlalchemy import func