feat：意图识别优化

app/schemas/operations.py

@@ -18,6 +18,9 @@ PLAN_ADJUST_OPERATIONS: tuple[str, ...] = (
     "layout",
 )
 
+# 只能通过规划完成的操作：新增要从物料目录选型并安排位置，重排要整体布局
+PLAN_ONLY_OPERATIONS: tuple[str, ...] = ("add", "reflow", "layout")
+
 # 写进协议描述和提示词的操作说明，词表变化时自动同步
 OPERATION_GUIDE = (
     f"修改已有组件用 {'、'.join(NODE_OPERATIONS)}，"
@@ -40,6 +43,13 @@ def is_direct_operation(target_scope: str, operation: str) -> bool:
     return False
 
 
+def requires_planning(target_scope: str, operation: str) -> bool:
+    """判断是否必须先规划；未登记的操作不在此列，由能力检查判为不支持"""
+    return not is_direct_operation(target_scope, operation) and (
+        operation in PLAN_ONLY_OPERATIONS
+    )
+
+
 def is_canvas_operation(target_scope: str, operation: str) -> bool:
     """判断是否为画布属性修改"""
     return target_scope == "canvas" and operation in CANVAS_OPERATIONS