feat：对接中心平台，完善接口鉴权

app/actions/update.py

@@ -3,6 +3,7 @@
 from copy import deepcopy
 
 from app.actions.base import BaseActionHandler
+from app.resources.material_fields import editable_fields, known_prop_keys
 from app.schemas.actions import UpdateAction
 from app.schemas.screen import Screen
 
@@ -16,6 +17,19 @@ class UpdateHandler(BaseActionHandler[UpdateAction]):
         if action.section == "style" and target.style is None:
             target.style = {}
 
+        # props 第一层不能新造字段：渲染器不会读取约定外的字段，新造只会“成功”却没有效果
+        if action.section == "props":
+            known = known_prop_keys(target)
+            if known is not None and action.path[0] not in known:
+                labels = "、".join(
+                    f"{field['label']}={field['section']}.{field['path']}"
+                    for field in editable_fields(target.type)
+                )
+                raise ValueError(
+                    f"组件 {target.type} 的 props 没有字段 {action.path[0]!r}，"
+                    f"不能新造组件级属性；可编辑字段：{labels or '无'}"
+                )
+
         # 获取动作指定的属性区域，作为路径遍历的起点
         current = getattr(target, action.section)
         # 逐段访问路径，只有到达末级时才写入新值