docs: 更新协议文档并清理过时计划文件

docs/protocols/ui/ui-schema.md

@@ -162,6 +162,12 @@ interface UiBadgeNode extends UiBaseNode {
 }
 ```
 
+`label` contract:
+- Backend SHOULD return stable i18n tokens for status badges: `ui.status.info|success|warning|error|pending`
+- Frontend is responsible for localizing these tokens by current locale
+- Backward compatibility: frontend SHOULD still tolerate legacy uppercase labels (`INFO/SUCCESS/...`) during migration
+- Unknown token fallback: frontend SHOULD keep original label (no semantic remap to other statuses)
+
 #### 4. Button Node
 
 ```typescript
@@ -455,7 +461,7 @@ interface UiIconSpec {
           },
           {
             "type": "badge",
-            "label": "ERROR",
+            "label": "ui.status.error",
             "status": "error"
           }
         ]
@@ -729,7 +735,7 @@ UiSchemaRenderer (for frontend rendering)
         "gap": 8,
         "children": [
           {"type": "text", "content": "日程已创建", "role": "title"},
-          {"type": "badge", "label": "SUCCESS", "status": "success"}
+          {"type": "badge", "label": "ui.status.success", "status": "success"}
         ],
         "justify": "space-between",
         "align": "center"