Studio: fix edit/run UI and write worldbook on advance (R6)

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/services/worldbook_service.py

@@ -232,6 +232,32 @@ class WorldBookService:
         
         raise FileNotFoundError(f"Entry '{uid}' not found in worldbook '{name}'")
     
+    @staticmethod
+    def append_entry(name: str, entry_data: Dict[str, Any]) -> Dict[str, Any]:
+        """
+        在世界书中追加条目（规范化后写入，与 Chat 侧条目格式一致）。
+
+        Args:
+            name: 世界书名称（文件名，不含 .json）
+            entry_data: 条目字段（content、comment、activationType、position 等）
+
+        Returns:
+            写入后的规范化条目
+        """
+        data = WorldBookService._load_worldbook(name)
+        if not data:
+            raise FileNotFoundError(f"Worldbook '{name}' not found")
+
+        if not isinstance(data.get("entries"), list):
+            data["entries"] = []
+
+        normalized = WorldBookConverter.normalize_entry(entry_data)
+        data["entries"].append(normalized)
+        now = int(datetime.now().timestamp())
+        data["updatedAt"] = now
+        WorldBookService._save_worldbook(name, data)
+        return normalized
+
     @staticmethod
     def create_entry(name: str, entry_data: Dict[str, Any]) -> Dict[str, Any]:
         """