feat(sync): Remove unused file renaming method from XAIService

services/xai_service.py

@@ -506,46 +506,6 @@ class XAIService:
         self._log(f"✅ Document info retrieved: {normalized.get('filename', 'N/A')}")
         return normalized
 
-    async def rename_file(
-        self,
-        file_id: str,
-        new_filename: str,
-    ) -> None:
-        """
-        Benennt eine Datei auf Files-API-Ebene um (kein Re-Upload).
-
-        PUT https://api.x.ai/v1/files/{file_id}
-
-        Laut xAI-Dokumentation können über diesen Endpunkt Dateiname und
-        content_type geändert werden – keine custom metadata-Felder.
-
-        Args:
-            file_id:      xAI file_id
-            new_filename: Neuer Dateiname
-
-        Raises:
-            RuntimeError: bei HTTP-Fehler
-        """
-        self._log(f"✏️  Renaming file {file_id} → {new_filename}")
-
-        session = await self._get_session()
-        url = f"{XAI_FILES_URL}/v1/files/{file_id}"
-        headers = {
-            "Authorization": f"Bearer {self.api_key}",
-            "Content-Type": "application/json"
-        }
-
-        body = {"filename": new_filename}
-
-        async with session.put(url, json=body, headers=headers) as response:
-            if response.status not in (200, 204):
-                raw = await response.text()
-                raise RuntimeError(
-                    f"Failed to rename file {file_id} ({response.status}): {raw}"
-                )
-
-        self._log(f"✅ File renamed: {file_id} → {new_filename}")
-
     def is_mime_type_supported(self, mime_type: str) -> bool:
         """
         Prüft, ob XAI diesen MIME-Type unterstützt.