fix(agent features):

1.Voice output is generated in a streaming manner.
2.Multimodal file storage type repair;
3.Adding features to the configuration of the sub-agents in the multi-agent system

api/app/services/file_storage_service.py

@@ -9,7 +9,7 @@ and error handling.
 import logging
 import time
 import uuid
-from typing import Optional
+from typing import AsyncIterator, Optional
 
 from app.core.storage import StorageFactory, StorageBackend
 from app.core.storage_exceptions import (
@@ -162,6 +162,31 @@ class FileStorageService:
                 cause=e,
             )
 
+    async def upload_stream(
+        self,
+        tenant_id: uuid.UUID,
+        workspace_id: uuid.UUID | None,
+        file_id: uuid.UUID,
+        file_ext: str,
+        stream: AsyncIterator[bytes],
+        content_type: Optional[str] = None,
+    ) -> int:
+        """
+        Upload a file from an async byte stream.
+
+        Returns:
+            Total bytes written.
+        """
+        file_key = generate_file_key(tenant_id, workspace_id, file_id, file_ext)
+        logger.info(f"Starting stream upload: file_key={file_key}, content_type={content_type}")
+        try:
+            total = await self.storage.upload_stream(file_key, stream, content_type)
+            logger.info(f"Stream upload successful: file_key={file_key}, size={total} bytes")
+            return total
+        except Exception as e:
+            logger.error(f"Stream upload failed: file_key={file_key}, error={str(e)}")
+            raise
+
     async def download_file(self, file_key: str) -> bytes:
         """
         Download a file from storage.