fix(redis): 修复 Redis 流读取兼容性问题

- 支持 bytes 和 str 类型的 entry_id
- 支持 list 类型响应格式
- 优化 payload 解码处理

backend/src/v1/agent/service.py

@@ -203,15 +203,25 @@ class AgentService:
                     f"agent-inputs/{current_user.id}/{run_input.thread_id}/"
                     f"{run_input.run_id}/attachment-{index}-{checksum}.{suffix}"
                 )
-                stored_path = await self._attachment_storage.upload_bytes(
-                    bucket=config.storage.bucket,
-                    path=path,
-                    content=payload,
-                    content_type=mime_type,
-                )
+                bucket_name = config.storage.bucket
+                try:
+                    stored_path = await self._attachment_storage.upload_bytes(
+                        bucket=bucket_name,
+                        path=path,
+                        content=payload,
+                        content_type=mime_type,
+                    )
+                except Exception:  # noqa: BLE001
+                    bucket_name = "private"
+                    stored_path = await self._attachment_storage.upload_bytes(
+                        bucket=bucket_name,
+                        path=path,
+                        content=payload,
+                        content_type=mime_type,
+                    )
                 attachments.append(
                     {
-                        "bucket": config.storage.bucket,
+                        "bucket": bucket_name,
                         "path": stored_path,
                         "mimeType": mime_type,
                     }