fix: auto-fix code issues (cron)

- 修复重复导入/字段
- 修复异常处理
- 修复PEP8格式问题
- 添加类型注解

backend/tingwu_client.py

@@ -6,7 +6,7 @@
 import os
 import time
 from datetime import datetime
-from typing import Dict, Any
+from typing import Any
 
 
 class TingwuClient:
@@ -18,7 +18,7 @@ class TingwuClient:
         if not self.access_key or not self.secret_key:
             raise ValueError("ALI_ACCESS_KEY and ALI_SECRET_KEY required")
 
-    def _sign_request(self, method: str, uri: str, query: str = "", body: str = "") -> Dict[str, str]:
+    def _sign_request(self, method: str, uri: str, query: str = "", body: str = "") -> dict[str, str]:
         """阿里云签名 V3"""
         timestamp = datetime.utcnow().strftime('%Y-%m-%dT%H:%M:%SZ')
 
@@ -35,9 +35,9 @@ class TingwuClient:
     def create_task(self, audio_url: str, language: str = "zh") -> str:
         """创建听悟任务"""
         try:
+            from alibabacloud_tea_openapi import models as open_api_models
             from alibabacloud_tingwu20230930 import models as tingwu_models
             from alibabacloud_tingwu20230930.client import Client as TingwuSDKClient
-            from alibabacloud_tea_openapi import models as open_api_models
 
             config = open_api_models.Config(
                 access_key_id=self.access_key,
@@ -74,12 +74,12 @@ class TingwuClient:
             print(f"Tingwu API error: {e}")
             return f"mock_task_{int(time.time())}"
 
-    def get_task_result(self, task_id: str, max_retries: int = 60, interval: int = 5) -> Dict[str, Any]:
+    def get_task_result(self, task_id: str, max_retries: int = 60, interval: int = 5) -> dict[str, Any]:
         """获取任务结果"""
         try:
+            from alibabacloud_tea_openapi import models as open_api_models
             from alibabacloud_tingwu20230930 import models as tingwu_models
             from alibabacloud_tingwu20230930.client import Client as TingwuSDKClient
-            from alibabacloud_tea_openapi import models as open_api_models
 
             config = open_api_models.Config(
                 access_key_id=self.access_key,
@@ -114,7 +114,7 @@ class TingwuClient:
 
         raise TimeoutError(f"Task {task_id} timeout")
 
-    def _parse_result(self, data) -> Dict[str, Any]:
+    def _parse_result(self, data) -> dict[str, Any]:
         """解析结果"""
         result = data.result
         transcription = result.transcription
@@ -140,7 +140,7 @@ class TingwuClient:
             "segments": segments
         }
 
-    def _mock_result(self) -> Dict[str, Any]:
+    def _mock_result(self) -> dict[str, Any]:
         """Mock 结果"""
         return {
             "full_text": "这是一个示例转录文本，包含 Project Alpha 和 K8s 等术语。",
@@ -149,7 +149,7 @@ class TingwuClient:
             ]
         }
 
-    def transcribe(self, audio_url: str, language: str = "zh") -> Dict[str, Any]:
+    def transcribe(self, audio_url: str, language: str = "zh") -> dict[str, Any]:
         """一键转录"""
         task_id = self.create_task(audio_url, language)
         print(f"Tingwu task: {task_id}")