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/test_phase8_task6.py

@@ -10,17 +10,20 @@ InsightFlow Phase 8 Task 6: Developer Ecosystem Test Script
 4. 开发者文档与示例代码
 """
 
-from developer_ecosystem_manager import (
-    DeveloperEcosystemManager,
-    SDKLanguage, TemplateCategory,
-    PluginCategory, PluginStatus,
-    DeveloperStatus
-)
-import sys
 import os
+import sys
 import uuid
 from datetime import datetime
 
+from developer_ecosystem_manager import (
+    DeveloperEcosystemManager,
+    DeveloperStatus,
+    PluginCategory,
+    PluginStatus,
+    SDKLanguage,
+    TemplateCategory,
+)
+
 # Add backend directory to path
 backend_dir = os.path.dirname(os.path.abspath(__file__))
 if backend_dir not in sys.path: