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

自动修复统计:
- 修复了1177个格式问题
- 删除了多余的空行
- 清理了行尾空格
- 移除了重复导入和未使用的导入

backend/plugin_manager.py

@@ -11,7 +11,6 @@ import json
 import os
 import sqlite3
 import time
-import urllib.parse
 import uuid
 from dataclasses import dataclass, field
 from datetime import datetime
@@ -31,7 +30,6 @@ try:
 except ImportError:
     WEBDAV_AVAILABLE = False
 
-
 class PluginType(Enum):
     """插件类型"""
 
@@ -43,7 +41,6 @@ class PluginType(Enum):
     WEBDAV = "webdav"
     CUSTOM = "custom"
 
-
 class PluginStatus(Enum):
     """插件状态"""
 
@@ -52,7 +49,6 @@ class PluginStatus(Enum):
     ERROR = "error"
     PENDING = "pending"
 
-
 @dataclass
 class Plugin:
     """插件配置"""
@@ -68,7 +64,6 @@ class Plugin:
     last_used_at: str | None = None
     use_count: int = 0
 
-
 @dataclass
 class PluginConfig:
     """插件详细配置"""
@@ -81,7 +76,6 @@ class PluginConfig:
     created_at: str = ""
     updated_at: str = ""
 
-
 @dataclass
 class BotSession:
     """机器人会话"""
@@ -99,7 +93,6 @@ class BotSession:
     last_message_at: str | None = None
     message_count: int = 0
 
-
 @dataclass
 class WebhookEndpoint:
     """Webhook 端点配置（Zapier/Make集成）"""
@@ -118,7 +111,6 @@ class WebhookEndpoint:
     last_triggered_at: str | None = None
     trigger_count: int = 0
 
-
 @dataclass
 class WebDAVSync:
     """WebDAV 同步配置"""
@@ -140,7 +132,6 @@ class WebDAVSync:
     updated_at: str = ""
     sync_count: int = 0
 
-
 @dataclass
 class ChromeExtensionToken:
     """Chrome 扩展令牌"""
@@ -157,7 +148,6 @@ class ChromeExtensionToken:
     use_count: int = 0
     is_revoked: bool = False
 
-
 class PluginManager:
     """插件管理主类"""
 
@@ -409,7 +399,6 @@ class PluginManager:
         conn.commit()
         conn.close()
 
-
 class ChromeExtensionHandler:
     """Chrome 扩展处理器"""
 
@@ -438,7 +427,6 @@ class ChromeExtensionHandler:
         now = datetime.now().isoformat()
         expires_at = None
         if expires_days:
-            from datetime import timedelta
 
             expires_at = (datetime.now() + timedelta(days=expires_days)).isoformat()
 
@@ -618,7 +606,6 @@ class ChromeExtensionHandler:
             "content_length": len(content),
         }
 
-
 class BotHandler:
     """飞书/钉钉机器人处理器"""
 
@@ -953,7 +940,6 @@ class BotHandler:
             )
             return response.status_code == 200
 
-
 class WebhookIntegration:
     """Zapier/Make Webhook 集成"""
 
@@ -1179,7 +1165,6 @@ class WebhookIntegration:
             "message": "Test event sent successfully" if success else "Failed to send test event",
         }
 
-
 class WebDAVSyncManager:
     """WebDAV 同步管理"""
 
@@ -1441,11 +1426,9 @@ class WebDAVSyncManager:
 
             return {"success": False, "error": str(e)}
 
-
 # Singleton instance
 _plugin_manager = None
 
-
 def get_plugin_manager(db_manager=None) -> None:
     """获取 PluginManager 单例"""
     global _plugin_manager