feat: 实现功能3强制更新

- 新增 ForceUpdateCommand 类实现强制更新功能
- 添加 force-update CLI 命令支持
- 实现参数验证、配置对比、CDN缓存刷新
- 添加完整的测试用例和使用示例
- 更新文档和进度跟踪
- 支持模拟环境测试
- 添加警告提示和错误处理

主要文件:
- src/config_man/core/force_update_command.py (新增)
- src/config_man/cli/main.py (更新)
- examples/test_force_update.py (新增)
- examples/force_update_usage.py (新增)
- docs/progress-tracker.md (更新)

src/config_man/utils/config.py

@@ -49,7 +49,11 @@ class Config:
             "cdn": {
                 "base_url": "",
                 "timeout": 10,
-                "retry_count": 3
+                "retry_count": 3,
+                "cloudflare": {
+                    "api_token": "",
+                    "zone_id": ""
+                }
             },
             "crypto": {
                 "algorithm": "DES",
@@ -98,6 +102,8 @@ class Config:
             "CONFIG_MAN_CDN_BASE_URL": ("cdn", "base_url"),
             "CONFIG_MAN_CDN_TIMEOUT": ("cdn", "timeout"),
             "CONFIG_MAN_CDN_RETRY_COUNT": ("cdn", "retry_count"),
+            "CONFIG_MAN_CDN_CLOUDFLARE_API_TOKEN": ("cdn", "cloudflare", "api_token"),
+            "CONFIG_MAN_CDN_CLOUDFLARE_ZONE_ID": ("cdn", "cloudflare", "zone_id"),
             "CONFIG_MAN_CRYPTO_KEY": ("crypto", "key"),
             "CONFIG_MAN_CRYPTO_ALGORITHM": ("crypto", "algorithm"),
             "CONFIG_MAN_LOG_LEVEL": ("logging", "level"),
@@ -216,6 +222,18 @@ class Config:
     def get_logging_config(self) -> Dict[str, Any]:
         """获取日志配置"""
         return self.get('logging', {})
+    
+    def get_cloudflare_config(self) -> Dict[str, Any]:
+        """获取Cloudflare配置"""
+        return self.get('cdn.cloudflare', {})
+    
+    def get_cloudflare_api_token(self) -> str:
+        """获取Cloudflare API Token"""
+        return self.get('cdn.cloudflare.api_token', '')
+    
+    def get_cloudflare_zone_id(self) -> str:
+        """获取Cloudflare Zone ID"""
+        return self.get('cdn.cloudflare.zone_id', '')
 
 
 # 全局配置实例