feat: add endpoint candidates support and code formatting improvements

- Add endpointCandidates field to ProviderPreset and CodexProviderPreset interfaces
- Integrate preset endpoint candidates into speed test endpoint selection
- Add multiple endpoint options for PackyCode providers (Claude & Codex)
- Apply consistent code formatting (trailing commas, line breaks)
- Improve template value type safety and readability

src/config/providerPresets.ts

@@ -20,6 +20,8 @@ export interface ProviderPreset {
   category?: ProviderCategory; // 新增：分类
   // 新增：模板变量定义，用于动态替换配置中的值
   templateValues?: Record<string, TemplateValueConfig>; // editorValue 存储编辑器中的实时输入值
+  // 新增：请求地址候选列表（用于地址管理/测速）
+  endpointCandidates?: string[];
 }
 
 export const providerPresets: ProviderPreset[] = [
@@ -108,6 +110,14 @@ export const providerPresets: ProviderPreset[] = [
         ANTHROPIC_AUTH_TOKEN: "",
       },
     },
+    // 请求地址候选（用于地址管理/测速）
+    endpointCandidates: [
+      "https://api.packycode.com",
+      "https://api-hk-cn2.packycode.com",
+      "https://api-hk-g.packycode.com",
+      "https://api-us-cn2.packycode.com",
+      "https://api-cf-pro.packycode.com",
+    ],
     category: "third_party",
   },
   {