- feat(types): add Provider.meta and ProviderMeta (snake_case) with custom_endpoints map

- feat(provider-form): persist custom endpoints on provider create by merging EndpointSpeedTest’s custom URLs into meta.custom_endpoints on submit

- feat(endpoint-speed-test): add onCustomEndpointsChange callback emitting normalized custom URLs; wire it for both Claude/Codex modals

- fix(api): send alias param names (app/appType/app_type and provider_id/providerId) in Tauri invokes to avoid “missing providerId” with older backends

- storage: custom endpoints are stored in ~/.cc-switch/config.json under providers[<id>].meta.custom_endpoints (not in settings.json)

- behavior: edit flow remains immediate writes; create flow now writes once via addProvider, removing the providerId dependency during creation

src/types.ts

@@ -13,6 +13,8 @@ export interface Provider {
   // 新增：供应商分类（用于差异化提示/能力开关）
   category?: ProviderCategory;
   createdAt?: number; // 添加时间戳（毫秒）
+  // 可选：供应商元数据（仅存于 ~/.cc-switch/config.json，不写入 live 配置）
+  meta?: ProviderMeta;
 }
 
 export interface AppConfig {
@@ -27,6 +29,12 @@ export interface CustomEndpoint {
   lastUsed?: number;
 }
 
+// 供应商元数据（字段名与后端一致，保持 snake_case）
+export interface ProviderMeta {
+  // 自定义端点：以 URL 为键，值为端点信息
+  custom_endpoints?: Record<string, CustomEndpoint>;
+}
+
 // 应用设置类型（用于 SettingsModal 与 Tauri API）
 export interface Settings {
   // 是否在系统托盘（macOS 菜单栏）显示图标