feat: 自定义版本功能更新

- 新增家庭共享订阅管理
- 新增用户邀请统计
- 新增签名和订阅模式设置表单
- 更新 API 服务层和国际化文件
- UI 组件优化（enhanced-input、pro-table）

apps/admin/src/sections/auth-control/forms/email-settings-form.tsx

@@ -54,6 +54,7 @@ const emailSettingsSchema = z.object({
       expiration_email_template: z.string().optional(),
       maintenance_email_template: z.string().optional(),
       traffic_exceed_email_template: z.string().optional(),
+      delete_account_email_template: z.string().optional(),
       platform: z.string(),
       platform_config: z
         .object({
@@ -102,6 +103,7 @@ export default function EmailSettingsForm() {
         expiration_email_template: "",
         maintenance_email_template: "",
         traffic_exceed_email_template: "",
+        delete_account_email_template: "",
         platform: "smtp",
         platform_config: {
           host: "",
@@ -195,6 +197,12 @@ export default function EmailSettingsForm() {
                   <TabsTrigger value="traffic">
                     {t("email.trafficTemplate", "Traffic Template")}
                   </TabsTrigger>
+                  <TabsTrigger value="delete_account">
+                    {t(
+                      "email.deleteAccountTemplate",
+                      "Delete Account Template"
+                    )}
+                  </TabsTrigger>
                 </TabsList>
 
                 <TabsContent className="space-y-2" value="basic">
@@ -840,6 +848,88 @@ export default function EmailSettingsForm() {
                     )}
                   />
                 </TabsContent>
+
+                <TabsContent className="space-y-2" value="delete_account">
+                  <FormField
+                    control={form.control}
+                    name="config.delete_account_email_template"
+                    render={({ field }) => (
+                      <FormItem>
+                        <FormLabel>
+                          {t(
+                            "email.deleteAccountEmailTemplate",
+                            "Delete Account Email Template"
+                          )}
+                        </FormLabel>
+                        <FormControl>
+                          <HTMLEditor
+                            onChange={field.onChange}
+                            placeholder={t(
+                              "email.inputPlaceholder",
+                              "Please enter"
+                            )}
+                            value={field.value}
+                          />
+                        </FormControl>
+                        <div className="mt-4 space-y-2 border-t pt-4">
+                          <p className="font-medium text-muted-foreground text-sm">
+                            {t(
+                              "email.templateVariables.title",
+                              "Template Variables"
+                            )}
+                          </p>
+                          <div className="space-y-2 text-muted-foreground text-xs">
+                            <div className="flex items-center gap-2">
+                              <code className="rounded bg-muted px-1.5 py-0.5 font-mono text-foreground">
+                                {"{{.SiteLogo}}"}
+                              </code>
+                              <span>
+                                {t(
+                                  "email.templateVariables.siteLogo.description",
+                                  "Site logo URL"
+                                )}
+                              </span>
+                            </div>
+                            <div className="flex items-center gap-2">
+                              <code className="rounded bg-muted px-1.5 py-0.5 font-mono text-foreground">
+                                {"{{.SiteName}}"}
+                              </code>
+                              <span>
+                                {t(
+                                  "email.templateVariables.siteName.description",
+                                  "Site name"
+                                )}
+                              </span>
+                            </div>
+                            <div className="flex items-center gap-2">
+                              <code className="rounded bg-muted px-1.5 py-0.5 font-mono text-foreground">
+                                {"{{.Code}}"}
+                              </code>
+                              <span>
+                                {t(
+                                  "email.templateVariables.code.description",
+                                  "Verification code"
+                                )}
+                              </span>
+                            </div>
+                            <div className="flex items-center gap-2">
+                              <code className="rounded bg-muted px-1.5 py-0.5 font-mono text-foreground">
+                                {"{{.Expire}}"}
+                              </code>
+                              <span>
+                                {t(
+                                  "email.templateVariables.expire.description",
+                                  "Code expiration time"
+                                )}
+                              </span>
+                            </div>
+                          </div>
+                        </div>
+                        <FormMessage />
+                      </FormItem>
+                    )}
+                  />
+                </TabsContent>
               </Tabs>
             </form>
           </Form>