feat: 实现邮箱验证注册功能

添加完整的邮箱验证注册系统,包括验证码发送、验证和限流控制:
  - 新增邮箱验证服务模块(email_sender, email_template, email_verification)
  - 更新认证API支持邮箱验证注册流程
  - 添加注册对话框和验证码输入组件
  - 完善IP限流器支持邮箱验证场景
  - 修复前端类型定义问题,升级esbuild依赖

  🤖 Generated with [Claude Code](https://claude.com/claude-code)

  Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend/src/features/providers/components/KeyAllowedModelsDialog.vue

@@ -126,8 +126,14 @@
               :disabled="testingModelName === model.global_model_name"
               @click.stop="testModelConnection(model)"
             >
-              <Loader2 v-if="testingModelName === model.global_model_name" class="w-3.5 h-3.5 animate-spin" />
-              <Play v-else class="w-3.5 h-3.5" />
+              <Loader2
+                v-if="testingModelName === model.global_model_name"
+                class="w-3.5 h-3.5 animate-spin"
+              />
+              <Play
+                v-else
+                class="w-3.5 h-3.5"
+              />
             </Button>
           </div>
         </div>