refactor: 重构邮箱验证模块并修复代码审查问题

- 重构: 将 verification 模块重命名为 email，目录结构更清晰
- 新增: 独立的邮件配置管理页面 (EmailSettings.vue)
- 新增: 邮件模板管理功能（支持自定义 HTML 模板和预览）
- 新增: 查询验证状态 API，支持页面刷新后恢复验证流程
- 新增: 注册邮箱后缀白名单/黑名单限制功能
- 修复: 统一密码最小长度为 6 位（前后端一致）
- 修复: SMTP 连接添加 30 秒超时配置，防止 worker 挂起
- 修复: 邮件模板变量添加 HTML 转义，防止 XSS
- 修复: 验证状态清除改为 db.commit 后执行，避免竞态条件
- 优化: RegisterDialog 重写验证码输入组件，提升用户体验
- 优化: Input 组件支持 disableAutofill 属性

frontend/src/views/admin/EmailSettings.vue

@@ -0,0 +1,856 @@
+<template>
+  <PageContainer>
+    <PageHeader
+      title="邮件配置"
+      description="配置邮件发送服务和注册邮箱限制"
+    />
+
+    <div class="mt-6 space-y-6">
+      <!-- SMTP 邮件配置 -->
+      <CardSection
+        title="SMTP 邮件配置"
+        description="配置 SMTP 服务用于发送验证码邮件"
+      >
+        <template #actions>
+          <div class="flex gap-2">
+            <Button
+              size="sm"
+              variant="outline"
+              :disabled="testSmtpLoading"
+              @click="handleTestSmtp"
+            >
+              {{ testSmtpLoading ? '测试中...' : '测试连接' }}
+            </Button>
+            <Button
+              size="sm"
+              :disabled="smtpSaveLoading"
+              @click="saveSmtpConfig"
+            >
+              {{ smtpSaveLoading ? '保存中...' : '保存' }}
+            </Button>
+          </div>
+        </template>
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
+          <div>
+            <Label
+              for="smtp-host"
+              class="block text-sm font-medium"
+            >
+              SMTP 服务器地址
+            </Label>
+            <Input
+              id="smtp-host"
+              v-model="emailConfig.smtp_host"
+              type="text"
+              placeholder="smtp.gmail.com"
+              class="mt-1"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              邮件服务器地址
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-port"
+              class="block text-sm font-medium"
+            >
+              SMTP 端口
+            </Label>
+            <Input
+              id="smtp-port"
+              v-model.number="emailConfig.smtp_port"
+              type="number"
+              placeholder="587"
+              class="mt-1"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              常用端口: 587 (TLS), 465 (SSL), 25 (无加密)
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-user"
+              class="block text-sm font-medium"
+            >
+              SMTP 用户名
+            </Label>
+            <Input
+              id="smtp-user"
+              v-model="emailConfig.smtp_user"
+              type="text"
+              placeholder="your-email@example.com"
+              class="mt-1"
+              autocomplete="off"
+              data-lpignore="true"
+              data-1p-ignore="true"
+              data-form-type="other"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              通常是您的邮箱地址
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-password"
+              class="block text-sm font-medium"
+            >
+              SMTP 密码
+            </Label>
+            <div class="relative mt-1">
+              <Input
+                id="smtp-password"
+                v-model="emailConfig.smtp_password"
+                type="text"
+                :placeholder="smtpPasswordIsSet ? '已设置（留空保持不变）' : '请输入密码'"
+                class="-webkit-text-security-disc"
+                :class="smtpPasswordIsSet ? 'pr-8' : ''"
+                autocomplete="one-time-code"
+                data-lpignore="true"
+                data-1p-ignore="true"
+                data-form-type="other"
+              />
+              <button
+                v-if="smtpPasswordIsSet"
+                type="button"
+                class="absolute right-2 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground transition-colors"
+                title="清除已保存的密码"
+                @click="handleClearSmtpPassword"
+              >
+                <svg
+                  xmlns="http://www.w3.org/2000/svg"
+                  width="16"
+                  height="16"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  stroke="currentColor"
+                  stroke-width="2"
+                  stroke-linecap="round"
+                  stroke-linejoin="round"
+                >
+                  <path d="M18 6 6 18" /><path d="m6 6 12 12" />
+                </svg>
+              </button>
+            </div>
+            <p class="mt-1 text-xs text-muted-foreground">
+              邮箱密码或应用专用密码
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-from-email"
+              class="block text-sm font-medium"
+            >
+              发件人邮箱
+            </Label>
+            <Input
+              id="smtp-from-email"
+              v-model="emailConfig.smtp_from_email"
+              type="email"
+              placeholder="noreply@example.com"
+              class="mt-1"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              显示为发件人的邮箱地址
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-from-name"
+              class="block text-sm font-medium"
+            >
+              发件人名称
+            </Label>
+            <Input
+              id="smtp-from-name"
+              v-model="emailConfig.smtp_from_name"
+              type="text"
+              placeholder="Aether"
+              class="mt-1"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              显示为发件人的名称
+            </p>
+          </div>
+
+          <div>
+            <Label
+              for="smtp-encryption"
+              class="block text-sm font-medium mb-2"
+            >
+              加密方式
+            </Label>
+            <Select
+              v-model="smtpEncryption"
+              v-model:open="smtpEncryptionSelectOpen"
+            >
+              <SelectTrigger
+                id="smtp-encryption"
+                class="mt-1"
+              >
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="ssl">
+                  SSL (隐式加密)
+                </SelectItem>
+                <SelectItem value="tls">
+                  TLS / STARTTLS
+                </SelectItem>
+                <SelectItem value="none">
+                  无加密
+                </SelectItem>
+              </SelectContent>
+            </Select>
+            <p class="mt-1 text-xs text-muted-foreground">
+              Gmail 等服务推荐使用 SSL
+            </p>
+          </div>
+        </div>
+      </CardSection>
+
+      <!-- 邮件模板配置 -->
+      <CardSection
+        title="邮件模板"
+        description="配置不同类型邮件的 HTML 模板"
+      >
+        <template #actions>
+          <Button
+            size="sm"
+            :disabled="templateSaveLoading"
+            @click="handleSaveTemplate"
+          >
+            {{ templateSaveLoading ? '保存中...' : '保存' }}
+          </Button>
+        </template>
+        <!-- 模板类型选择 -->
+        <div class="flex items-center gap-2 mb-4">
+          <button
+            v-for="tpl in templateTypes"
+            :key="tpl.type"
+            class="px-3 py-1.5 text-sm font-medium rounded-md transition-colors"
+            :class="activeTemplateType === tpl.type
+              ? 'bg-primary text-primary-foreground'
+              : 'bg-muted text-muted-foreground hover:text-foreground'"
+            @click="handleTemplateTypeChange(tpl.type)"
+          >
+            {{ tpl.name }}
+            <span
+              v-if="tpl.is_custom"
+              class="ml-1 text-xs opacity-70"
+            >(已自定义)</span>
+          </button>
+        </div>
+
+        <!-- 当前模板编辑区 -->
+        <div
+          v-if="currentTemplate"
+          class="space-y-4"
+        >
+          <!-- 可用变量提示 -->
+          <div class="text-xs text-muted-foreground bg-muted/50 rounded-md px-3 py-2">
+            可用变量:
+            <code
+              v-for="(v, i) in currentTemplate.variables"
+              :key="v"
+              class="mx-1 px-1.5 py-0.5 bg-background rounded text-foreground"
+            >{{ formatVariable(v) }}<span v-if="i < currentTemplate.variables.length - 1">,</span></code>
+          </div>
+
+          <!-- 邮件主题 -->
+          <div>
+            <Label
+              for="template-subject"
+              class="block text-sm font-medium"
+            >
+              邮件主题
+            </Label>
+            <Input
+              id="template-subject"
+              v-model="templateSubject"
+              type="text"
+              :placeholder="currentTemplate.default_subject || '验证码'"
+              class="mt-1"
+            />
+          </div>
+
+          <!-- HTML 模板编辑 -->
+          <div>
+            <Label
+              for="template-html"
+              class="block text-sm font-medium"
+            >
+              HTML 模板
+            </Label>
+            <textarea
+              id="template-html"
+              v-model="templateHtml"
+              rows="16"
+              class="mt-1 w-full font-mono text-sm bg-muted/30 border border-border rounded-md p-3 focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent resize-y"
+              :placeholder="currentTemplate.default_html || '<!DOCTYPE html>...'"
+              spellcheck="false"
+            />
+          </div>
+
+          <!-- 操作按钮 -->
+          <div class="flex gap-2">
+            <Button
+              variant="outline"
+              :disabled="previewLoading"
+              @click="handlePreviewTemplate"
+            >
+              {{ previewLoading ? '加载中...' : '预览' }}
+            </Button>
+            <Button
+              variant="outline"
+              :disabled="!currentTemplate.is_custom"
+              @click="handleResetTemplate"
+            >
+              重置为默认
+            </Button>
+          </div>
+        </div>
+
+        <!-- 加载中状态 -->
+        <div
+          v-else-if="templateLoading"
+          class="py-8 text-center text-muted-foreground"
+        >
+          正在加载模板...
+        </div>
+      </CardSection>
+
+      <!-- 预览对话框 -->
+      <Dialog
+        v-model:open="previewDialogOpen"
+        no-padding
+        max-width="xl"
+      >
+        <!-- 自定义窗口布局 -->
+        <div class="flex flex-col max-h-[80vh]">
+          <!-- 窗口标题栏 -->
+          <div class="flex items-center justify-between px-4 py-2.5 bg-muted/50 border-b border-border/50 flex-shrink-0">
+            <div class="flex items-center gap-3">
+              <button
+                type="button"
+                class="flex gap-1.5 group"
+                title="关闭"
+                @click="previewDialogOpen = false"
+              >
+                <div class="w-2.5 h-2.5 rounded-full bg-red-400/80 group-hover:bg-red-500" />
+                <div class="w-2.5 h-2.5 rounded-full bg-yellow-400/80" />
+                <div class="w-2.5 h-2.5 rounded-full bg-green-400/80" />
+              </button>
+              <span class="text-sm font-medium text-foreground/80">邮件预览</span>
+            </div>
+            <div class="text-xs text-muted-foreground font-mono">
+              {{ currentTemplate?.name || '模板' }}
+            </div>
+          </div>
+
+          <!-- 邮件头部信息 -->
+          <div class="px-4 py-3 bg-muted/30 border-b border-border/30 space-y-1.5 flex-shrink-0">
+            <div class="flex items-center gap-2 text-sm">
+              <span class="text-muted-foreground w-14">主题:</span>
+              <span class="font-medium text-foreground">{{ templateSubject || '(无主题)' }}</span>
+            </div>
+            <div class="flex items-center gap-2 text-sm">
+              <span class="text-muted-foreground w-14">收件人:</span>
+              <span class="text-foreground/80">example@example.com</span>
+            </div>
+          </div>
+
+          <!-- 邮件内容区域 - 直接显示邮件模板 -->
+          <div class="flex-1 overflow-auto">
+            <iframe
+              v-if="previewHtml"
+              ref="previewIframe"
+              :srcdoc="previewHtml"
+              class="w-full border-0"
+              style="min-height: 400px;"
+              sandbox="allow-same-origin"
+              @load="adjustIframeHeight"
+            />
+          </div>
+        </div>
+      </Dialog>
+
+      <!-- 注册邮箱限制 -->
+      <CardSection
+        title="注册邮箱限制"
+        description="控制允许注册的邮箱后缀，支持白名单或黑名单模式"
+      >
+        <template #actions>
+          <Button
+            size="sm"
+            :disabled="emailSuffixSaveLoading"
+            @click="saveEmailSuffixConfig"
+          >
+            {{ emailSuffixSaveLoading ? '保存中...' : '保存' }}
+          </Button>
+        </template>
+        <div class="space-y-4">
+          <div>
+            <Label
+              for="email-suffix-mode"
+              class="block text-sm font-medium mb-2"
+            >
+              限制模式
+            </Label>
+            <Select
+              v-model="emailConfig.email_suffix_mode"
+              v-model:open="emailSuffixModeSelectOpen"
+            >
+              <SelectTrigger
+                id="email-suffix-mode"
+                class="mt-1"
+              >
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="none">
+                  不限制 - 允许所有邮箱
+                </SelectItem>
+                <SelectItem value="whitelist">
+                  白名单 - 仅允许列出的后缀
+                </SelectItem>
+                <SelectItem value="blacklist">
+                  黑名单 - 拒绝列出的后缀
+                </SelectItem>
+              </SelectContent>
+            </Select>
+            <p class="mt-1 text-xs text-muted-foreground">
+              <template v-if="emailConfig.email_suffix_mode === 'none'">
+                不限制邮箱后缀，所有邮箱均可注册
+              </template>
+              <template v-else-if="emailConfig.email_suffix_mode === 'whitelist'">
+                仅允许下方列出后缀的邮箱注册
+              </template>
+              <template v-else>
+                拒绝下方列出后缀的邮箱注册
+              </template>
+            </p>
+          </div>
+
+          <div v-if="emailConfig.email_suffix_mode !== 'none'">
+            <Label
+              for="email-suffix-list"
+              class="block text-sm font-medium"
+            >
+              邮箱后缀列表
+            </Label>
+            <Input
+              id="email-suffix-list"
+              v-model="emailSuffixListStr"
+              placeholder="gmail.com, outlook.com, qq.com"
+              class="mt-1"
+            />
+            <p class="mt-1 text-xs text-muted-foreground">
+              逗号分隔，例如: gmail.com, outlook.com, qq.com
+            </p>
+          </div>
+        </div>
+      </CardSection>
+    </div>
+  </PageContainer>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import Button from '@/components/ui/button.vue'
+import Input from '@/components/ui/input.vue'
+import Label from '@/components/ui/label.vue'
+import Select from '@/components/ui/select.vue'
+import SelectTrigger from '@/components/ui/select-trigger.vue'
+import SelectValue from '@/components/ui/select-value.vue'
+import SelectContent from '@/components/ui/select-content.vue'
+import SelectItem from '@/components/ui/select-item.vue'
+import Dialog from '@/components/ui/dialog/Dialog.vue'
+import { PageHeader, PageContainer, CardSection } from '@/components/layout'
+import { useToast } from '@/composables/useToast'
+import { adminApi, type EmailTemplateInfo } from '@/api/admin'
+import { log } from '@/utils/logger'
+
+const { success, error } = useToast()
+
+interface EmailConfig {
+  // SMTP 邮件配置
+  smtp_host: string | null
+  smtp_port: number
+  smtp_user: string | null
+  smtp_password: string | null
+  smtp_use_tls: boolean
+  smtp_use_ssl: boolean
+  smtp_from_email: string | null
+  smtp_from_name: string
+  // 注册邮箱限制
+  email_suffix_mode: 'none' | 'whitelist' | 'blacklist'
+  email_suffix_list: string[]
+}
+
+const smtpSaveLoading = ref(false)
+const emailSuffixSaveLoading = ref(false)
+const smtpEncryptionSelectOpen = ref(false)
+const emailSuffixModeSelectOpen = ref(false)
+const testSmtpLoading = ref(false)
+const smtpPasswordIsSet = ref(false)
+
+// 邮件模板相关状态
+const templateLoading = ref(false)
+const templateSaveLoading = ref(false)
+const previewLoading = ref(false)
+const previewDialogOpen = ref(false)
+const previewHtml = ref('')
+const templateTypes = ref<EmailTemplateInfo[]>([])
+const activeTemplateType = ref('verification')
+const templateSubject = ref('')
+const templateHtml = ref('')
+const previewIframe = ref<HTMLIFrameElement | null>(null)
+
+// 当前选中的模板
+const currentTemplate = computed(() => {
+  return templateTypes.value.find(t => t.type === activeTemplateType.value)
+})
+
+// 格式化变量显示（避免 Vue 模板中的双花括号语法冲突）
+function formatVariable(name: string): string {
+  return `{{${name}}}`
+}
+
+// 调整 iframe 高度以适应内容
+function adjustIframeHeight() {
+  if (previewIframe.value) {
+    try {
+      const doc = previewIframe.value.contentDocument || previewIframe.value.contentWindow?.document
+      if (doc && doc.body) {
+        // 获取内容实际高度，添加一点余量
+        const height = doc.body.scrollHeight + 20
+        // 限制最大高度为视口的 70%
+        const maxHeight = window.innerHeight * 0.7
+        previewIframe.value.style.height = `${Math.min(height, maxHeight)}px`
+      }
+    } catch {
+      // 跨域限制时使用默认高度
+      previewIframe.value.style.height = '500px'
+    }
+  }
+}
+
+const emailConfig = ref<EmailConfig>({
+  // SMTP 邮件配置
+  smtp_host: null,
+  smtp_port: 587,
+  smtp_user: null,
+  smtp_password: null,
+  smtp_use_tls: true,
+  smtp_use_ssl: false,
+  smtp_from_email: null,
+  smtp_from_name: 'Aether',
+  // 注册邮箱限制
+  email_suffix_mode: 'none',
+  email_suffix_list: [],
+})
+
+// 计算属性：邮箱后缀列表数组和字符串之间的转换
+const emailSuffixListStr = computed({
+  get: () => emailConfig.value.email_suffix_list.join(', '),
+  set: (val: string) => {
+    emailConfig.value.email_suffix_list = val
+      .split(',')
+      .map(s => s.trim().toLowerCase())
+      .filter(s => s.length > 0)
+  }
+})
+
+// 计算属性：SMTP 加密方式（ssl/tls/none）
+const smtpEncryption = computed({
+  get: () => {
+    if (emailConfig.value.smtp_use_ssl) return 'ssl'
+    if (emailConfig.value.smtp_use_tls) return 'tls'
+    return 'none'
+  },
+  set: (val: string) => {
+    emailConfig.value.smtp_use_ssl = val === 'ssl'
+    emailConfig.value.smtp_use_tls = val === 'tls'
+  }
+})
+
+onMounted(async () => {
+  await Promise.all([
+    loadEmailConfig(),
+    loadEmailTemplates()
+  ])
+})
+
+async function loadEmailTemplates() {
+  templateLoading.value = true
+  try {
+    const response = await adminApi.getEmailTemplates()
+    templateTypes.value = response.templates
+
+    // 设置第一个模板为当前模板
+    if (response.templates.length > 0) {
+      const firstTemplate = response.templates[0]
+      activeTemplateType.value = firstTemplate.type
+      templateSubject.value = firstTemplate.subject
+      templateHtml.value = firstTemplate.html
+    }
+  } catch (err) {
+    error('加载邮件模板失败')
+    log.error('加载邮件模板失败:', err)
+  } finally {
+    templateLoading.value = false
+  }
+}
+
+function handleTemplateTypeChange(type: string) {
+  activeTemplateType.value = type
+  const template = templateTypes.value.find(t => t.type === type)
+  if (template) {
+    templateSubject.value = template.subject
+    templateHtml.value = template.html
+  }
+}
+
+async function handleSaveTemplate() {
+  templateSaveLoading.value = true
+  try {
+    await adminApi.updateEmailTemplate(activeTemplateType.value, {
+      subject: templateSubject.value,
+      html: templateHtml.value
+    })
+
+    // 更新本地状态
+    const idx = templateTypes.value.findIndex(t => t.type === activeTemplateType.value)
+    if (idx !== -1) {
+      templateTypes.value[idx].subject = templateSubject.value
+      templateTypes.value[idx].html = templateHtml.value
+      templateTypes.value[idx].is_custom = true
+    }
+
+    success('模板保存成功')
+  } catch (err) {
+    error('保存模板失败')
+    log.error('保存模板失败:', err)
+  } finally {
+    templateSaveLoading.value = false
+  }
+}
+
+async function handlePreviewTemplate() {
+  previewLoading.value = true
+  try {
+    const response = await adminApi.previewEmailTemplate(activeTemplateType.value, {
+      html: templateHtml.value
+    })
+    previewHtml.value = response.html
+    previewDialogOpen.value = true
+  } catch (err) {
+    error('预览模板失败')
+    log.error('预览模板失败:', err)
+  } finally {
+    previewLoading.value = false
+  }
+}
+
+async function handleResetTemplate() {
+  try {
+    const response = await adminApi.resetEmailTemplate(activeTemplateType.value)
+
+    // 更新本地状态
+    const idx = templateTypes.value.findIndex(t => t.type === activeTemplateType.value)
+    if (idx !== -1) {
+      templateTypes.value[idx].subject = response.template.subject
+      templateTypes.value[idx].html = response.template.html
+      templateTypes.value[idx].is_custom = false
+    }
+
+    templateSubject.value = response.template.subject
+    templateHtml.value = response.template.html
+
+    success('模板已重置为默认值')
+  } catch (err) {
+    error('重置模板失败')
+    log.error('重置模板失败:', err)
+  }
+}
+
+async function loadEmailConfig() {
+  try {
+    const configs = [
+      // SMTP 邮件配置
+      'smtp_host',
+      'smtp_port',
+      'smtp_user',
+      'smtp_password',
+      'smtp_use_tls',
+      'smtp_use_ssl',
+      'smtp_from_email',
+      'smtp_from_name',
+      // 注册邮箱限制
+      'email_suffix_mode',
+      'email_suffix_list',
+    ]
+
+    for (const key of configs) {
+      try {
+        const response = await adminApi.getSystemConfig(key)
+        // 特殊处理敏感字段：只记录是否已设置，不填充值
+        if (key === 'smtp_password') {
+          smtpPasswordIsSet.value = response.is_set === true
+          // 不设置 smtp_password 的值，保持为 null
+        } else if (response.value !== null && response.value !== undefined) {
+          (emailConfig.value as any)[key] = response.value
+        }
+      } catch {
+        // 配置不存在时使用默认值，无需处理
+      }
+    }
+  } catch (err) {
+    error('加载邮件配置失败')
+    log.error('加载邮件配置失败:', err)
+  }
+}
+
+// 保存 SMTP 配置
+async function saveSmtpConfig() {
+  smtpSaveLoading.value = true
+  try {
+    const configItems = [
+      {
+        key: 'smtp_host',
+        value: emailConfig.value.smtp_host,
+        description: 'SMTP 服务器地址'
+      },
+      {
+        key: 'smtp_port',
+        value: emailConfig.value.smtp_port,
+        description: 'SMTP 端口'
+      },
+      {
+        key: 'smtp_user',
+        value: emailConfig.value.smtp_user,
+        description: 'SMTP 用户名'
+      },
+      // 只有输入了新密码才提交（空值表示保持原密码）
+      ...(emailConfig.value.smtp_password
+        ? [{
+            key: 'smtp_password',
+            value: emailConfig.value.smtp_password,
+            description: 'SMTP 密码'
+          }]
+        : []),
+      {
+        key: 'smtp_use_tls',
+        value: emailConfig.value.smtp_use_tls,
+        description: '是否使用 TLS 加密'
+      },
+      {
+        key: 'smtp_use_ssl',
+        value: emailConfig.value.smtp_use_ssl,
+        description: '是否使用 SSL 加密'
+      },
+      {
+        key: 'smtp_from_email',
+        value: emailConfig.value.smtp_from_email,
+        description: '发件人邮箱'
+      },
+      {
+        key: 'smtp_from_name',
+        value: emailConfig.value.smtp_from_name,
+        description: '发件人名称'
+      },
+    ]
+
+    const promises = configItems.map(item =>
+      adminApi.updateSystemConfig(item.key, item.value, item.description)
+    )
+
+    await Promise.all(promises)
+    success('SMTP 配置已保存')
+  } catch (err) {
+    error('保存配置失败')
+    log.error('保存 SMTP 配置失败:', err)
+  } finally {
+    smtpSaveLoading.value = false
+  }
+}
+
+// 保存邮箱后缀限制配置
+async function saveEmailSuffixConfig() {
+  emailSuffixSaveLoading.value = true
+  try {
+    const configItems = [
+      {
+        key: 'email_suffix_mode',
+        value: emailConfig.value.email_suffix_mode,
+        description: '邮箱后缀限制模式（none/whitelist/blacklist）'
+      },
+      {
+        key: 'email_suffix_list',
+        value: emailConfig.value.email_suffix_list,
+        description: '邮箱后缀列表'
+      },
+    ]
+
+    const promises = configItems.map(item =>
+      adminApi.updateSystemConfig(item.key, item.value, item.description)
+    )
+
+    await Promise.all(promises)
+    success('邮箱限制配置已保存')
+  } catch (err) {
+    error('保存配置失败')
+    log.error('保存邮箱限制配置失败:', err)
+  } finally {
+    emailSuffixSaveLoading.value = false
+  }
+}
+
+// 清除 SMTP 密码
+async function handleClearSmtpPassword() {
+  try {
+    await adminApi.deleteSystemConfig('smtp_password')
+    smtpPasswordIsSet.value = false
+    emailConfig.value.smtp_password = null
+    success('SMTP 密码已清除')
+  } catch (err) {
+    error('清除密码失败')
+    log.error('清除 SMTP 密码失败:', err)
+  }
+}
+
+// 测试 SMTP 连接
+async function handleTestSmtp() {
+  testSmtpLoading.value = true
+
+  try {
+    // 如果没有输入新密码，不发送（后端会使用数据库中的密码）
+    const result = await adminApi.testSmtpConnection({
+      smtp_host: emailConfig.value.smtp_host,
+      smtp_port: emailConfig.value.smtp_port,
+      smtp_user: emailConfig.value.smtp_user,
+      smtp_password: emailConfig.value.smtp_password || undefined,
+      smtp_use_tls: emailConfig.value.smtp_use_tls,
+      smtp_use_ssl: emailConfig.value.smtp_use_ssl,
+      smtp_from_email: emailConfig.value.smtp_from_email,
+      smtp_from_name: emailConfig.value.smtp_from_name
+    })
+    if (result.success) {
+      success('SMTP 连接测试成功')
+    } else {
+      error(result.message || '未知错误', 'SMTP 连接测试失败')
+    }
+  } catch (err: any) {
+    log.error('SMTP 连接测试失败:', err)
+    const errMsg = err.response?.data?.detail || err.message || '未知错误'
+    error(errMsg, 'SMTP 连接测试失败')
+  } finally {
+    testSmtpLoading.value = false
+  }
+}
+</script>

frontend/src/views/admin/SystemSettings.vue

@@ -185,218 +185,6 @@
         </div>
       </CardSection>
 
-      <!-- SMTP 邮件配置 -->
-      <CardSection
-        title="SMTP 邮件配置"
-        description="配置 SMTP 服务用于发送验证码邮件"
-      >
-        <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-          <div>
-            <Label
-              for="smtp-host"
-              class="block text-sm font-medium"
-            >
-              SMTP 服务器地址
-            </Label>
-            <Input
-              id="smtp-host"
-              v-model="systemConfig.smtp_host"
-              type="text"
-              placeholder="smtp.gmail.com"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              邮件服务器地址
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="smtp-port"
-              class="block text-sm font-medium"
-            >
-              SMTP 端口
-            </Label>
-            <Input
-              id="smtp-port"
-              v-model.number="systemConfig.smtp_port"
-              type="number"
-              placeholder="587"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              常用端口: 587 (TLS), 465 (SSL), 25 (非加密)
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="smtp-user"
-              class="block text-sm font-medium"
-            >
-              SMTP 用户名
-            </Label>
-            <Input
-              id="smtp-user"
-              v-model="systemConfig.smtp_user"
-              type="text"
-              placeholder="your-email@example.com"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              通常是您的邮箱地址
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="smtp-password"
-              class="block text-sm font-medium"
-            >
-              SMTP 密码
-            </Label>
-            <Input
-              id="smtp-password"
-              v-model="systemConfig.smtp_password"
-              type="password"
-              placeholder="********"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              邮箱密码或应用专用密码
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="smtp-from-email"
-              class="block text-sm font-medium"
-            >
-              发件人邮箱
-            </Label>
-            <Input
-              id="smtp-from-email"
-              v-model="systemConfig.smtp_from_email"
-              type="email"
-              placeholder="noreply@example.com"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              显示为发件人的邮箱地址
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="smtp-from-name"
-              class="block text-sm font-medium"
-            >
-              发件人名称
-            </Label>
-            <Input
-              id="smtp-from-name"
-              v-model="systemConfig.smtp_from_name"
-              type="text"
-              placeholder="Aether"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              显示为发件人的名称
-            </p>
-          </div>
-
-          <div>
-            <Label
-              for="verification-code-expire"
-              class="block text-sm font-medium"
-            >
-              验证码有效期（分钟）
-            </Label>
-            <Input
-              id="verification-code-expire"
-              v-model.number="systemConfig.verification_code_expire_minutes"
-              type="number"
-              placeholder="30"
-              class="mt-1"
-            />
-            <p class="mt-1 text-xs text-muted-foreground">
-              验证码的有效时间
-            </p>
-          </div>
-
-          <div class="flex items-center h-full">
-            <div class="flex items-center space-x-2">
-              <Checkbox
-                id="smtp-use-tls"
-                v-model:checked="systemConfig.smtp_use_tls"
-              />
-              <div>
-                <Label
-                  for="smtp-use-tls"
-                  class="cursor-pointer"
-                >
-                  使用 TLS 加密
-                </Label>
-                <p class="text-xs text-muted-foreground">
-                  推荐开启以提高安全性
-                </p>
-              </div>
-            </div>
-          </div>
-
-          <div class="flex items-center h-full">
-            <div class="flex items-center space-x-2">
-              <Checkbox
-                id="smtp-use-ssl"
-                v-model:checked="systemConfig.smtp_use_ssl"
-              />
-              <div>
-                <Label
-                  for="smtp-use-ssl"
-                  class="cursor-pointer"
-                >
-                  使用 SSL 加密 (465)
-                </Label>
-                <p class="text-xs text-muted-foreground">
-                  部分服务需要隐式 SSL，一般使用端口 465
-                </p>
-              </div>
-            </div>
-          </div>
-        </div>
-
-        <div class="mt-4 flex gap-2">
-          <Button
-            type="button"
-            variant="outline"
-            :disabled="testSmtpLoading"
-            @click="handleTestSmtp"
-          >
-            {{ testSmtpLoading ? '测试中...' : '测试 SMTP 连接' }}
-          </Button>
-        </div>
-
-        <div
-          v-if="smtpTestResult"
-          class="mt-4 p-4 rounded-lg"
-          :class="smtpTestResult.success ? 'bg-green-50 dark:bg-green-950' : 'bg-destructive/10'"
-        >
-          <p
-            class="text-sm font-medium"
-            :class="smtpTestResult.success ? 'text-green-700 dark:text-green-300' : 'text-destructive'"
-          >
-            {{ smtpTestResult.success ? '✓ SMTP 连接测试成功' : '✗ SMTP 连接测试失败' }}
-          </p>
-          <p
-            v-if="smtpTestResult.message"
-            class="text-xs mt-1"
-            :class="smtpTestResult.success ? 'text-green-600 dark:text-green-400' : 'text-destructive'"
-          >
-            {{ smtpTestResult.message }}
-          </p>
-        </div>
-      </CardSection>
-
       <!-- 独立余额 Key 过期管理 -->
       <CardSection
         title="独立余额 Key 过期管理"
@@ -981,7 +769,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, onMounted } from 'vue'
+import { ref, computed, onMounted, watch } from 'vue'
 import { Download, Upload } from 'lucide-vue-next'
 import Button from '@/components/ui/button.vue'
 import Input from '@/components/ui/input.vue'
@@ -1009,16 +797,6 @@ interface SystemConfig {
   // 用户注册
   enable_registration: boolean
   require_email_verification: boolean
-  // SMTP 邮件配置
-  smtp_host: string | null
-  smtp_port: number
-  smtp_user: string | null
-  smtp_password: string | null
-  smtp_use_tls: boolean
-  smtp_use_ssl: boolean
-  smtp_from_email: string | null
-  smtp_from_name: string
-  verification_code_expire_minutes: number
   // 独立余额 Key 过期管理
   auto_delete_expired_keys: boolean
   // 日志记录
@@ -1038,8 +816,6 @@ interface SystemConfig {
 
 const loading = ref(false)
 const logLevelSelectOpen = ref(false)
-const testSmtpLoading = ref(false)
-const smtpTestResult = ref<{ success: boolean; message?: string } | null>(null)
 
 // 导出/导入相关
 const exportLoading = ref(false)
@@ -1070,16 +846,6 @@ const systemConfig = ref<SystemConfig>({
   // 用户注册
   enable_registration: false,
   require_email_verification: false,
-  // SMTP 邮件配置
-  smtp_host: null,
-  smtp_port: 587,
-  smtp_user: null,
-  smtp_password: null,
-  smtp_use_tls: true,
-  smtp_use_ssl: false,
-  smtp_from_email: null,
-  smtp_from_name: 'Aether',
-  verification_code_expire_minutes: 30,
   // 独立余额 Key 过期管理
   auto_delete_expired_keys: false,
   // 日志记录
@@ -1136,16 +902,6 @@ async function loadSystemConfig() {
       // 用户注册
       'enable_registration',
       'require_email_verification',
-      // SMTP 邮件配置
-      'smtp_host',
-      'smtp_port',
-      'smtp_user',
-      'smtp_password',
-      'smtp_use_tls',
-      'smtp_use_ssl',
-      'smtp_from_email',
-      'smtp_from_name',
-      'verification_code_expire_minutes',
       // 独立余额 Key 过期管理
       'auto_delete_expired_keys',
       // 日志记录
@@ -1205,52 +961,6 @@ async function saveSystemConfig() {
         value: systemConfig.value.require_email_verification,
         description: '是否需要邮箱验证'
       },
-      // SMTP 邮件配置
-      {
-        key: 'smtp_host',
-        value: systemConfig.value.smtp_host,
-        description: 'SMTP 服务器地址'
-      },
-      {
-        key: 'smtp_port',
-        value: systemConfig.value.smtp_port,
-        description: 'SMTP 端口'
-      },
-      {
-        key: 'smtp_user',
-        value: systemConfig.value.smtp_user,
-        description: 'SMTP 用户名'
-      },
-      {
-        key: 'smtp_password',
-        value: systemConfig.value.smtp_password,
-        description: 'SMTP 密码'
-      },
-      {
-        key: 'smtp_use_tls',
-        value: systemConfig.value.smtp_use_tls,
-        description: '是否使用 TLS 加密'
-      },
-      {
-        key: 'smtp_use_ssl',
-        value: systemConfig.value.smtp_use_ssl,
-        description: '是否使用 SSL 加密'
-      },
-      {
-        key: 'smtp_from_email',
-        value: systemConfig.value.smtp_from_email,
-        description: '发件人邮箱'
-      },
-      {
-        key: 'smtp_from_name',
-        value: systemConfig.value.smtp_from_name,
-        description: '发件人名称'
-      },
-      {
-        key: 'verification_code_expire_minutes',
-        value: systemConfig.value.verification_code_expire_minutes,
-        description: '验证码有效期（分钟）'
-      },
       // 独立余额 Key 过期管理
       {
         key: 'auto_delete_expired_keys',
@@ -1330,41 +1040,6 @@ async function saveSystemConfig() {
   }
 }
 
-// 测试 SMTP 连接
-async function handleTestSmtp() {
-  testSmtpLoading.value = true
-  smtpTestResult.value = null
-
-  try {
-    const result = await adminApi.testSmtpConnection({
-      smtp_host: systemConfig.value.smtp_host,
-      smtp_port: systemConfig.value.smtp_port,
-      smtp_user: systemConfig.value.smtp_user,
-      smtp_password: systemConfig.value.smtp_password,
-      smtp_use_tls: systemConfig.value.smtp_use_tls,
-      smtp_use_ssl: systemConfig.value.smtp_use_ssl,
-      smtp_from_email: systemConfig.value.smtp_from_email,
-      smtp_from_name: systemConfig.value.smtp_from_name
-    })
-    smtpTestResult.value = result
-
-    if (result.success) {
-      success('SMTP 连接测试成功')
-    } else {
-      error('SMTP 连接测试失败')
-    }
-  } catch (err: any) {
-    log.error('SMTP 连接测试失败:', err)
-    smtpTestResult.value = {
-      success: false,
-      message: err.response?.data?.detail || err.message || 'SMTP 连接测试失败'
-    }
-    error('SMTP 连接测试失败')
-  } finally {
-    testSmtpLoading.value = false
-  }
-}
-
 // 导出配置
 async function handleExportConfig() {
   exportLoading.value = true

frontend/src/views/user/Settings.vue

@@ -477,8 +477,8 @@ async function changePassword() {
     return
   }
 
-  if (passwordForm.value.new_password.length < 8) {
-    showError('密码长度至少8位')
+  if (passwordForm.value.new_password.length < 6) {
+    showError('密码长度至少6位')
     return
   }