fix: satisfy installer shellcheck

* fix: merge account and mailbox forwarding

* docs: prepare v1.2.20 release

---------

Co-authored-by: zxyszx <299979470+zxyszx@users.noreply.github.com>

.github/release-notes/v1.2.21.md

@@ -0,0 +1,8 @@
+- 优化登录与会话流程：登录后完整返回原页面及查询条件，区分未登录、超时、取消和网络故障，并为服务不可用状态提供明确的重新连接入口。
+- 完善后台与邮箱错误处理：管理员设置、邮件列表、邮件详情、发送队列、个人资料、签名、DNS 检查及注册流程均增加真实失败提示和重试反馈，避免静默失败或错误成功提示。
+- 优化邮箱与个人设置：恢复显示名称编辑，新增可持久化的标准/紧凑邮件布局，移除无效时区和模拟资料，修正发信成功后草稿删除失败的提示逻辑。
+- 保持并强化转发规则：账号级转发目标在所有邮箱中默认勾选、置顶且不可取消，单邮箱可继续追加独立目标，现有单邮箱配置不受影响，目标按数字和字母排序。
+- 统一界面视觉与交互：采用更清晰的中性色、文字层级、焦点状态和紧凑圆角，补充图标按钮名称、工具提示及全屏页面主区域，改善桌面与移动端可访问性。
+- 优化前端加载与开发体验：拆分邮件编辑器相关代码包，控制单个构建文件体积，并支持通过 `VITE_API_TARGET` 指定本地后端代理地址。
+- 加固邮件 HTML 安全：升级 DOMPurify 至已修复版本，依赖审计无已知漏洞；同步清理过时演示数据、无效状态和旧页面逻辑。
+- 完成全量质量复核：前后端构建、Go 全量及竞态测试、SMTP、外部 IMAP、OAuth、Telegram、Webhook、转发、队列、权限隔离、安装、备份、回滚和 DKIM 同步测试均已通过。

.github/release-notes/v1.2.22.md

@@ -0,0 +1,5 @@
+- 修复 QQ 邮箱、网易邮箱、Gmail 等第三方客户端可以收信但无法发信的问题。
+- SMTP 提交服务新增 `AUTH LOGIN` 认证支持，并继续兼容 `AUTH PLAIN`；两种方式均只允许在 TLS 加密连接中使用。
+- 兼容带初始用户名和标准两步用户名/密码挑战的 LOGIN 流程，适配常见手机邮箱、Apple Mail 和 Thunderbird。
+- 客户端配置保持 IMAP 993/SSL、POP3 995/SSL、SMTP 465/SSL，不增加额外服务器地址或备用配置。
+- 新增 SMTP 能力声明、LOGIN 认证、STARTTLS、隐式 TLS 和完整发信回归测试。

.github/release-notes/v1.2.23.md

@@ -0,0 +1,5 @@
+- 优化转发验证完成页：移除“返回邮箱”入口，外部收件人确认 Netflix、ChatGPT 等验证码转发授权后不会进入邮箱登录页，只显示验证结果和关闭页面提示。
+- 合并验证邮箱搜索与添加入口：输入内容会实时筛选已添加地址，输入新邮箱时可直接发送验证邮件，已存在地址会明确显示为“已添加”。
+- 重整验证邮箱管理列表：待验证邮箱置顶展示，已验证邮箱按数字和字母排序并聚合为可折叠分组，邮箱数量较多时仍便于查找和管理。
+- 精简邮件转发主页面：不再平铺全部验证邮箱标签，改为显示已验证与待验证数量汇总，点击即可进入管理列表。
+- 补充验证完成页回归测试，确保页面不再出现邮箱首页或登录入口，并完成前端构建、组件规范、后端全量测试与静态检查。

.github/release-notes/v1.2.24.md

@@ -0,0 +1,3 @@
+- 精简邮件转发页面入口，移除右上角重复的“管理验证邮箱”按钮。
+- 保留下方汇总入口并统一命名为“管理验证邮箱”，继续显示已验证与待验证邮箱数量。
+- 没有验证邮箱时仍显示该入口，用户可直接进入添加和验证邮箱。

.github/release-notes/v1.2.25.md

@@ -0,0 +1,9 @@
+- 修复收信规则移动到自定义文件夹时被错误归入“已归档”的问题，现在会按规则名称真实创建目标文件夹。
+- 修正发件人、附件名、邮件大小和日期条件的匹配边界，拒绝字段不支持的运算符，避免规则保存后永远无法命中。
+- “应用到现有邮件”不再处理已发送和草稿邮件，规则暂停启用时也可执行用户明确选择的现有邮件处理。
+- 完善规则动作失败处理：失败的动作不再误中止后续规则，归档、删除和移动错误不再被静默忽略。
+- 收信规则列表新增适用邮箱显示，并提供独立的上移、下移按钮，多条规则时可完整调整优先级。
+- 新增自定义文件夹图标，支持按名称自动匹配、手动选择以及上传小图标，并内置 Netflix、ChatGPT、账单、购物、旅行、工作等常用类型。
+- 上传图标会在浏览器本地缩放为 64×64 PNG，服务端校验 PNG 文件头并限制在 32 KB；不联网查询品牌，不保留上传原图。
+- 文件夹图标已在侧栏、桌面端与移动端移动菜单中统一显示，数据库升级会自动为旧文件夹补充默认图标。
+- 补充收信规则、自定义文件夹、图标自动匹配、手动图标保留和上传格式安全边界的回归测试。

.github/release-notes/v1.2.26.md

@@ -0,0 +1,7 @@
+- 修复手机端删除自定义文件夹时菜单先消失、确认框无法显示的问题，文件夹菜单现在与移动侧栏保持在同一交互层中。
+- 删除文件夹前会稳定显示确认信息，提交后显示处理中状态，避免重复操作；文件夹内邮件仍会安全移回收件箱。
+- 修复手机侧栏中新建文件夹弹窗被侧栏遮挡或立即关闭的问题，侧栏退出后再打开创建界面。
+- 重做手机端“新建规则 / 编辑规则”布局：标题、表单与底部操作区改为纵向结构，内容区域可独立滚动。
+- 优化规则条件与动作的窄屏排列，字段和运算符并排、输入框独占一行，添加与删除按钮保持易点击且不会挤出屏幕。
+- 规则底部创建和取消按钮固定可见并适配手机安全区域，多条件、多动作时仍可顺畅滚动和提交。
+- 优化通用确认弹窗的手机宽度和按钮触控尺寸，减少误触并避免贴边显示。

.github/release-notes/v1.2.27.md

@@ -0,0 +1,6 @@
+- 修复收信规则选择“移动到自定义文件夹”后立即跳回归档的问题。
+- 移除移动动作右侧显示 `Archive` 等英文内部值的旧输入框，避免系统值与中文选项重复出现。
+- 将移动目标整合为一个文件夹选择器，系统文件夹统一显示中文名称。
+- 文件夹选择器新增“系统文件夹”和“自定义文件夹”分组，自动列出当前邮箱或全部邮箱中已经创建的自定义文件夹。
+- 选择 Netflix、amazon 等自定义文件夹后会直接保存真实文件夹名称，不再错误保存为归档。
+- 已验证规则创建、列表摘要和后端数据均保留所选自定义文件夹。

.github/release-notes/v1.2.28.md

@@ -0,0 +1,8 @@
+- 收信规则页新增规则名称搜索，支持按字母或完整名称快速筛选，并提供清空搜索和空结果提示。
+- 优化规则列表的桌面端与手机端布局，规则名称、适用邮箱、条件和动作可完整换行显示，操作按钮不再挤压内容。
+- 调整新建规则工具栏与表单对齐，搜索框与规则列表等宽，“所有条件”选择器与下方条件字段保持同一左边界。
+- 邮箱侧栏的“文件夹”和“标签”支持点击展开或收起，桌面端和手机侧栏保持一致交互。
+- 降低所有对话框的背景遮罩深度，手机端和桌面端分别使用更轻的灰色层级，避免打开弹窗后页面过黑。
+- 重排“被拦截邮件”页面，统一标题、统计和新增入口，长邮箱地址与拦截原因会自动换行，不再超出边框。
+- 重排“邮件清理”页面的统计卡片和清理操作，修复窄屏文字截断、按钮挤压和横向溢出。
+- 统一前后台文字按钮样式，移除“新建规则”、“新增拦截”、权限配置、账号、域名、邮箱和转发等命令前多余的加号图标。

.github/release-notes/v1.2.29.md

@@ -0,0 +1,13 @@
+- 重构后台账号管理：新增账号统一使用“邮箱前缀 + 已有域名”创建，支持显示名称、密码二次确认、邮箱数量上限、共享存储容量和权限配置。
+- 创建用户账号时自动生成同地址默认邮箱；账号与全部绑定邮箱共用登录密码，账号重置密码后会同步更新所属邮箱。
+- 存储容量改为账号级共享：管理员默认 1 GB，普通用户默认 100 MB，最低可设置 100 MB；新增邮箱不再重复增加容量，容量检查会统计账号下全部邮箱。
+- 在账号编辑中集中管理共享存储容量，并在账号列表显示邮箱数量、共享容量、邮箱搜索与复制入口；移除邮箱地址前多余图标和重复身份标签。
+- 重做邮箱管理页面：按归属账号聚合子邮箱，支持账号或邮箱搜索、展开收起、邮箱数量统计及按地址排序，邮箱较多时仍可快速定位。
+- 默认邮箱与所属账号绑定并受到保护，管理员账号、用户默认邮箱和管理员账号下的默认邮箱均不能删除；默认邮箱也不能单独改归属或停用。
+- 普通子邮箱支持在三点菜单中启用、停用和删除；启用状态使用绿色高亮，停用状态使用红色提示，删除前必须二次确认。
+- 后台与 Open API 创建或改绑邮箱时统一继承所属账号密码和共享容量，修复遗漏容量参数时意外清零及接口绕过默认邮箱保护的问题。
+- 优化权限配置：管理员权限固定只读，普通用户系统权限和使用限制可以编辑，同时保留系统名称与说明，避免系统身份被误改。
+- 每个权限配置均提供“查看全部权限”入口，按分类展示完整权限清单，已开启项目显示勾选，未开启项目保持空框。
+- 统一后台九个功能页的卡片、表格、侧栏选中态、状态文字、操作菜单和空状态，减少重复标签、图标与视觉噪音。
+- 完善桌面端和手机端响应式布局，账号、邮箱和权限页面在窄屏下保持可读、可操作且无横向溢出。
+- 补充账号默认邮箱、管理员保护、共享容量、密码继承、Open API 兼容和权限编辑等回归测试。

.github/release-notes/v1.2.30.md

@@ -0,0 +1,9 @@
+- 修复邮箱侧栏切换目录后，紧凑列表顶部仍可能显示上一个目录名称的问题；收件箱、草稿箱、已发送、已归档、已删除、星标邮件、垃圾邮件、自定义文件夹和标签现在会与当前列表保持一致。
+- 切换邮箱目录时按当前视图重新生成列表区域，避免星标邮件等旧标题或旧操作状态残留到其他目录。
+- 修复“已删除”目录批量删除仍执行“移入已删除”的问题；现在会永久删除所选邮件，并在操作前显示不可恢复的二次确认。
+- 区分普通目录与“已删除”的删除语义：普通目录显示“移入已删除”，已删除目录显示“永久删除”。
+- 统一批量工具栏、邮件详情、右键菜单和列表快捷按钮的删除名称、确认文案与完成提示，避免显示“已移动”但实际执行删除等文字不一致。
+- 优化批量归档、移回收件箱、移入垃圾邮件和移入已删除后的提示，准确显示目标目录及处理数量。
+- 后台邮箱管理中将账号默认邮箱固定置顶，其余子邮箱继续按 A-Z / 0-9 排序，方便快速识别账号主邮箱。
+- 修正邮箱管理表头与账号行的网格结构，“权限管理”和“子邮箱”列标题及内容统一居中对齐。
+- 保留默认邮箱不可停用、不可删除保护；普通子邮箱继续支持启用、停用和二次确认删除。

.github/release-notes/v1.2.31.md

@@ -0,0 +1,7 @@
+- 邮件正文新增“自动翻译”开关并默认开启；打开邮件时仅在检测到正文语言与当前界面语言明显不同时自动翻译，避免中文邮件产生无意义请求。
+- 自动翻译开关会保存在当前浏览器中，关闭后继续显示原文，下次访问仍沿用用户选择。
+- 缓存同一封邮件、同一目标语言的翻译结果；返回列表后再次打开邮件可直接显示译文，减少重复等待和翻译请求。
+- 保留“显示原文”“显示译文”和“重新翻译”操作；重新翻译会主动刷新缓存中的译文。
+- 优化服务端翻译流程，纯文本正文与 HTML 正文改为并行处理，HTML 文本节点使用受控并发翻译，复杂排版邮件的翻译速度更快。
+- 翻译后的邮件继续保留原有 HTML 结构、图片和样式，并跳过代码、预格式文本、脚本及样式内容。
+- 增加 HTML 翻译测试和并发检测，确保排版结构不被破坏且没有数据竞争。

.github/release-notes/v1.2.32.md

@@ -0,0 +1,11 @@
+- 后台新增“备份与恢复”，可创建、校验、下载、删除完整加密备份；备份包含账号、邮件、附件、Maildir、DKIM、证书和部署配置。
+- 备份使用 AES-256-CBC、PBKDF2 和 SHA-256 校验；支持自行输入或生成 24 位恢复密码，并提供显示、复制和本地密码文件下载。
+- 新增 3、5、7、30 天及自定义周期的定时备份，可独立选择本地保留、Telegram 推送和 Google 云端硬盘。
+- Telegram 备份复用系统已绑定机器人，可沿用邮件通知接收方，也可自动查询多个群组并选择独立备份群组；邮件通知与备份推送互不干扰。
+- 新增 Google 云端硬盘 OAuth 配置、加密令牌保存、专用备份目录、手动上传和定时上传。
+- 安装脚本新增未安装状态管理菜单和“备份恢复”，自动扫描 `/root/` 下的多份备份并按时间排序，支持输入序号恢复。
+- 恢复流程增加压缩包路径、符号链接、特殊文件和 SQLite 完整性校验；失败时清理不完整安装并保留原始加密备份。
+- 优化备份页面的桌面与手机布局、状态对齐、配置弹窗和本地备份列表；修复未配置 Telegram 时本地备份被误报推送失败的问题。
+- 修复后台邮箱管理中失联归属账号可能产生重复列表标识的问题，并将同一归属账号的邮箱重新聚合显示。
+
+**完整更新日志**：[v1.2.31...v1.2.32](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.31...v1.2.32)

README.md

@@ -231,6 +231,8 @@ pnpm install
 pnpm run dev
 ```
 
+后端不在默认的 `http://localhost:8080` 时，可通过 `VITE_API_TARGET=http://localhost:18080 pnpm run dev` 指定本地代理目标。
+
 提交前建议运行：
 
 ```bash

README.zh-CN.md

@@ -48,6 +48,8 @@ bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/i
 
 ## 更新与回滚
 
+完整加密备份、Telegram 推送和新服务器恢复流程见 [备份与灾难恢复](docs/BACKUP_RESTORE.md)。
+
 ### 后台页面更新
 
 超级管理员可点击后台侧栏中的版本号，查看当前版本、最新版本与更新日志。点击“立即更新”后，系统会先在线备份 SQLite 数据库，再拉取新镜像并重启；页面会等待服务恢复后自动刷新。

VERSION

@@ -1 +1 @@
-1.2.15
+1.2.32

apps/api/internal/app/admin_handlers.go

@@ -49,9 +49,9 @@ func (a *App) handleAdminOverview(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
-	rows, err := a.db.QueryContext(r.Context(), `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
+	rows, err := a.db.QueryContext(r.Context(), `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.storage_quota_mb,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
 		FROM users u LEFT JOIN mailboxes mb ON mb.user_id=u.id
-		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at
+		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.storage_quota_mb,u.created_at
 		ORDER BY CASE WHEN u.role='admin' THEN 0 ELSE 1 END, lower(COALESCE(NULLIF(u.email,''),u.login_name)), lower(u.display_name), u.created_at`)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to list users")
@@ -64,7 +64,7 @@ func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
 		var disabled, twoFactorEnabled int
 		var mailboxLimitOverride sql.NullInt64
 		var created, mailboxCSV string
-		if err := rows.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created, &item.MailboxCount, &mailboxCSV); err != nil {
+		if err := rows.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &item.StorageQuotaMB, &created, &item.MailboxCount, &mailboxCSV); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan users")
 			return
 		}
@@ -101,6 +101,7 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		Password             string   `json:"password"`
 		Disabled             bool     `json:"disabled"`
 		MailboxLimitOverride *int     `json:"mailboxLimitOverride"`
+		StorageQuotaMB       int      `json:"storageQuotaMb"`
 		PermissionGroupIDs   []string `json:"permissionGroupIds"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
@@ -142,6 +143,14 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 	if role == "admin" {
 		mailboxLimitOverride = nil
 	}
+	storageQuotaMB := req.StorageQuotaMB
+	if storageQuotaMB > 0 && storageQuotaMB < minimumStorageQuotaMB {
+		badRequest(w, errors.New("共享存储容量不能小于 100 MB"))
+		return
+	}
+	if storageQuotaMB == 0 {
+		storageQuotaMB = defaultUserStorageQuotaMB
+	}
 	if !hasMinimumPasswordLength(req.Password) {
 		badRequest(w, errors.New("password must be at least 6 characters"))
 		return
@@ -159,11 +168,22 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	if _, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,mailbox_limit_override,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?,?)`, id, primaryEmail, primaryEmail, displayName, role, string(passwordHash), boolInt(req.Disabled), nullableInt(mailboxLimitOverride), now, now); err != nil {
+	if _, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,mailbox_limit_override,storage_quota_mb,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?)`, id, primaryEmail, primaryEmail, displayName, role, string(passwordHash), boolInt(req.Disabled), nullableInt(mailboxLimitOverride), storageQuotaMB, now, now); err != nil {
 		badRequest(w, err)
 		return
 	}
+	localPart, domainName, _ := strings.Cut(primaryEmail, "@")
+	var primaryDomainID string
+	if err := tx.QueryRowContext(r.Context(), `SELECT id FROM domains WHERE lower(name)=lower(?)`, domainName).Scan(&primaryDomainID); err == nil {
+		if _, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, id, primaryDomainID, localPart, displayName, string(passwordHash), storageQuotaMB, "active"); err != nil {
+			badRequest(w, err)
+			return
+		}
+	} else if !errors.Is(err, sql.ErrNoRows) {
+		respondError(w, http.StatusInternalServerError, "failed to load account domain")
+		return
+	}
 	permissionGroupIDs := req.PermissionGroupIDs
 	if role == "admin" {
 		permissionGroupIDs = nil
@@ -194,6 +214,7 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		Role                 string    `json:"role"`
 		Disabled             *bool     `json:"disabled"`
 		MailboxLimitOverride *int      `json:"mailboxLimitOverride"`
+		StorageQuotaMB       *int      `json:"storageQuotaMb"`
 		PermissionGroupIDs   *[]string `json:"permissionGroupIds"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
@@ -267,6 +288,18 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 	if role == "admin" {
 		mailboxLimitOverride = nil
 	}
+	var storageQuotaMB int
+	if err := a.db.QueryRowContext(r.Context(), `SELECT storage_quota_mb FROM users WHERE id=?`, id).Scan(&storageQuotaMB); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load storage quota")
+		return
+	}
+	if req.StorageQuotaMB != nil {
+		storageQuotaMB = *req.StorageQuotaMB
+	}
+	if storageQuotaMB < 100 {
+		badRequest(w, errors.New("共享存储容量不能小于 100 MB"))
+		return
+	}
 	if err := a.ensureAdminRemains(r.Context(), id, role, disabled); err != nil {
 		badRequest(w, err)
 		return
@@ -311,8 +344,8 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET login_name=?, email=?, display_name=?, role=?, disabled=?, mailbox_limit_override=?, updated_at=? WHERE id=?`,
-		loginName, primaryEmail, displayName, role, boolInt(disabled), nullableInt(mailboxLimitOverride), a.now().UTC().Format(time.RFC3339Nano), id); err != nil {
+	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET login_name=?, email=?, display_name=?, role=?, disabled=?, mailbox_limit_override=?, storage_quota_mb=?, updated_at=? WHERE id=?`,
+		loginName, primaryEmail, displayName, role, boolInt(disabled), nullableInt(mailboxLimitOverride), storageQuotaMB, a.now().UTC().Format(time.RFC3339Nano), id); err != nil {
 		if strings.Contains(strings.ToLower(err.Error()), "unique") {
 			badRequest(w, errors.New("主登录邮箱已被使用"))
 			return
@@ -409,11 +442,8 @@ func (a *App) handleDeleteUser(w http.ResponseWriter, r *http.Request) {
 	if target, err := a.userByID(r.Context(), id); err != nil {
 		respondError(w, http.StatusNotFound, "user not found")
 		return
-	} else if a.isDefaultAdminUser(target) {
-		badRequest(w, errors.New("default administrator cannot be deleted"))
-		return
-	} else if target.Role == "admin" && (current == nil || current.Role != "admin") {
-		respondError(w, http.StatusForbidden, "only administrators can delete administrator users")
+	} else if target.Role == "admin" {
+		badRequest(w, errors.New("administrator accounts cannot be deleted"))
 		return
 	}
 	if err := a.ensureAdminRemains(r.Context(), id, "user", true); err != nil {
@@ -553,6 +583,7 @@ func (a *App) handleListMailboxes(w http.ResponseWriter, r *http.Request) {
 		m.CreatedAt = parseTime(created)
 		items = append(items, m)
 	}
+	markPrimaryMailboxes(items)
 	respondJSON(w, http.StatusOK, map[string]any{"items": items})
 }
 
@@ -563,7 +594,6 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 		DisplayName    string `json:"displayName"`
 		Password       string `json:"password"`
 		QuotaMB        int    `json:"quotaMb"`
-		Role           string `json:"role"`
 		OwnerLoginName string `json:"ownerLoginName"`
 		OwnerEmail     string `json:"ownerEmail"`
 		UserID         string `json:"userId"`
@@ -580,20 +610,9 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, err)
 		return
 	}
-	if !hasMinimumPasswordLength(req.Password) {
-		badRequest(w, errors.New("password must be at least 6 characters"))
-		return
-	}
-	role := req.Role
-	if role == "" {
-		role = "user"
-	}
-	if role != "user" && role != "admin" {
-		badRequest(w, errors.New("invalid role"))
-		return
-	}
-	if role == "admin" {
-		respondError(w, http.StatusForbidden, "管理员只能由安装流程创建")
+	userID := strings.TrimSpace(req.UserID)
+	if req.QuotaMB < 0 {
+		badRequest(w, errors.New("quotaMb must be zero or greater"))
 		return
 	}
 
@@ -611,15 +630,14 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	now := a.now().UTC().Format(time.RFC3339Nano)
-	userID := strings.TrimSpace(req.UserID)
 	displayName := req.DisplayName
 	if displayName == "" {
 		displayName = address
 	}
+	var disabled, ownerStorageQuotaMB int
+	var passwordHash, ownerRole string
 	if userID != "" {
-		var disabled int
-		if err := tx.QueryRowContext(r.Context(), `SELECT disabled FROM users WHERE id=?`, userID).Scan(&disabled); err != nil {
+		if err := tx.QueryRowContext(r.Context(), `SELECT disabled,password_hash,role,storage_quota_mb FROM users WHERE id=?`, userID).Scan(&disabled, &passwordHash, &ownerRole, &ownerStorageQuotaMB); err != nil {
 			if errors.Is(err, sql.ErrNoRows) {
 				respondError(w, http.StatusNotFound, "owner user not found")
 			} else {
@@ -627,11 +645,11 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			}
 			return
 		}
-		if intBool(disabled) {
-			badRequest(w, errors.New("owner user is disabled"))
+	} else {
+		if !hasMinimumPasswordLength(req.Password) {
+			badRequest(w, errors.New("password must be at least 6 characters"))
 			return
 		}
-	} else {
 		ownerEmailInput := req.OwnerEmail
 		if strings.TrimSpace(ownerEmailInput) == "" && strings.Contains(strings.TrimSpace(req.OwnerLoginName), "@") {
 			ownerEmailInput = req.OwnerLoginName
@@ -641,21 +659,20 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			badRequest(w, err)
 			return
 		}
-		err = tx.QueryRowContext(r.Context(), `SELECT id FROM users WHERE email=? AND disabled=0`, ownerEmail).Scan(&userID)
+		err = tx.QueryRowContext(r.Context(), `SELECT id,disabled,password_hash,role,storage_quota_mb FROM users WHERE email=?`, ownerEmail).Scan(&userID, &disabled, &passwordHash, &ownerRole, &ownerStorageQuotaMB)
 		if errors.Is(err, sql.ErrNoRows) {
-			passwordHash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
-			if err != nil {
+			hash, hashErr := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+			if hashErr != nil {
 				respondError(w, http.StatusInternalServerError, "failed to hash password")
 				return
 			}
 			userID = newID("usr")
-			ownerDisplayName := displayName
-			if !strings.EqualFold(ownerEmail, address) {
-				ownerDisplayName = ownerEmail
-			}
-			_, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
-				VALUES(?,?,?,?,?,?,?,?,?)`, userID, ownerEmail, ownerEmail, ownerDisplayName, role, string(passwordHash), 0, now, now)
-			if err != nil {
+			passwordHash = string(hash)
+			ownerRole = "user"
+			ownerStorageQuotaMB = defaultUserStorageQuotaMB
+			now := a.now().UTC().Format(time.RFC3339Nano)
+			if _, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,storage_quota_mb,created_at,updated_at)
+				VALUES(?,?,?,?,?,?,?,?,?,?)`, userID, ownerEmail, ownerEmail, displayName, ownerRole, passwordHash, 0, ownerStorageQuotaMB, now, now); err != nil {
 				badRequest(w, err)
 				return
 			}
@@ -664,16 +681,26 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	}
-	if err := tx.Commit(); err != nil {
-		respondError(w, http.StatusInternalServerError, "failed to prepare owner user")
+	if intBool(disabled) {
+		badRequest(w, errors.New("owner user is disabled"))
 		return
 	}
-
-	mailboxID, err := a.createMailbox(r.Context(), userID, req.DomainID, local, displayName, req.Password, req.QuotaMB, "active")
+	quotaMB := req.QuotaMB
+	if quotaMB == 0 {
+		quotaMB = ownerStorageQuotaMB
+	}
+	if ownerRole == "admin" {
+		quotaMB = 0
+	}
+	mailboxID, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, req.DomainID, local, displayName, passwordHash, quotaMB, "active")
 	if err != nil {
 		badRequest(w, err)
 		return
 	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to create mailbox")
+		return
+	}
 	m, err := a.mailboxByID(r.Context(), mailboxID)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to load mailbox")
@@ -699,8 +726,9 @@ func (a *App) handleUpdateMailbox(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("displayName is required"))
 		return
 	}
-	if req.QuotaMB <= 0 {
-		req.QuotaMB = 1024
+	if req.QuotaMB < 0 {
+		badRequest(w, errors.New("quotaMb must be zero or greater"))
+		return
 	}
 	status := strings.TrimSpace(req.Status)
 	if status == "" {
@@ -710,13 +738,27 @@ func (a *App) handleUpdateMailbox(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("invalid status"))
 		return
 	}
+	existingMailbox, err := a.mailboxByID(r.Context(), id)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	if existingMailbox.Primary && status != existingMailbox.Status {
+		badRequest(w, errors.New("用户默认邮箱状态由所属账号管理，不能单独修改"))
+		return
+	}
 	userID := strings.TrimSpace(req.UserID)
 	if userID == "" {
 		badRequest(w, errors.New("userId is required"))
 		return
 	}
+	if existingMailbox.Primary && userID != existingMailbox.UserID {
+		badRequest(w, errors.New("用户默认邮箱归属由所属账号管理，不能单独修改"))
+		return
+	}
 	var disabled int
-	if err := a.db.QueryRowContext(r.Context(), `SELECT disabled FROM users WHERE id=?`, userID).Scan(&disabled); err != nil {
+	var ownerRole, ownerPasswordHash string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT disabled,role,password_hash FROM users WHERE id=?`, userID).Scan(&disabled, &ownerRole, &ownerPasswordHash); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			respondError(w, http.StatusNotFound, "owner user not found")
 		} else {
@@ -728,8 +770,11 @@ func (a *App) handleUpdateMailbox(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("owner user is disabled"))
 		return
 	}
-	res, err := a.db.ExecContext(r.Context(), `UPDATE mailboxes SET user_id=?,display_name=?,quota_mb=?,status=?,updated_at=? WHERE id=?`,
-		userID, displayName, req.QuotaMB, status, a.now().UTC().Format(time.RFC3339Nano), id)
+	if ownerRole == "admin" {
+		req.QuotaMB = 0
+	}
+	res, err := a.db.ExecContext(r.Context(), `UPDATE mailboxes SET user_id=?,display_name=?,password_hash=?,quota_mb=?,status=?,updated_at=? WHERE id=?`,
+		userID, displayName, ownerPasswordHash, req.QuotaMB, status, a.now().UTC().Format(time.RFC3339Nano), id)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to update mailbox")
 		return
@@ -749,6 +794,14 @@ func (a *App) handleUpdateMailbox(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
+	if err := a.ensureMailboxDeletable(r.Context(), id); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			respondError(w, http.StatusNotFound, "邮箱不存在或已被删除")
+		} else {
+			badRequest(w, err)
+		}
+		return
+	}
 	rows, err := a.db.QueryContext(r.Context(), `SELECT id FROM messages WHERE mailbox_id=?`, id)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "加载邮箱邮件失败")
@@ -1118,15 +1171,15 @@ func (a *App) domainByID(ctx context.Context, id string) (*Domain, error) {
 }
 
 func (a *App) adminUserByID(ctx context.Context, id string) (*AdminUser, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
+	row := a.db.QueryRowContext(ctx, `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.storage_quota_mb,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
 		FROM users u LEFT JOIN mailboxes mb ON mb.user_id=u.id
 		WHERE u.id=?
-		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at`, id)
+		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.storage_quota_mb,u.created_at`, id)
 	var item AdminUser
 	var disabled, twoFactorEnabled int
 	var mailboxLimitOverride sql.NullInt64
 	var created, mailboxCSV string
-	if err := row.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created, &item.MailboxCount, &mailboxCSV); err != nil {
+	if err := row.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &item.StorageQuotaMB, &created, &item.MailboxCount, &mailboxCSV); err != nil {
 		return nil, err
 	}
 	item.Disabled = intBool(disabled)
@@ -1191,9 +1244,48 @@ func (a *App) mailboxByID(ctx context.Context, id string) (*Mailbox, error) {
 		return nil, err
 	}
 	m.CreatedAt = parseTime(created)
+	if err := a.markMailboxPrimary(ctx, &m); err != nil {
+		return nil, err
+	}
 	return &m, nil
 }
 
+func markPrimaryMailboxes(items []Mailbox) {
+	primaryByUser := make(map[string]int)
+	for i := range items {
+		candidate, ok := primaryByUser[items[i].UserID]
+		if !ok || strings.EqualFold(items[i].Address, items[i].UserEmail) || (!strings.EqualFold(items[candidate].Address, items[candidate].UserEmail) && (items[i].CreatedAt.Before(items[candidate].CreatedAt) || (items[i].CreatedAt.Equal(items[candidate].CreatedAt) && items[i].ID < items[candidate].ID))) {
+			primaryByUser[items[i].UserID] = i
+		}
+	}
+	for _, index := range primaryByUser {
+		items[index].Primary = true
+	}
+}
+
+func (a *App) markMailboxPrimary(ctx context.Context, mailbox *Mailbox) error {
+	var primaryID string
+	err := a.db.QueryRowContext(ctx, `SELECT mb.id FROM mailboxes mb JOIN users u ON u.id=mb.user_id
+		WHERE mb.user_id=?
+		ORDER BY CASE WHEN lower(mb.address)=lower(u.email) THEN 0 ELSE 1 END, mb.created_at, mb.id LIMIT 1`, mailbox.UserID).Scan(&primaryID)
+	if err != nil {
+		return err
+	}
+	mailbox.Primary = mailbox.ID == primaryID
+	return nil
+}
+
+func (a *App) ensureMailboxDeletable(ctx context.Context, id string) error {
+	mailbox, err := a.mailboxByID(ctx, id)
+	if err != nil {
+		return err
+	}
+	if mailbox.Primary {
+		return errors.New("用户默认邮箱不能删除")
+	}
+	return nil
+}
+
 func (a *App) mailboxForUser(ctx context.Context, userID string) (*Mailbox, error) {
 	row := a.db.QueryRowContext(ctx, `SELECT id,user_id,domain_id,local_part,address,display_name,quota_mb,status,created_at FROM mailboxes WHERE user_id=? AND status='active' ORDER BY created_at LIMIT 1`, userID)
 	var m Mailbox

apps/api/internal/app/app.go

@@ -38,8 +38,16 @@ type App struct {
 	telegramPairMu     sync.Mutex
 	telegramPairs      map[string]telegramPairing
 	telegramDeliveryMu sync.Mutex
+	backupMu           sync.Mutex
+	backupJob          *backupJob
 }
 
+const (
+	defaultUserStorageQuotaMB  = 100
+	defaultAdminStorageQuotaMB = 1024
+	minimumStorageQuotaMB      = 100
+)
+
 func (a *App) config() Config {
 	a.cfgMu.RLock()
 	defer a.cfgMu.RUnlock()
@@ -97,6 +105,10 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 		db.Close()
 		return nil, err
 	}
+	if err := a.normalizeAdministratorMailboxQuotas(context.Background()); err != nil {
+		db.Close()
+		return nil, err
+	}
 	if err := a.initializeTelegramNotificationDefaults(context.Background()); err != nil {
 		db.Close()
 		return nil, err
@@ -120,6 +132,7 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 	a.startWorker(func() { a.smtpEventsCleanupWorker(workerCtx) })
 	a.startWorker(func() { a.statusWebhookWorker(workerCtx) })
 	a.startWorker(func() { a.telegramMailWorker(workerCtx) })
+	a.startWorker(func() { a.backupScheduleWorker(workerCtx) })
 	return a, nil
 }
 
@@ -168,6 +181,7 @@ func (a *App) migrate(ctx context.Context) error {
 			two_factor_secret TEXT NOT NULL DEFAULT '',
 			two_factor_enabled INTEGER NOT NULL DEFAULT 0,
 			mailbox_limit_override INTEGER,
+			storage_quota_mb INTEGER NOT NULL DEFAULT 100,
 			disabled INTEGER NOT NULL DEFAULT 0,
 			created_at TEXT NOT NULL,
 			updated_at TEXT NOT NULL
@@ -317,6 +331,7 @@ func (a *App) migrate(ctx context.Context) error {
 			mailbox_id TEXT NOT NULL REFERENCES mailboxes(id) ON DELETE CASCADE,
 			name TEXT NOT NULL,
 			role TEXT NOT NULL,
+			icon TEXT NOT NULL DEFAULT 'folder',
 			sort_order INTEGER NOT NULL DEFAULT 0,
 			uid_validity INTEGER NOT NULL DEFAULT 0,
 			uid_next INTEGER NOT NULL DEFAULT 1,
@@ -672,6 +687,9 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateUserMailboxLimitOverride(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateUserStorageQuota(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateMailRulesBuilder(ctx); err != nil {
 		return err
 	}
@@ -690,6 +708,9 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateFolderSortOrder(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateFolderIcons(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateExternalIMAP(ctx); err != nil {
 		return err
 	}
@@ -1331,6 +1352,39 @@ func (a *App) migrateUserMailboxLimitOverride(ctx context.Context) error {
 	return err
 }
 
+func (a *App) migrateUserStorageQuota(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(users)`)
+	if err != nil {
+		return err
+	}
+	hasColumn := false
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			rows.Close()
+			return err
+		}
+		if name == "storage_quota_mb" {
+			hasColumn = true
+		}
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	if hasColumn {
+		return nil
+	}
+	if _, err := a.db.ExecContext(ctx, `ALTER TABLE users ADD COLUMN storage_quota_mb INTEGER NOT NULL DEFAULT 100`); err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE users SET storage_quota_mb=? WHERE role='admin'`, defaultAdminStorageQuotaMB)
+	return err
+}
+
 func (a *App) migrateMessagesForUnregistered(ctx context.Context) error {
 	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(messages)`)
 	if err != nil {
@@ -1509,8 +1563,8 @@ func (a *App) seed(ctx context.Context) error {
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	userID := newID("usr")
-	if _, err := a.db.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?)`, userID, adminEmail, adminEmail, "NewSzxcn Admin", "admin", string(passwordHash), 0, now, now); err != nil {
+	if _, err := a.db.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,storage_quota_mb,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?)`, userID, adminEmail, adminEmail, "NewSzxcn Admin", "admin", string(passwordHash), 0, defaultAdminStorageQuotaMB, now, now); err != nil {
 		return err
 	}
 	a.log.Warn("created default administrator; change LANQIN_ADMIN_PASSWORD in production", "email", adminEmail)
@@ -1531,7 +1585,7 @@ func (a *App) seed(ctx context.Context) error {
 	}
 
 	// Create mailbox for admin
-	mailboxID, err := a.createMailboxWithPasswordHash(ctx, userID, domainID, localPart, adminEmail, string(passwordHash), 1024, "active")
+	mailboxID, err := a.createMailboxWithPasswordHash(ctx, userID, domainID, localPart, adminEmail, string(passwordHash), 0, "active")
 	if err != nil {
 		return err
 	}
@@ -1652,7 +1706,7 @@ func (a *App) migrateConfiguredAdministratorIdentity(ctx context.Context) error
 		if !errors.Is(err, sql.ErrNoRows) {
 			return err
 		}
-		mailboxID, err = a.createMailboxWithPasswordHashTx(ctx, tx, keeper.ID, domainID, localPart, adminEmail, keeper.PasswordHash, 1024, "active")
+		mailboxID, err = a.createMailboxWithPasswordHashTx(ctx, tx, keeper.ID, domainID, localPart, adminEmail, keeper.PasswordHash, 0, "active")
 		if err != nil {
 			return err
 		}
@@ -1867,8 +1921,15 @@ func (a *App) createMailboxWithPasswordHashTx(ctx context.Context, tx *sql.Tx, u
 	if localPart == "" {
 		return "", errors.New("invalid local part")
 	}
-	if quotaMB <= 0 {
-		quotaMB = 1024
+	if quotaMB < 0 {
+		return "", errors.New("quotaMb must be zero or greater")
+	}
+	var ownerRole string
+	if err := tx.QueryRowContext(ctx, `SELECT role FROM users WHERE id=?`, userID).Scan(&ownerRole); err != nil {
+		return "", err
+	}
+	if ownerRole == "admin" {
+		quotaMB = 0
 	}
 	if status == "" {
 		status = "active"
@@ -1901,6 +1962,17 @@ func (a *App) createMailboxWithPasswordHashTx(ctx context.Context, tx *sql.Tx, u
 	return id, nil
 }
 
+func (a *App) normalizeAdministratorMailboxQuotas(ctx context.Context) error {
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	if _, err := a.db.ExecContext(ctx, `UPDATE users SET storage_quota_mb=CASE WHEN role='admin' THEN ? ELSE ? END, updated_at=? WHERE storage_quota_mb<?`, defaultAdminStorageQuotaMB, defaultUserStorageQuotaMB, now, minimumStorageQuotaMB); err != nil {
+		return err
+	}
+	_, err := a.db.ExecContext(ctx, `UPDATE mailboxes
+		SET quota_mb=0, updated_at=?
+		WHERE quota_mb<>0 AND user_id IN (SELECT id FROM users WHERE role='admin')`, now)
+	return err
+}
+
 func (a *App) seedWelcomeMessage(ctx context.Context, mailboxID string) error {
 	cfg := a.config()
 	folderID, err := a.ensureFolder(ctx, mailboxID, "Inbox")

apps/api/internal/app/app_test.go

@@ -363,6 +363,147 @@ func createTestMailbox(t *testing.T, admin *testClient, domainID, localPart, dis
 	return mailbox
 }
 
+func TestAdminMailboxCreationUsesOwnerPasswordAndQuota(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("login code=%d body=%v", code, login)
+	}
+	adminUser, adminMailbox := defaultAdminUserAndMailbox(t, a)
+	adminDetails, err := a.adminUserByID(context.Background(), adminUser.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if adminDetails.StorageQuotaMB != defaultAdminStorageQuotaMB {
+		t.Fatalf("administrator storage quota=%d, want %d", adminDetails.StorageQuotaMB, defaultAdminStorageQuotaMB)
+	}
+	domainID := mustDefaultDomainID(t, a)
+
+	var secondary Mailbox
+	if code := admin.do("POST", "/api/admin/mailboxes", map[string]any{
+		"domainId":  domainID,
+		"localPart": "admin-secondary",
+		"userId":    adminUser.ID,
+	}, &secondary); code != http.StatusCreated {
+		t.Fatalf("create admin secondary mailbox code=%d", code)
+	}
+	if secondary.QuotaMB != 0 {
+		t.Fatalf("admin secondary quota=%d, want unlimited", secondary.QuotaMB)
+	}
+
+	var primaryHash, secondaryHash string
+	if err := a.db.QueryRow(`SELECT password_hash FROM mailboxes WHERE id=?`, adminMailbox.ID).Scan(&primaryHash); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.db.QueryRow(`SELECT password_hash FROM mailboxes WHERE id=?`, secondary.ID).Scan(&secondaryHash); err != nil {
+		t.Fatal(err)
+	}
+	if primaryHash != secondaryHash {
+		t.Fatal("admin secondary mailbox did not inherit the owner password")
+	}
+
+	var regular AdminUser
+	if code := admin.do("POST", "/api/admin/users", map[string]any{
+		"email":       "owner@lanqin.local",
+		"displayName": "Owner",
+		"password":    "OwnerPassword123!",
+		"role":        "user",
+	}, &regular); code != http.StatusCreated {
+		t.Fatalf("create regular owner code=%d", code)
+	}
+	if regular.MailboxCount != 1 {
+		t.Fatalf("new account mailbox count=%d, want one protected primary mailbox", regular.MailboxCount)
+	}
+	if regular.StorageQuotaMB != defaultUserStorageQuotaMB {
+		t.Fatalf("regular account storage quota=%d, want %d", regular.StorageQuotaMB, defaultUserStorageQuotaMB)
+	}
+	if _, err := a.mailboxByAddress(context.Background(), regular.Email); err != nil {
+		t.Fatalf("new account primary mailbox missing: %v", err)
+	}
+	var primaryStatusErr map[string]any
+	primaryMailbox, err := a.mailboxByAddress(context.Background(), regular.Email)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if code := admin.do("POST", "/api/admin/mailboxes/"+primaryMailbox.ID, map[string]any{
+		"userId": regular.ID, "displayName": primaryMailbox.DisplayName, "quotaMb": primaryMailbox.QuotaMB, "status": "disabled",
+	}, &primaryStatusErr); code != http.StatusBadRequest {
+		t.Fatalf("primary mailbox status update code=%d body=%v", code, primaryStatusErr)
+	}
+	var regularMailbox Mailbox
+	if code := admin.do("POST", "/api/admin/mailboxes", map[string]any{
+		"domainId":  domainID,
+		"localPart": "owner-secondary",
+		"userId":    regular.ID,
+	}, &regularMailbox); code != http.StatusCreated {
+		t.Fatalf("create regular secondary mailbox code=%d", code)
+	}
+	if regularMailbox.QuotaMB != defaultUserStorageQuotaMB {
+		t.Fatalf("regular secondary quota=%d, want %d", regularMailbox.QuotaMB, defaultUserStorageQuotaMB)
+	}
+	var userHash, mailboxHash string
+	if err := a.db.QueryRow(`SELECT password_hash FROM users WHERE id=?`, regular.ID).Scan(&userHash); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.db.QueryRow(`SELECT password_hash FROM mailboxes WHERE id=?`, regularMailbox.ID).Scan(&mailboxHash); err != nil {
+		t.Fatal(err)
+	}
+	if userHash != mailboxHash {
+		t.Fatal("regular secondary mailbox did not inherit the owner password")
+	}
+}
+
+func TestAdministratorAccountAndPrimaryMailboxesCannotBeDeleted(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("login code=%d body=%v", code, login)
+	}
+	adminUser, adminMailbox := defaultAdminUserAndMailbox(t, a)
+	var errBody map[string]any
+	if code := admin.do("DELETE", "/api/admin/users/"+adminUser.ID, nil, &errBody); code != http.StatusBadRequest {
+		t.Fatalf("administrator account delete code=%d body=%v", code, errBody)
+	}
+	if code := admin.do("DELETE", "/api/admin/mailboxes/"+adminMailbox.ID, nil, &errBody); code != http.StatusBadRequest {
+		t.Fatalf("administrator primary mailbox delete code=%d body=%v", code, errBody)
+	}
+	if code := admin.do("POST", "/api/admin/users/"+adminUser.ID, map[string]any{
+		"email": adminUser.Email, "displayName": adminUser.DisplayName, "role": "admin", "disabled": false, "storageQuotaMb": 99,
+	}, &errBody); code != http.StatusBadRequest {
+		t.Fatalf("storage quota below 100 MB code=%d body=%v", code, errBody)
+	}
+	var updatedAdmin AdminUser
+	if code := admin.do("POST", "/api/admin/users/"+adminUser.ID, map[string]any{
+		"email": adminUser.Email, "displayName": adminUser.DisplayName, "role": "admin", "disabled": false, "storageQuotaMb": 100,
+	}, &updatedAdmin); code != http.StatusOK || updatedAdmin.StorageQuotaMB != 100 {
+		t.Fatalf("administrator storage quota code=%d user=%+v", code, updatedAdmin)
+	}
+
+	var regular AdminUser
+	if code := admin.do("POST", "/api/admin/users", map[string]any{
+		"email": "protected-primary@lanqin.local", "displayName": "Protected Primary", "role": "user", "password": "Password123!",
+	}, &regular); code != http.StatusCreated {
+		t.Fatalf("create regular user code=%d user=%+v", code, regular)
+	}
+	primary, err := a.mailboxByAddress(context.Background(), regular.Email)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if code := admin.do("DELETE", "/api/admin/mailboxes/"+primary.ID, nil, &errBody); code != http.StatusBadRequest {
+		t.Fatalf("regular primary mailbox delete code=%d body=%v", code, errBody)
+	}
+	secondary := createTestMailbox(t, admin, primary.DomainID, "deletable-secondary", "Secondary", "", map[string]any{"userId": regular.ID})
+	if code := admin.do("DELETE", "/api/admin/mailboxes/"+secondary.ID, nil, &errBody); code != http.StatusOK {
+		t.Fatalf("secondary mailbox delete code=%d body=%v", code, errBody)
+	}
+}
+
 func createTestAPIToken(t *testing.T, client *testClient, name string) string {
 	return createTestAPITokenWithScopes(t, client, name, nil)
 }
@@ -1050,6 +1191,191 @@ func TestMailRulesForwardingAction(t *testing.T) {
 	}
 }
 
+func TestMailRulesExactSenderCustomFolderAndStopProcessing(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("admin login code=%d", code)
+	}
+	domainID := mustDefaultDomainID(t, a)
+	sender := createTestMailbox(t, admin, domainID, "rule-exact-sender", "Sender With Name", "Password123!", nil)
+	recipient := createTestMailbox(t, admin, domainID, "rule-custom-target", "Rule Target", "Password123!", nil)
+
+	rcpt := &testClient{t: t, server: ts}
+	if code := rcpt.do("POST", "/api/auth/login", map[string]string{"email": recipient.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("recipient login=%d", code)
+	}
+	var bad map[string]any
+	if code := rcpt.do("POST", "/api/me/rules", map[string]any{
+		"mailboxId":  recipient.ID,
+		"conditions": []map[string]string{{"field": "size", "operator": "contains", "value": "10"}},
+		"actions":    []map[string]string{{"type": "archive"}},
+	}, &bad); code != http.StatusBadRequest {
+		t.Fatalf("invalid field operator should be rejected code=%d body=%v", code, bad)
+	}
+
+	createRule := func(name string, action map[string]string, stop bool) {
+		t.Helper()
+		var rule MailRule
+		if code := rcpt.do("POST", "/api/me/rules", map[string]any{
+			"mailboxId":      recipient.ID,
+			"name":           name,
+			"conditions":     []map[string]string{{"field": "from", "operator": "equals", "value": sender.Address}},
+			"actions":        []map[string]string{action},
+			"stopProcessing": stop,
+		}, &rule); code != http.StatusCreated {
+			t.Fatalf("create rule %s code=%d rule=%+v", name, code, rule)
+		}
+	}
+	createRule("fallback archive", map[string]string{"type": "archive"}, false)
+	createRule("Netflix folder", map[string]string{"type": "move", "value": "Netflix 验证码"}, true)
+
+	senderClient := &testClient{t: t, server: ts}
+	if code := senderClient.do("POST", "/api/auth/login", map[string]string{"email": sender.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("sender login=%d", code)
+	}
+	var sent MailMessage
+	if code := senderClient.do("POST", "/api/mail/send", map[string]any{"to": []string{recipient.Address}, "subject": "Netflix code", "text": "123456"}, &sent); code != http.StatusCreated {
+		t.Fatalf("send code=%d sent=%+v", code, sent)
+	}
+	var custom struct {
+		Items []MailMessage `json:"items"`
+	}
+	if code := rcpt.do("GET", "/api/mail/messages?mailboxId="+recipient.ID+"&folder="+url.QueryEscape("Netflix 验证码"), nil, &custom); code != http.StatusOK || len(custom.Items) != 1 {
+		t.Fatalf("custom rule folder code=%d items=%+v", code, custom.Items)
+	}
+	var archived struct {
+		Items []MailMessage `json:"items"`
+	}
+	if code := rcpt.do("GET", "/api/mail/messages?mailboxId="+recipient.ID+"&folder=Archive", nil, &archived); code != http.StatusOK || len(archived.Items) != 0 {
+		t.Fatalf("stop processing should prevent fallback archive code=%d items=%+v", code, archived.Items)
+	}
+	var icon string
+	if err := a.db.QueryRow(`SELECT icon FROM folders WHERE mailbox_id=? AND name=?`, recipient.ID, "Netflix 验证码").Scan(&icon); err != nil || icon != "netflix" {
+		t.Fatalf("rule-created folder icon=%q err=%v", icon, err)
+	}
+}
+
+func TestFolderIconForName(t *testing.T) {
+	tests := []struct {
+		name      string
+		requested string
+		want      string
+	}{
+		{name: "Netflix 验证码", requested: "auto", want: "netflix"},
+		{name: "ChatGPT 通知", want: "chatgpt"},
+		{name: "OpenAI 账单", want: "chatgpt"},
+		{name: "项目归档", want: "briefcase"},
+		{name: "其他", want: "folder"},
+		{name: "Netflix", requested: "heart", want: "heart"},
+		{name: "Netflix", requested: "unknown", want: "folder"},
+		{name: "Custom", requested: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=", want: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII="},
+		{name: "Egypt archive", want: "folder"},
+		{name: "Custom", requested: "data:image/svg+xml;base64,PHN2Zz4=", want: "folder"},
+		{name: "Custom", requested: "data:image/png;base64,SGVsbG8=", want: "folder"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name+"/"+tt.requested, func(t *testing.T) {
+			if got := folderIconForName(tt.name, tt.requested); got != tt.want {
+				t.Fatalf("folderIconForName(%q, %q)=%q want %q", tt.name, tt.requested, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRuleFolderAutoIconPreservesManualSelection(t *testing.T) {
+	a := newTestApp(t)
+	ctx := context.Background()
+	admin := &testClient{t: t, server: httptest.NewServer(a.Router())}
+	defer admin.server.Close()
+
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("admin login code=%d", code)
+	}
+	domainID := createTestDomain(t, admin, "manual-icon.test")
+	mailbox := createTestMailbox(t, admin, domainID.ID, "rules", "Rules", "Password123!", nil)
+	if _, err := a.ensureCustomFolder(ctx, mailbox.ID, "Netflix", "heart"); err != nil {
+		t.Fatalf("create custom folder: %v", err)
+	}
+	if _, err := a.ensureCustomFolder(ctx, mailbox.ID, "Netflix", "auto"); err != nil {
+		t.Fatalf("reuse custom folder: %v", err)
+	}
+	var icon string
+	if err := a.db.QueryRowContext(ctx, `SELECT icon FROM folders WHERE mailbox_id=? AND name='Netflix'`, mailbox.ID).Scan(&icon); err != nil || icon != "heart" {
+		t.Fatalf("manual icon should be preserved icon=%q err=%v", icon, err)
+	}
+}
+
+func TestMailRuleApplyExistingWhenDisabledExcludesSent(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("admin login code=%d", code)
+	}
+	domainID := mustDefaultDomainID(t, a)
+	sender := createTestMailbox(t, admin, domainID, "rule-existing-sender", "Existing Sender", "Password123!", nil)
+	recipient := createTestMailbox(t, admin, domainID, "rule-existing-recipient", "Existing Recipient", "Password123!", nil)
+	subject := "same inbound and sent subject"
+
+	senderClient := &testClient{t: t, server: ts}
+	if code := senderClient.do("POST", "/api/auth/login", map[string]string{"email": sender.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("sender login=%d", code)
+	}
+	var incomingSend MailMessage
+	if code := senderClient.do("POST", "/api/mail/send", map[string]any{"to": []string{recipient.Address}, "subject": subject, "text": "incoming"}, &incomingSend); code != http.StatusCreated {
+		t.Fatalf("incoming send code=%d", code)
+	}
+
+	rcpt := &testClient{t: t, server: ts}
+	if code := rcpt.do("POST", "/api/auth/login", map[string]string{"email": recipient.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("recipient login=%d", code)
+	}
+	var outgoing MailMessage
+	if code := rcpt.do("POST", "/api/mail/send", map[string]any{"to": []string{sender.Address}, "subject": subject, "text": "outgoing"}, &outgoing); code != http.StatusCreated {
+		t.Fatalf("outgoing send code=%d", code)
+	}
+	var rule MailRule
+	if code := rcpt.do("POST", "/api/me/rules", map[string]any{
+		"mailboxId":       recipient.ID,
+		"name":            "existing disabled",
+		"conditions":      []map[string]string{{"field": "subject", "operator": "equals", "value": subject}},
+		"actions":         []map[string]string{{"type": "star"}},
+		"applyToExisting": true,
+		"enabled":         false,
+	}, &rule); code != http.StatusCreated || rule.AppliedExistingCount != 1 || rule.Enabled {
+		t.Fatalf("create disabled existing rule code=%d rule=%+v", code, rule)
+	}
+	var inboundStarred, sentStarred int
+	if err := a.db.QueryRow(`SELECT is_starred FROM messages WHERE mailbox_id=? AND subject=? AND folder_id IN (SELECT id FROM folders WHERE mailbox_id=? AND lower(name)='inbox')`, recipient.ID, subject, recipient.ID).Scan(&inboundStarred); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.db.QueryRow(`SELECT is_starred FROM messages WHERE id=?`, outgoing.ID).Scan(&sentStarred); err != nil {
+		t.Fatal(err)
+	}
+	if inboundStarred != 1 || sentStarred != 0 {
+		t.Fatalf("existing rule starred inbound=%d sent=%d", inboundStarred, sentStarred)
+	}
+}
+
+func TestRuleAttachmentConditionUsesFilenameOnly(t *testing.T) {
+	msg := ruleMessage{AttachmentNames: "notes.txt"}
+	if ruleConditionMatches(MailRuleCondition{Field: "attachment", Operator: "contains", Value: "pdf"}, msg) {
+		t.Fatal("attachment condition must not match MIME type or unrelated extension")
+	}
+	if !ruleConditionMatches(MailRuleCondition{Field: "attachment", Operator: "ends-with", Value: ".txt"}, msg) {
+		t.Fatal("attachment condition should match filename")
+	}
+}
+
 func TestMailRulesMailboxIsolation(t *testing.T) {
 	a := newTestApp(t)
 	ts := httptest.NewServer(a.Router())
@@ -1389,6 +1715,13 @@ func TestOpenRegistrationAtomicallyCreatesLoginUserAndMailbox(t *testing.T) {
 	if code := client.do("POST", "/api/auth/register", registration, &registered); code != http.StatusCreated || registered.User.Email != "newuser@lanqin.local" || registered.User.Role != "user" {
 		t.Fatalf("register code=%d user=%+v", code, registered.User)
 	}
+	var storageQuotaMB int
+	if err := a.db.QueryRow(`SELECT storage_quota_mb FROM users WHERE id=?`, registered.User.ID).Scan(&storageQuotaMB); err != nil {
+		t.Fatal(err)
+	}
+	if storageQuotaMB != defaultUserStorageQuotaMB {
+		t.Fatalf("registered account storage quota=%d, want %d", storageQuotaMB, defaultUserStorageQuotaMB)
+	}
 	var me struct {
 		User User `json:"user"`
 	}
@@ -2293,7 +2626,7 @@ func TestCustomMailFoldersCreateAndMove(t *testing.T) {
 	}
 
 	var custom MailFolder
-	if code := admin.do("POST", "/api/mail/folders", map[string]string{"name": "客户归档"}, &custom); code != http.StatusCreated || custom.Name != "客户归档" || custom.Role != "客户归档" {
+	if code := admin.do("POST", "/api/mail/folders", map[string]string{"name": "客户归档", "icon": "netflix"}, &custom); code != http.StatusCreated || custom.Name != "客户归档" || custom.Role != "客户归档" || custom.Icon != "netflix" {
 		t.Fatalf("custom folder create code=%d folder=%+v", code, custom)
 	}
 	var folders struct {
@@ -2302,6 +2635,15 @@ func TestCustomMailFoldersCreateAndMove(t *testing.T) {
 	if code := admin.do("GET", "/api/mail/folders", nil, &folders); code != http.StatusOK || !folderListContains(folders.Items, "客户归档") {
 		t.Fatalf("folder list code=%d items=%+v", code, folders.Items)
 	}
+	foundIcon := ""
+	for _, folder := range folders.Items {
+		if folder.Name == "客户归档" {
+			foundIcon = folder.Icon
+		}
+	}
+	if foundIcon != "netflix" {
+		t.Fatalf("folder icon=%q, want netflix", foundIcon)
+	}
 
 	var sent MailMessage
 	if code := admin.do("POST", "/api/mail/send", map[string]any{"to": []string{"person@example.test"}, "subject": "custom folder", "text": "body"}, &sent); code != http.StatusCreated {
@@ -2613,6 +2955,25 @@ func TestMailSendQueuesSMTPFailureForRetry(t *testing.T) {
 	}
 }
 
+func TestForwardingVerificationPageDoesNotLinkToMailbox(t *testing.T) {
+	a := newTestApp(t)
+	recorder := httptest.NewRecorder()
+
+	a.renderForwardingVerificationPage(recorder, http.StatusOK, true, "friend@example.test", "该邮箱已通过转发验证")
+	body := recorder.Body.String()
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("status=%d", recorder.Code)
+	}
+	for _, forbidden := range []string{`href="/"`, "返回邮箱", "登录"} {
+		if strings.Contains(body, forbidden) {
+			t.Fatalf("verification page contains forbidden navigation %q: %s", forbidden, body)
+		}
+	}
+	if !strings.Contains(body, "可以关闭此页面") {
+		t.Fatalf("verification page is missing close guidance: %s", body)
+	}
+}
+
 func TestInboundForwardingSettingsAndDelivery(t *testing.T) {
 	a := newTestApp(t)
 	stopTestWorkers(a)
@@ -2964,20 +3325,45 @@ func TestOpenAPIDomainAndMailboxCRUD(t *testing.T) {
 	if code := openAdmin.do("POST", "/api/open/domains/"+domain.ID, map[string]string{"status": "active"}, &domain); code != http.StatusOK {
 		t.Fatalf("reactivate open api domain code=%d domain=%+v", code, domain)
 	}
+	var owner AdminUser
+	if code := admin.do("POST", "/api/admin/users", map[string]any{
+		"email": "open-api-owner@lanqin.local", "displayName": "Open API Owner", "role": "user", "password": "Password123!",
+	}, &owner); code != http.StatusCreated {
+		t.Fatalf("create open api mailbox owner code=%d owner=%+v", code, owner)
+	}
 
 	var mailbox Mailbox
 	if code := openAdmin.do("POST", "/api/open/mailboxes", map[string]any{
 		"domainId":    domain.ID,
 		"localPart":   "api-user",
 		"displayName": "API User",
-		"password":    "Password123!",
+		"password":    "DifferentPassword123!",
 		"quotaMb":     256,
+		"userId":      owner.ID,
 	}, &mailbox); code != http.StatusCreated {
 		t.Fatalf("create open api mailbox code=%d mailbox=%+v", code, mailbox)
 	}
+	ownerPrimary, err := a.mailboxByAddress(context.Background(), owner.Email)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var protectedMailboxErr map[string]any
+	if code := openAdmin.do("POST", "/api/open/mailboxes/"+ownerPrimary.ID, map[string]any{"status": "disabled"}, &protectedMailboxErr); code != http.StatusBadRequest {
+		t.Fatalf("open api primary mailbox status update code=%d body=%v", code, protectedMailboxErr)
+	}
 	if mailbox.Address != "api-user@api.example.test" || mailbox.QuotaMB != 256 {
 		t.Fatalf("mailbox=%+v", mailbox)
 	}
+	var ownerPasswordHash, mailboxPasswordHash string
+	if err := a.db.QueryRowContext(context.Background(), `SELECT password_hash FROM users WHERE id=?`, owner.ID).Scan(&ownerPasswordHash); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.db.QueryRowContext(context.Background(), `SELECT password_hash FROM mailboxes WHERE id=?`, mailbox.ID).Scan(&mailboxPasswordHash); err != nil {
+		t.Fatal(err)
+	}
+	if mailboxPasswordHash != ownerPasswordHash {
+		t.Fatal("open api mailbox did not inherit the owner password")
+	}
 	var mailboxes struct {
 		Items []Mailbox `json:"items"`
 	}
@@ -2994,6 +3380,9 @@ func TestOpenAPIDomainAndMailboxCRUD(t *testing.T) {
 	if updated.DisplayName != "Renamed API User" || updated.QuotaMB != 512 || updated.Status != "disabled" {
 		t.Fatalf("updated mailbox=%+v", updated)
 	}
+	if code := openAdmin.do("POST", "/api/open/mailboxes/"+mailbox.ID, map[string]any{"status": "active"}, &updated); code != http.StatusOK || updated.QuotaMB != 512 {
+		t.Fatalf("open api mailbox omitted quota should preserve 512 MB: code=%d mailbox=%+v", code, updated)
+	}
 	var ok map[string]any
 	if code := openAdmin.do("DELETE", "/api/open/mailboxes/"+mailbox.ID, nil, &ok); code != http.StatusOK {
 		t.Fatalf("delete open api mailbox code=%d body=%v", code, ok)
@@ -4492,6 +4881,49 @@ func TestSubmissionTLSConfigReloadsCertificateFiles(t *testing.T) {
 	}
 }
 
+func TestSubmissionLoginAuthenticationWithAndWithoutInitialResponse(t *testing.T) {
+	a := newTestApp(t)
+	for _, withInitialResponse := range []bool{false, true} {
+		t.Run(fmt.Sprintf("initial-response-%t", withInitialResponse), func(t *testing.T) {
+			session := &submissionSession{app: a}
+			if mechanisms := strings.Join(session.AuthMechanisms(), " "); mechanisms != "PLAIN LOGIN" {
+				t.Fatalf("submission auth mechanisms=%q", mechanisms)
+			}
+			server, err := session.Auth(sasl.Login)
+			if err != nil {
+				t.Fatal(err)
+			}
+			var response []byte
+			if withInitialResponse {
+				response = []byte("admin@lanqin.local")
+			}
+			challenge, done, err := server.Next(response)
+			if err != nil || done {
+				t.Fatalf("initial LOGIN response err=%v done=%t", err, done)
+			}
+			if !withInitialResponse {
+				if string(challenge) != "Username:" {
+					t.Fatalf("username challenge=%q", challenge)
+				}
+				challenge, done, err = server.Next([]byte("admin@lanqin.local"))
+				if err != nil || done {
+					t.Fatalf("username response err=%v done=%t", err, done)
+				}
+			}
+			if string(challenge) != "Password:" {
+				t.Fatalf("password challenge=%q", challenge)
+			}
+			challenge, done, err = server.Next([]byte("ChangeMe123!"))
+			if err != nil || !done || challenge != nil {
+				t.Fatalf("password response challenge=%q err=%v done=%t", challenge, err, done)
+			}
+			if session.user == nil || session.mailbox == nil {
+				t.Fatal("LOGIN authentication did not populate submission session")
+			}
+		})
+	}
+}
+
 func TestSubmissionServersAcceptStartTLSAndImplicitTLS(t *testing.T) {
 	a := newTestApp(t)
 	host, port, received := startCapturingSMTP(t, 2)
@@ -4529,7 +4961,7 @@ func TestSubmissionServersAcceptStartTLSAndImplicitTLS(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if err := client.Auth(sasl.NewPlainClient("", "admin@lanqin.local", "ChangeMe123!")); err != nil {
+	if err := client.Auth(sasl.NewLoginClient("admin@lanqin.local", "ChangeMe123!")); err != nil {
 		t.Fatal(err)
 	}
 	if err := client.SendMail("admin@lanqin.local", []string{"person@example.com"}, strings.NewReader(raw)); err != nil {
@@ -4939,20 +5371,24 @@ func TestFixedRolesProtectAdminRoutesAndDefaultAdmin(t *testing.T) {
 	}, &errBody); code != http.StatusForbidden {
 		t.Fatalf("system permission group update should be forbidden code=%d body=%v", code, errBody)
 	}
-	var regularUpdateErr map[string]any
+	var updatedRegular PermissionGroup
 	if code := admin.do("POST", "/api/admin/permission-groups/"+PermissionGroupRegular, map[string]any{
 		"name":        "Changed Regular",
 		"description": "Should not change",
-		"permissions": []string{PermissionAdminOverview},
-	}, &regularUpdateErr); code != http.StatusForbidden {
-		t.Fatalf("regular system permission group update should be forbidden code=%d body=%v", code, regularUpdateErr)
+		"permissions": regularUserDefaultPermissions(),
+		"limits":      defaultPermissionLimits(),
+	}, &updatedRegular); code != http.StatusOK {
+		t.Fatalf("regular system permission group update code=%d group=%+v", code, updatedRegular)
+	}
+	if updatedRegular.Name != "普通用户" || updatedRegular.Description != "仅可使用自己的邮箱功能，不包含后台权限。" {
+		t.Fatalf("regular system permission group identity changed: %+v", updatedRegular)
 	}
 	regularGroup, err := a.permissionGroupByID(context.Background(), PermissionGroupRegular)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if !regularGroup.System || !userHasPermission(&User{Role: "user", Permissions: regularGroup.Permissions}, PermissionMailAccess) || userHasPermission(&User{Role: "user", Permissions: regularGroup.Permissions}, PermissionAdminOverview) {
-		t.Fatalf("regular group should stay locked with default permissions=%+v", regularGroup)
+		t.Fatalf("regular group should retain the saved default permissions=%+v", regularGroup)
 	}
 	if code := admin.do("DELETE", "/api/admin/permission-groups/"+PermissionGroupSuperAdmin, nil, &errBody); code != http.StatusForbidden {
 		t.Fatalf("system permission group delete should be forbidden code=%d body=%v", code, errBody)
@@ -6101,7 +6537,7 @@ func TestMailboxQuotaRejectsNewMessage(t *testing.T) {
 	ctx := context.Background()
 	user, mb := defaultAdminUserAndMailbox(t, a)
 	clearMailboxMessagesForTest(t, a, mb.ID)
-	if _, err := a.db.ExecContext(ctx, `UPDATE mailboxes SET quota_mb=1 WHERE id=?`, mb.ID); err != nil {
+	if _, err := a.db.ExecContext(ctx, `UPDATE users SET storage_quota_mb=1 WHERE id=?`, user.ID); err != nil {
 		t.Fatal(err)
 	}
 	_, err := a.sendMailNow(ctx, user, mb, mailComposeInput{
@@ -6177,7 +6613,11 @@ func TestMailStatsQuotaAndCleanupIsolation(t *testing.T) {
 	if code := alice.do("GET", "/api/me/stats?mailboxId="+aliceMB.ID+"&days=7", nil, &stats); code != http.StatusOK {
 		t.Fatalf("stats code=%d stats=%+v", code, stats)
 	}
-	if stats.QuotaBytes != int64(aliceMB.QuotaMB)*1024*1024 || stats.AttachmentBytes == 0 || stats.QuotaUsedPct <= 0 {
+	var aliceStorageQuotaMB int64
+	if err := a.db.QueryRowContext(ctx, `SELECT storage_quota_mb FROM users WHERE id=?`, aliceUser.ID).Scan(&aliceStorageQuotaMB); err != nil {
+		t.Fatal(err)
+	}
+	if stats.QuotaBytes != aliceStorageQuotaMB*1024*1024 || stats.AttachmentBytes == 0 || stats.QuotaUsedPct <= 0 {
 		t.Fatalf("stats quota/attachment not populated: %+v", stats)
 	}
 	if stats.TotalIncoming != 1 || stats.TotalOutgoing != 0 || stats.AverageMessageBytes <= 0 {

apps/api/internal/app/auth_handlers.go

@@ -177,8 +177,8 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	if _, err := tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", string(passwordHash), 0, now, now); err != nil {
+	if _, err := tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,storage_quota_mb,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", string(passwordHash), 0, defaultUserStorageQuotaMB, now, now); err != nil {
 		if strings.Contains(strings.ToLower(err.Error()), "unique") {
 			respondError(w, http.StatusConflict, "该邮箱已被注册")
 			return
@@ -186,7 +186,7 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "注册失败，请稍后重试")
 		return
 	}
-	if _, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, mailboxDomainID, mailboxLocalPart, displayName, string(passwordHash), 1024, "active"); err != nil {
+	if _, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, mailboxDomainID, mailboxLocalPart, displayName, string(passwordHash), defaultUserStorageQuotaMB, "active"); err != nil {
 		if strings.Contains(strings.ToLower(err.Error()), "unique") {
 			respondError(w, http.StatusConflict, "该邮箱已被注册")
 		} else {

apps/api/internal/app/backup_handlers_test.go

@@ -0,0 +1,173 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"mime"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestBackupEndpointsRejectMismatchedConfirmation(t *testing.T) {
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	server := httptest.NewServer(a.Router())
+	defer server.Close()
+	admin := &testClient{t: t, server: server}
+	var response map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &response); code != http.StatusOK {
+		t.Fatalf("login code=%d body=%v", code, response)
+	}
+	response = nil
+	if code := admin.do("POST", "/api/admin/backups", map[string]any{"password": "BackupPassword123!", "confirmPassword": "DifferentPassword123!"}, &response); code != http.StatusBadRequest {
+		t.Fatalf("manual backup mismatch code=%d body=%v", code, response)
+	}
+	response = nil
+	if code := admin.do("POST", "/api/admin/backups/settings", map[string]any{"enabled": false, "days": 7, "password": "BackupPassword123!", "confirmPassword": "DifferentPassword123!"}, &response); code != http.StatusBadRequest {
+		t.Fatalf("scheduled backup mismatch code=%d body=%v", code, response)
+	}
+}
+
+func TestDiscoverTelegramGroupsReturnsUniqueCandidates(t *testing.T) {
+	telegramServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = io.WriteString(w, `{"ok":true,"result":[`+
+			`{"update_id":1,"message":{"text":"/newszxcn ABC123","chat":{"id":-1001,"type":"supergroup","title":"主备份"}}},`+
+			`{"update_id":2,"message":{"text":"/newszxcn ABC123","chat":{"id":-1002,"type":"group","title":"异地备份"}}},`+
+			`{"update_id":3,"message":{"text":"/newszxcn ABC123","chat":{"id":-1001,"type":"supergroup","title":"主备份"}}},`+
+			`{"update_id":4,"message":{"text":"/newszxcn WRONG","chat":{"id":-1003,"type":"group","title":"无关群组"}}}]}`)
+	}))
+	defer telegramServer.Close()
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	a.telegramURL = telegramServer.URL
+	groups, err := a.discoverTelegramGroups(context.Background(), "test-token", "ABC123")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(groups) != 2 || groups[0].ChatID != "-1001" || groups[1].ChatID != "-1002" {
+		t.Fatalf("unexpected groups: %+v", groups)
+	}
+}
+
+func TestGoogleDriveUploadRequestUsesMultipartRelated(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "newszxcn-backup-test.tar.zst.enc")
+	if err := os.WriteFile(path, []byte("encrypted backup"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	req, err := newGoogleDriveUploadRequest(context.Background(), path, "folder-123")
+	if err != nil {
+		t.Fatal(err)
+	}
+	mediaType, params, err := mime.ParseMediaType(req.Header.Get("Content-Type"))
+	if err != nil || mediaType != "multipart/related" || params["boundary"] == "" {
+		t.Fatalf("content type = %q, %v", req.Header.Get("Content-Type"), err)
+	}
+	reader := multipart.NewReader(req.Body, params["boundary"])
+	metadataPart, err := reader.NextPart()
+	if err != nil {
+		t.Fatal(err)
+	}
+	var metadata struct {
+		Name    string   `json:"name"`
+		Parents []string `json:"parents"`
+	}
+	if err := json.NewDecoder(metadataPart).Decode(&metadata); err != nil {
+		t.Fatal(err)
+	}
+	if metadata.Name != filepath.Base(path) || len(metadata.Parents) != 1 || metadata.Parents[0] != "folder-123" {
+		t.Fatalf("metadata = %+v", metadata)
+	}
+	filePart, err := reader.NextPart()
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw, err := io.ReadAll(filePart)
+	if err != nil || string(raw) != "encrypted backup" {
+		t.Fatalf("uploaded bytes = %q, %v", raw, err)
+	}
+}
+
+func TestBackupEncryptionRequiresDeploymentSecret(t *testing.T) {
+	dir := t.TempDir()
+	a := newTestAppWithConfig(t, Config{
+		Addr: ":0", DBPath: filepath.Join(dir, "data", "lanqin.db"), DataDir: filepath.Join(dir, "data"),
+		CookieName: "lanqin_test", SessionTTLHours: 24, AdminEmail: "admin@example.com", AdminPassword: "ChangeMe123!", AllowInsecureHTTP: true,
+	})
+	if _, err := a.encryptBackupPassword("BackupPassword123!"); err == nil {
+		t.Fatal("backup password encryption succeeded without a deployment secret")
+	}
+}
+
+func TestBackupPasswordValidation(t *testing.T) {
+	for _, valid := range []string{"12345678", "Restore Password 123!"} {
+		if !validBackupPassword(valid) {
+			t.Errorf("valid password rejected: %q", valid)
+		}
+	}
+	for _, invalid := range []string{"1234567", "password\nvalue", "password\x00value", strings.Repeat("x", 1025)} {
+		if validBackupPassword(invalid) {
+			t.Errorf("invalid password accepted: %q", invalid)
+		}
+	}
+}
+
+func TestBackupPasswordEncryptionAndTelegramReport(t *testing.T) {
+	dir := t.TempDir()
+	a := newTestAppWithConfig(t, Config{
+		Addr: ":0", AppVersion: "v1.2.31", DBPath: filepath.Join(dir, "data", "lanqin.db"), DataDir: filepath.Join(dir, "data"),
+		CookieName: "lanqin_test", SessionTTLHours: 24, AdminEmail: "admin@newszxcn.com", AdminPassword: "ChangeMe123!",
+		PublicHostname: "mail.newszxcn.com", PublicBaseURL: "https://mail.newszxcn.com", AllowInsecureHTTP: true, UpdateServiceToken: "test-update-secret",
+	})
+
+	ciphertext, err := a.encryptBackupPassword("BackupPassword123!")
+	if err != nil || ciphertext == "BackupPassword123!" {
+		t.Fatalf("password encryption failed: %q %v", ciphertext, err)
+	}
+	plain, err := a.decryptBackupPassword(ciphertext)
+	if err != nil || plain != "BackupPassword123!" {
+		t.Fatalf("password decryption = %q, %v", plain, err)
+	}
+	if !validTelegramPrivateChatID("-1001234567890") {
+		t.Fatal("private Telegram group chat ID was rejected")
+	}
+
+	now := a.now().UTC().Format("2006-01-02T15:04:05Z")
+	if _, err := a.db.Exec(`INSERT INTO domains(id,name,status,dkim_selector,dkim_public_key,dkim_private_key,dns_status,created_at,updated_at) VALUES('domain_xyes','xyes.me','active','mail','','','unchecked',?,?)`, now, now); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := a.db.Exec(`INSERT INTO users(id,login_name,email,display_name,role,password_hash,created_at,updated_at) VALUES('user_xyes','user@xyes.me','user@xyes.me','User','user','hash',?,?)`, now, now); err != nil {
+		t.Fatal(err)
+	}
+
+	path := filepath.Join(dir, "newszxcn-backup-20260811-120000-1.2.31.tar.zst.enc")
+	if err := os.WriteFile(path, []byte("encrypted backup"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	info, err := os.Stat(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	report, err := a.backupTelegramReport(context.Background(), path, info)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, expected := range []string{"备份成功", "mail.newszxcn.com", "已有域名", "newszxcn.com", "xyes.me", "管理员账号", "admin@newszxcn.com", "普通用户账号", "user@xyes.me", "请不要解压", "本地上传", "1Password"} {
+		if !strings.Contains(report, expected) {
+			t.Errorf("report missing %q: %s", expected, report)
+		}
+	}
+	if strings.Contains(report, "newszxcn.com（管理员）") {
+		t.Fatal("domain list incorrectly contains account role")
+	}
+	if strings.Contains(report, "BackupPassword123!") || strings.Contains(report, "ChangeMe123!") {
+		t.Fatal("report leaked a password")
+	}
+}

apps/api/internal/app/config.go

@@ -67,6 +67,8 @@ type Config struct {
 	ReleaseAPIURL                   string
 	UpdateServiceURL                string
 	UpdateServiceToken              string
+	BackupSourceDir                 string
+	BackupDir                       string
 }
 
 func LoadConfig() Config {
@@ -131,6 +133,8 @@ func LoadConfig() Config {
 		ReleaseAPIURL:                   getenv("LANQIN_RELEASE_API_URL", "https://api.github.com/repos/zxyszx/NewSzxcn-Email/releases/latest"),
 		UpdateServiceURL:                getenv("LANQIN_UPDATE_SERVICE_URL", ""),
 		UpdateServiceToken:              getenv("LANQIN_UPDATE_SERVICE_TOKEN", ""),
+		BackupSourceDir:                 getenv("LANQIN_BACKUP_SOURCE_DIR", ""),
+		BackupDir:                       getenv("LANQIN_BACKUP_DIR", filepath.Join(dataDir, "disaster-backups")),
 	}
 }
 

apps/api/internal/app/forwarding_handlers.go

@@ -165,7 +165,7 @@ func (a *App) handleVerifyForwardingEmail(w http.ResponseWriter, r *http.Request
 		a.renderForwardingVerificationPage(w, http.StatusInternalServerError, false, email, "验证失败，请稍后重试")
 		return
 	}
-	a.renderForwardingVerificationPage(w, http.StatusOK, true, email, "验证完成，可以回到设置页选择此转发目标")
+	a.renderForwardingVerificationPage(w, http.StatusOK, true, email, "该邮箱已通过转发验证")
 }
 
 func (a *App) handleDeleteForwardingVerifiedEmail(w http.ResponseWriter, r *http.Request) {
@@ -439,14 +439,18 @@ func (a *App) renderForwardingVerificationPage(w http.ResponseWriter, status int
 	title := "邮箱转发验证"
 	heading := "验证失败"
 	color := "#dc2626"
+	statusMark := "!"
+	closingMessage := "请联系验证发起人重新发送链接"
 	if ok {
 		heading = "验证完成"
-		color = "#2563eb"
+		color = "#16a34a"
+		statusMark = "✓"
+		closingMessage = "验证结果已记录，可以关闭此页面"
 	}
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	w.WriteHeader(status)
-	_, _ = fmt.Fprintf(w, `<!doctype html><html lang="zh-CN"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>%s</title></head><body style="margin:0;background:#f8fafc;color:#0f172a;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif"><main style="min-height:100vh;display:grid;place-items:center;padding:24px"><section style="width:min(100%%,520px);background:white;border:1px solid #e2e8f0;border-radius:14px;padding:34px 30px;box-shadow:0 18px 45px rgba(15,23,42,.08)"><h1 style="margin:0 0 14px;font-size:28px">%s</h1><p style="margin:0 0 10px;font-size:17px;color:#475569">%s</p><p style="margin:0 0 26px;font-size:15px;color:#64748b">%s</p><a href="/" style="display:inline-block;border-radius:8px;background:%s;color:white;text-decoration:none;padding:12px 18px;font-weight:700">返回邮箱</a></section></main></body></html>`,
-		title, heading, htmlEscape(message), htmlEscape(email), color)
+	_, _ = fmt.Fprintf(w, `<!doctype html><html lang="zh-CN"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>%s</title></head><body style="margin:0;background:#f8fafc;color:#0f172a;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif"><main style="min-height:100vh;display:grid;place-items:center;padding:24px"><section style="width:min(100%%,520px);background:white;border:1px solid #e2e8f0;border-radius:8px;padding:34px 30px;box-shadow:0 18px 45px rgba(15,23,42,.08)"><div aria-hidden="true" style="display:grid;place-items:center;width:44px;height:44px;margin:0 0 20px;border-radius:50%%;background:%s;color:white;font-size:24px;font-weight:700">%s</div><h1 style="margin:0 0 14px;font-size:28px">%s</h1><p style="margin:0 0 10px;font-size:17px;color:#475569">%s</p><p style="margin:0 0 24px;font-size:15px;color:#64748b;word-break:break-all">%s</p><p style="margin:0;padding-top:20px;border-top:1px solid #e2e8f0;font-size:15px;color:#64748b">%s</p></section></main></body></html>`,
+		title, color, statusMark, heading, htmlEscape(message), htmlEscape(email), htmlEscape(closingMessage))
 }
 
 func (a *App) cleanForwardingVerificationEmail(w http.ResponseWriter, r *http.Request, userID, value string) (string, bool) {

apps/api/internal/app/imap_metadata.go

@@ -76,6 +76,10 @@ func (a *App) migrateFolderSortOrder(ctx context.Context) error {
 	return nil
 }
 
+func (a *App) migrateFolderIcons(ctx context.Context) error {
+	return a.ensureTableColumn(ctx, "folders", "icon", `ALTER TABLE folders ADD COLUMN icon TEXT NOT NULL DEFAULT 'folder'`)
+}
+
 func (a *App) ensureTableColumn(ctx context.Context, table, column, alterSQL string) error {
 	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(`+table+`)`)
 	if err != nil {

apps/api/internal/app/mail_handlers.go

@@ -1,12 +1,14 @@
 package app
 
 import (
+	"bytes"
 	"context"
 	"database/sql"
 	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"image/png"
 	"io"
 	"net/http"
 	"net/textproto"
@@ -85,6 +87,7 @@ func (a *App) handleMyMailboxes(w http.ResponseWriter, r *http.Request) {
 		m.CreatedAt = parseTime(created)
 		items = append(items, m)
 	}
+	markPrimaryMailboxes(items)
 	respondJSON(w, http.StatusOK, map[string]any{"items": items})
 }
 
@@ -98,12 +101,12 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "mailbox not found")
 		return
 	}
-	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.name,f.role,
+	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.name,f.role,f.icon,
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		FROM folders f LEFT JOIN messages m ON m.folder_id=f.id
-		WHERE f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
+		WHERE f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.icon,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		ORDER BY CASE
 			WHEN lower(f.name)='inbox' THEN 1000
 			WHEN lower(f.name)='sent' THEN 5000
@@ -121,7 +124,7 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 	items := []MailFolder{}
 	for rows.Next() {
 		var f MailFolder
-		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan folders")
 			return
 		}
@@ -132,7 +135,7 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleAllMailFolders(w http.ResponseWriter, r *http.Request) {
 	user := currentUser(r)
-	rows, err := a.db.QueryContext(r.Context(), `SELECT 'all-' || lower(f.name),f.name,f.role,
+	rows, err := a.db.QueryContext(r.Context(), `SELECT 'all-' || lower(f.name),f.name,f.role,MIN(f.icon),
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		MIN(f.sort_order),MAX(f.uid_validity),MAX(f.uid_next),MAX(f.highest_modseq)
@@ -158,7 +161,7 @@ func (a *App) handleAllMailFolders(w http.ResponseWriter, r *http.Request) {
 	items := []MailFolder{}
 	for rows.Next() {
 		var f MailFolder
-		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan folders")
 			return
 		}
@@ -266,6 +269,7 @@ func (a *App) handleReorderMailFolders(w http.ResponseWriter, r *http.Request) {
 func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 	var req struct {
 		Name string `json:"name"`
+		Icon string `json:"icon"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
@@ -280,6 +284,7 @@ func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("system folder already exists"))
 		return
 	}
+	icon := folderIconForName(name, req.Icon)
 	if isAllMailboxID(r.URL.Query().Get("mailboxId")) {
 		user := currentUser(r)
 		rows, err := a.db.QueryContext(r.Context(), `SELECT id FROM mailboxes WHERE user_id=? AND status='active' ORDER BY created_at,id`, user.ID)
@@ -308,12 +313,12 @@ func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		for _, mailboxID := range mailboxIDs {
-			if _, err := a.ensureCustomFolder(r.Context(), mailboxID, name); err != nil {
+			if _, err := a.ensureCustomFolder(r.Context(), mailboxID, name, icon); err != nil {
 				respondError(w, http.StatusInternalServerError, "failed to create folder")
 				return
 			}
 		}
-		respondJSON(w, http.StatusCreated, MailFolder{ID: "all-" + strings.ToLower(name), Name: name, Role: strings.ToLower(name), SortOrder: customFolderDefaultSortOrderBase})
+		respondJSON(w, http.StatusCreated, MailFolder{ID: "all-" + strings.ToLower(name), Name: name, Role: strings.ToLower(name), Icon: icon, SortOrder: customFolderDefaultSortOrderBase})
 		return
 	}
 	mb, err := a.mailboxForCurrentUser(r)
@@ -321,7 +326,7 @@ func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "mailbox not found")
 		return
 	}
-	folderID, err := a.ensureCustomFolder(r.Context(), mb.ID, name)
+	folderID, err := a.ensureCustomFolder(r.Context(), mb.ID, name, icon)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to create folder")
 		return
@@ -527,8 +532,88 @@ func (a *App) handleDeleteAllMailFolders(w http.ResponseWriter, r *http.Request,
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "moved": moved})
 }
 
-func (a *App) ensureCustomFolder(ctx context.Context, mailboxID, name string) (string, error) {
-	return a.ensureFolder(ctx, mailboxID, name)
+func (a *App) ensureCustomFolder(ctx context.Context, mailboxID, name, icon string) (string, error) {
+	var existingID string
+	err := a.db.QueryRowContext(ctx, `SELECT id FROM folders WHERE mailbox_id=? AND lower(name)=lower(?)`, mailboxID, name).Scan(&existingID)
+	if err == nil && (strings.TrimSpace(icon) == "" || strings.EqualFold(strings.TrimSpace(icon), "auto")) {
+		return existingID, nil
+	}
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return "", err
+	}
+	id, err := a.ensureFolder(ctx, mailboxID, name)
+	if err != nil {
+		return "", err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE folders SET icon=? WHERE id=? AND mailbox_id=?`, folderIconForName(name, icon), id, mailboxID)
+	return id, err
+}
+
+func folderIconForName(name, requested string) string {
+	if icon := strings.TrimSpace(requested); icon != "" && !strings.EqualFold(icon, "auto") {
+		return normalizeFolderIcon(icon)
+	}
+	value := strings.ToLower(strings.TrimSpace(name))
+	for _, match := range []struct {
+		icon  string
+		terms []string
+	}{
+		{"netflix", []string{"netflix", "奈飞", "网飞"}},
+		{"chatgpt", []string{"chatgpt", "openai", "gpt"}},
+		{"receipt", []string{"账单", "发票", "收据", "bill", "invoice", "receipt"}},
+		{"shopping", []string{"购物", "订单", "快递", "shop", "order", "delivery"}},
+		{"plane", []string{"旅行", "旅游", "机票", "酒店", "travel", "trip", "flight", "hotel"}},
+		{"graduation", []string{"学习", "教育", "课程", "学校", "study", "school", "course"}},
+		{"users", []string{"联系人", "团队", "用户", "contact", "team", "people"}},
+		{"briefcase", []string{"工作", "项目", "客户", "work", "project", "business", "client"}},
+		{"heart", []string{"收藏", "喜欢", "favorite", "favourite"}},
+		{"star", []string{"重要", "紧急", "important", "urgent"}},
+		{"shield", []string{"安全", "验证", "密码", "登录", "security", "verify", "password", "login"}},
+		{"bell", []string{"提醒", "通知", "remind", "notification"}},
+		{"mail", []string{"邮件", "邮箱", "mail", "email"}},
+	} {
+		for _, term := range match.terms {
+			if folderNameContainsTerm(value, term) {
+				return match.icon
+			}
+		}
+	}
+	return "folder"
+}
+
+func folderNameContainsTerm(value, term string) bool {
+	if term != "gpt" {
+		return strings.Contains(value, term)
+	}
+	for _, token := range strings.FieldsFunc(value, func(r rune) bool {
+		return (r < 'a' || r > 'z') && (r < '0' || r > '9')
+	}) {
+		if token == term {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizeFolderIcon(raw string) string {
+	icon := strings.TrimSpace(raw)
+	const customPrefix = "data:image/png;base64,"
+	if strings.HasPrefix(icon, customPrefix) {
+		data, err := base64.StdEncoding.DecodeString(strings.TrimPrefix(icon, customPrefix))
+		config, configErr := png.DecodeConfig(bytes.NewReader(data))
+		validDimensions := config.Width > 0 && config.Width <= 128 && config.Height > 0 && config.Height <= 128
+		if err == nil && configErr == nil && validDimensions && len(data) <= 32*1024 {
+			return icon
+		}
+		return "folder"
+	}
+	icon = strings.ToLower(icon)
+	switch icon {
+	case "folder", "mail", "briefcase", "users", "receipt", "shopping", "plane", "graduation", "heart", "star", "bell", "shield", "tag", "netflix", "chatgpt":
+		return icon
+	default:
+		return "folder"
+	}
 }
 
 func (a *App) nextCustomFolderSortOrder(ctx context.Context, mailboxID string) (int, error) {
@@ -2232,14 +2317,14 @@ func (a *App) handleBulkMove(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) folderByID(ctx context.Context, folderID, mailboxID string) (*MailFolder, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT f.id,f.name,f.role,
+	row := a.db.QueryRowContext(ctx, `SELECT f.id,f.name,f.role,f.icon,
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		FROM folders f LEFT JOIN messages m ON m.folder_id=f.id
-		WHERE f.id=? AND f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq`, folderID, mailboxID)
+		WHERE f.id=? AND f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.icon,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq`, folderID, mailboxID)
 	var f MailFolder
-	if err := row.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+	if err := row.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 		return nil, err
 	}
 	return &f, nil
@@ -2535,14 +2620,15 @@ func (a *App) ensureMailboxQuotaAvailable(ctx context.Context, db dbExecutor, ma
 		return nil
 	}
 	var quotaMB int64
-	if err := rowDB.QueryRowContext(ctx, `SELECT quota_mb FROM mailboxes WHERE id=? AND status='active'`, mailboxID).Scan(&quotaMB); err != nil {
+	var userID string
+	if err := rowDB.QueryRowContext(ctx, `SELECT u.storage_quota_mb,mb.user_id FROM mailboxes mb JOIN users u ON u.id=mb.user_id WHERE mb.id=? AND mb.status='active'`, mailboxID).Scan(&quotaMB, &userID); err != nil {
 		return err
 	}
 	if quotaMB <= 0 {
 		return nil
 	}
 	var used int64
-	if err := rowDB.QueryRowContext(ctx, `SELECT COALESCE(SUM(size_bytes),0) FROM messages WHERE mailbox_id=?`, mailboxID).Scan(&used); err != nil {
+	if err := rowDB.QueryRowContext(ctx, `SELECT COALESCE(SUM(m.size_bytes),0) FROM messages m JOIN mailboxes mb ON mb.id=m.mailbox_id WHERE mb.user_id=?`, userID).Scan(&used); err != nil {
 		return err
 	}
 	quotaBytes := quotaMB * 1024 * 1024

apps/api/internal/app/mail_translate.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"net/url"
 	"strings"
+	"sync"
 	"time"
 	"unicode/utf8"
 
@@ -64,16 +65,22 @@ func (a *App) handleTranslateMailMessage(w http.ResponseWriter, r *http.Request)
 		maxChars = 8000
 	}
 	text, truncated := truncateRunes(text, maxChars)
+	translatedHTMLResult := make(chan string, 1)
+	if strings.TrimSpace(msg.BodyHTML) != "" {
+		go func() {
+			translatedHTML, _ := translateHTMLTextNodes(r.Context(), a.policy, msg.BodyHTML, target, maxChars)
+			translatedHTMLResult <- translatedHTML
+		}()
+	} else {
+		translatedHTMLResult <- ""
+	}
 	translated, source, err := googleFreeTranslate(r.Context(), text, target)
 	if err != nil {
 		a.log.Warn("mail translation failed", "message_id", msg.ID, "target", target, "error", err)
 		respondError(w, http.StatusBadGateway, "translation failed")
 		return
 	}
-	translatedHTML := ""
-	if strings.TrimSpace(msg.BodyHTML) != "" {
-		translatedHTML, _ = translateHTMLTextNodes(r.Context(), a.policy, msg.BodyHTML, target, maxChars)
-	}
+	translatedHTML := <-translatedHTMLResult
 	respondJSON(w, http.StatusOK, translateMailMessageResponse{TranslatedText: translated, TranslatedHTML: translatedHTML, SourceLanguage: source, TargetLanguage: target, Truncated: truncated})
 }
 
@@ -131,53 +138,97 @@ func (a *App) handleTranslateExternalIMAPMessage(w http.ResponseWriter, r *http.
 		maxChars = 8000
 	}
 	text, truncated := truncateRunes(text, maxChars)
+	translatedHTMLResult := make(chan string, 1)
+	if err == nil && strings.TrimSpace(stored.BodyHTML) != "" {
+		go func() {
+			translatedHTML, _ := translateHTMLTextNodes(r.Context(), a.policy, stored.BodyHTML, target, maxChars)
+			translatedHTMLResult <- translatedHTML
+		}()
+	} else {
+		translatedHTMLResult <- ""
+	}
 	translated, source, err := googleFreeTranslate(r.Context(), text, target)
 	if err != nil {
 		a.log.Warn("external mail translation failed", "account_id", account.ID, "remote_id", chi.URLParam(r, "remoteId"), "target", target, "error", err)
 		respondError(w, http.StatusBadGateway, "translation failed")
 		return
 	}
-	translatedHTML := ""
-	if err == nil && strings.TrimSpace(stored.BodyHTML) != "" {
-		translatedHTML, _ = translateHTMLTextNodes(r.Context(), a.policy, stored.BodyHTML, target, maxChars)
-	}
+	translatedHTML := <-translatedHTMLResult
 	respondJSON(w, http.StatusOK, translateMailMessageResponse{TranslatedText: translated, TranslatedHTML: translatedHTML, SourceLanguage: source, TargetLanguage: target, Truncated: truncated})
 }
 
 func translateHTMLTextNodes(ctx context.Context, policy *HTMLPolicy, bodyHTML, target string, maxChars int) (string, error) {
+	return translateHTMLTextNodesWith(ctx, policy, bodyHTML, target, maxChars, googleFreeTranslate)
+}
+
+type htmlTextTranslator func(context.Context, string, string) (string, string, error)
+
+func translateHTMLTextNodesWith(ctx context.Context, policy *HTMLPolicy, bodyHTML, target string, maxChars int, translator htmlTextTranslator) (string, error) {
 	nodes, err := html.ParseFragment(strings.NewReader(bodyHTML), nil)
 	if err != nil {
 		return "", err
 	}
+	type translationJob struct {
+		node     *html.Node
+		original string
+		text     string
+	}
 	remaining := maxChars
-	var translateNode func(*html.Node) error
-	translateNode = func(n *html.Node) error {
+	jobs := make([]translationJob, 0)
+	var collect func(*html.Node)
+	collect = func(n *html.Node) {
 		if n.Type == html.ElementNode && shouldSkipHTMLTranslationElement(n.Data) {
-			return nil
+			return
 		}
 		if n.Type == html.TextNode {
 			text := strings.TrimSpace(n.Data)
 			if text != "" && containsTranslatableLetter(text) && remaining > 0 {
 				limited, _ := truncateRunes(text, remaining)
 				remaining -= utf8.RuneCountInString(limited)
-				translated, _, err := googleFreeTranslate(ctx, limited, target)
-				if err != nil {
-					return err
-				}
-				n.Data = strings.Replace(n.Data, text, translated, 1)
+				jobs = append(jobs, translationJob{node: n, original: text, text: limited})
 			}
 		}
 		for c := n.FirstChild; c != nil; c = c.NextSibling {
-			if err := translateNode(c); err != nil {
-				return err
-			}
+			collect(c)
 		}
-		return nil
 	}
 	for _, n := range nodes {
-		if err := translateNode(n); err != nil {
-			return "", err
-		}
+		collect(n)
+	}
+	results := make([]string, len(jobs))
+	jobIndexes := make(chan int)
+	errCh := make(chan error, 1)
+	workers := min(4, len(jobs))
+	var wg sync.WaitGroup
+	for range workers {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for index := range jobIndexes {
+				translated, _, translateErr := translator(ctx, jobs[index].text, target)
+				if translateErr != nil {
+					select {
+					case errCh <- translateErr:
+					default:
+					}
+					continue
+				}
+				results[index] = translated
+			}
+		}()
+	}
+	for index := range jobs {
+		jobIndexes <- index
+	}
+	close(jobIndexes)
+	wg.Wait()
+	select {
+	case translateErr := <-errCh:
+		return "", translateErr
+	default:
+	}
+	for index, job := range jobs {
+		job.node.Data = strings.Replace(job.node.Data, job.original, results[index], 1)
 	}
 	var b bytes.Buffer
 	for _, n := range nodes {

apps/api/internal/app/mail_translate_test.go

@@ -1,6 +1,10 @@
 package app
 
-import "testing"
+import (
+	"context"
+	"strings"
+	"testing"
+)
 
 func TestParseGoogleTranslateResponse(t *testing.T) {
 	raw := []any{
@@ -20,6 +24,22 @@ func TestParseGoogleTranslateResponse(t *testing.T) {
 	}
 }
 
+func TestTranslateHTMLTextNodesWithPreservesMarkupAndSkipsCode(t *testing.T) {
+	translator := func(_ context.Context, text, target string) (string, string, error) {
+		return strings.ToUpper(text) + "-" + target, "en", nil
+	}
+	got, err := translateHTMLTextNodesWith(context.Background(), nil, `<p>Hello <strong>world</strong></p><pre>keep me</pre>`, "zh-CN", 100, translator)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(got, `<p>HELLO-zh-CN <strong>WORLD-zh-CN</strong></p>`) {
+		t.Fatalf("translated HTML = %q", got)
+	}
+	if !strings.Contains(got, `<pre>keep me</pre>`) {
+		t.Fatalf("code block was translated: %q", got)
+	}
+}
+
 func TestTruncateRunes(t *testing.T) {
 	got, truncated := truncateRunes("你好world", 4)
 	if got != "你好wo" || !truncated {

apps/api/internal/app/mailbox_delete_test.go

@@ -6,7 +6,7 @@ import (
 	"testing"
 )
 
-func TestAdminCanDeleteOwnLastMailboxWithoutDeletingAccount(t *testing.T) {
+func TestAdminCannotDeleteOwnPrimaryMailbox(t *testing.T) {
 	a := newTestApp(t)
 	ts := httptest.NewServer(a.Router())
 	defer ts.Close()
@@ -21,10 +21,13 @@ func TestAdminCanDeleteOwnLastMailboxWithoutDeletingAccount(t *testing.T) {
 	if code := admin.do("GET", "/api/mail/mailboxes", nil, &mailboxes); code != http.StatusOK || len(mailboxes.Items) != 1 {
 		t.Fatalf("mailboxes code=%d items=%d", code, len(mailboxes.Items))
 	}
-	if code := admin.do("DELETE", "/api/admin/mailboxes/"+mailboxes.Items[0].ID, nil, &map[string]any{}); code != http.StatusOK {
-		t.Fatalf("delete final mailbox code=%d", code)
+	if !mailboxes.Items[0].Primary {
+		t.Fatal("administrator mailbox should be marked as primary")
 	}
-	if code := admin.do("GET", "/api/mail/mailboxes", nil, &mailboxes); code != http.StatusOK || len(mailboxes.Items) != 0 {
+	if code := admin.do("DELETE", "/api/admin/mailboxes/"+mailboxes.Items[0].ID, nil, &map[string]any{}); code != http.StatusBadRequest {
+		t.Fatalf("delete primary mailbox code=%d", code)
+	}
+	if code := admin.do("GET", "/api/mail/mailboxes", nil, &mailboxes); code != http.StatusOK || len(mailboxes.Items) != 1 {
 		t.Fatalf("mailboxes after delete code=%d items=%d", code, len(mailboxes.Items))
 	}
 	var me map[string]any

apps/api/internal/app/open_api_handlers.go

@@ -200,6 +200,10 @@ func (a *App) handleOpenAPICreateMailbox(w http.ResponseWriter, r *http.Request)
 		badRequest(w, errors.New("password must be at least 6 characters"))
 		return
 	}
+	if req.QuotaMB < 0 {
+		badRequest(w, errors.New("quotaMb must be zero or greater"))
+		return
+	}
 	domain, err := a.domainByID(r.Context(), req.DomainID)
 	if err != nil {
 		respondError(w, http.StatusNotFound, "domain not found")
@@ -231,7 +235,20 @@ func (a *App) handleOpenAPICreateMailbox(w http.ResponseWriter, r *http.Request)
 		respondMailboxOwnerError(w, err)
 		return
 	}
-	mailboxID, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, req.DomainID, localPart, displayName, string(passwordHash), req.QuotaMB, "active")
+	var ownerPasswordHash, ownerRole string
+	var ownerStorageQuotaMB int
+	if err := tx.QueryRowContext(r.Context(), `SELECT password_hash,role,storage_quota_mb FROM users WHERE id=?`, userID).Scan(&ownerPasswordHash, &ownerRole, &ownerStorageQuotaMB); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load owner user")
+		return
+	}
+	quotaMB := req.QuotaMB
+	if quotaMB == 0 {
+		quotaMB = ownerStorageQuotaMB
+	}
+	if ownerRole == "admin" {
+		quotaMB = 0
+	}
+	mailboxID, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, req.DomainID, localPart, displayName, ownerPasswordHash, quotaMB, "active")
 	if err != nil {
 		badRequest(w, err)
 		return
@@ -279,7 +296,11 @@ func (a *App) handleOpenAPIUpdateMailbox(w http.ResponseWriter, r *http.Request)
 		displayName = current.DisplayName
 	}
 	quotaMB := req.QuotaMB
-	if quotaMB <= 0 {
+	if quotaMB < 0 {
+		badRequest(w, errors.New("quotaMb must be zero or greater"))
+		return
+	}
+	if quotaMB == 0 {
 		quotaMB = current.QuotaMB
 	}
 	status := strings.TrimSpace(req.Status)
@@ -294,12 +315,28 @@ func (a *App) handleOpenAPIUpdateMailbox(w http.ResponseWriter, r *http.Request)
 	if userID == "" {
 		userID = current.UserID
 	}
+	if current.Primary && userID != current.UserID {
+		badRequest(w, errors.New("用户默认邮箱归属由所属账号管理，不能单独修改"))
+		return
+	}
+	if current.Primary && status != current.Status {
+		badRequest(w, errors.New("用户默认邮箱状态由所属账号管理，不能单独修改"))
+		return
+	}
 	if err := a.ensureActiveUserExists(r.Context(), userID); err != nil {
 		respondMailboxOwnerError(w, err)
 		return
 	}
-	res, err := a.db.ExecContext(r.Context(), `UPDATE mailboxes SET user_id=?,display_name=?,quota_mb=?,status=?,updated_at=? WHERE id=?`,
-		userID, displayName, quotaMB, status, a.now().UTC().Format(time.RFC3339Nano), id)
+	var ownerRole, ownerPasswordHash string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT role,password_hash FROM users WHERE id=?`, userID).Scan(&ownerRole, &ownerPasswordHash); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load owner user")
+		return
+	}
+	if ownerRole == "admin" {
+		quotaMB = 0
+	}
+	res, err := a.db.ExecContext(r.Context(), `UPDATE mailboxes SET user_id=?,display_name=?,password_hash=?,quota_mb=?,status=?,updated_at=? WHERE id=?`,
+		userID, displayName, ownerPasswordHash, quotaMB, status, a.now().UTC().Format(time.RFC3339Nano), id)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to update mailbox")
 		return
@@ -318,6 +355,14 @@ func (a *App) handleOpenAPIUpdateMailbox(w http.ResponseWriter, r *http.Request)
 
 func (a *App) handleOpenAPIDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
+	if err := a.ensureMailboxDeletable(r.Context(), id); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			respondError(w, http.StatusNotFound, "邮箱不存在或已被删除")
+		} else {
+			badRequest(w, err)
+		}
+		return
+	}
 	rows, err := a.db.QueryContext(r.Context(), `SELECT id FROM messages WHERE mailbox_id=?`, id)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "加载邮箱邮件失败")
@@ -821,8 +866,8 @@ func (a *App) resolveMailboxOwnerTx(ctx context.Context, tx *sql.Tx, userID, own
 	if displayName == "" {
 		displayName = email
 	}
-	_, err = tx.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", passwordHash, 0, now, now)
+	_, err = tx.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,storage_quota_mb,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", passwordHash, 0, defaultUserStorageQuotaMB, now, now)
 	return userID, err
 }
 

apps/api/internal/app/permission_group_handlers.go

@@ -142,11 +142,12 @@ func (a *App) handleCreatePermissionGroup(w http.ResponseWriter, r *http.Request
 func (a *App) handleUpdatePermissionGroup(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	var existingSystem int
-	if err := a.db.QueryRowContext(r.Context(), `SELECT system FROM permission_groups WHERE id=?`, id).Scan(&existingSystem); err != nil {
+	var existingName, existingDescription string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT system,name,description FROM permission_groups WHERE id=?`, id).Scan(&existingSystem, &existingName, &existingDescription); err != nil {
 		respondError(w, http.StatusNotFound, "permission group not found")
 		return
 	}
-	if intBool(existingSystem) {
+	if intBool(existingSystem) && id != PermissionGroupRegular {
 		respondError(w, http.StatusForbidden, "system permission groups cannot be edited")
 		return
 	}
@@ -161,6 +162,10 @@ func (a *App) handleUpdatePermissionGroup(w http.ResponseWriter, r *http.Request
 		return
 	}
 	name := strings.TrimSpace(req.Name)
+	if id == PermissionGroupRegular {
+		name = existingName
+		req.Description = existingDescription
+	}
 	if name == "" {
 		badRequest(w, errors.New("name is required"))
 		return

apps/api/internal/app/personal_handlers.go

@@ -111,7 +111,11 @@ func (a *App) handleApplyMailbox(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("displayName must be at most 80 characters"))
 		return
 	}
-	mailboxID, err := a.createMailboxWithPasswordHash(r.Context(), user.ID, domainID, localPart, displayName, passwordHash, 1024, "active")
+	quotaMB := defaultUserStorageQuotaMB
+	if user.Role == "admin" {
+		quotaMB = 0
+	}
+	mailboxID, err := a.createMailboxWithPasswordHash(r.Context(), user.ID, domainID, localPart, displayName, passwordHash, quotaMB, "active")
 	if err != nil {
 		if strings.Contains(strings.ToLower(err.Error()), "unique") {
 			respondError(w, http.StatusConflict, "该邮箱地址已被占用")
@@ -534,12 +538,16 @@ func (a *App) handleCreateRule(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	appliedCount := int64(0)
-	if req.ApplyToExisting && enabled {
-		appliedCount, _ = a.applyRuleToExistingMessages(r.Context(), user.ID, mailboxID, MailRule{
+	if req.ApplyToExisting {
+		appliedCount, err = a.applyRuleToExistingMessages(r.Context(), user.ID, mailboxID, MailRule{
 			ID: id, UserID: user.ID, MailboxID: mailboxID, Name: name, MatchMode: matchMode,
 			Conditions: conditions, Actions: actions, ApplyToExisting: req.ApplyToExisting, StopProcessing: req.StopProcessing,
 			FromContains: fromContains, SubjectContains: subjectContains, Action: action, Enabled: enabled,
 		})
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "rule saved but failed to apply to existing messages")
+			return
+		}
 	}
 	row := a.db.QueryRowContext(r.Context(), `SELECT id,user_id,mailbox_id,name,match_mode,conditions_json,actions_json,from_contains,subject_contains,action,apply_to_existing,stop_processing,enabled,created_at FROM mail_rules WHERE id=?`, id)
 	item, err := scanRule(row)
@@ -896,26 +904,14 @@ func (a *App) handleMailStats(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "failed to load send queue stats")
 		return
 	}
-	if mailboxID != "" && !isAllMailboxID(mailboxID) {
-		var quotaMB int64
-		if err := a.db.QueryRowContext(r.Context(), `SELECT quota_mb FROM mailboxes WHERE id=? AND user_id=?`, mailboxID, user.ID).Scan(&quotaMB); err != nil {
-			respondError(w, http.StatusInternalServerError, "failed to load quota")
-			return
-		}
-		stats.QuotaBytes = quotaMB * 1024 * 1024
-		if stats.QuotaBytes > 0 {
-			stats.QuotaUsedPct = float64(stats.StorageBytes) / float64(stats.QuotaBytes) * 100
-		}
-	} else {
-		var quotaMB int64
-		if err := a.db.QueryRowContext(r.Context(), `SELECT COALESCE(SUM(mb.quota_mb),0) FROM mailboxes mb WHERE `+where, args...).Scan(&quotaMB); err != nil {
-			respondError(w, http.StatusInternalServerError, "failed to load quota")
-			return
-		}
-		stats.QuotaBytes = quotaMB * 1024 * 1024
-		if stats.QuotaBytes > 0 {
-			stats.QuotaUsedPct = float64(stats.StorageBytes) / float64(stats.QuotaBytes) * 100
-		}
+	var quotaMB int64
+	if err := a.db.QueryRowContext(r.Context(), `SELECT storage_quota_mb FROM users WHERE id=?`, user.ID).Scan(&quotaMB); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load quota")
+		return
+	}
+	stats.QuotaBytes = quotaMB * 1024 * 1024
+	if stats.QuotaBytes > 0 {
+		stats.QuotaUsedPct = float64(stats.StorageBytes) / float64(stats.QuotaBytes) * 100
 	}
 	rows, err := a.db.QueryContext(r.Context(), `SELECT f.name,f.role,COUNT(m.id),COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0),COALESCE(SUM(m.size_bytes),0)
 		FROM mailboxes mb JOIN folders f ON f.mailbox_id=mb.id LEFT JOIN messages m ON m.folder_id=f.id
@@ -1330,7 +1326,9 @@ func (a *App) applyInboundControls(ctx context.Context, messageID, mailboxID, fr
 		if !ruleMatches(rule, msg) {
 			continue
 		}
-		_ = a.applyRuleActions(ctx, mailboxID, messageID, rule.Actions)
+		if err := a.applyRuleActions(ctx, mailboxID, messageID, rule.Actions); err != nil {
+			continue
+		}
 		if rule.StopProcessing {
 			break
 		}
@@ -1375,7 +1373,7 @@ type ruleMessage struct {
 func (a *App) ruleMessageByID(ctx context.Context, messageID string) (ruleMessage, bool) {
 	var msg ruleMessage
 	var toAddrs, ccAddrs, receivedAt string
-	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(mailbox_id,''),trim(from_addr || ' ' || COALESCE(from_name,'')),to_addrs,cc_addrs,subject,snippet,body_text,size_bytes,received_at FROM messages WHERE id=?`, messageID).
+	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(mailbox_id,''),from_addr,to_addrs,cc_addrs,subject,snippet,body_text,size_bytes,received_at FROM messages WHERE id=?`, messageID).
 		Scan(&msg.ID, &msg.MailboxID, &msg.From, &toAddrs, &ccAddrs, &msg.Subject, &msg.Snippet, &msg.BodyText, &msg.SizeBytes, &receivedAt)
 	if err != nil {
 		return ruleMessage{}, false
@@ -1407,7 +1405,7 @@ func (a *App) ruleAttachmentNames(ctx context.Context, messageID string) string
 		if err := rows.Scan(&filename, &contentType); err != nil {
 			return strings.Join(parts, " ")
 		}
-		parts = append(parts, filename, contentType)
+		parts = append(parts, filename)
 	}
 	return strings.Join(parts, " ")
 }
@@ -1453,15 +1451,23 @@ func normalizeRuleCondition(item MailRuleCondition) (MailRuleCondition, bool) {
 	if operator == "" {
 		operator = "contains"
 	}
-	switch operator {
-	case "contains", "not-contains", "equals", "not-equals", "starts-with", "ends-with":
-	case "gt", "gte", "lt", "lte", "before", "after", "on":
-	default:
+	if !validRuleConditionOperator(field, operator) {
 		return MailRuleCondition{}, false
 	}
 	return MailRuleCondition{Field: field, Operator: operator, Value: value}, true
 }
 
+func validRuleConditionOperator(field, operator string) bool {
+	switch field {
+	case "size":
+		return operator == "gt" || operator == "gte" || operator == "lt" || operator == "lte" || operator == "equals" || operator == "not-equals"
+	case "date":
+		return operator == "before" || operator == "after" || operator == "on" || operator == "equals" || operator == "not-equals"
+	default:
+		return operator == "contains" || operator == "not-contains" || operator == "equals" || operator == "not-equals" || operator == "starts-with" || operator == "ends-with"
+	}
+}
+
 func normalizeRuleMatchMode(matchMode string) string {
 	switch strings.ToLower(strings.TrimSpace(matchMode)) {
 	case "any", "or":
@@ -1710,23 +1716,37 @@ func (a *App) applyRuleActions(ctx context.Context, mailboxID, messageID string,
 	for _, action := range normalizeRuleActions(actions, "") {
 		switch action.Type {
 		case "archive":
-			if folderID, err := a.ensureFolder(ctx, mailboxID, "Archive"); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			folderID, err := a.ensureFolder(ctx, mailboxID, "Archive")
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "trash":
-			if folderID, err := a.ensureFolder(ctx, mailboxID, "Trash"); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			folderID, err := a.ensureFolder(ctx, mailboxID, "Trash")
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "move":
-			target := ruleTargetFolder(action.Value)
-			if folderID, err := a.ensureFolder(ctx, mailboxID, target); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			target, err := normalizeFolderNameForUser(action.Value)
+			if err != nil {
+				return err
+			}
+			var folderID string
+			if isSystemFolderName(target) {
+				folderID, err = a.ensureFolder(ctx, mailboxID, target)
+			} else {
+				folderID, err = a.ensureCustomFolder(ctx, mailboxID, target, "auto")
+			}
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "star":
 			starred := true
@@ -1789,21 +1809,6 @@ func (a *App) applyRuleLabel(ctx context.Context, mailboxID, messageID string, a
 	return err
 }
 
-func ruleTargetFolder(value string) string {
-	switch strings.ToLower(strings.TrimSpace(value)) {
-	case "inbox":
-		return "Inbox"
-	case "archive":
-		return "Archive"
-	case "spam":
-		return "Spam"
-	case "trash":
-		return "Trash"
-	default:
-		return "Archive"
-	}
-}
-
 func (a *App) applyRuleToExistingMessages(ctx context.Context, userID, mailboxID string, rule MailRule) (int64, error) {
 	args := []any{userID}
 	where := `mb.user_id=?`
@@ -1811,7 +1816,7 @@ func (a *App) applyRuleToExistingMessages(ctx context.Context, userID, mailboxID
 		where += ` AND m.mailbox_id=?`
 		args = append(args, mailboxID)
 	}
-	rows, err := a.db.QueryContext(ctx, `SELECT m.id FROM messages m JOIN mailboxes mb ON mb.id=m.mailbox_id WHERE `+where, args...)
+	rows, err := a.db.QueryContext(ctx, `SELECT m.id FROM messages m JOIN mailboxes mb ON mb.id=m.mailbox_id JOIN folders f ON f.id=m.folder_id WHERE `+where+` AND lower(f.name) NOT IN ('sent','drafts')`, args...)
 	if err != nil {
 		return 0, err
 	}

apps/api/internal/app/router_auth.go

@@ -139,6 +139,19 @@ func (a *App) Router() http.Handler {
 			r.Use(a.requireAdminAccess)
 			r.Get("/admin/system/version", a.handleSystemVersion)
 			r.Post("/admin/system/update", a.handleSystemUpdate)
+			r.Get("/admin/backups", a.handleListBackups)
+			r.Post("/admin/backups/settings", a.handleUpdateBackupSettings)
+			r.Post("/admin/backups/telegram/test", a.handleTestBackupTelegram)
+			r.Post("/admin/backups/telegram/discover-group", a.handleDiscoverBackupTelegramGroup)
+			r.Post("/admin/backups/google-drive/connect", a.handleGoogleDriveConnect)
+			r.Get("/admin/backups/google-drive/callback", a.handleGoogleDriveCallback)
+			r.Delete("/admin/backups/google-drive", a.handleGoogleDriveDisconnect)
+			r.Post("/admin/backups", a.handleCreateBackup)
+			r.Get("/admin/backups/{name}/download", a.handleDownloadBackup)
+			r.Post("/admin/backups/{name}/verify", a.handleVerifyBackup)
+			r.Post("/admin/backups/{name}/telegram", a.handleSendBackupTelegram)
+			r.Post("/admin/backups/{name}/google-drive", a.handleSendBackupGoogleDrive)
+			r.Delete("/admin/backups/{name}", a.handleDeleteBackup)
 			r.With(a.requirePermission(PermissionAdminOverview)).Get("/admin/overview", a.handleAdminOverview)
 			r.With(a.requireAnyPermission(PermissionUsersView, PermissionMailboxesView)).Get("/admin/users", a.handleListUsers)
 			r.With(a.requirePermission(PermissionUsersCreate)).Post("/admin/users", a.handleCreateUser)

apps/api/internal/app/submission.go

@@ -121,21 +121,59 @@ type submissionSession struct {
 }
 
 func (s *submissionSession) AuthMechanisms() []string {
-	return []string{sasl.Plain}
+	return []string{sasl.Plain, sasl.Login}
 }
 
 func (s *submissionSession) Auth(mech string) (sasl.Server, error) {
-	if !strings.EqualFold(mech, sasl.Plain) {
-		return nil, smtpserver.ErrAuthUnknownMechanism
-	}
-	return sasl.NewPlainServer(func(identity, username, password string) error {
+	authenticate := func(username, password string) error {
 		user, mailbox, err := s.app.authenticateSubmission(context.Background(), username, password)
 		if err != nil {
 			return smtpserver.ErrAuthFailed
 		}
 		s.user, s.mailbox = user, mailbox
 		return nil
-	}), nil
+	}
+	switch {
+	case strings.EqualFold(mech, sasl.Plain):
+		return sasl.NewPlainServer(func(_, username, password string) error {
+			return authenticate(username, password)
+		}), nil
+	case strings.EqualFold(mech, sasl.Login):
+		return &submissionLoginServer{authenticate: authenticate}, nil
+	default:
+		return nil, smtpserver.ErrAuthUnknownMechanism
+	}
+}
+
+type submissionLoginServer struct {
+	authenticate func(username, password string) error
+	username     string
+	step         int
+}
+
+func (s *submissionLoginServer) Next(response []byte) ([]byte, bool, error) {
+	switch s.step {
+	case 0:
+		if response == nil {
+			s.step = 1
+			return []byte("Username:"), false, nil
+		}
+		s.username = string(response)
+		s.step = 2
+		return []byte("Password:"), false, nil
+	case 1:
+		s.username = string(response)
+		s.step = 2
+		return []byte("Password:"), false, nil
+	case 2:
+		if err := s.authenticate(s.username, string(response)); err != nil {
+			return nil, false, err
+		}
+		s.step = 3
+		return nil, true, nil
+	default:
+		return nil, false, sasl.ErrUnexpectedClientResponse
+	}
 }
 
 func (s *submissionSession) Mail(from string, _ *smtpserver.MailOptions) error {

apps/api/internal/app/telegram.go

@@ -71,6 +71,7 @@ type telegramUpdate struct {
 		Chat struct {
 			ID        int64  `json:"id"`
 			Type      string `json:"type"`
+			Title     string `json:"title"`
 			FirstName string `json:"first_name"`
 			LastName  string `json:"last_name"`
 			Username  string `json:"username"`
@@ -112,7 +113,7 @@ func normalizeTelegramBodyMode(value string) string {
 
 func validTelegramPrivateChatID(value string) bool {
 	id, err := strconv.ParseInt(strings.TrimSpace(value), 10, 64)
-	return err == nil && id > 0
+	return err == nil && id != 0
 }
 
 func (a *App) handleCreateTelegramPairing(w http.ResponseWriter, r *http.Request) {
@@ -259,6 +260,50 @@ func (a *App) discoverTelegramPrivateChat(ctx context.Context, token, pairingCod
 	return "", "", errors.New("未找到匹配的私聊，请打开机器人发送绑定码后重试")
 }
 
+type telegramDiscoveredChat struct {
+	ChatID      string `json:"chatId"`
+	DisplayName string `json:"displayName"`
+}
+
+func (a *App) discoverTelegramGroups(ctx context.Context, token, pairingCode string) ([]telegramDiscoveredChat, error) {
+	var updates []telegramUpdate
+	if err := a.callTelegram(ctx, token, "getUpdates", map[string]any{
+		"limit": 100, "timeout": 0, "allowed_updates": []string{"message"},
+	}, &updates); err != nil {
+		return nil, err
+	}
+	found := make([]telegramDiscoveredChat, 0)
+	seen := make(map[int64]bool)
+	for i := len(updates) - 1; i >= 0; i-- {
+		message := updates[i].Message
+		if message == nil || (message.Chat.Type != "group" && message.Chat.Type != "supergroup") || message.Chat.ID >= 0 {
+			continue
+		}
+		text := strings.TrimSpace(message.Text)
+		fields := strings.Fields(text)
+		matches := strings.EqualFold(text, pairingCode)
+		if len(fields) == 2 && strings.HasPrefix(strings.ToLower(fields[0]), "/newszxcn") {
+			matches = strings.EqualFold(fields[1], pairingCode)
+		}
+		if !matches {
+			continue
+		}
+		if seen[message.Chat.ID] {
+			continue
+		}
+		seen[message.Chat.ID] = true
+		name := strings.TrimSpace(message.Chat.Title)
+		if name == "" {
+			name = "Telegram 群组"
+		}
+		found = append(found, telegramDiscoveredChat{ChatID: strconv.FormatInt(message.Chat.ID, 10), DisplayName: name})
+	}
+	if len(found) == 0 {
+		return nil, errors.New("未找到匹配的群组，请确认机器人已加入群组，并在群里发送查询命令")
+	}
+	return found, nil
+}
+
 func newTelegramPairingCode() (string, error) {
 	raw := make([]byte, 6)
 	if _, err := rand.Read(raw); err != nil {

apps/api/internal/app/types.go

@@ -21,8 +21,9 @@ type User struct {
 
 type AdminUser struct {
 	User
-	MailboxCount int      `json:"mailboxCount"`
-	Mailboxes    []string `json:"mailboxes"`
+	MailboxCount   int      `json:"mailboxCount"`
+	Mailboxes      []string `json:"mailboxes"`
+	StorageQuotaMB int      `json:"storageQuotaMb"`
 }
 
 type APIToken struct {
@@ -71,6 +72,7 @@ type Mailbox struct {
 	DisplayName string    `json:"displayName"`
 	QuotaMB     int       `json:"quotaMb"`
 	Status      string    `json:"status"`
+	Primary     bool      `json:"primary"`
 	UnreadCount int       `json:"unreadCount"`
 	CreatedAt   time.Time `json:"createdAt"`
 }
@@ -88,6 +90,7 @@ type MailFolder struct {
 	ID            string `json:"id"`
 	Name          string `json:"name"`
 	Role          string `json:"role"`
+	Icon          string `json:"icon"`
 	SortOrder     int    `json:"sortOrder"`
 	UnreadCount   int    `json:"unreadCount"`
 	TotalCount    int    `json:"totalCount"`

apps/web/package.json

@@ -36,7 +36,7 @@
     "@tiptap/starter-kit": "^3.27.0",
     "class-variance-authority": "^0.7.0",
     "clsx": "2.1.1",
-    "dompurify": "3.4.12",
+    "dompurify": "3.4.13",
     "lucide-react": "^0.468.0",
     "qrcode.react": "^4.2.0",
     "react": "18.3.1",

apps/web/src/components/auth-guard.tsx

@@ -1,15 +1,19 @@
 import React from "react"
 import { Navigate, useLocation } from "react-router-dom"
-import { useMe, isTimeoutError } from "@/hooks/use-me"
+import { useMe } from "@/hooks/use-me"
 import { AuthLoading, AuthError } from "@/components/auth-states"
+import { isUnauthorizedError } from "@/lib/api"
 
 export function AuthGuard({ children }: { children: React.ReactNode }) {
   const me = useMe()
   const location = useLocation()
 
   if (me.isLoading) return <AuthLoading />
-  if (me.isError && isTimeoutError(me.error)) return <AuthError message={me.error.message} onRetry={() => me.refetch()} />
-  if (me.isError || !me.data?.user) return <Navigate to="/login" replace state={{ from: location.pathname }} />
+  if (me.isError && !isUnauthorizedError(me.error)) return <AuthError message={me.error.message} onRetry={() => me.refetch()} />
+  if (me.isError || !me.data?.user) {
+    const from = `${location.pathname}${location.search}${location.hash}`
+    return <Navigate to="/login" replace state={{ from }} />
+  }
 
   return <>{children}</>
 }

apps/web/src/components/auth-states.tsx

@@ -1,17 +1,17 @@
 import { Button } from "@/components/ui/button"
 
 export function AuthLoading() {
-  return <div className="grid min-h-screen place-items-center text-muted-foreground">加载中...</div>
+  return <main className="grid min-h-screen place-items-center text-muted-foreground">加载中...</main>
 }
 
 export function AuthError({ message, onRetry }: { message: string; onRetry: () => void }) {
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
+    <main className="grid min-h-screen place-items-center bg-background px-4">
       <div className="w-full max-w-sm space-y-4 text-center">
-        <div className="text-sm font-medium">无法连接后端服务</div>
+        <div className="text-sm font-medium">服务暂时不可用</div>
         <div className="text-sm text-muted-foreground">{message}</div>
-        <Button type="button" variant="outline" onClick={onRetry}>重新加载</Button>
+        <Button type="button" variant="outline" onClick={onRetry}>重新连接</Button>
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/components/confirm-dialog.tsx

@@ -26,12 +26,12 @@ export function ConfirmDialog({
 }: ConfirmDialogProps) {
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent>
+      <DialogContent className="w-[calc(100vw-2rem)] max-w-lg rounded-lg">
         <DialogHeader>
           <DialogTitle>{title}</DialogTitle>
         </DialogHeader>
         {description && <div className="text-sm text-muted-foreground">{description}</div>}
-        <DialogFooter>
+        <DialogFooter className="gap-2 [&>button]:min-h-11 sm:[&>button]:min-h-9">
           <Button type="button" variant="outline" onClick={() => onOpenChange(false)} disabled={pending}>
             {cancelText}
           </Button>

apps/web/src/components/protected-layout.tsx

@@ -1,11 +1,10 @@
 import * as React from "react"
 import { Outlet, Link, useLocation } from "react-router-dom"
-import { BarChart3, ClipboardList, Forward, Globe2, Inbox, LogOut, Mail, Mailbox, Settings, ShieldCheck, UserCog } from "lucide-react"
+import { ArchiveRestore, BarChart3, ClipboardList, Forward, Globe2, Inbox, LogOut, Mail, Mailbox, Settings, ShieldCheck, UserCog } from "lucide-react"
 import { useMe } from "@/hooks/use-me"
 import { useLogout } from "@/hooks/use-logout"
 import { AuthGuard } from "@/components/auth-guard"
 import { Button } from "@/components/ui/button"
-import { Badge } from "@/components/ui/badge"
 import { Avatar, AvatarFallback } from "@/components/ui/avatar"
 import { SystemVersionDialog } from "@/components/system-version-dialog"
 import { hasAnyPermission } from "@/lib/permissions"
@@ -36,6 +35,7 @@ const adminSections: { key: string; label: string; icon: React.ReactNode; permis
   { key: "aliases", label: "邮件转发", icon: <Forward />, permissions: ["admin.aliases.view"] },
   { key: "messages", label: "全部邮件", icon: <Inbox />, permissions: ["admin.messages.view"] },
   { key: "sendAudit", label: "发送队列", icon: <ClipboardList />, permissions: ["admin.messages.view"] },
+  { key: "backups", label: "备份与恢复", icon: <ArchiveRestore />, permissions: ["admin.settings.view"] },
   { key: "settings", label: "系统设置", icon: <Settings />, permissions: ["admin.settings.view", "admin.templates.view"] },
 ]
 
@@ -57,7 +57,7 @@ function ProtectedContent() {
   const isProfileRoute = location.pathname.startsWith("/profile")
   const isAdminRoute = location.pathname.startsWith("/admin")
   const adminSection = new URLSearchParams(location.search).get("section") || "overview"
-  const visibleAdminSections = adminSections.filter((item) => hasAnyPermission(user, item.permissions))
+  const visibleAdminSections = adminSections.filter((item) => hasAnyPermission(user, item.permissions) && (item.key !== "backups" || user.role === "admin"))
 
   if (isMailRoute || isProfileRoute) {
     return <Outlet />
@@ -110,9 +110,6 @@ function ProtectedContent() {
                     <span className="truncate font-semibold">{user.displayName}</span>
                     <span className="truncate text-xs text-muted-foreground">{user.email}</span>
                   </div>
-                  <Badge variant={user.role === "admin" ? "default" : "secondary"} className="ml-auto text-[10px]">
-                    {user.role === "admin" ? "管理员" : "普通用户"}
-                  </Badge>
                 </Link>
               </SidebarMenuButton>
             </SidebarMenuItem>

apps/web/src/components/ui/button.tsx

@@ -5,18 +5,18 @@ import { cva, type VariantProps } from "class-variance-authority"
 import { cn } from "@/lib/utils"
 
 const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
   {
     variants: {
       variant: {
         default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+          "bg-primary text-primary-foreground hover:bg-primary/90",
         destructive:
-          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
         outline:
-          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
+          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
         secondary:
-          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
         ghost: "hover:bg-accent hover:text-accent-foreground",
         link: "text-primary underline-offset-4 hover:underline",
       },

apps/web/src/components/ui/card.tsx

@@ -8,8 +8,9 @@ const Card = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <div
     ref={ref}
+    data-slot="card"
     className={cn(
-      "rounded-xl border bg-card text-card-foreground shadow",
+      "rounded-lg border bg-card text-card-foreground shadow-sm",
       className
     )}
     {...props}
@@ -23,6 +24,7 @@ const CardHeader = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <div
     ref={ref}
+    data-slot="card-header"
     className={cn("flex flex-col space-y-1.5 p-6", className)}
     {...props}
   />
@@ -35,6 +37,7 @@ const CardTitle = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <div
     ref={ref}
+    data-slot="card-title"
     className={cn("font-semibold leading-none tracking-tight", className)}
     {...props}
   />
@@ -57,7 +60,7 @@ const CardContent = React.forwardRef<
   HTMLDivElement,
   React.HTMLAttributes<HTMLDivElement>
 >(({ className, ...props }, ref) => (
-  <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+  <div ref={ref} data-slot="card-content" className={cn("p-6 pt-0", className)} {...props} />
 ))
 CardContent.displayName = "CardContent"
 

apps/web/src/components/ui/dialog.tsx

@@ -19,7 +19,7 @@ const DialogOverlay = React.forwardRef<
   <DialogPrimitive.Overlay
     ref={ref}
     className={cn(
-      "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      "fixed inset-0 z-50 bg-black/35 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 sm:bg-black/45",
       className
     )}
     {...props}

apps/web/src/components/ui/input.tsx

@@ -8,7 +8,7 @@ const Input = React.forwardRef<HTMLInputElement, React.ComponentProps<"input">>(
       <input
         type={type}
         className={cn(
-          "flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-base shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+          "flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-base shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
           className
         )}
         ref={ref}

apps/web/src/components/ui/select.tsx

@@ -17,7 +17,7 @@ const SelectTrigger = React.forwardRef<
   <SelectPrimitive.Trigger
     ref={ref}
     className={cn(
-      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background data-[placeholder]:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background data-[placeholder]:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
       className
     )}
     {...props}

apps/web/src/components/ui/table.tsx

@@ -20,7 +20,7 @@ const TableHeader = React.forwardRef<
   HTMLTableSectionElement,
   React.HTMLAttributes<HTMLTableSectionElement>
 >(({ className, ...props }, ref) => (
-  <thead ref={ref} className={cn("[&_tr]:border-b", className)} {...props} />
+  <thead ref={ref} data-slot="table-header" className={cn("[&_tr]:border-b", className)} {...props} />
 ))
 TableHeader.displayName = "TableHeader"
 
@@ -57,6 +57,7 @@ const TableRow = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <tr
     ref={ref}
+    data-slot="table-row"
     className={cn(
       "border-b transition-colors hover:bg-muted/50 data-[state=selected]:bg-muted",
       className
@@ -72,6 +73,7 @@ const TableHead = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <th
     ref={ref}
+    data-slot="table-head"
     className={cn(
       "h-10 px-2 text-left align-middle font-medium text-muted-foreground [&:has([role=checkbox])]:pr-0 [&>[role=checkbox]]:translate-y-[2px]",
       className
@@ -87,6 +89,7 @@ const TableCell = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <td
     ref={ref}
+    data-slot="table-cell"
     className={cn(
       "p-2 align-middle [&:has([role=checkbox])]:pr-0 [&>[role=checkbox]]:translate-y-[2px]",
       className

apps/web/src/components/ui/textarea.tsx

@@ -9,7 +9,7 @@ const Textarea = React.forwardRef<
   return (
     <textarea
       className={cn(
-        "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-base shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-base shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
         className
       )}
       ref={ref}

apps/web/src/hooks/use-me.ts

@@ -1,5 +1,5 @@
 import { useQuery, type UseQueryOptions } from "@tanstack/react-query"
-import { api } from "@/lib/api"
+import { api, isUnauthorizedError } from "@/lib/api"
 import type { User } from "@/lib/api"
 
 type MeResponse = { user: User }
@@ -10,11 +10,7 @@ export function useMe(
   return useQuery({
     queryKey: ["me"],
     queryFn: api.me,
-    retry: 1,
+    retry: (failureCount, error) => !isUnauthorizedError(error) && failureCount < 1,
     ...options,
   })
 }
-
-export function isTimeoutError(error: unknown): boolean {
-  return error instanceof Error && error.message.includes("请求超时")
-}

apps/web/src/index.css

@@ -5,34 +5,34 @@
 @layer base {
   :root {
     --background: 0 0% 100%;
-    --foreground: 222.2 84% 4.9%;
+    --foreground: 0 0% 9%;
     --card: 0 0% 100%;
-    --card-foreground: 222.2 84% 4.9%;
+    --card-foreground: 0 0% 9%;
     --popover: 0 0% 100%;
-    --popover-foreground: 222.2 84% 4.9%;
-    --primary: 224 44% 12%;
+    --popover-foreground: 0 0% 9%;
+    --primary: 0 0% 12%;
     --primary-foreground: 0 0% 98%;
-    --secondary: 210 40% 96.1%;
-    --secondary-foreground: 222.2 84% 4.9%;
-    --muted: 210 40% 96.1%;
-    --muted-foreground: 215.4 16.3% 46.9%;
-    --accent: 210 40% 96.1%;
-    --accent-foreground: 222.2 84% 4.9%;
+    --secondary: 0 0% 96.1%;
+    --secondary-foreground: 0 0% 12%;
+    --muted: 0 0% 96.1%;
+    --muted-foreground: 0 0% 42%;
+    --accent: 0 0% 95%;
+    --accent-foreground: 0 0% 12%;
     --destructive: 358 88% 61%;
     --destructive-foreground: 0 0% 98%;
-    --border: 214.3 31.8% 91.4%;
-    --input: 214.3 31.8% 91.4%;
-    --ring: 216 22% 42%;
+    --border: 0 0% 89.8%;
+    --input: 0 0% 82%;
+    --ring: 0 0% 32%;
     --radius: 0.5rem;
     --app-sidebar-width: 18rem;
     --sidebar-background: 0 0% 100%;
-    --sidebar-foreground: 222.2 84% 4.9%;
-    --sidebar-primary: 224 44% 12%;
+    --sidebar-foreground: 0 0% 16%;
+    --sidebar-primary: 0 0% 12%;
     --sidebar-primary-foreground: 0 0% 98%;
-    --sidebar-accent: 210 40% 96.1%;
-    --sidebar-accent-foreground: 222.2 84% 4.9%;
-    --sidebar-border: 214.3 31.8% 91.4%;
-    --sidebar-ring: 215.4 16.3% 46.9%;
+    --sidebar-accent: 0 0% 95%;
+    --sidebar-accent-foreground: 0 0% 12%;
+    --sidebar-border: 0 0% 89.8%;
+    --sidebar-ring: 0 0% 42%;
   }
 
   * { @apply border-border; }
@@ -140,12 +140,50 @@
   }
 
   [data-sidebar="menu-button"][data-active="true"] {
-    background: hsl(var(--sidebar-accent));
+    background: hsl(var(--sidebar-accent) / 0.82);
     color: hsl(var(--sidebar-accent-foreground));
+    box-shadow: inset 2px 0 0 hsl(var(--foreground));
   }
 
   [data-sidebar="menu-button"][data-active="true"] svg {
-    color: hsl(var(--muted-foreground));
+    color: hsl(var(--foreground));
+  }
+
+  .admin-page [data-slot="card"] {
+    border-radius: 0.5rem;
+    box-shadow: none;
+  }
+
+  .admin-page [data-slot="card-header"] {
+    padding: 1.25rem;
+  }
+
+  .admin-page [data-slot="card-content"] {
+    padding: 0 1.25rem 1.25rem;
+  }
+
+  .admin-page [data-slot="card-title"] {
+    font-size: 0.9375rem;
+    line-height: 1.4;
+  }
+
+  .admin-page [data-slot="table-header"] {
+    background: hsl(var(--muted) / 0.48);
+  }
+
+  .admin-page [data-slot="table-head"] {
+    height: 2.5rem;
+    padding-left: 0.75rem;
+    padding-right: 0.75rem;
+    font-size: 0.75rem;
+  }
+
+  .admin-page [data-slot="table-cell"] {
+    padding: 0.75rem;
+  }
+
+  .admin-page [data-slot="table-row"]:hover {
+    background: hsl(var(--muted) / 0.32);
   }
 }
 

apps/web/src/lib/api-types.ts

@@ -52,12 +52,12 @@ export type PermissionGroupSummary = { id: string; name: string }
 export type PermissionGroup = { id: string; name: string; description: string; permissions: PermissionKey[]; limits: PermissionLimits; system: boolean; userCount: number; createdAt: string; updatedAt: string }
 export type User = { id: string; loginName?: string; email: string; displayName: string; role: "admin" | "user"; disabled: boolean; protected: boolean; twoFactorEnabled: boolean; mailboxLimitOverride?: number | null; permissions: PermissionKey[]; limits: PermissionLimits; permissionGroupIds: string[]; permissionGroups: PermissionGroupSummary[]; createdAt: string }
 export type APIToken = { id: string; name: string; lastUsedAt?: string; expiresAt?: string; disabled: boolean; scopes: string[]; createdAt: string; updatedAt: string }
-export type AdminUser = User & { mailboxCount: number; mailboxes?: string[] }
+export type AdminUser = User & { mailboxCount: number; mailboxes?: string[]; storageQuotaMb: number }
 export type AdminOverview = { users: number; activeUsers: number; domains: number; mailboxes: number; activeMailboxes: number; aliases: number; messages: number; unreadMessages: number; storageBytes: number }
 export type Domain = { id: string; name: string; status: string; dkimSelector: string; dkimPublicKey?: string; dnsStatus: string; dnsCheckedAt?: string; createdAt: string }
-export type Mailbox = { id: string; userId: string; userEmail?: string; domainId: string; localPart: string; address: string; displayName: string; quotaMb: number; status: string; unreadCount?: number; createdAt: string }
+export type Mailbox = { id: string; userId: string; userEmail?: string; domainId: string; localPart: string; address: string; displayName: string; quotaMb: number; status: string; primary?: boolean; unreadCount?: number; createdAt: string }
 export type Alias = { id: string; domainId: string; source: string; destination: string; enabled: boolean; createdAt: string }
-export type MailFolder = { id: string; name: string; role: string; sortOrder: number; unreadCount: number; totalCount: number; uidValidity: number; uidNext: number; highestModseq: number }
+export type MailFolder = { id: string; name: string; role: string; icon: string; sortOrder: number; unreadCount: number; totalCount: number; uidValidity: number; uidNext: number; highestModseq: number }
 export type Attachment = { id: string; messageId: string; filename: string; contentType: string; sizeBytes: number; createdAt: string }
 export type MailLabel = { id: string; mailboxId?: string; name: string; color: string; messageCount?: number }
 export type MailMessage = {
@@ -202,6 +202,11 @@ export type SystemUpdateResult = {
   targetVersion: string
   message: string
 }
+export type BackupItem = { name: string; size: number; createdAt: string; sha256?: string }
+export type BackupJob = { status: "running" | "success" | "failed"; startedAt: string; error?: string }
+export type BackupSchedule = { enabled: boolean; days: number; passwordSet: boolean; serverIp: string; chatId: string; telegramMode: "system" | "custom"; telegramEnabled: boolean; googleDriveEnabled: boolean }
+export type GoogleDriveBackupStatus = { clientId: string; clientSecretSet: boolean; connected: boolean; folderName: string }
+export type BackupList = { enabled: boolean; telegramSet: boolean; telegramLimit: number; job?: BackupJob; items: BackupItem[]; schedule: BackupSchedule; googleDrive: GoogleDriveBackupStatus }
 export type SystemSettings = {
   publicHostname: string
   publicBaseUrl: string

apps/web/src/lib/api.ts

@@ -1,9 +1,20 @@
-import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, MailLabel, MailMessage, MailTranslation, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, ForwardingSettings, ExternalImapAccount, ExternalImapAccountPayload, ExternalImapFolder, ExternalImapOAuthProvider, ExternalImapOAuthStartPayload, ExternalImapSyncRun, MailboxApplyOptions, MailTemplate, MaildirSyncHealth, SystemSettings, SystemSettingsPayload, SystemVersion, SystemUpdateResult, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits, APIToken, TwoFactorEnableResponse, BulkMoveResult, TelegramPrivateChat, TelegramPairing } from "./api-types"
+import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, MailLabel, MailMessage, MailTranslation, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, ForwardingSettings, ExternalImapAccount, ExternalImapAccountPayload, ExternalImapFolder, ExternalImapOAuthProvider, ExternalImapOAuthStartPayload, ExternalImapSyncRun, MailboxApplyOptions, MailTemplate, MaildirSyncHealth, SystemSettings, SystemSettingsPayload, SystemVersion, SystemUpdateResult, BackupList, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits, APIToken, TwoFactorEnableResponse, BulkMoveResult, TelegramPrivateChat, TelegramPairing } from "./api-types"
 export * from "./api-types"
 
 const REQUEST_TIMEOUT_MS = 15_000
 const MAIL_DELIVERY_TIMEOUT_MS = 60_000
 
+export class ApiError extends Error {
+  constructor(message: string, readonly status: number) {
+    super(message)
+    this.name = "ApiError"
+  }
+}
+
+export function isUnauthorizedError(error: unknown): boolean {
+  return error instanceof ApiError && error.status === 401
+}
+
 export type MailSearchParams = {
   q?: string
   from?: string
@@ -45,27 +56,34 @@ function appendMailSearchParams(params: URLSearchParams, search: MailSearchParam
 async function request<T>(path: string, init: RequestInit & { timeoutMs?: number } = {}): Promise<T> {
   const { timeoutMs, ...requestInit } = init
   const controller = new AbortController()
-  const timeout = window.setTimeout(() => controller.abort(), timeoutMs || REQUEST_TIMEOUT_MS)
+  let timedOut = false
+  const timeout = window.setTimeout(() => {
+    timedOut = true
+    controller.abort()
+  }, timeoutMs || REQUEST_TIMEOUT_MS)
   const externalSignal = requestInit.signal
+  const abortFromExternalSignal = () => controller.abort()
   if (externalSignal) {
     if (externalSignal.aborted) controller.abort()
-    else externalSignal.addEventListener("abort", () => controller.abort(), { once: true })
+    else externalSignal.addEventListener("abort", abortFromExternalSignal, { once: true })
   }
   try {
     const res = await fetch(path, { credentials: "include", headers: { "Content-Type": "application/json", ...(requestInit.headers || {}) }, ...requestInit, signal: controller.signal })
     if (!res.ok) {
       let message = `${res.status} ${res.statusText}`
       try { const body = await res.json(); message = body.error || message } catch {}
-      throw new Error(message)
+      throw new ApiError(message, res.status)
     }
     return res.json() as Promise<T>
   } catch (error) {
     if (error instanceof DOMException && error.name === "AbortError") {
-      throw new Error("请求超时，请检查后端服务是否正常")
+      throw new Error(timedOut ? "请求超时，请检查后端服务是否正常" : "请求已取消")
     }
+    if (error instanceof TypeError) throw new Error("无法连接后端服务，请检查服务状态")
     throw error instanceof Error ? error : new Error("网络请求失败")
   } finally {
     window.clearTimeout(timeout)
+    externalSignal?.removeEventListener("abort", abortFromExternalSignal)
   }
 }
 
@@ -154,8 +172,8 @@ export const api = {
   updatePermissionGroup: (id: string, payload: { name: string; description: string; permissions: PermissionKey[]; limits: PermissionLimits }) => request<PermissionGroup>(`/api/admin/permission-groups/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   defaultPermissionLimits: () => request<PermissionLimits>("/api/admin/permission-limits/defaults"),
   deletePermissionGroup: (id: string) => request<{ ok: boolean }>(`/api/admin/permission-groups/${id}`, { method: "DELETE" }),
-  createUser: (payload: { email: string; displayName: string; role: "user"; password: string; disabled: boolean; mailboxLimitOverride?: number }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
-  updateUser: (id: string, payload: { email?: string; displayName: string; role: "admin" | "user"; disabled: boolean; mailboxLimitOverride?: number; permissionGroupIds?: string[] }) => request<AdminUser>(`/api/admin/users/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  createUser: (payload: { email: string; displayName: string; role: "user"; password: string; disabled: boolean; mailboxLimitOverride?: number; storageQuotaMb?: number; permissionGroupIds?: string[] }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
+  updateUser: (id: string, payload: { email?: string; displayName: string; role: "admin" | "user"; disabled: boolean; mailboxLimitOverride?: number; storageQuotaMb?: number; permissionGroupIds?: string[] }) => request<AdminUser>(`/api/admin/users/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   resetUserPassword: (id: string, password: string) => request<{ ok: boolean }>(`/api/admin/users/${id}/password`, { method: "POST", body: JSON.stringify({ password }) }),
   deleteUser: (id: string) => request<{ ok: boolean }>(`/api/admin/users/${id}`, { method: "DELETE" }),
   domains: () => request<ListResponse<Domain>>("/api/admin/domains"),
@@ -163,7 +181,7 @@ export const api = {
   updateDomain: (id: string, payload: { status: string }) => request<Domain>(`/api/admin/domains/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteDomain: (id: string) => request<{ ok: boolean }>(`/api/admin/domains/${id}`, { method: "DELETE" }),
   mailboxes: () => request<ListResponse<Mailbox>>("/api/admin/mailboxes"),
-  createMailbox: (payload: { domainId: string; localPart: string; displayName: string; password: string; quotaMb: number; role: "user"; ownerEmail?: string; userId?: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
+  createMailbox: (payload: { domainId: string; localPart: string; displayName?: string; userId: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
   updateMailbox: (id: string, payload: { userId: string; displayName: string; quotaMb: number; status: string }) => request<Mailbox>(`/api/admin/mailboxes/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteMailbox: (id: string) => request<{ ok: boolean }>(`/api/admin/mailboxes/${id}`, { method: "DELETE" }),
   aliases: () => request<ListResponse<Alias>>("/api/admin/aliases"),
@@ -193,6 +211,17 @@ export const api = {
   },
   systemVersion: () => request<SystemVersion>("/api/admin/system/version"),
   updateSystem: () => request<SystemUpdateResult>("/api/admin/system/update", { method: "POST", timeoutMs: 45_000 }),
+  backups: () => request<BackupList>("/api/admin/backups"),
+  createBackup: (password: string, confirmPassword: string, sendTelegram: boolean, uploadGoogleDrive: boolean) => request<{ ok: boolean; message: string }>("/api/admin/backups", { method: "POST", body: JSON.stringify({ password, confirmPassword, sendTelegram, uploadGoogleDrive }) }),
+  updateBackupSettings: (payload: { enabled: boolean; days: number; password: string; confirmPassword: string; serverIp: string; chatId: string; telegramMode: "system" | "custom"; telegramEnabled: boolean; googleDriveEnabled: boolean; googleClientId: string; googleClientSecret: string; googleFolderName: string }) => request<import("./api-types").BackupSchedule>("/api/admin/backups/settings", { method: "POST", body: JSON.stringify(payload) }),
+  testBackupTelegram: (payload: { mode: "system" | "custom"; chatId: string }) => request<{ ok: boolean }>("/api/admin/backups/telegram/test", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  discoverBackupTelegramGroup: (pairingCode: string) => request<{ items: TelegramPrivateChat[] }>("/api/admin/backups/telegram/discover-group", { method: "POST", body: JSON.stringify({ pairingCode }) }),
+  connectGoogleDrive: () => request<{ url: string }>("/api/admin/backups/google-drive/connect", { method: "POST" }),
+  disconnectGoogleDrive: () => request<{ ok: boolean }>("/api/admin/backups/google-drive", { method: "DELETE" }),
+  verifyBackup: (name: string) => request<{ ok: boolean; sha256: string }>(`/api/admin/backups/${encodeURIComponent(name)}/verify`, { method: "POST", timeoutMs: 60_000 }),
+  sendBackupTelegram: (name: string) => request<{ ok: boolean }>(`/api/admin/backups/${encodeURIComponent(name)}/telegram`, { method: "POST", timeoutMs: 10 * 60_000 }),
+  sendBackupGoogleDrive: (name: string) => request<{ ok: boolean }>(`/api/admin/backups/${encodeURIComponent(name)}/google-drive`, { method: "POST", timeoutMs: 30 * 60_000 }),
+  deleteBackup: (name: string) => request<{ ok: boolean }>(`/api/admin/backups/${encodeURIComponent(name)}`, { method: "DELETE" }),
   systemSettings: () => request<SystemSettings>("/api/admin/settings"),
   maildirSyncHealth: () => request<MaildirSyncHealth>("/api/admin/maildir-sync/health"),
   updateSystemSettings: (payload: SystemSettingsPayload) => request<SystemSettings>("/api/admin/settings", { method: "POST", body: JSON.stringify(payload) }),
@@ -215,9 +244,9 @@ export const api = {
   externalMessage: (id: string, remoteId: string) => request<MailMessage>(`/api/mail/external-accounts/${id}/messages/${encodeURIComponent(remoteId)}`),
   markExternalRead: (id: string, remoteId: string, read: boolean) => request<{ ok: boolean }>(`/api/mail/external-accounts/${id}/messages/${encodeURIComponent(remoteId)}/mark-read`, { method: "POST", body: JSON.stringify({ read }) }),
   folders: (mailboxId?: string) => request<ListResponse<MailFolder>>(`/api/mail/folders${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
-  createFolder: (payload: { mailboxId?: string; name: string }) => {
+  createFolder: (payload: { mailboxId?: string; name: string; icon?: string }) => {
     const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""
-    return request<MailFolder>(`/api/mail/folders${query}`, { method: "POST", body: JSON.stringify({ name: payload.name }) })
+    return request<MailFolder>(`/api/mail/folders${query}`, { method: "POST", body: JSON.stringify({ name: payload.name, icon: payload.icon }) })
   },
   reorderFolders: (payload: { mailboxId?: string; folderIds: string[]; folders?: { id: string; sortOrder: number }[] }) => {
     const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""

apps/web/src/lib/navigation.ts

@@ -0,0 +1,4 @@
+export function safeReturnPath(value: unknown, fallback = "/"): string {
+  if (typeof value !== "string" || !value.startsWith("/") || value.startsWith("//")) return fallback
+  return value
+}

apps/web/src/pages/login.tsx

@@ -1,5 +1,5 @@
 import * as React from "react"
-import { Link, Navigate } from "react-router-dom"
+import { Link, Navigate, useLocation } from "react-router-dom"
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { ArrowRight, KeyRound, LockKeyhole } from "lucide-react"
 import { api } from "@/lib/api"
@@ -10,9 +10,12 @@ import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { useToast } from "@/hooks/use-toast"
+import { safeReturnPath } from "@/lib/navigation"
+import { AuthError, AuthLoading } from "@/components/auth-states"
 
 export function LoginPage() {
   const me = useMe()
+  const location = useLocation()
   const qc = useQueryClient()
   const { toast } = useToast()
   const publicSettings = useQuery({ queryKey: ["public-settings"], queryFn: api.publicSettings })
@@ -33,9 +36,12 @@ export function LoginPage() {
     onError: (e) => toast({ title: "登录失败", description: e.message }),
   })
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
-  if (me.data?.user) return <Navigate to="/" replace />
+  const returnPath = safeReturnPath((location.state as { from?: unknown } | null)?.from)
+  if (me.data?.user) return <Navigate to={returnPath} replace />
+  if (publicSettings.isLoading) return <AuthLoading />
+  if (publicSettings.isError) return <AuthError message={publicSettings.error.message} onRetry={() => { void publicSettings.refetch() }} />
   return (
-    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+    <main className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
       <div className="w-full max-w-[420px]">
         <div className="mb-7 text-center">
           <h1 className="text-3xl font-semibold tracking-tight">NewSzxcn 邮箱</h1>
@@ -82,6 +88,6 @@ export function LoginPage() {
           </div>
         )}
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/pages/mail.tsx

@@ -11,7 +11,7 @@ import TextAlign from "@tiptap/extension-text-align"
 import Placeholder from "@tiptap/extension-placeholder"
 import { BackgroundColor, Color, FontFamily, FontSize, TextStyle } from "@tiptap/extension-text-style"
 import { useNavigate } from "react-router-dom"
-import { AlignCenter, AlignLeft, AlignRight, Archive, ArrowLeft, Ban, Bold, Calendar, Check, ChevronDown, Clock3, Code2, Copy, Download, Ellipsis, Eraser, Eye, FileText, Folder, Forward, Highlighter, History, Image, Inbox, IndentDecrease, IndentIncrease, Italic, Link, List, ListOrdered, Mail, Mailbox as MailboxIcon, MailCheck, MailQuestion, Moon, PanelLeftOpen, Paperclip, PencilLine, Plus, Quote, Redo2, RefreshCcw, Reply, RotateCcw, Search, Send, Settings, ShieldCheck, Signature, SlidersHorizontal, Smile, Star, Strikethrough, Sun, Trash2, Type, Underline, Undo2, Upload, X } from "lucide-react"
+import { AlignCenter, AlignLeft, AlignRight, Archive, ArrowLeft, Ban, Bell, Bold, Bot, Briefcase, Calendar, Check, ChevronDown, Clock3, Code2, Copy, Download, Ellipsis, Eraser, Eye, FileText, Folder, Forward, GraduationCap, Heart, Highlighter, History, Image, Inbox, IndentDecrease, IndentIncrease, Italic, Link, List, ListOrdered, Mail, Mailbox as MailboxIcon, MailCheck, MailQuestion, Moon, PanelLeftOpen, Paperclip, PencilLine, Plane, Plus, Quote, Receipt, Redo2, RefreshCcw, Reply, RotateCcw, Search, Send, Settings, ShieldCheck, ShoppingBag, Signature, SlidersHorizontal, Smile, Sparkles, Star, Strikethrough, Sun, Tag, Trash2, Type, Underline, Undo2, Upload, Users, X } from "lucide-react"
 import { api, ExternalImapAccount, ListResponse, Mailbox, MailFolder, MailLabel, MailMessage, MailSearchParams, SendPayload, DraftPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, PermissionLimits } from "@/lib/api"
 import { cn, decodeMimeHeader, formatBytes, formatDate, formatDateTime, generateLabelColor } from "@/lib/utils"
 import { applyTheme, getInitialTheme } from "@/lib/theme"
@@ -29,6 +29,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@
 import { ScrollArea } from "@/components/ui/scroll-area"
 import { Separator } from "@/components/ui/separator"
 import { Skeleton } from "@/components/ui/skeleton"
+import { Switch } from "@/components/ui/switch"
 import { Avatar, AvatarFallback } from "@/components/ui/avatar"
 import { ConfirmDialog } from "@/components/confirm-dialog"
 import {
@@ -49,6 +50,65 @@ import { useToast } from "@/hooks/use-toast"
 import { hasPermission } from "@/lib/permissions"
 
 const folderIcons: Record<string, React.ReactNode> = { inbox: <Inbox className="h-4 w-4" />, sent: <Send className="h-4 w-4" />, drafts: <FileText className="h-4 w-4" />, archive: <Archive className="h-4 w-4" />, spam: <Ban className="h-4 w-4" />, trash: <Trash2 className="h-4 w-4" /> }
+function NetflixFolderIcon({ className }: { className?: string }) {
+  return <span aria-hidden="true" className={cn("inline-flex items-center justify-center font-black text-red-600", className)}>N</span>
+}
+const customFolderIconOptions = [
+  { key: "folder", label: "文件夹", icon: Folder },
+  { key: "mail", label: "邮件", icon: Mail },
+  { key: "briefcase", label: "工作", icon: Briefcase },
+  { key: "users", label: "联系人", icon: Users },
+  { key: "receipt", label: "账单", icon: Receipt },
+  { key: "shopping", label: "购物", icon: ShoppingBag },
+  { key: "plane", label: "旅行", icon: Plane },
+  { key: "graduation", label: "学习", icon: GraduationCap },
+  { key: "heart", label: "收藏", icon: Heart },
+  { key: "star", label: "重要", icon: Star },
+  { key: "bell", label: "提醒", icon: Bell },
+  { key: "shield", label: "安全", icon: ShieldCheck },
+  { key: "tag", label: "分类", icon: Tag },
+  { key: "netflix", label: "Netflix", icon: NetflixFolderIcon },
+  { key: "chatgpt", label: "ChatGPT", icon: Bot },
+] as const
+function suggestedFolderIcon(name: string) {
+  const value = name.trim().toLocaleLowerCase()
+  if (/netflix|奈飞|网飞/.test(value)) return "netflix"
+  if (/chatgpt|openai|\bgpt\b/.test(value)) return "chatgpt"
+  if (/账单|发票|收据|bill|invoice|receipt/.test(value)) return "receipt"
+  if (/购物|订单|快递|shop|order|delivery/.test(value)) return "shopping"
+  if (/旅行|旅游|机票|酒店|travel|trip|flight|hotel/.test(value)) return "plane"
+  if (/学习|教育|课程|学校|study|school|course/.test(value)) return "graduation"
+  if (/联系人|团队|用户|contact|team|people/.test(value)) return "users"
+  if (/工作|项目|客户|work|project|business|client/.test(value)) return "briefcase"
+  if (/收藏|喜欢|favorite|favourite/.test(value)) return "heart"
+  if (/重要|紧急|important|urgent/.test(value)) return "star"
+  if (/安全|验证|密码|登录|security|verify|password|login/.test(value)) return "shield"
+  if (/提醒|通知|remind|notification/.test(value)) return "bell"
+  if (/邮件|邮箱|mail|email/.test(value)) return "mail"
+  return "folder"
+}
+
+async function prepareFolderIcon(file: File) {
+  if (!/^image\/(png|jpe?g|webp)$/i.test(file.type)) throw new Error("仅支持 PNG、JPG 或 WebP 图片")
+  if (file.size > 2 * 1024 * 1024) throw new Error("原图不能超过 2 MB")
+  const bitmap = await createImageBitmap(file)
+  try {
+    const canvas = document.createElement("canvas")
+    canvas.width = 64
+    canvas.height = 64
+    const context = canvas.getContext("2d")
+    if (!context) throw new Error("无法处理该图片")
+    const scale = Math.min(64 / bitmap.width, 64 / bitmap.height)
+    const width = Math.max(1, Math.round(bitmap.width * scale))
+    const height = Math.max(1, Math.round(bitmap.height * scale))
+    context.drawImage(bitmap, Math.round((64 - width) / 2), Math.round((64 - height) / 2), width, height)
+    const result = canvas.toDataURL("image/png")
+    if (result.length > 44_000) throw new Error("处理后的图标过大")
+    return result
+  } finally {
+    bitmap.close()
+  }
+}
 const folderLabels: Record<string, string> = {
   Inbox: "收件箱",
   Sent: "已发送",
@@ -143,6 +203,8 @@ export function MailPage() {
   const [selectedMailboxId, setSelectedMailboxId] = React.useState("all")
   const [selectedExternalAccountId, setSelectedExternalAccountId] = React.useState("")
   const [expandedExternalAccountIds, setExpandedExternalAccountIds] = React.useState<string[]>([])
+  const [foldersExpanded, setFoldersExpanded] = React.useState(true)
+  const [labelsExpanded, setLabelsExpanded] = React.useState(true)
   const [externalFolder, setExternalFolder] = React.useState("INBOX")
   const [darkMode, setDarkMode] = React.useState(getInitialTheme)
   const [language, setLanguage] = useLanguage()
@@ -155,7 +217,6 @@ export function MailPage() {
   const [autoRefreshing, setAutoRefreshing] = React.useState(false)
   const [exportingMail, setExportingMail] = React.useState(false)
   const [importingMail, setImportingMail] = React.useState(false)
-  const [, setLastAutoRefreshAt] = React.useState<Date | null>(null)
   const [bulkPending, setBulkPending] = React.useState(false)
   const [pendingConfirm, setPendingConfirm] = React.useState<PendingConfirm | null>(null)
   const [cancelingScheduledId, setCancelingScheduledId] = React.useState("")
@@ -426,8 +487,17 @@ export function MailPage() {
     },
     onSettled: () => { qc.invalidateQueries({ queryKey: ["labels"] }); qc.invalidateQueries({ queryKey: ["messages"] }) },
   })
-  const del = useMutation({ mutationFn: (id: string) => api.delete(id), onSuccess: async () => { setSelectedId(null); setPendingConfirm(null); await qc.invalidateQueries({ queryKey: ["messages"] }); await qc.invalidateQueries({ queryKey: ["folders"] }); await qc.invalidateQueries({ queryKey: ["mailboxes"] }); await qc.invalidateQueries({ queryKey: ["mail-stats"] }); await qc.invalidateQueries({ queryKey: ["labels"] }); toast({ title: "已删除" }) }, onError: (error) => toast({ title: "删除失败", description: error.message }) })
-  const move = useMutation({ mutationFn: ({ id, folder }: { id: string; folder: string }) => api.move(id, folder), onSuccess: async () => { setSelectedId(null); await qc.invalidateQueries({ queryKey: ["messages"] }); await qc.invalidateQueries({ queryKey: ["folders"] }); await qc.invalidateQueries({ queryKey: ["mailboxes"] }); await qc.invalidateQueries({ queryKey: ["mail-stats"] }); await qc.invalidateQueries({ queryKey: ["labels"] }); toast({ title: "已移动" }) } })
+  const del = useMutation({
+    mutationFn: ({ id }: { id: string; permanent: boolean }) => api.delete(id),
+    onSuccess: async (_, { permanent }) => {
+      setSelectedId(null)
+      setPendingConfirm(null)
+      await refreshMailData()
+      toast({ title: permanent ? "邮件已永久删除" : "邮件已移入已删除" })
+    },
+    onError: (error) => toast({ title: "删除失败", description: error.message }),
+  })
+  const move = useMutation({ mutationFn: ({ id, folder }: { id: string; folder: string }) => api.move(id, folder), onSuccess: async () => { setSelectedId(null); await qc.invalidateQueries({ queryKey: ["messages"] }); await qc.invalidateQueries({ queryKey: ["folders"] }); await qc.invalidateQueries({ queryKey: ["mailboxes"] }); await qc.invalidateQueries({ queryKey: ["mail-stats"] }); await qc.invalidateQueries({ queryKey: ["labels"] }); toast({ title: "已移动" }) }, onError: (error) => toast({ title: "移动失败", description: error.message }) })
   const cancelScheduledSend = useMutation({
     mutationFn: (item: ScheduledSend) => api.cancelScheduledSend(item.id),
     onMutate: (item) => setCancelingScheduledId(item.id),
@@ -439,7 +509,7 @@ export function MailPage() {
     onSettled: () => setCancelingScheduledId(""),
   })
   const createFolder = useMutation({
-    mutationFn: (name: string) => api.createFolder({ mailboxId: activeMailboxId, name }),
+    mutationFn: ({ name, icon }: { name: string; icon: string }) => api.createFolder({ mailboxId: activeMailboxId, name, icon }),
     onSuccess: (created) => {
       qc.invalidateQueries({ queryKey: ["folders"] })
       setFolderDialogOpen(false)
@@ -646,7 +716,6 @@ export function MailPage() {
         qc.invalidateQueries({ queryKey: ["send-queue"] }),
         qc.invalidateQueries({ queryKey: ["mail-notifications"] }),
       ]).finally(() => {
-        setLastAutoRefreshAt(new Date())
         window.setTimeout(() => setAutoRefreshing(false), 600)
       })
     }, mailRefreshInterval || 30000)
@@ -700,10 +769,12 @@ export function MailPage() {
   const compactAllSelected = visibleMessageIds.length > 0 && selectedCountOnPage === visibleMessageIds.length
   const compactSomeSelected = selectedCountOnPage > 0 && !compactAllSelected
   const mailMessagesLoading = mailView === "external" ? externalMessages.isLoading : mailView === "unknown" ? unknownMessages.isLoading : messages.isLoading
+  const mailMessagesError = mailView === "external" ? externalMessages.error : mailView === "unknown" ? unknownMessages.error : messages.error
   const mailMessagesLoadingMore = mailView === "external" ? externalMessages.isFetchingNextPage : mailView === "unknown" ? unknownMessages.isFetchingNextPage : messages.isFetchingNextPage
   const hasMoreMessages = mailView === "external" ? !!externalMessages.hasNextPage : mailView === "unknown" ? !!unknownMessages.hasNextPage : !!messages.hasNextPage
   const canLoadMore = hasMoreMessages && !mailMessagesLoadingMore
   const loadMoreMessages = () => mailView === "external" ? externalMessages.fetchNextPage() : mailView === "unknown" ? unknownMessages.fetchNextPage() : messages.fetchNextPage()
+  const refetchMessages = () => mailView === "external" ? externalMessages.refetch() : mailView === "unknown" ? unknownMessages.refetch() : messages.refetch()
   function toggleCompactSelectAll(checked: boolean) {
     setCompactSelectedIds(checked ? visibleMessageIds : [])
   }
@@ -753,10 +824,19 @@ export function MailPage() {
         await Promise.all(ids.map((id) => api.star(id, starred)))
       } else if (action === "delete") {
         await Promise.all(ids.map((id) => api.delete(id)))
+        completionTitle = `已永久删除 ${ids.length} 封邮件`
       } else {
         const target = action === "archive" ? "Archive" : action === "inbox" ? "Inbox" : action === "trash" ? "Trash" : "Spam"
         const result = await api.bulkMove(ids, target)
-        completionTitle = result.ok ? result.message : "批量移动部分失败"
+        completionTitle = result.ok
+          ? target === "Trash"
+            ? `已将 ${result.moved} 封邮件移入已删除`
+            : target === "Spam"
+              ? `已将 ${result.moved} 封邮件移入垃圾邮件`
+              : target === "Inbox"
+                ? `已将 ${result.moved} 封邮件移回收件箱`
+                : `已归档 ${result.moved} 封邮件`
+          : "批量移动部分失败"
         completionDescription = result.ok ? undefined : result.message
       }
       if (selectedId && ids.includes(selectedId)) setSelectedId(null)
@@ -788,11 +868,14 @@ export function MailPage() {
     }
   }
   function confirmDeleteMessage(message: MailMessage) {
+    const permanent = message.folder === "Trash"
     setPendingConfirm({
-      title: "删除这封邮件？",
-      description: `邮件“${message.subject || "无主题"}”将被删除。`,
-      confirmText: "删除邮件",
-      onConfirm: () => del.mutate(message.id),
+      title: permanent ? "永久删除这封邮件？" : "将这封邮件移入已删除？",
+      description: permanent
+        ? `邮件“${message.subject || "无主题"}”将被永久删除，且无法恢复。`
+        : `邮件“${message.subject || "无主题"}”将移入已删除。`,
+      confirmText: permanent ? "永久删除" : "移入已删除",
+      onConfirm: () => del.mutate({ id: message.id, permanent }),
     })
   }
   function openCompose(draft?: ComposeDraft) {
@@ -902,6 +985,14 @@ export function MailPage() {
   function closeSidebarContextMenu() {
     setSidebarContextMenu(null)
   }
+  function runAfterClosingMobileSidebar(action: () => void) {
+    if (!isMobile) {
+      action()
+      return
+    }
+    if (mobileSidebarOpen) setMobileSidebarOpen(false)
+    window.setTimeout(action, 250)
+  }
   function activateSidebarItem(item: MailMenuItem) {
     if (item.type === "starred") openStarred()
     else if (item.type === "scheduled") openScheduled()
@@ -1103,7 +1194,6 @@ export function MailPage() {
     try {
       await refreshMailData()
       const refreshedAt = new Date()
-      setLastAutoRefreshAt(refreshedAt)
       toast({ title: "邮件已刷新", description: `更新于 ${refreshedAt.toLocaleTimeString([], { hour: "2-digit", minute: "2-digit", second: "2-digit" })}` })
     } catch (error) {
       toast({ title: "刷新失败", description: error instanceof Error ? error.message : "请稍后重试" })
@@ -1263,6 +1353,7 @@ export function MailPage() {
         )}
       </SidebarHeader>
       <SidebarContent className="px-1">
+        {!sidebarCollapsed && publicSettings.isError && <SidebarQueryFailure label="邮箱设置读取失败" onRetry={() => { void publicSettings.refetch() }} />}
         <SidebarGroup>
           {!sidebarCollapsed && (
             <div className="flex items-center justify-between px-2 py-1">
@@ -1316,8 +1407,10 @@ export function MailPage() {
               )}
             </SidebarMenu>
             {folders.isLoading && <FolderSkeleton />}
+            {!sidebarCollapsed && folders.isError && <SidebarQueryFailure label="文件夹读取失败" onRetry={() => { void folders.refetch() }} />}
           </SidebarGroupContent>
         </SidebarGroup>
+        {!sidebarCollapsed && externalImapEnabled && externalMailAccounts.isError && <SidebarQueryFailure label="外部邮箱读取失败" onRetry={() => { void externalMailAccounts.refetch() }} />}
         {externalAccountItems.length > 0 && <SidebarGroup>
           {!sidebarCollapsed && <SidebarGroupLabel>外部邮箱</SidebarGroupLabel>}
           <SidebarGroupContent>
@@ -1360,6 +1453,7 @@ export function MailPage() {
                     </SidebarMenuItem>
                   ))}
                   {!sidebarCollapsed && expanded && externalFolders.isLoading && <FolderSkeleton />}
+                  {!sidebarCollapsed && expanded && account.id === selectedExternalAccountId && externalFolders.isError && <SidebarQueryFailure label="远端文件夹读取失败" onRetry={() => { void externalFolders.refetch() }} />}
                 </React.Fragment>
               )})}
             </SidebarMenu>
@@ -1368,15 +1462,18 @@ export function MailPage() {
         {(customMailMenuItems.length > 0 || canManageFolders) && <SidebarGroup>
           {!sidebarCollapsed && (
             <div className="flex items-center justify-between px-2 py-1">
-              <SidebarGroupLabel className="m-0 h-auto gap-1 p-0 text-xs font-semibold text-muted-foreground"><ChevronDown className="h-3 w-3" />文件夹</SidebarGroupLabel>
+              <Button type="button" variant="ghost" className="h-auto min-w-0 justify-start gap-1 p-0 text-xs font-semibold text-muted-foreground hover:bg-transparent hover:text-foreground" aria-expanded={foldersExpanded} aria-controls="mail-sidebar-folders" onClick={() => setFoldersExpanded((value) => !value)}>
+                <ChevronDown className={cn("h-3 w-3 shrink-0 transition-transform", !foldersExpanded && "-rotate-90")} />
+                <span>文件夹</span>
+              </Button>
               {canManageFolders && (
-                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" onClick={() => setFolderDialogOpen(true)}>
+                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" aria-label="新建文件夹" title="新建文件夹" onClick={() => runAfterClosingMobileSidebar(() => setFolderDialogOpen(true))}>
                   <Plus className="h-3.5 w-3.5" />
                 </Button>
               )}
             </div>
           )}
-          <SidebarGroupContent>
+          {foldersExpanded && <SidebarGroupContent id="mail-sidebar-folders">
             <SidebarMenu>
               {customMailMenuItems.map((item) => (
                 <SidebarMenuItem
@@ -1422,19 +1519,22 @@ export function MailPage() {
                 />
               )}
             </SidebarMenu>
-          </SidebarGroupContent>
+          </SidebarGroupContent>}
         </SidebarGroup>}
         {(canReadMail || canManageLabels) && <SidebarGroup>
           {!sidebarCollapsed && (
             <div className="flex items-center justify-between px-2 py-1">
-              <SidebarGroupLabel className="m-0 h-auto gap-1 p-0 text-xs font-semibold text-muted-foreground"><ChevronDown className="h-3 w-3" />标签</SidebarGroupLabel>
+              <Button type="button" variant="ghost" className="h-auto min-w-0 justify-start gap-1 p-0 text-xs font-semibold text-muted-foreground hover:bg-transparent hover:text-foreground" aria-expanded={labelsExpanded} aria-controls="mail-sidebar-labels" onClick={() => setLabelsExpanded((value) => !value)}>
+                <ChevronDown className={cn("h-3 w-3 shrink-0 transition-transform", !labelsExpanded && "-rotate-90")} />
+                <span>标签</span>
+              </Button>
               {canManageCurrentMailboxLabels && (
                 <div className="flex items-center gap-0.5">
-                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" onClick={() => { setNewLabelEditing(true); setLabelEditMode(true) }}>
+                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" aria-label="新建标签" title="新建标签" onClick={() => { setNewLabelEditing(true); setLabelEditMode(true) }}>
                   <Plus className="h-3.5 w-3.5" />
                 </Button>
                 {labelEditMode && (
-                  <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" onClick={() => setLabelEditMode((v) => !v)}>
+                  <Button type="button" variant="ghost" size="icon" className="h-5 w-5 text-muted-foreground hover:bg-transparent hover:text-foreground" aria-label="完成标签编辑" title="完成编辑" onClick={() => setLabelEditMode((v) => !v)}>
                     <Check className="h-3 w-3" />
                   </Button>
                 )}
@@ -1442,7 +1542,7 @@ export function MailPage() {
               )}
             </div>
           )}
-          <SidebarGroupContent>
+          {labelsExpanded && <SidebarGroupContent id="mail-sidebar-labels">
             <SidebarMenu>
               {canReadMail && labelItems.map((label) => {
                 const dotColor = labelDotColor(label)
@@ -1479,7 +1579,7 @@ export function MailPage() {
                   </SidebarMenuItem>
                 )
               })}
-              {canReadMail && !sidebarCollapsed && !labels.isLoading && labelItems.length === 0 && <div className="px-2 py-1 text-xs text-muted-foreground">暂无标签</div>}
+              {canReadMail && !sidebarCollapsed && !labels.isLoading && !labels.isError && labelItems.length === 0 && <div className="px-2 py-1 text-xs text-muted-foreground">暂无标签</div>}
               {canManageCurrentMailboxLabels && labelEditMode && newLabelEditing && (
                 <SidebarMenuItem>
                   <NewLabelButton collapsed={sidebarCollapsed} pending={createLabel.isPending} onCreate={(name) => { createLabel.mutate(name); setNewLabelEditing(false) }} editing={newLabelEditing} onEditingChange={setNewLabelEditing} />
@@ -1487,9 +1587,38 @@ export function MailPage() {
               )}
             </SidebarMenu>
             {labels.isLoading && <FolderSkeleton />}
-          </SidebarGroupContent>
+            {!sidebarCollapsed && labels.isError && <SidebarQueryFailure label="标签读取失败" onRetry={() => { void labels.refetch() }} />}
+          </SidebarGroupContent>}
         </SidebarGroup>}
       </SidebarContent>
+      <SidebarContextMenu
+        state={sidebarContextMenu}
+        canCreate={canManageFolders}
+        canReorder={canOrganizeCurrentMailbox}
+        canDelete={canManageFolders}
+        pending={reorderFolders.isPending || deleteFolder.isPending}
+        onClose={closeSidebarContextMenu}
+        onOpen={(item) => {
+          closeSidebarContextMenu()
+          activateSidebarItem(item)
+        }}
+        onRefresh={() => {
+          closeSidebarContextMenu()
+          void refreshMailData()
+        }}
+        onCreateFolder={() => {
+          closeSidebarContextMenu()
+          runAfterClosingMobileSidebar(() => setFolderDialogOpen(true))
+        }}
+        onMove={(item, action) => {
+          closeSidebarContextMenu()
+          moveSidebarFolder(item, action)
+        }}
+        onDelete={(item) => {
+          closeSidebarContextMenu()
+          runAfterClosingMobileSidebar(() => confirmDeleteFolder(item))
+        }}
+      />
     </Sidebar>
   )
 
@@ -1513,8 +1642,12 @@ export function MailPage() {
     <PermissionEmptyState title="无邮箱前台权限" description="当前账号未开启邮箱前台访问权限。" onOpenSettings={openSettings} />
   ) : !canReadMail ? (
     <PermissionEmptyState title="无邮件查看权限" description="当前账号可以访问邮箱前台，但未开启邮件查看权限。" onOpenSettings={openSettings} />
+  ) : mailboxList.isError ? (
+    <MailQueryFailure error={mailboxList.error} onRetry={() => { void mailboxList.refetch() }} />
   ) : !mailboxList.isLoading && !hasMailboxes && mailView !== "unknown" ? (
     <NoMailboxState onManageMailboxes={() => navigate("/profile?tab=mailboxes")} />
+  ) : mailView === "scheduled" && scheduledSends.isError ? (
+    <MailQueryFailure error={scheduledSends.error} onRetry={() => { void scheduledSends.refetch() }} />
   ) : mailView === "scheduled" && canScheduleMail ? (
     <ScheduledSendView
       compact={compactMailLayout}
@@ -1527,6 +1660,8 @@ export function MailPage() {
     />
   ) : mailView === "scheduled" ? (
     <PermissionEmptyState title="无定时发送权限" description="当前账号不能查看或管理定时发送任务。" onOpenSettings={openSettings} />
+  ) : mailView === "sendQueue" && sendQueue.isError ? (
+    <MailQueryFailure error={sendQueue.error} onRetry={() => { void sendQueue.refetch() }} />
   ) : mailView === "sendQueue" && canViewSendQueue ? (
     <SendQueueView
       compact={compactMailLayout}
@@ -1552,9 +1687,13 @@ export function MailPage() {
     />
   ) : mailView === "sendQueue" ? (
     <PermissionEmptyState title="无发送队列权限" description="当前账号不能查看发送队列。" onOpenSettings={openSettings} />
+  ) : mailMessagesError ? (
+    <MailQueryFailure error={mailMessagesError} onRetry={() => { void refetchMessages() }} />
   ) : compactMailLayout ? (
     <CompactMailView
+      key={`${mailView}:${mailView === "folder" ? folder : mailView === "label" ? selectedLabelId : selectedExternalAccountId}`}
       title={viewTitle}
+      currentFolder={mailView === "folder" ? folder : undefined}
       icon={mailView === "label" && selectedLabel ? <Badge variant="outline" className="gap-1.5 rounded-md font-normal"><span className="h-2 w-2 shrink-0 rounded-full" style={{ backgroundColor: labelDotColor(selectedLabel) }} />{selectedLabel.name}</Badge> : undefined}
       messages={visibleMessages}
       total={allMessages.length}
@@ -1569,6 +1708,8 @@ export function MailPage() {
       selectedId={selectedId}
       selected={selected}
       detailLoading={detail.isLoading}
+      detailError={detail.error}
+      onRetryDetail={() => { void detail.refetch() }}
       labels={labelItems}
       labelPending={addLabel.isPending || removeLabel.isPending}
       onSelect={openMessage}
@@ -1661,12 +1802,12 @@ export function MailPage() {
           {selectedCountOnPage > 0 && canOrganizeMail && mailView !== "unknown" && (
             <div className="flex min-h-10 shrink-0 items-center gap-3 border-b px-3 py-1.5">
               <span className="shrink-0 text-[13px] text-muted-foreground">已选 {selectedCountOnPage} 封</span>
-              <BulkActionToolbar pending={bulkPending} currentFolder={folder} folders={folders.data?.items || []} readAction={bulkReadAction} onAction={runBulkAction} onMoveToFolder={runBulkMoveToFolder} />
+              <BulkActionToolbar pending={bulkPending} currentFolder={mailView === "folder" ? folder : undefined} folders={folders.data?.items || []} readAction={bulkReadAction} onAction={runBulkAction} onMoveToFolder={runBulkMoveToFolder} />
             </div>
           )}
           <ScrollArea className="min-h-0 flex-1">
             {mailMessagesLoading && <MessageSkeleton />}
-            {visibleMessages.map((m) => <MessageRow key={m.id} message={m} active={selectedId === m.id} checked={compactSelectedIds.includes(m.id)} scheduled={scheduledDraftIds.has(m.id)} onCheckedChange={(checked) => toggleCompactSelect(m.id, checked)} onClick={() => openMessage(m.id)} onContextMenu={(event) => openMessageContextMenu(event, m)} onStar={() => star.mutate({ id: m.id, starred: !m.isStarred })} onArchive={() => move.mutate({ id: m.id, folder: m.folder === "Archive" ? "Inbox" : "Archive" })} onTrash={() => move.mutate({ id: m.id, folder: "Trash" })} onToggleRead={() => markRead.mutate({ id: m.id, read: !m.isRead })} canOrganize={canOrganizeMail && mailView !== "unknown"} />)}
+            {visibleMessages.map((m) => <MessageRow key={m.id} message={m} active={selectedId === m.id} checked={compactSelectedIds.includes(m.id)} scheduled={scheduledDraftIds.has(m.id)} onCheckedChange={(checked) => toggleCompactSelect(m.id, checked)} onClick={() => openMessage(m.id)} onContextMenu={(event) => openMessageContextMenu(event, m)} onStar={() => star.mutate({ id: m.id, starred: !m.isStarred })} onArchive={() => move.mutate({ id: m.id, folder: m.folder === "Archive" ? "Inbox" : "Archive" })} onTrash={() => m.folder === "Trash" ? confirmDeleteMessage(m) : move.mutate({ id: m.id, folder: "Trash" })} onToggleRead={() => markRead.mutate({ id: m.id, read: !m.isRead })} canOrganize={canOrganizeMail && mailView !== "unknown"} />)}
             {!mailMessagesLoading && visibleMessages.length === 0 && <div className="grid min-h-[170px] place-items-center px-8 py-12 text-center text-base text-muted-foreground">{emptyMessage}</div>}
             {!mailMessagesLoading && hasMoreMessages && (
               <div className="border-b p-4 text-center">
@@ -1690,7 +1831,8 @@ export function MailPage() {
             </div>
           )}
           {detail.isLoading && <div className="space-y-4 p-6"><Skeleton className="h-8 w-2/3" /><Skeleton className="h-4 w-1/3" /><Separator /><Skeleton className="h-40 w-full" /></div>}
-          {selected && <div className="flex h-full min-h-0 flex-col">
+          {detail.isError && <MailDetailFailure error={detail.error} onRetry={() => { void detail.refetch() }} />}
+          {!detail.isError && selected && <div className="flex h-full min-h-0 flex-col">
             <div className="border-b p-5">
               {isTwoPaneMailViewport && (
                 <Button variant="ghost" size="sm" className="-ml-2 mb-3 h-8 px-2 text-[13px] font-normal" onClick={() => setSelectedId(null)}>
@@ -1709,7 +1851,7 @@ export function MailPage() {
                   ) : (
                     <Button variant="outline" size="sm" onClick={() => move.mutate({ id: selected.id, folder: "Archive" })}>归档</Button>
                   ))}
-                  {mailView !== "external" && mailView !== "unknown" && canOrganizeMail && <Button variant="destructive" size="sm" onClick={() => confirmDeleteMessage(selected)}>删除</Button>}
+                  {mailView !== "external" && mailView !== "unknown" && canOrganizeMail && <Button variant="destructive" size="sm" onClick={() => confirmDeleteMessage(selected)}>{selected.folder === "Trash" ? "永久删除" : "移入已删除"}</Button>}
                 </div>
               </div>
               <MessageMetaPanel
@@ -1773,7 +1915,9 @@ export function MailPage() {
       <SendQueueAuditDialog
         open={!!sendQueueAuditId}
         loading={sendQueueAudit.isLoading}
+        error={sendQueueAudit.error}
         events={sendQueueAudit.data?.items || []}
+        onRetry={() => { void sendQueueAudit.refetch() }}
         onOpenChange={(open) => { if (!open) setSendQueueAuditId("") }}
       />
       <MessageContextMenu
@@ -1795,39 +1939,11 @@ export function MailPage() {
           active ? removeLabel.mutate({ id: message.id, labelId: label.id }) : addLabel.mutate({ id: message.id, label })
         }}
       />
-      <SidebarContextMenu
-        state={sidebarContextMenu}
-        canCreate={canManageFolders}
-        canReorder={canOrganizeCurrentMailbox}
-        canDelete={canManageFolders}
-        pending={reorderFolders.isPending || deleteFolder.isPending}
-        onClose={closeSidebarContextMenu}
-        onOpen={(item) => {
-          closeSidebarContextMenu()
-          activateSidebarItem(item)
-        }}
-        onRefresh={() => {
-          closeSidebarContextMenu()
-          void refreshMailData()
-        }}
-        onCreateFolder={() => {
-          closeSidebarContextMenu()
-          setFolderDialogOpen(true)
-        }}
-        onMove={(item, action) => {
-          closeSidebarContextMenu()
-          moveSidebarFolder(item, action)
-        }}
-        onDelete={(item) => {
-          closeSidebarContextMenu()
-          confirmDeleteFolder(item)
-        }}
-      />
       <CreateFolderDialog
         open={folderDialogOpen}
         pending={createFolder.isPending}
         onOpenChange={setFolderDialogOpen}
-        onCreate={(name) => createFolder.mutate(name)}
+        onCreate={(payload) => createFolder.mutate(payload)}
       />
       <ConfirmDialog
         open={!!pendingConfirm}
@@ -1835,7 +1951,7 @@ export function MailPage() {
         description={pendingConfirm?.description}
         confirmText={pendingConfirm?.confirmText || "确认"}
         destructive
-        pending={del.isPending || bulkPending}
+        pending={del.isPending || bulkPending || deleteFolder.isPending}
         onOpenChange={(open) => { if (!open) setPendingConfirm(null) }}
         onConfirm={() => pendingConfirm?.onConfirm()}
       />
@@ -1845,7 +1961,7 @@ export function MailPage() {
 
 function buildMailMenuItems(folders: MailFolder[], starredCount: number, scheduledCount: number, includeScheduled: boolean, sendQueueCount: number, includeSendQueue: boolean, includeUnknown: boolean): MailMenuItem[] {
   const byName = new Map(folders.map((item) => [item.name, item]))
-  const normalizedFolders = ["Inbox", "Drafts", "Sent", "Archive", "Spam", "Trash"].map((name) => byName.get(name) || { id: `virtual-${name}`, name, role: name.toLowerCase(), sortOrder: 0, unreadCount: 0, totalCount: 0, uidValidity: 0, uidNext: 1, highestModseq: 1 })
+  const normalizedFolders = ["Inbox", "Drafts", "Sent", "Archive", "Spam", "Trash"].map((name) => byName.get(name) || { id: `virtual-${name}`, name, role: name.toLowerCase(), icon: "folder", sortOrder: 0, unreadCount: 0, totalCount: 0, uidValidity: 0, uidNext: 1, highestModseq: 1 })
   for (const item of folders) {
     if (!normalizedFolders.some((folder) => folder.name === item.name)) normalizedFolders.push(item)
   }
@@ -1855,7 +1971,7 @@ function buildMailMenuItems(folders: MailFolder[], starredCount: number, schedul
     folderId: item.id,
     folderName: item.name,
     label: folderLabels[item.name] || item.name,
-    icon: isCustomMailFolder(item) ? <Folder className="h-4 w-4" /> : folderIcons[item.role] || <Inbox className="h-4 w-4" />,
+    icon: isCustomMailFolder(item) ? customFolderIcon(item.icon) : folderIcons[item.role] || <Inbox className="h-4 w-4" />,
     count: item.name === "Drafts" ? item.totalCount : item.unreadCount,
     custom: isCustomMailFolder(item),
     order: isCustomMailFolder(item) ? item.sortOrder || 100000 : menuAnchorOrder(item.name),
@@ -1875,6 +1991,13 @@ function isCustomMailFolder(folder: Pick<MailFolder, "name" | "id">) {
   return !folder.id.startsWith("virtual-") && !["inbox", "sent", "drafts", "archive", "spam", "trash"].includes(folder.name.trim().toLowerCase())
 }
 
+function customFolderIcon(iconKey: string | undefined, className = "h-4 w-4") {
+  if (iconKey?.startsWith("data:image/png;base64,")) return <img src={iconKey} alt="" className={cn("shrink-0 object-contain", className)} />
+  const option = customFolderIconOptions.find((item) => item.key === iconKey) || customFolderIconOptions[0]
+  const Icon = option.icon
+  return <Icon className={className} />
+}
+
 function compareMailFolders(a: MailFolder, b: MailFolder) {
   return (isCustomMailFolder(a) ? a.sortOrder || 100000 : menuAnchorOrder(a.name)) - (isCustomMailFolder(b) ? b.sortOrder || 100000 : menuAnchorOrder(b.name)) || a.name.localeCompare(b.name)
 }
@@ -2143,6 +2266,45 @@ function PermissionEmptyState({ title, description, onOpenSettings }: { title: s
   )
 }
 
+function MailQueryFailure({ error, onRetry }: { error: Error; onRetry: () => void }) {
+  return (
+    <div className="grid min-h-0 flex-1 place-items-center p-6" role="alert">
+      <div className="w-full max-w-md rounded-lg border border-destructive/40 bg-destructive/5 p-8 text-center">
+        <div className="text-lg font-semibold text-destructive">邮件数据读取失败</div>
+        <div className="mt-2 break-words text-sm text-muted-foreground">{error.message || "请检查网络连接后重试"}</div>
+        <Button type="button" variant="outline" className="mt-5" onClick={onRetry}>
+          <RefreshCcw className="h-4 w-4" />重新读取
+        </Button>
+      </div>
+    </div>
+  )
+}
+
+function MailDetailFailure({ error, onRetry }: { error: Error; onRetry: () => void }) {
+  return (
+    <div className="grid h-full min-h-[240px] place-items-center p-6" role="alert">
+      <div className="max-w-md text-center">
+        <div className="font-semibold text-destructive">邮件详情读取失败</div>
+        <div className="mt-2 break-words text-sm text-muted-foreground">{error.message || "请检查网络连接后重试"}</div>
+        <Button type="button" variant="outline" size="sm" className="mt-4" onClick={onRetry}>
+          <RefreshCcw className="h-4 w-4" />重新读取
+        </Button>
+      </div>
+    </div>
+  )
+}
+
+function SidebarQueryFailure({ label, onRetry }: { label: string; onRetry: () => void }) {
+  return (
+    <div className="mx-2 my-1 flex min-h-8 items-center gap-2 rounded-md border border-destructive/30 bg-destructive/5 px-2 text-xs text-destructive" role="alert">
+      <span className="min-w-0 flex-1 truncate">{label}</span>
+      <Button type="button" variant="ghost" size="icon" className="h-6 w-6 shrink-0 text-destructive hover:text-destructive" aria-label={`重试${label}`} title="重新读取" onClick={onRetry}>
+        <RefreshCcw className="h-3.5 w-3.5" />
+      </Button>
+    </div>
+  )
+}
+
 function ScheduledSendView({ compact, items, total, loading, query, cancelingId, onCancel }: { compact: boolean; items: ScheduledSend[]; total: number; loading: boolean; query: string; cancelingId: string; onCancel: (item: ScheduledSend) => void }) {
   const empty = query.trim() ? "当前搜索没有匹配的定时邮件" : "没有待发送邮件"
   return (
@@ -2378,7 +2540,7 @@ function SendQueueStatusBadge({ status }: { status: SendQueueStatus }) {
   )
 }
 
-function SendQueueAuditDialog({ open, loading, events, onOpenChange }: { open: boolean; loading: boolean; events: SendQueueAuditEvent[]; onOpenChange: (open: boolean) => void }) {
+function SendQueueAuditDialog({ open, loading, error, events, onRetry, onOpenChange }: { open: boolean; loading: boolean; error: Error | null; events: SendQueueAuditEvent[]; onRetry: () => void; onOpenChange: (open: boolean) => void }) {
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent className="w-[min(92vw,42rem)] max-w-none">
@@ -2387,8 +2549,9 @@ function SendQueueAuditDialog({ open, loading, events, onOpenChange }: { open: b
         </DialogHeader>
         <div className="max-h-[60vh] overflow-auto pr-1">
           {loading && <div className="space-y-3">{Array.from({ length: 4 }).map((_, index) => <Skeleton key={index} className="h-14 w-full" />)}</div>}
-          {!loading && events.length === 0 && <div className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">暂无投递事件</div>}
-          {!loading && events.length > 0 && (
+          {!loading && error && <div className="rounded-lg border border-destructive/40 bg-destructive/5 p-6 text-center" role="alert"><div className="text-sm font-medium text-destructive">投递记录读取失败</div><div className="mt-1 break-words text-xs text-muted-foreground">{error.message}</div><Button type="button" variant="outline" size="sm" className="mt-4" onClick={onRetry}><RefreshCcw className="h-4 w-4" />重新读取</Button></div>}
+          {!loading && !error && events.length === 0 && <div className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">暂无投递事件</div>}
+          {!loading && !error && events.length > 0 && (
             <div className="space-y-3">
               {events.map((event) => (
                 <div key={event.id} className="rounded-lg border p-3">
@@ -2435,6 +2598,7 @@ type BulkAction = "read" | "unread" | "star" | "unstar" | "archive" | "inbox" |
 
 function BulkActionToolbar({ pending, currentFolder, folders = [], readAction = "read", onAction, onMoveToFolder }: { pending: boolean; currentFolder?: string; folders?: MailFolder[]; readAction?: "read" | "unread"; onAction: (action: BulkAction) => void; onMoveToFolder?: (folderName: string) => void }) {
   const buttonClass = "h-7 w-7 rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+  const permanentlyDelete = currentFolder === "Trash"
   const archiveAction: BulkAction = currentFolder === "Archive" ? "inbox" : "archive"
   const archiveLabel = currentFolder === "Archive" ? "移回收件箱" : "归档"
   const movableFolders = folders.filter((folder) => folder.name !== currentFolder && folder.name !== "Drafts")
@@ -2456,14 +2620,14 @@ function BulkActionToolbar({ pending, currentFolder, folders = [], readAction =
           <DropdownMenuContent align="end" className="w-44">
             {movableFolders.map((folder) => (
               <DropdownMenuItem key={folder.id} onSelect={() => onMoveToFolder(folder.name)}>
-                {folderIcons[folder.role] || <Folder className="h-4 w-4" />}
+                {isCustomMailFolder(folder) ? customFolderIcon(folder.icon) : folderIcons[folder.role] || <Folder className="h-4 w-4" />}
                 <span className="min-w-0 flex-1 truncate">{folderLabels[folder.name] || folder.name}</span>
               </DropdownMenuItem>
             ))}
           </DropdownMenuContent>
         </DropdownMenu>
       )}
-      <Button type="button" variant="ghost" size="icon" className={cn(buttonClass, "text-destructive hover:bg-destructive/10 hover:text-destructive")} disabled={pending} onClick={() => onAction("trash")} title="移入已删除" aria-label="移入已删除">
+      <Button type="button" variant="ghost" size="icon" className={cn(buttonClass, "text-destructive hover:bg-destructive/10 hover:text-destructive")} disabled={pending} onClick={() => onAction(permanentlyDelete ? "delete" : "trash")} title={permanentlyDelete ? "永久删除" : "移入已删除"} aria-label={permanentlyDelete ? "永久删除" : "移入已删除"}>
         <Trash2 className="h-3.5 w-3.5" />
       </Button>
     </div>
@@ -2510,7 +2674,7 @@ function SidebarContextMenu({ state, canCreate, canReorder, canDelete, pending,
       </Button>
       {canCreate && (
         <Button type="button" variant="ghost" className={itemClass} onClick={onCreateFolder}>
-          <Plus className="h-4 w-4" />新建文件夹
+          新建文件夹
         </Button>
       )}
       {customFolder && (canReorder || canDelete) && (
@@ -2616,7 +2780,7 @@ function MessageContextMenu({ state, labels, folders, canSend, canOrganize, canM
           <div className="max-h-44 overflow-y-auto">
             {movableFolders.map((folder) => (
               <Button key={folder.id} type="button" variant="ghost" className={itemClass} onClick={() => moveToFolder(folder.name)}>
-                {folderIcons[folder.role] || <Inbox className="h-4 w-4" />}
+                {isCustomMailFolder(folder) ? customFolderIcon(folder.icon) : folderIcons[folder.role] || <Inbox className="h-4 w-4" />}
                 <span className="min-w-0 flex-1 truncate text-left">{folderLabels[folder.name] || folder.name}</span>
                 {folder.totalCount > 0 && <span className="text-xs text-muted-foreground">{folder.totalCount}</span>}
               </Button>
@@ -2645,7 +2809,7 @@ function MessageContextMenu({ state, labels, folders, canSend, canOrganize, canM
       {canOrganize && (
         <>
           <div className="-mx-1 my-1 h-px bg-border" />
-          {item("删除", <Trash2 className="h-4 w-4" />, "delete", true)}
+          {item(message.folder === "Trash" ? "永久删除" : "移入已删除", <Trash2 className="h-4 w-4" />, "delete", true)}
         </>
       )}
     </div>
@@ -2661,12 +2825,21 @@ function contextMenuPosition(x: number, y: number) {
   return { x: Math.min(Math.max(x, padding), maxX), y: Math.min(Math.max(y, padding), maxY) }
 }
 
-function CreateFolderDialog({ open, pending, onOpenChange, onCreate }: { open: boolean; pending: boolean; onOpenChange: (open: boolean) => void; onCreate: (name: string) => void }) {
+function CreateFolderDialog({ open, pending, onOpenChange, onCreate }: { open: boolean; pending: boolean; onOpenChange: (open: boolean) => void; onCreate: (payload: { name: string; icon: string }) => void }) {
   const [name, setName] = React.useState("")
+  const [icon, setIcon] = React.useState("auto")
+  const [uploadError, setUploadError] = React.useState("")
+  const iconInputRef = React.useRef<HTMLInputElement>(null)
   React.useEffect(() => {
-    if (open) setName("")
+    if (open) {
+      setName("")
+      setIcon("auto")
+      setUploadError("")
+    }
   }, [open])
   const trimmed = name.trim()
+  const suggestedIcon = suggestedFolderIcon(trimmed)
+  const resolvedIcon = icon === "auto" ? suggestedIcon : icon
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent className="w-[min(92vw,28rem)] max-w-none">
@@ -2677,13 +2850,51 @@ function CreateFolderDialog({ open, pending, onOpenChange, onCreate }: { open: b
           className="space-y-4"
           onSubmit={(event) => {
             event.preventDefault()
-            if (trimmed) onCreate(trimmed)
+            if (trimmed) onCreate({ name: trimmed, icon: resolvedIcon })
           }}
         >
           <div className="space-y-2">
             <Label htmlFor="new-folder-name">文件夹名称</Label>
             <Input id="new-folder-name" autoFocus value={name} onChange={(event) => setName(event.target.value)} placeholder="例如：客户、账单、项目归档" />
           </div>
+          <fieldset className="space-y-2">
+            <legend className="text-sm font-medium">图标</legend>
+            <div className="grid grid-cols-7 gap-2">
+              <Button type="button" variant="outline" size="icon" className={cn("relative size-10 shadow-none", icon === "auto" && "border-primary bg-primary/10 text-primary ring-1 ring-primary")} onClick={() => setIcon("auto")} aria-label={`自动匹配：${customFolderIconOptions.find((item) => item.key === suggestedIcon)?.label || "文件夹"}`} title={`自动匹配：${customFolderIconOptions.find((item) => item.key === suggestedIcon)?.label || "文件夹"}`} aria-pressed={icon === "auto"}>
+                {customFolderIcon(suggestedIcon)}
+                <Sparkles className="absolute -right-1 -top-1 h-3 w-3 rounded-full bg-background" />
+              </Button>
+              {customFolderIconOptions.map((option) => {
+                const Icon = option.icon
+                return (
+                  <Button key={option.key} type="button" variant="outline" size="icon" className={cn("size-10 shadow-none", icon === option.key && "border-primary bg-primary/10 text-primary ring-1 ring-primary")} onClick={() => setIcon(option.key)} aria-label={option.label} title={option.label} aria-pressed={icon === option.key}>
+                    <Icon className="h-4 w-4" />
+                  </Button>
+                )
+              })}
+              <Button type="button" variant="outline" size="icon" className={cn("size-10 shadow-none", icon.startsWith("data:image/png;base64,") && "border-primary bg-primary/10 text-primary ring-1 ring-primary")} onClick={() => iconInputRef.current?.click()} aria-label="上传自定义图标" title="上传自定义图标" aria-pressed={icon.startsWith("data:image/png;base64,")}>
+                {icon.startsWith("data:image/png;base64,") ? customFolderIcon(icon) : <Upload className="h-4 w-4" />}
+              </Button>
+              <input
+                ref={iconInputRef}
+                type="file"
+                accept="image/png,image/jpeg,image/webp"
+                className="hidden"
+                onChange={async (event) => {
+                  const file = event.target.files?.[0]
+                  event.target.value = ""
+                  if (!file) return
+                  try {
+                    setUploadError("")
+                    setIcon(await prepareFolderIcon(file))
+                  } catch (error) {
+                    setUploadError(error instanceof Error ? error.message : "无法处理该图片")
+                  }
+                }}
+              />
+            </div>
+            {uploadError && <p role="alert" className="text-xs text-destructive">{uploadError}</p>}
+          </fieldset>
           <DialogFooter className="gap-2">
             <Button type="button" variant="outline" onClick={() => onOpenChange(false)}>取消</Button>
             <Button disabled={!trimmed || pending}>{pending ? "创建中..." : "创建"}</Button>
@@ -2696,6 +2907,7 @@ function CreateFolderDialog({ open, pending, onOpenChange, onCreate }: { open: b
 
 function CompactMailView({
   title,
+  currentFolder,
   icon,
   messages,
   total,
@@ -2709,6 +2921,7 @@ function CompactMailView({
   selectedId,
   selected,
   detailLoading,
+  detailError,
   labels,
   labelPending,
   onSelect,
@@ -2716,6 +2929,7 @@ function CompactMailView({
   onToggleSelected,
   scheduledDraftIds,
   onLoadMore,
+  onRetryDetail,
   onCloseReader,
   onStar,
   onReply,
@@ -2737,6 +2951,7 @@ function CompactMailView({
   tools,
 }: {
   title: string
+  currentFolder?: string
   icon?: React.ReactNode
   messages: MailMessage[]
   total: number
@@ -2750,6 +2965,7 @@ function CompactMailView({
   selectedId: string | null
   selected?: MailMessage
   detailLoading: boolean
+  detailError: Error | null
   labels: MailLabel[]
   labelPending: boolean
   onSelect: (id: string | null) => void
@@ -2757,6 +2973,7 @@ function CompactMailView({
   onToggleSelected: (id: string, checked: boolean) => void
   scheduledDraftIds: Set<string>
   onLoadMore: () => void
+  onRetryDetail: () => void
   onCloseReader: () => void
   onStar: (message: MailMessage) => void
   onReply: (message: MailMessage) => void
@@ -2786,11 +3003,13 @@ function CompactMailView({
       <CompactMessageDetail
         selected={selected}
         loading={detailLoading}
+        error={detailError}
         labels={labels}
         labelPending={labelPending}
         previousMessage={previousMessage}
         nextMessage={nextMessage}
         onBack={onCloseReader}
+        onRetry={onRetryDetail}
         onSelect={onSelect}
         onStar={onStar}
         onReply={onReply}
@@ -2824,7 +3043,7 @@ function CompactMailView({
           {selectedIds.length > 0 ? (
             <>
               <span className="hidden text-xs text-muted-foreground min-[380px]:inline">已选 {selectedIds.length} 封</span>
-              {canOrganize && <BulkActionToolbar pending={bulkPending} onAction={onBulkAction} />}
+              {canOrganize && <BulkActionToolbar pending={bulkPending} currentFolder={currentFolder} onAction={onBulkAction} />}
             </>
           ) : (
             <div className="flex items-center gap-1">
@@ -2853,11 +3072,13 @@ function CompactMailView({
 function CompactMessageDetail({
   selected,
   loading,
+  error,
   labels,
   labelPending,
   previousMessage,
   nextMessage,
   onBack,
+  onRetry,
   onSelect,
   onStar,
   onReply,
@@ -2876,11 +3097,13 @@ function CompactMessageDetail({
 }: {
   selected?: MailMessage
   loading: boolean
+  error: Error | null
   labels: MailLabel[]
   labelPending: boolean
   previousMessage?: MailMessage
   nextMessage?: MailMessage
   onBack: () => void
+  onRetry: () => void
   onSelect: (id: string | null) => void
   onStar: (message: MailMessage) => void
   onReply: (message: MailMessage) => void
@@ -2931,7 +3154,7 @@ function CompactMessageDetail({
                     {canOrganize && <DropdownMenuItem onSelect={() => onStar(selected)}><Star className={cn("h-4 w-4", selected.isStarred && "fill-yellow-400 text-yellow-500")} />{selected.isStarred ? "取消星标" : "添加星标"}</DropdownMenuItem>}
                   </>
                 )}
-                {canOrganize && <DropdownMenuItem onSelect={() => onDelete(selected)} className="text-destructive"><Trash2 className="h-4 w-4" />删除</DropdownMenuItem>}
+                {canOrganize && <DropdownMenuItem onSelect={() => onDelete(selected)} className="text-destructive"><Trash2 className="h-4 w-4" />{selected.folder === "Trash" ? "永久删除" : "移入已删除"}</DropdownMenuItem>}
               </DropdownMenuContent>
             </DropdownMenu>
           )}
@@ -2951,7 +3174,7 @@ function CompactMessageDetail({
                 {selected && canOrganize && <Button variant="outline" size="sm" onClick={() => onStar(selected)}><Star className={cn("h-4 w-4", selected.isStarred && "fill-yellow-400 text-yellow-500")} />{selected.isStarred ? "取消星标" : "添加星标"}</Button>}
               </>
             )}
-            {selected && canOrganize && <Button variant="outline" size="sm" onClick={() => onDelete(selected)}><Trash2 className="h-4 w-4" />删除</Button>}
+            {selected && canOrganize && <Button variant="outline" size="sm" onClick={() => onDelete(selected)}><Trash2 className="h-4 w-4" />{selected.folder === "Trash" ? "永久删除" : "移入已删除"}</Button>}
           </div>
           <div className="flex items-center gap-2">
             <Button variant="ghost" size="sm" disabled={!previousMessage} onClick={() => previousMessage && onSelect(previousMessage.id)}>上一封</Button>
@@ -2960,8 +3183,9 @@ function CompactMessageDetail({
         </div>
       </div>
         {loading && <div className="space-y-4 p-8"><Skeleton className="h-8 w-2/3" /><Skeleton className="h-4 w-1/3" /><Separator /><Skeleton className="h-64 w-full" /></div>}
-        {!loading && !selected && <div className="grid flex-1 place-items-center text-sm text-muted-foreground">邮件不存在</div>}
-        {selected && (
+        {!loading && error && <MailDetailFailure error={error} onRetry={onRetry} />}
+        {!loading && !error && !selected && <div className="grid flex-1 place-items-center text-sm text-muted-foreground">邮件不存在</div>}
+        {!error && selected && (
           <ScrollArea className="min-h-0 flex-1">
             <div className="w-full px-4 py-4 sm:px-8 sm:py-6">
               <div className="space-y-5 border-b pb-5">
@@ -2990,23 +3214,41 @@ function CompactMessageDetail({
 
 
 function TranslatableMailBody({ message, language }: { message: MailMessage; language: Language }) {
+  const qc = useQueryClient()
   const [translatedText, setTranslatedText] = React.useState("")
   const [translatedHtml, setTranslatedHtml] = React.useState("")
   const [showTranslated, setShowTranslated] = React.useState(false)
   const [truncated, setTruncated] = React.useState(false)
+  const [autoTranslate, setAutoTranslate] = React.useState(() => {
+    try {
+      return window.localStorage.getItem("newszxcn.mail.auto-translate") !== "false"
+    } catch {
+      return true
+    }
+  })
   const { toast } = useToast()
   const targetLanguage = normalizeTranslationLanguage(language)
   const sourceText = React.useMemo(() => (message.bodyText || stripHtml(message.bodyHtml || message.snippet || "")).trim(), [message.bodyHtml, message.bodyText, message.snippet])
   const shouldShow = targetLanguage && (message.externalAccountId || message.mailboxId) && shouldOfferMessageTranslation(sourceText, language)
+  const translationKey = React.useMemo(() => ["mail-translation", message.externalAccountId || "local", message.id, targetLanguage] as const, [message.externalAccountId, message.id, targetLanguage])
   const translatedMessage = React.useMemo<MailMessage>(() => ({ ...message, bodyText: translatedText, bodyHtml: translatedHtml }), [message, translatedHtml, translatedText])
+  const applyTranslation = React.useCallback((result: Awaited<ReturnType<typeof api.translateMessage>>, display = true) => {
+    setTranslatedText(result.translatedText)
+    setTranslatedHtml(result.translatedHtml || "")
+    setTruncated(result.truncated)
+    setShowTranslated(display)
+  }, [])
   const translate = useMutation({
-    mutationFn: () => message.externalAccountId ? api.translateExternalMessage(message.externalAccountId, message.id, targetLanguage!) : api.translateMessage(message.id, targetLanguage!),
-    onSuccess: (result) => {
-      setTranslatedText(result.translatedText)
-      setTranslatedHtml(result.translatedHtml || "")
-      setTruncated(result.truncated)
-      setShowTranslated(true)
+    mutationFn: async ({ force = false }: { force?: boolean } = {}) => {
+      if (!force) {
+        const cached = qc.getQueryData<Awaited<ReturnType<typeof api.translateMessage>>>(translationKey)
+        if (cached) return cached
+      }
+      const result = message.externalAccountId ? await api.translateExternalMessage(message.externalAccountId, message.id, targetLanguage!) : await api.translateMessage(message.id, targetLanguage!)
+      qc.setQueryData(translationKey, result)
+      return result
     },
+    onSuccess: (result) => applyTranslation(result),
     onError: (error) => toast({ title: "翻译失败", description: error instanceof Error ? error.message : "请稍后重试" }),
   })
 
@@ -3016,8 +3258,30 @@ function TranslatableMailBody({ message, language }: { message: MailMessage; lan
     setShowTranslated(false)
     setTruncated(false)
     translate.reset()
+    const cached = qc.getQueryData<Awaited<ReturnType<typeof api.translateMessage>>>(translationKey)
+    if (cached) applyTranslation(cached, autoTranslate)
   }, [message.id, language])
 
+  React.useEffect(() => {
+    if (!autoTranslate || !shouldShow || translate.isPending) return
+    const cached = qc.getQueryData<Awaited<ReturnType<typeof api.translateMessage>>>(translationKey)
+    if (cached) {
+      applyTranslation(cached)
+      return
+    }
+    translate.mutate({ force: false })
+  }, [autoTranslate, message.id, shouldShow, targetLanguage])
+
+  const changeAutoTranslate = (checked: boolean) => {
+    setAutoTranslate(checked)
+    if (!checked) setShowTranslated(false)
+    try {
+      window.localStorage.setItem("newszxcn.mail.auto-translate", String(checked))
+    } catch {
+      // Keep the setting for this session when browser storage is unavailable.
+    }
+  }
+
   return (
     <>
       {(shouldShow || translatedText) && (
@@ -3028,8 +3292,12 @@ function TranslatableMailBody({ message, language }: { message: MailMessage; lan
               {truncated && <span className="ml-1">（内容较长，仅翻译前半部分）</span>}
             </div>
             <div className="flex items-center gap-2">
+              <label className="flex cursor-pointer items-center gap-2 whitespace-nowrap text-xs text-muted-foreground">
+                <Switch checked={autoTranslate} onCheckedChange={changeAutoTranslate} aria-label="自动翻译邮件" />
+                自动翻译
+              </label>
               {translatedText && <Button type="button" variant="ghost" size="sm" onClick={() => setShowTranslated((value) => !value)}>{showTranslated ? "显示原文" : "显示译文"}</Button>}
-              <Button type="button" variant="outline" size="sm" disabled={translate.isPending} onClick={() => translate.mutate()}>{translate.isPending ? "翻译中..." : translatedText ? "重新翻译" : "翻译"}</Button>
+              <Button type="button" variant="outline" size="sm" disabled={translate.isPending} onClick={() => translate.mutate({ force: !!translatedText })}>{translate.isPending ? "翻译中..." : translatedText ? "重新翻译" : "翻译"}</Button>
             </div>
           </div>
         </div>
@@ -3197,7 +3465,6 @@ function NewLabelButton({ collapsed, pending, onCreate, editing, onEditingChange
   }
   return (
     <SidebarMenuButton className="text-muted-foreground" onClick={() => setEditingState(true)}>
-      <Plus className="h-4 w-4" />
       <span>新建标签</span>
     </SidebarMenuButton>
   )
@@ -3586,7 +3853,7 @@ function MessageRow({
                 <Button type="button" variant="ghost" size="icon" aria-label={archiveLabel} title={archiveLabel} className={quickButtonClass} onClick={(event) => { event.stopPropagation(); onArchive() }}>
                   <Archive className="h-3.5 w-3.5" />
                 </Button>
-                <Button type="button" variant="ghost" size="icon" aria-label="移入已删除" title="移入已删除" className={quickButtonClass} onClick={(event) => { event.stopPropagation(); onTrash() }}>
+                <Button type="button" variant="ghost" size="icon" aria-label={message.folder === "Trash" ? "永久删除" : "移入已删除"} title={message.folder === "Trash" ? "永久删除" : "移入已删除"} className={quickButtonClass} onClick={(event) => { event.stopPropagation(); onTrash() }}>
                   <Trash2 className="h-3.5 w-3.5" />
                 </Button>
                 <Button type="button" variant="ghost" size="icon" aria-label={message.isRead ? "标为未读" : "标为已读"} title={message.isRead ? "标为未读" : "标为已读"} className={quickButtonClass} onClick={(event) => { event.stopPropagation(); onToggleRead() }}>
@@ -3682,12 +3949,15 @@ function ComposeDialog({ mailboxes, mailbox, open, draft, limits, canSend, canMa
       return sent
     },
     onSuccess: async (_, payloads) => {
+      let draftDeleteFailed = false
       if (draftId) {
         try {
           await api.deleteDraft(draftId)
-        } catch {}
+        } catch {
+          draftDeleteFailed = true
+        }
       }
-      toast({ title: payloads.length > 1 ? `已分别发送 ${payloads.length} 封邮件` : "发送成功" })
+      toast({ title: payloads.length > 1 ? `已分别发送 ${payloads.length} 封邮件` : "发送成功", description: draftDeleteFailed ? "邮件已发送，但原草稿未能自动删除" : undefined })
       setFiles([])
       setDraftId("")
       onSent()
@@ -3952,6 +4222,14 @@ function ComposeDialog({ mailboxes, mailbox, open, draft, limits, canSend, canMa
             <ComposeField label="主　题">
               <Input name="subject" placeholder="输入主题" value={subjectValue} onChange={(event) => setSubjectValue(event.target.value)} className="h-10 flex-1 rounded-none border-0 px-0 shadow-none focus-visible:ring-0" />
             </ComposeField>
+            {defaultSignature.isError && (
+              <div className="flex items-center justify-between gap-3 border-b bg-destructive/5 px-4 py-2 text-xs text-destructive sm:px-6" role="alert">
+                <span>默认签名读取失败</span>
+                <Button type="button" variant="ghost" size="sm" className="h-7 text-destructive hover:text-destructive" onClick={() => { void defaultSignature.refetch() }}>
+                  <RefreshCcw className="h-3.5 w-3.5" />重新读取
+                </Button>
+              </div>
+            )}
             <MailBodyComposer
               defaultValue={composerText}
               defaultHtml={draft?.html}
@@ -4383,7 +4661,7 @@ function MailBodyComposer({ defaultValue, defaultHtml, files, signatureText, max
           <DropdownMenuContent align="start" className="w-64 p-2">
             <div className="grid grid-cols-8 gap-1">
               {composerEmojiOptions.map((emoji) => (
-                <Button key={emoji} type="button" variant="ghost" size="icon" className="h-8 w-8 rounded-md text-lg" onClick={() => insertEmoji(emoji)}>
+                <Button key={emoji} type="button" variant="ghost" size="icon" className="h-8 w-8 rounded-md text-lg" aria-label={`插入表情 ${emoji}`} title={`插入 ${emoji}`} onClick={() => insertEmoji(emoji)}>
                   {emoji}
                 </Button>
               ))}
@@ -4495,7 +4773,7 @@ function MailBodyComposer({ defaultValue, defaultHtml, files, signatureText, max
                 <Paperclip className="h-3.5 w-3.5" />
                 <span className="max-w-48 truncate">{file.name}</span>
                 <span className="text-muted-foreground">{formatBytes(file.size)}</span>
-                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 rounded-md" onClick={() => onRemoveFile(index)}>
+                <Button type="button" variant="ghost" size="icon" className="h-5 w-5 rounded-md" aria-label={`移除附件 ${file.name}`} title="移除附件" onClick={() => onRemoveFile(index)}>
                   <X className="h-3.5 w-3.5" />
                 </Button>
               </Badge>

apps/web/src/pages/not-found.tsx

@@ -4,7 +4,7 @@ import { Home, MailQuestion } from "lucide-react"
 
 export function NotFoundPage() {
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
+    <main className="grid min-h-screen place-items-center bg-background px-4">
       <div className="w-full max-w-sm text-center">
         <div className="mb-6 flex justify-center">
           <div className="flex h-20 w-20 items-center justify-center rounded-full bg-muted">
@@ -24,6 +24,6 @@ export function NotFoundPage() {
           </Button>
         </div>
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/pages/profile.tsx

@@ -3,7 +3,7 @@ import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { useNavigate, useSearchParams } from "react-router-dom"
 import { ArrowLeft, BarChart3, Ban, Bell, BellOff, BookOpen, ChevronDown, ChevronUp, Clock3, Code2, Contact, Copy, HardDrive, Image, Info, KeyRound, LogOut, Mail, MailCheck, MailX, Moon, PanelLeftOpen, PencilLine, PlayCircle, Plus, RefreshCcw, Search, SendHorizontal, Settings, ShieldCheck, SlidersHorizontal, Sun, Trash2, Users, X } from "lucide-react"
 import { QRCodeSVG } from "qrcode.react"
-import { api, APIToken, ExternalImapAccount, ExternalImapAccountPayload, ExternalImapFolder, ExternalImapOAuthProvider, ExternalImapStorageMode, ExternalImapSyncRun, ExternalImapTlsMode, ForwardingSettings, ForwardingVerifiedEmail, MailLabel, MailRule, MailRuleAction, MailRuleCondition, Mailbox, MailboxApplyOptions, MailSignature, MailStats, PermissionLimits } from "@/lib/api"
+import { api, APIToken, ExternalImapAccount, ExternalImapAccountPayload, ExternalImapFolder, ExternalImapOAuthProvider, ExternalImapStorageMode, ExternalImapSyncRun, ExternalImapTlsMode, ForwardingSettings, ForwardingVerifiedEmail, MailFolder, MailLabel, MailRule, MailRuleAction, MailRuleCondition, Mailbox, MailboxApplyOptions, MailSignature, MailStats, PermissionLimits } from "@/lib/api"
 import { cn, formatBytes } from "@/lib/utils"
 import { applyTheme, getInitialTheme } from "@/lib/theme"
 import { DisplayMode, useDisplayMode } from "@/lib/display-mode"
@@ -23,7 +23,7 @@ import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
 import { Checkbox } from "@/components/ui/checkbox"
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "@/components/ui/dialog"
 import { Sheet, SheetContent, SheetTitle, SheetTrigger } from "@/components/ui/sheet"
-import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select"
+import { Select, SelectContent, SelectGroup, SelectItem, SelectLabel, SelectSeparator, SelectTrigger, SelectValue } from "@/components/ui/select"
 import { Separator } from "@/components/ui/separator"
 import { ScrollArea } from "@/components/ui/scroll-area"
 import { ConfirmDialog } from "@/components/confirm-dialog"
@@ -32,6 +32,7 @@ import { useToast } from "@/hooks/use-toast"
 type Tab = "profile" | "mailboxes" | "contacts" | "cleanup" | "cleanupQueue" | "rules" | "blocked" | "stats" | "apiTokens"
 type AccountSettingsTab = "account" | "mail" | "clients" | "security"
 type PendingConfirm = { title: string; description?: string; confirmText: string; destructive?: boolean; onConfirm: () => void }
+type RetryableQuery = { isError: boolean; error: Error | null; refetch: () => Promise<unknown> }
 const tabs: Record<Tab, { label: string; icon: React.ReactNode }> = {
   profile: { label: "账号设置", icon: <Settings className="h-4 w-4" /> },
   mailboxes: { label: "邮箱管理", icon: <Mail className="h-4 w-4" /> },
@@ -178,7 +179,7 @@ export function ProfilePage() {
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["contacts"] }); toast({ title: "联系人已保存" }) },
     onError: (error) => toast({ title: "保存失败", description: error.message }),
   })
-  const deleteContact = useMutation({ mutationFn: api.deleteContact, onSuccess: () => { qc.invalidateQueries({ queryKey: ["contacts"] }); toast({ title: "联系人已删除" }) } })
+  const deleteContact = useMutation({ mutationFn: api.deleteContact, onSuccess: () => { qc.invalidateQueries({ queryKey: ["contacts"] }); toast({ title: "联系人已删除" }) }, onError: (error) => toast({ title: "删除失败", description: error.message }) })
   const createSignature = useMutation({
     mutationFn: (form: FormData) => api.createSignature({ mailboxId: String(form.get("mailboxId") || ""), name: String(form.get("name") || ""), content: String(form.get("content") || ""), isDefault: form.get("isDefault") === "on" }),
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["signatures"] }); qc.invalidateQueries({ queryKey: ["signature"] }); toast({ title: "签名已保存" }) },
@@ -194,7 +195,7 @@ export function ProfilePage() {
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["signatures"] }); qc.invalidateQueries({ queryKey: ["signature"] }); toast({ title: "默认签名已更新" }) },
     onError: (error) => toast({ title: "设置失败", description: error.message }),
   })
-  const deleteSignature = useMutation({ mutationFn: api.deleteSignature, onSuccess: () => { qc.invalidateQueries({ queryKey: ["signatures"] }); qc.invalidateQueries({ queryKey: ["signature"] }); toast({ title: "签名已删除" }) } })
+  const deleteSignature = useMutation({ mutationFn: api.deleteSignature, onSuccess: () => { qc.invalidateQueries({ queryKey: ["signatures"] }); qc.invalidateQueries({ queryKey: ["signature"] }); toast({ title: "签名已删除" }) }, onError: (error) => toast({ title: "删除失败", description: error.message }) })
   const createRule = useMutation({
     mutationFn: (payload: {
       mailboxId: string
@@ -216,7 +217,7 @@ export function ProfilePage() {
     },
     onError: (error) => toast({ title: "保存失败", description: error.message }),
   })
-  const deleteRule = useMutation({ mutationFn: api.deleteRule, onSuccess: () => { qc.invalidateQueries({ queryKey: ["rules"] }); toast({ title: "规则已删除" }) } })
+  const deleteRule = useMutation({ mutationFn: api.deleteRule, onSuccess: () => { qc.invalidateQueries({ queryKey: ["rules"] }); toast({ title: "规则已删除" }) }, onError: (error) => toast({ title: "删除失败", description: error.message }) })
   const updateRule = useMutation({
     mutationFn: ({ id, payload }: { id: string; payload: Partial<RuleCreatePayload> }) => api.updateRule(id, payload),
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["rules"] }); setRuleDialogOpen(false); toast({ title: "收件规则已更新" }) },
@@ -243,7 +244,7 @@ export function ProfilePage() {
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["blocked-senders"] }); toast({ title: "拦截规则已保存" }) },
     onError: (error) => toast({ title: "保存失败", description: error.message }),
   })
-  const deleteBlocked = useMutation({ mutationFn: api.deleteBlockedSender, onSuccess: () => { qc.invalidateQueries({ queryKey: ["blocked-senders"] }); toast({ title: "拦截规则已删除" }) } })
+  const deleteBlocked = useMutation({ mutationFn: api.deleteBlockedSender, onSuccess: () => { qc.invalidateQueries({ queryKey: ["blocked-senders"] }); toast({ title: "拦截规则已删除" }) }, onError: (error) => toast({ title: "删除失败", description: error.message }) })
   const createLabel = useMutation({
     mutationFn: (form: FormData) => api.createLabel({ mailboxId: activeMailboxId, name: String(form.get("name") || ""), color: String(form.get("color") || "") }),
     onSuccess: () => { qc.invalidateQueries({ queryKey: ["labels"] }); toast({ title: "标签已创建" }) },
@@ -433,6 +434,15 @@ export function ProfilePage() {
     </div>
   )
   function renderTab() {
+    const failedQueries = visibleTabQueries().filter((query) => query.isError && query.error)
+    if (failedQueries.length > 0) {
+      return (
+        <ProfileQueryFailure
+          errors={failedQueries.map((query) => query.error!)}
+          onRetry={() => { void Promise.all(failedQueries.map((query) => query.refetch())) }}
+        />
+      )
+    }
     if (tab === "profile") return (
       <AccountSettingsSection
         activeTab={accountTab}
@@ -506,6 +516,22 @@ export function ProfilePage() {
     if (tab === "apiTokens") return <ApiTokensSection items={apiTokens.data?.items || []} loading={apiTokens.isLoading} pending={createApiToken.isPending || updateApiToken.isPending || deleteApiToken.isPending} onCreate={(payload) => createApiToken.mutateAsync(payload)} onUpdate={(id, payload) => updateApiToken.mutate({ id, payload })} onDelete={(id) => deleteApiToken.mutate(id)} onCopy={copy} />
     return null
   }
+  function visibleTabQueries(): RetryableQuery[] {
+    if (tab === "profile") {
+      if (accountTab === "security") return []
+      if (accountTab === "account") return [mailboxes, accountStats]
+      if (accountTab === "mail") return [mailboxes, labels, signatures]
+      return [mailboxes, publicSettings]
+    }
+    if (tab === "mailboxes") return [mailboxes, mailboxApplyOptions, publicSettings, externalImapAccounts, externalRunFolders, externalSyncRuns]
+    if (tab === "contacts") return [contacts]
+    if (tab === "cleanup" || tab === "cleanupQueue") return [mailboxes, mailboxStats]
+    if (tab === "rules") return [mailboxes, rules, ruleForwarding, labels]
+    if (tab === "blocked") return [mailboxes, blocked, blockedStats]
+    if (tab === "stats") return [mailboxes, dashboardStats]
+    if (tab === "apiTokens") return [apiTokens]
+    return []
+  }
 }
 
 function contentFrameClass(tab: Tab) {
@@ -667,8 +693,8 @@ function SettingsCard({ title, subtitle, action, children, className, contentCla
     <section className={cn("rounded-lg border bg-card shadow-[0_1px_2px_rgba(15,23,42,0.04)]", className)}>
       <div className="flex flex-col gap-3 px-6 py-4 sm:flex-row sm:items-start sm:justify-between">
         <div className="min-w-0">
-          <h2 className="text-[15px] font-semibold leading-6 text-foreground">{title}</h2>
-          {subtitle && <p className="mt-0.5 text-xs leading-5 text-muted-foreground">{subtitle}</p>}
+          <h2 className="break-words text-[15px] font-semibold leading-6 text-foreground [overflow-wrap:anywhere]">{title}</h2>
+          {subtitle && <p className="mt-0.5 break-words text-xs leading-5 text-muted-foreground [overflow-wrap:anywhere]">{subtitle}</p>}
         </div>
         {action && <div className="w-full shrink-0 sm:w-auto sm:justify-end [&>a]:w-full [&>button]:w-full sm:[&>a]:w-auto sm:[&>button]:w-auto">{action}</div>}
       </div>
@@ -677,7 +703,20 @@ function SettingsCard({ title, subtitle, action, children, className, contentCla
   )
 }
 
-function AccountTabSection({ user, stats, selectedMailbox, mailboxes, onOpenCleanup }: { user: AccountSettingsSectionProps["user"]; profile: AccountSettingsSectionProps["profile"]; stats?: MailStats; showStats: boolean; displayMode: DisplayMode; onDisplayModeChange: (mode: DisplayMode) => void; selectedMailbox?: Mailbox; mailboxes: Mailbox[]; onOpenCleanup: () => void }) {
+function ProfileQueryFailure({ errors, onRetry }: { errors: Error[]; onRetry: () => void }) {
+  const messages = Array.from(new Set(errors.map((error) => error.message).filter(Boolean)))
+  return (
+    <div className="rounded-lg border border-destructive/40 bg-destructive/5 px-6 py-8 text-center" role="alert">
+      <div className="text-base font-semibold text-destructive">页面数据读取失败</div>
+      <div className="mt-2 break-words text-sm text-muted-foreground">{messages.join("；") || "请检查网络连接后重试"}</div>
+      <Button type="button" variant="outline" className="mt-5" onClick={onRetry}>
+        <RefreshCcw className="h-4 w-4" />重新读取
+      </Button>
+    </div>
+  )
+}
+
+function AccountTabSection({ user, profile, stats, showStats, displayMode, onDisplayModeChange, selectedMailbox, mailboxes, onOpenCleanup }: { user: AccountSettingsSectionProps["user"]; profile: AccountSettingsSectionProps["profile"]; stats?: MailStats; showStats: boolean; displayMode: DisplayMode; onDisplayModeChange: (mode: DisplayMode) => void; selectedMailbox?: Mailbox; mailboxes: Mailbox[]; onOpenCleanup: () => void }) {
   const accountName = user.email
   const quotaBytes = stats?.quotaBytes || (selectedMailbox?.quotaMb ? selectedMailbox.quotaMb * 1024 * 1024 : 0)
   const storageBytes = stats?.storageBytes || 0
@@ -685,26 +724,35 @@ function AccountTabSection({ user, stats, selectedMailbox, mailboxes, onOpenClea
   return (
     <div className="space-y-6">
       <SettingsCard title="账号信息">
-        <div className="space-y-5">
+        <form className="space-y-5" onSubmit={(event) => { event.preventDefault(); profile.mutate(new FormData(event.currentTarget)) }}>
           <InfoLine label="主登录邮箱" value={accountName} />
           <div className="grid gap-2 sm:grid-cols-[10rem_minmax(0,1fr)] sm:items-center">
-            <Label className="text-base font-normal text-muted-foreground">时区</Label>
-            <Select defaultValue="Asia/Shanghai">
-              <SelectTrigger className="h-[29px] sm:ml-auto sm:w-[236px]">
-                <SelectValue />
-              </SelectTrigger>
-              <SelectContent>
-                <SelectItem value="Asia/Shanghai">Asia/Shanghai (UTC+8)</SelectItem>
-                <SelectItem value="Asia/Tokyo">Asia/Tokyo (UTC+9)</SelectItem>
-                <SelectItem value="Asia/Singapore">Asia/Singapore (UTC+8)</SelectItem>
-                <SelectItem value="UTC">UTC (UTC+0)</SelectItem>
-              </SelectContent>
-            </Select>
+            <Label htmlFor="profile-display-name" className="text-base font-normal text-muted-foreground">显示名称</Label>
+            <div className="flex flex-col gap-2 sm:ml-auto sm:w-[320px] sm:flex-row">
+              <Input id="profile-display-name" name="displayName" defaultValue={user.displayName} maxLength={80} required className="h-9" />
+              <Button type="submit" size="sm" disabled={profile.isPending}>{profile.isPending ? "保存中..." : "保存"}</Button>
+            </div>
           </div>
+        </form>
+      </SettingsCard>
+
+      <SettingsCard title="邮件列表显示">
+        <div className="grid grid-cols-2 gap-1 rounded-lg bg-muted p-1" role="group" aria-label="邮件列表显示模式">
+          {(["detailed", "compact"] as DisplayMode[]).map((mode) => (
+            <button
+              key={mode}
+              type="button"
+              className={cn("h-9 rounded-md px-3 text-sm font-medium transition-colors", displayMode === mode ? "bg-background text-foreground shadow-sm" : "text-muted-foreground hover:text-foreground")}
+              aria-pressed={displayMode === mode}
+              onClick={() => onDisplayModeChange(mode)}
+            >
+              {mode === "detailed" ? "标准布局" : "紧凑布局"}
+            </button>
+          ))}
         </div>
       </SettingsCard>
 
-      <SettingsCard title="存储容量" action={<Button type="button" variant="outline" size="sm" onClick={onOpenCleanup}>邮件清理</Button>}>
+      {showStats && <SettingsCard title="存储容量" action={<Button type="button" variant="outline" size="sm" onClick={onOpenCleanup}>邮件清理</Button>}>
         <div className="mb-2 flex items-center justify-between text-sm text-muted-foreground">
           <span>{quotaBytes > 0 ? `${formatBytes(storageBytes)} / ${formatBytes(quotaBytes)}` : formatBytes(storageBytes)}</span>
           <span>{quotaBytes > 0 ? `${quotaPct}%` : "不限"}</span>
@@ -712,7 +760,7 @@ function AccountTabSection({ user, stats, selectedMailbox, mailboxes, onOpenClea
         <div className="h-2 overflow-hidden rounded-full bg-muted">
           <div className="h-full rounded-full bg-primary transition-all" style={{ width: `${quotaBytes > 0 ? quotaPct : 12}%` }} />
         </div>
-      </SettingsCard>
+      </SettingsCard>}
 
       <SettingsCard title="账号配额" action={<span className="pt-1 text-sm text-muted-foreground">实时按当前账号配置计算</span>}>
         <div className="grid gap-3 md:grid-cols-2">
@@ -862,8 +910,8 @@ function MailPreferencesSection({
                   </div>
                   <div className="flex shrink-0 gap-1">
                     {!item.isDefault && <Button type="button" variant="outline" size="sm" disabled={signaturesPending} onClick={() => onSetDefaultSignature(item.id)}>设为默认</Button>}
-                    <Button type="button" variant="ghost" size="icon" className="size-8" onClick={() => setEditingSignature(item)}><PencilLine className="h-4 w-4" /></Button>
-                    <Button type="button" variant="ghost" size="icon" className="size-8 text-destructive" onClick={() => setPendingConfirm({ title: "删除签名？", description: `签名“${item.name}”将被删除。`, confirmText: "删除签名", destructive: true, onConfirm: () => { onDeleteSignature(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
+                    <Button type="button" variant="ghost" size="icon" className="size-8" aria-label={`编辑签名 ${item.name}`} title="编辑签名" onClick={() => setEditingSignature(item)}><PencilLine className="h-4 w-4" /></Button>
+                    <Button type="button" variant="ghost" size="icon" className="size-8 text-destructive" aria-label={`删除签名 ${item.name}`} title="删除签名" onClick={() => setPendingConfirm({ title: "删除签名？", description: `签名“${item.name}”将被删除。`, confirmText: "删除签名", destructive: true, onConfirm: () => { onDeleteSignature(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
                   </div>
                 </div>
               </div>
@@ -923,7 +971,7 @@ function SecuritySettingsSection({ user, password, passwordFormRef, twoFactorFor
           <div className="flex size-10 items-center justify-center rounded-full bg-emerald-100 text-emerald-700"><ShieldCheck className="h-5 w-5" /></div>
           <div>
             <div className="font-semibold">{user.email}</div>
-            <div className="text-sm text-muted-foreground">上次登录：刚刚</div>
+            <div className="text-sm text-muted-foreground">当前已登录账号</div>
           </div>
         </div>
       </SettingsCard>
@@ -999,27 +1047,10 @@ function SecuritySettingsSection({ user, password, passwordFormRef, twoFactorFor
         )}
       </SettingsCard>
 
-      <SettingsCard title="临时发信申请">
-        <div className="space-y-3">
-          {[selectedRequestRow(user.email, "已批准", "6小时"), selectedRequestRow(user.email, "已过期", "24小时")].map((item, index) => (
-            <div key={`${item.status}-${index}`} className="rounded-lg border px-4 py-3 text-sm">
-              <div className="flex items-center justify-between gap-3">
-                <span className="font-medium">{item.email}</span>
-                <Badge variant="secondary">{item.status}</Badge>
-              </div>
-              <div className="mt-1 text-muted-foreground">申请时长：{item.duration} · 原因：临时客户端发信测试</div>
-            </div>
-          ))}
-        </div>
-      </SettingsCard>
     </div>
   )
 }
 
-function selectedRequestRow(email: string, status: string, duration: string) {
-  return { email, status, duration }
-}
-
 function CleanupQueueSection({ mailbox, stats }: { mailbox?: Mailbox; stats?: MailStats }) {
   const rows = (stats?.byFolder || []).filter((item) => item.role === "trash" || item.role === "spam").map((item) => ({ name: folderLabel(item.folder), count: item.count, bytes: item.bytes }))
   return (
@@ -1099,10 +1130,21 @@ function MailboxManagement({
   const [accountForwardTargets, setAccountForwardTargets] = React.useState<string[]>([])
   const [verifiedDialogOpen, setVerifiedDialogOpen] = React.useState(false)
   const [verifiedEmailDraft, setVerifiedEmailDraft] = React.useState("")
+  const [verifiedEmailsExpanded, setVerifiedEmailsExpanded] = React.useState(false)
   const [pendingExternalDelete, setPendingExternalDelete] = React.useState<ExternalImapAccount | null>(null)
   const forwarding = useQuery({ queryKey: ["forwarding-settings"], queryFn: api.forwardingSettings, enabled: mailboxes.length > 0 })
   const verifiedEmailItems = React.useMemo(() => [...(forwarding.data?.verifiedEmails || [])].sort((a, b) => forwardingTargetCollator.compare(a.email, b.email)), [forwarding.data?.verifiedEmails])
   const verifiedEmails = React.useMemo(() => sortForwardingTargets(verifiedEmailItems.filter((item) => item.verified).map((item) => item.email)), [verifiedEmailItems])
+  const pendingVerifiedEmailItems = React.useMemo(() => verifiedEmailItems.filter((item) => !item.verified), [verifiedEmailItems])
+  const completedVerifiedEmailItems = React.useMemo(() => verifiedEmailItems.filter((item) => item.verified), [verifiedEmailItems])
+  const normalizedVerifiedEmailDraft = verifiedEmailDraft.trim().toLowerCase()
+  const matchingPendingVerifiedEmailItems = React.useMemo(() => normalizedVerifiedEmailDraft
+    ? pendingVerifiedEmailItems.filter((item) => item.email.toLowerCase().includes(normalizedVerifiedEmailDraft))
+    : pendingVerifiedEmailItems, [normalizedVerifiedEmailDraft, pendingVerifiedEmailItems])
+  const matchingCompletedVerifiedEmailItems = React.useMemo(() => normalizedVerifiedEmailDraft
+    ? completedVerifiedEmailItems.filter((item) => item.email.toLowerCase().includes(normalizedVerifiedEmailDraft))
+    : completedVerifiedEmailItems, [completedVerifiedEmailItems, normalizedVerifiedEmailDraft])
+  const verifiedEmailDraftExists = verifiedEmailItems.some((item) => item.email.toLowerCase() === normalizedVerifiedEmailDraft)
   const hasPendingVerifiedEmails = verifiedEmailItems.some((item) => !item.verified)
   const mailboxForwards = React.useMemo<Record<string, string[]>>(() => {
     const next: Record<string, string[]> = {}
@@ -1319,9 +1361,8 @@ function MailboxManagement({
       </section>
 
       <section id="mailbox-forwarding-section" className="rounded-lg border bg-card px-6 py-5">
-        <div className="mb-5 flex items-center justify-between gap-4">
+        <div className="mb-5 flex items-center gap-4">
           <h2 className="text-lg font-semibold leading-7">邮件转发</h2>
-          <Button type="button" variant="outline" size="sm" onClick={() => setVerifiedDialogOpen(true)}>管理验证邮箱</Button>
         </div>
         <div className="rounded-xl bg-muted/20 px-5 py-5">
           <div className="mb-3 text-sm font-medium">账号级转发</div>
@@ -1331,20 +1372,14 @@ function MailboxManagement({
             <Button type="button" className="h-[37px]" disabled={forwardingBusy} onClick={() => saveAccountForwarding.mutate(accountForwardTargets)}>{saveAccountForwarding.isPending ? "保存中" : "保存"}</Button>
           </div>
         </div>
-        {verifiedEmailItems.length > 0 && (
-          <div className="mt-5 flex flex-wrap gap-2">
-            {verifiedEmailItems.map((item) => {
-              const tone = forwardingEmailTone(item)
-              return (
-                <span key={item.id} className={cn("inline-flex max-w-full items-center gap-2 rounded-full px-3 py-1 text-sm", tone.chipClass)}>
-                  <span className={cn("size-2 shrink-0 rounded-full", tone.dotClass)} />
-                  <span className="min-w-0 truncate">{item.email} · {tone.shortLabel}</span>
-                </span>
-              )
-            })}
-          </div>
-        )}
-        {verifiedEmails.length === 0 && <p className="mt-4 text-sm text-muted-foreground">暂未添加验证邮箱，请先点击「管理验证邮箱」添加。</p>}
+        <Button type="button" variant="outline" className="mt-5 h-auto w-full justify-start gap-3 px-4 py-3 text-left font-normal shadow-none" onClick={() => setVerifiedDialogOpen(true)}>
+          <span className="flex size-9 shrink-0 items-center justify-center rounded-md bg-emerald-50 text-emerald-700"><MailCheck className="h-4 w-4" /></span>
+          <span className="min-w-0 flex-1">
+            <span className="block text-sm font-medium">管理验证邮箱</span>
+            <span className="block truncate text-sm text-muted-foreground">已验证 {completedVerifiedEmailItems.length} 个{pendingVerifiedEmailItems.length > 0 ? `，待验证 ${pendingVerifiedEmailItems.length} 个` : ""}</span>
+          </span>
+          <ChevronDown className="h-4 w-4 shrink-0 -rotate-90 text-muted-foreground" />
+        </Button>
         <p className="mt-3 text-sm text-muted-foreground">提示：点击邮箱列表中的「转发」按钮，可在账号级目标之外追加该邮箱自己的转发目标。</p>
       </section>
 
@@ -1438,45 +1473,58 @@ function MailboxManagement({
         </DialogContent>
       </Dialog>
 
-      <Dialog open={verifiedDialogOpen} onOpenChange={setVerifiedDialogOpen}>
+      <Dialog open={verifiedDialogOpen} onOpenChange={(open) => {
+        setVerifiedDialogOpen(open)
+        if (!open) setVerifiedEmailDraft("")
+      }}>
         <DialogContent className="gap-0 overflow-hidden p-0 sm:max-w-[640px]">
           <DialogHeader className="px-8 pt-8">
             <DialogTitle className="text-2xl leading-8">验证邮箱管理</DialogTitle>
           </DialogHeader>
-          <div className="px-8 pt-5 text-[17px] leading-8 text-muted-foreground">
-            添加并验证外部邮箱地址后，才能用作转发目标。这里只展示投递状态摘要，不展示验证邮件内容。
+          <div className="px-8 pt-4 text-sm leading-6 text-muted-foreground">
+            搜索已添加地址，或输入新的外部邮箱并发送验证邮件。
           </div>
           <form className="grid gap-3 px-8 pt-6 sm:grid-cols-[minmax(0,1fr)_96px]" onSubmit={submitVerifiedEmail}>
-            <Input type="email" value={verifiedEmailDraft} onChange={(event) => setVerifiedEmailDraft(event.target.value)} className="h-12 text-base shadow-none" placeholder="输入邮箱地址" disabled={forwardingBusy} />
-            <Button className="h-12 px-0 text-base" disabled={forwardingBusy || !verifiedEmailDraft.trim()}>{addVerifiedEmail.isPending ? "添加中" : "添加"}</Button>
+            <div className="relative">
+              <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
+              <Input type="email" value={verifiedEmailDraft} onChange={(event) => setVerifiedEmailDraft(event.target.value)} className="h-12 pl-10 text-base shadow-none" placeholder="搜索或输入新邮箱" disabled={forwardingBusy} aria-label="搜索或输入新邮箱" />
+            </div>
+            <Button className="h-12 px-0 text-base" disabled={forwardingBusy || !verifiedEmailDraft.trim() || verifiedEmailDraftExists}>{addVerifiedEmail.isPending ? "添加中" : verifiedEmailDraftExists ? "已添加" : "添加"}</Button>
           </form>
-          <div className="mx-8 mt-6 max-h-[360px] overflow-y-auto rounded-lg border">
-            {verifiedEmailItems.map((item) => (
-              <div key={item.id} className="grid min-h-[82px] gap-3 border-b px-4 py-4 last:border-b-0 sm:grid-cols-[minmax(0,1fr)_auto] sm:items-center">
-                <div className="min-w-0">
-                  <div className="truncate text-lg font-semibold leading-6">{item.email}</div>
-                  <div className="mt-1 text-sm text-muted-foreground">{item.verified ? `已验证 - ${formatDateTime(item.verifiedAt || item.createdAt)}` : "待验证"}</div>
-                  {!item.verified && (
-                    <div className={cn("mt-1 text-sm leading-5", forwardingEmailTone(item).detailClass)}>
-                      {forwardingEmailStatusText(item)}
-                    </div>
-                  )}
-                </div>
-                <div className="flex shrink-0 items-center justify-end gap-2">
-                  <span className={cn("size-2.5 rounded-full", forwardingEmailTone(item).dotClass)} />
-                  {!item.verified && (
-                    <Button type="button" variant="outline" className="h-10 px-4" disabled={forwardingBusy} onClick={() => resendVerification(item)}>重发</Button>
-                  )}
-                  <Button type="button" variant="outline" className="h-10 px-4 text-destructive hover:text-destructive" disabled={forwardingBusy} onClick={() => removeVerifiedEmail(item.id, item.email)} aria-label={`移除 ${item.email}`}>
-                    删除
-                  </Button>
-                </div>
+          <div className="mx-8 mt-6 max-h-[380px] space-y-4 overflow-y-auto pr-1">
+            {pendingVerifiedEmailItems.length > 0 && (
+              <div className="rounded-lg border">
+                <div className="border-b bg-muted/30 px-4 py-3 text-sm font-medium">待验证 ({pendingVerifiedEmailItems.length})</div>
+                {matchingPendingVerifiedEmailItems.map((item) => (
+                  <VerifiedEmailRow key={item.id} item={item} busy={forwardingBusy} onResend={resendVerification} onRemove={removeVerifiedEmail} />
+                ))}
+                {matchingPendingVerifiedEmailItems.length === 0 && <div className="px-4 py-8 text-center text-sm text-muted-foreground">待验证邮箱中没有匹配地址</div>}
               </div>
-            ))}
-            {verifiedEmailItems.length === 0 && <div className="py-10 text-center text-sm text-muted-foreground">暂无验证邮箱</div>}
+            )}
+            {completedVerifiedEmailItems.length > 0 && (
+              <div className="rounded-lg border">
+                <Button type="button" variant="ghost" className="h-12 w-full justify-start gap-3 rounded-none px-4 font-normal" onClick={() => setVerifiedEmailsExpanded((value) => !value)} aria-expanded={verifiedEmailsExpanded || !!normalizedVerifiedEmailDraft}>
+                  <MailCheck className="h-4 w-4 text-emerald-600" />
+                  <span className="flex-1 text-sm font-medium">已验证邮箱 ({completedVerifiedEmailItems.length})</span>
+                  {verifiedEmailsExpanded || normalizedVerifiedEmailDraft ? <ChevronUp className="h-4 w-4 text-muted-foreground" /> : <ChevronDown className="h-4 w-4 text-muted-foreground" />}
+                </Button>
+                {(verifiedEmailsExpanded || !!normalizedVerifiedEmailDraft) && (
+                  <div className="border-t">
+                    {matchingCompletedVerifiedEmailItems.map((item) => (
+                      <VerifiedEmailRow key={item.id} item={item} busy={forwardingBusy} onResend={resendVerification} onRemove={removeVerifiedEmail} />
+                    ))}
+                    {matchingCompletedVerifiedEmailItems.length === 0 && <div className="px-4 py-8 text-center text-sm text-muted-foreground">已验证邮箱中没有匹配地址</div>}
+                  </div>
+                )}
+              </div>
+            )}
+            {verifiedEmailItems.length === 0 && <div className="rounded-lg border py-10 text-center text-sm text-muted-foreground">暂无验证邮箱</div>}
+            {normalizedVerifiedEmailDraft && !verifiedEmailDraftExists && matchingPendingVerifiedEmailItems.length === 0 && matchingCompletedVerifiedEmailItems.length === 0 && verifiedEmailItems.length > 0 && (
+              <div className="rounded-md bg-muted/40 px-4 py-3 text-sm text-muted-foreground">没有匹配地址，可点击「添加」发送验证邮件。</div>
+            )}
           </div>
           <DialogFooter className="border-t px-8 py-6">
-            <Button type="button" variant="outline" className="h-12 px-8 text-base" onClick={() => setVerifiedDialogOpen(false)}>关闭</Button>
+            <Button type="button" variant="outline" className="h-12 px-8 text-base" onClick={() => { setVerifiedDialogOpen(false); setVerifiedEmailDraft("") }}>关闭</Button>
           </DialogFooter>
         </DialogContent>
       </Dialog>
@@ -1578,7 +1626,7 @@ function ExternalImapDialog({ account, mailboxId, disabled, pending, onSubmit }:
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <Button type="button" variant={account ? "outline" : "default"} size={account ? "sm" : "default"} disabled={disabled} onClick={() => setOpen(true)}>
-        {account ? "编辑" : <><Plus className="h-4 w-4" />添加外部邮箱</>}
+        {account ? "编辑" : "添加外部邮箱"}
       </Button>
       <DialogContent className="max-h-[92dvh] overflow-y-auto sm:max-w-xl">
         <DialogHeader><DialogTitle>{account ? "编辑外部 IMAP" : "添加外部 IMAP"}</DialogTitle></DialogHeader>
@@ -1776,7 +1824,7 @@ function ForwardingTargetPicker({ emails, selected, lockedSelected = [], lockedL
                 autoFocus
               />
               {query && (
-                <Button type="button" variant="ghost" size="icon" className="absolute right-0.5 top-0.5 size-7 text-muted-foreground" onClick={() => setQuery("")}>
+                <Button type="button" variant="ghost" size="icon" className="absolute right-0.5 top-0.5 size-7 text-muted-foreground" aria-label="清除搜索" title="清除搜索" onClick={() => setQuery("")}>
                   <X className="h-3.5 w-3.5" />
                 </Button>
               )}
@@ -1821,35 +1869,55 @@ function ForwardingTargetPicker({ emails, selected, lockedSelected = [], lockedL
   )
 }
 
+function VerifiedEmailRow({ item, busy, onResend, onRemove }: {
+  item: ForwardingVerifiedEmail
+  busy: boolean
+  onResend: (item: ForwardingVerifiedEmail) => void
+  onRemove: (id: string, email: string) => void
+}) {
+  const tone = forwardingEmailTone(item)
+  return (
+    <div className="grid min-h-[72px] gap-3 border-b px-4 py-3 last:border-b-0 sm:grid-cols-[minmax(0,1fr)_auto] sm:items-center">
+      <div className="min-w-0">
+        <div className="flex items-center gap-2">
+          <span className={cn("size-2 shrink-0 rounded-full", tone.dotClass)} />
+          <span className="min-w-0 truncate text-sm font-semibold" title={item.email}>{item.email}</span>
+        </div>
+        <div className={cn("mt-1 pl-4 text-xs leading-5", item.verified ? "text-muted-foreground" : tone.detailClass)}>
+          {item.verified ? `验证于 ${formatDateTime(item.verifiedAt || item.createdAt)}` : forwardingEmailStatusText(item)}
+        </div>
+      </div>
+      <div className="flex shrink-0 items-center justify-end gap-2">
+        {!item.verified && (
+          <Button type="button" variant="outline" size="sm" className="h-9" disabled={busy} onClick={() => onResend(item)}>重发</Button>
+        )}
+        <Button type="button" variant="ghost" size="sm" className="h-9 text-destructive hover:bg-destructive/10 hover:text-destructive" disabled={busy} onClick={() => onRemove(item.id, item.email)} aria-label={`删除 ${item.email}`}>删除</Button>
+      </div>
+    </div>
+  )
+}
+
 function forwardingEmailTone(item: ForwardingVerifiedEmail) {
   if (item.verified) {
     return {
-      shortLabel: "已验证",
       dotClass: "bg-emerald-500",
-      chipClass: "bg-emerald-100 text-emerald-800",
       detailClass: "text-emerald-700",
     }
   }
   if (item.deliveryStatus === "failed") {
     return {
-      shortLabel: "发送失败",
       dotClass: "bg-destructive",
-      chipClass: "bg-destructive/10 text-destructive",
       detailClass: "text-destructive",
     }
   }
   if (item.deliveryStatus === "delivered") {
     return {
-      shortLabel: "待验证",
       dotClass: "bg-amber-500",
-      chipClass: "bg-amber-100 text-amber-800",
       detailClass: "text-amber-700",
     }
   }
   return {
-    shortLabel: "待验证",
     dotClass: "bg-muted-foreground",
-    chipClass: "bg-muted text-foreground",
     detailClass: "text-foreground",
   }
 }
@@ -1937,7 +2005,7 @@ function ClientSettingsSection({ mailboxes, selectedMailboxId, hostname, onSelec
                   <div className="text-muted-foreground">用户名</div>
                   <div className="flex min-w-0 items-center justify-between gap-2">
                     <span className="truncate text-right sm:text-left">{selected.address}</span>
-                    <Button type="button" variant="ghost" size="icon" className="size-7" onClick={() => onCopy(selected.address)}><Copy className="h-4 w-4" /></Button>
+                    <Button type="button" variant="ghost" size="icon" className="size-7" aria-label="复制邮箱地址" title="复制邮箱地址" onClick={() => onCopy(selected.address)}><Copy className="h-4 w-4" /></Button>
                   </div>
                   <div className="text-muted-foreground">密码</div>
                   <div>邮箱登录密码</div>
@@ -1961,7 +2029,7 @@ function ClientConfigRow({ label, value, security, onCopy }: { label: string; va
         <code className="truncate rounded border bg-background px-2 py-1 text-xs">{value}</code>
         <div className="flex shrink-0 items-center gap-1">
           <span className="text-xs font-medium text-emerald-600">{security}</span>
-          <Button type="button" variant="ghost" size="icon" className="size-7" onClick={() => onCopy(value)}><Copy className="h-4 w-4" /></Button>
+          <Button type="button" variant="ghost" size="icon" className="size-7" aria-label={`复制${label}`} title={`复制${label}`} onClick={() => onCopy(value)}><Copy className="h-4 w-4" /></Button>
         </div>
       </div>
     </div>
@@ -2128,8 +2196,8 @@ function ContactsSection({ items, loading, onCreate, onDelete, onCopy, pending }
                 <div className="truncate text-xs text-muted-foreground">{item.email}{item.note ? ` · ${item.note}` : ""}</div>
               </div>
               <div className="flex shrink-0 gap-1">
-                <Button variant="ghost" size="icon" className="size-8" onClick={() => onCopy(item.email)}><Copy className="h-4 w-4" /></Button>
-                <Button variant="ghost" size="icon" className="size-8 text-destructive" onClick={() => setPendingConfirm({ title: "删除联系人？", description: `${item.email} 将从联系人列表中移除。`, confirmText: "删除联系人", onConfirm: () => { onDelete(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
+                <Button variant="ghost" size="icon" className="size-8" aria-label={`复制联系人邮箱 ${item.email}`} title="复制邮箱" onClick={() => onCopy(item.email)}><Copy className="h-4 w-4" /></Button>
+                <Button variant="ghost" size="icon" className="size-8 text-destructive" aria-label={`删除联系人 ${item.email}`} title="删除联系人" onClick={() => setPendingConfirm({ title: "删除联系人？", description: `${item.email} 将从联系人列表中移除。`, confirmText: "删除联系人", onConfirm: () => { onDelete(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
               </div>
             </div>
           ))}
@@ -2153,16 +2221,13 @@ function CleanupSection({ mailbox, stats, showStats, pending, onCleanup }: { mai
     })
   }
   return (
-    <div className="space-y-6">
+    <div className="space-y-4">
       {showStats && <StatsSummary stats={stats} />}
-      <Card>
-        <CardHeader><CardTitle>清理当前邮箱</CardTitle></CardHeader>
-        <CardContent className="grid gap-3 md:grid-cols-3">
+      <SettingsCard title="清理当前邮箱" subtitle={mailbox ? `当前邮箱：${mailbox.address}` : "请先选择邮箱"} contentClassName="grid gap-3 sm:grid-cols-2 lg:grid-cols-3">
           <CleanupButton icon={<MailCheck className="h-4 w-4" />} title="归档已读收件箱" disabled={!mailbox || pending} onClick={() => confirmCleanup("archive-read-inbox", "归档已读收件箱？")} />
           <CleanupButton icon={<MailX className="h-4 w-4" />} title="清空垃圾邮件" disabled={!mailbox || pending} onClick={() => confirmCleanup("empty-spam", "清空垃圾邮件？", true)} />
           <CleanupButton icon={<Trash2 className="h-4 w-4" />} title="清空回收站" disabled={!mailbox || pending} onClick={() => confirmCleanup("empty-trash", "清空回收站？", true)} />
-        </CardContent>
-      </Card>
+      </SettingsCard>
       <ConfirmDialog open={!!pendingConfirm} title={pendingConfirm?.title || ""} description={pendingConfirm?.description} confirmText={pendingConfirm?.confirmText || "确认"} destructive={!!pendingConfirm?.destructive} pending={pending} onOpenChange={(open) => { if (!open) setPendingConfirm(null) }} onConfirm={() => pendingConfirm?.onConfirm()} />
     </div>
   )
@@ -2193,6 +2258,9 @@ const ruleActionLabels: Record<MailRuleAction["type"], string> = { archive: "移
 
 function RulesSection({ items, mailboxes, labels, verifiedEmails, open, onOpenChange, onCreate, onUpdate, onToggle, onMove, onApply, onDelete, pending }: { items: MailRule[]; mailboxes: Mailbox[]; labels: MailLabel[]; verifiedEmails: string[]; open: boolean; onOpenChange: (open: boolean) => void; onCreate: (payload: RuleCreatePayload) => void; onUpdate: (id: string, payload: RuleCreatePayload) => void; onToggle: (item: MailRule) => void; onMove: (id: string, direction: "up" | "down") => void; onApply: (id: string) => void; onDelete: (id: string) => void; pending: boolean }) {
   const [editingRule, setEditingRule] = React.useState<MailRule | null>(null)
+  const [query, setQuery] = React.useState("")
+  const normalizedQuery = query.trim().toLocaleLowerCase()
+  const filteredItems = items.map((item, index) => ({ item, index })).filter(({ item }) => !normalizedQuery || item.name.toLocaleLowerCase().includes(normalizedQuery))
 
   function setDialogOpen(next: boolean) {
     if (!next) setEditingRule(null)
@@ -2201,12 +2269,18 @@ function RulesSection({ items, mailboxes, labels, verifiedEmails, open, onOpenCh
 
   return (
     <div className="space-y-4">
-      <div className="flex justify-stretch sm:justify-end">
-        <Button className="h-9 w-full rounded-md px-4 text-sm font-normal sm:w-auto" onClick={() => { setEditingRule(null); onOpenChange(true) }}>新建规则</Button>
+      <div className="grid grid-cols-[minmax(0,1fr)_auto] items-center gap-2">
+        <div className="relative min-w-0">
+          <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
+          <Input value={query} onChange={(event) => setQuery(event.target.value)} placeholder="搜索规则名称" aria-label="搜索规则" className="h-10 pl-9 pr-10" />
+          {query && <Button type="button" variant="ghost" size="icon" className="absolute right-1 top-1 size-8 text-muted-foreground" onClick={() => setQuery("")} aria-label="清除规则搜索" title="清除搜索"><X className="h-4 w-4" /></Button>}
+        </div>
+        <Button className="h-10 shrink-0 rounded-md px-3 text-sm font-normal sm:px-4" onClick={() => { setEditingRule(null); onOpenChange(true) }}>新建规则</Button>
       </div>
       <div className="space-y-3">
-        {items.map((item, index) => <RuleListItem key={item.id} item={item} index={index} count={items.length} pending={pending} onEdit={() => { setEditingRule(item); onOpenChange(true) }} onToggle={() => onToggle(item)} onMove={(direction) => onMove(item.id, direction)} onApply={() => onApply(item.id)} onDelete={onDelete} />)}
+        {filteredItems.map(({ item, index }) => <RuleListItem key={item.id} item={item} index={index} count={items.length} mailboxLabel={item.mailboxId ? mailboxes.find((mailbox) => mailbox.id === item.mailboxId)?.address || "指定邮箱" : "全部邮箱"} pending={pending} onEdit={() => { setEditingRule(item); onOpenChange(true) }} onToggle={() => onToggle(item)} onMove={(direction) => onMove(item.id, direction)} onApply={() => onApply(item.id)} onDelete={onDelete} />)}
         {items.length === 0 && <EmptyState icon={<SlidersHorizontal />} text="暂无收件规则" description="新建规则后，可自动标记、移动或转发符合条件的邮件。" className="min-h-[180px] border-solid bg-card" />}
+        {items.length > 0 && filteredItems.length === 0 && <EmptyState icon={<Search />} text="没有找到规则" description={`没有名称包含“${query.trim()}”的规则。`} className="min-h-[180px] border-solid bg-card" />}
       </div>
       <RuleDialog open={open} onOpenChange={setDialogOpen} mailboxes={mailboxes} labels={labels} verifiedEmails={verifiedEmails} pending={pending} initialRule={editingRule} onSave={(payload) => editingRule ? onUpdate(editingRule.id, payload) : onCreate(payload)} />
     </div>
@@ -2224,7 +2298,10 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, verifiedEmails, pen
   const [stopProcessing, setStopProcessing] = React.useState(false)
   const selectedMailboxId = mailboxId === "all" ? "" : mailboxId
   const labelQuery = useQuery({ queryKey: ["labels", "rule-dialog", selectedMailboxId], queryFn: () => api.labels(selectedMailboxId), enabled: !!selectedMailboxId })
+  const folderQueryMailboxId = selectedMailboxId || "all"
+  const folderQuery = useQuery({ queryKey: ["folders", "rule-dialog", folderQueryMailboxId], queryFn: () => api.folders(folderQueryMailboxId), enabled: open })
   const availableLabels = selectedMailboxId ? (labelQuery.data?.items || []) : labels
+  const availableFolders = folderQuery.data?.items || []
 
   React.useEffect(() => {
     if (!open) return
@@ -2268,37 +2345,39 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, verifiedEmails, pen
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="flex h-svh w-screen max-w-none gap-0 overflow-hidden p-0 sm:h-auto sm:max-h-[92vh] sm:w-[min(94vw,56rem)]">
-        <DialogHeader className="border-b px-4 py-4 text-left sm:px-8 sm:py-6">
+      <DialogContent className="!flex h-dvh w-screen max-w-none flex-col gap-0 overflow-hidden border-0 p-0 sm:h-auto sm:max-h-[92vh] sm:w-[min(94vw,56rem)] sm:border">
+        <DialogHeader className="shrink-0 border-b px-4 py-4 pr-16 text-left sm:px-8 sm:py-6 sm:pr-16">
           <DialogTitle className="text-xl sm:text-2xl">{initialRule ? "编辑规则" : "新建规则"}</DialogTitle>
         </DialogHeader>
         <form className="flex min-h-0 flex-1 flex-col" onSubmit={submit}>
-          <div className="min-h-0 flex-1 space-y-6 overflow-y-auto px-4 py-5 sm:space-y-7 sm:px-8 sm:py-7">
-            <Field label="名称"><Input value={name} onChange={(event) => setName(event.target.value)} placeholder="我的规则" /></Field>
+          <div className="min-h-0 flex-1 space-y-6 overflow-y-auto overscroll-contain px-4 py-5 sm:space-y-7 sm:px-8 sm:py-7">
+            <Field label="名称"><Input className="h-11 sm:h-9" value={name} onChange={(event) => setName(event.target.value)} placeholder="我的规则" /></Field>
             <Field label="适用邮箱"><MailboxSelect value={mailboxId} mailboxes={mailboxes} onChange={setMailboxId} /></Field>
 
             <div className="space-y-4">
-              <div className="flex flex-wrap items-center gap-3 text-sm">
-                <span>当新邮件到达时，满足以下</span>
+              <div className="space-y-2 text-sm">
+                <div>当新邮件到达时，满足以下</div>
                 <Select value={matchMode} onValueChange={(value) => setMatchMode(value as "all" | "any")}>
-                  <SelectTrigger className="h-9 w-[132px]"><SelectValue /></SelectTrigger>
+                  <SelectTrigger className="h-11 w-full md:h-9 md:w-[180px]"><SelectValue /></SelectTrigger>
                   <SelectContent><SelectItem value="all">所有条件</SelectItem><SelectItem value="any">任一条件</SelectItem></SelectContent>
                 </Select>
               </div>
               <div className="space-y-3">
                 {conditions.map((condition, index) => (
-                  <div key={index} className="grid gap-3 md:grid-cols-[180px_128px_minmax(0,1fr)_auto_auto]">
+                  <div key={index} className="grid grid-cols-2 gap-2 rounded-md border p-3 md:grid-cols-[180px_128px_minmax(0,1fr)_auto_auto] md:gap-3 md:border-0 md:p-0">
                     <Select value={condition.field || "from"} onValueChange={(value) => updateCondition(index, { field: value as RuleConditionField })}>
-                      <SelectTrigger><SelectValue /></SelectTrigger>
+                      <SelectTrigger className="h-11 md:h-9"><SelectValue /></SelectTrigger>
                       <SelectContent>{conditionFields.map((value) => <SelectItem key={value} value={value}>{conditionFieldLabels[value]}</SelectItem>)}</SelectContent>
                     </Select>
                     <Select value={condition.operator || defaultConditionOperator(condition.field)} onValueChange={(value) => updateCondition(index, { operator: value as RuleConditionOperator })}>
-                      <SelectTrigger><SelectValue /></SelectTrigger>
+                      <SelectTrigger className="h-11 md:h-9"><SelectValue /></SelectTrigger>
                       <SelectContent>{conditionOperatorsForField(condition.field).map((value) => <SelectItem key={value} value={value}>{conditionOperatorLabels[value]}</SelectItem>)}</SelectContent>
                     </Select>
-                    <Input type={condition.field === "date" ? "date" : "text"} value={condition.value || ""} onChange={(event) => updateCondition(index, { value: event.target.value })} placeholder={conditionPlaceholder(condition.field)} />
-                    <Button type="button" variant="ghost" size="icon" className="text-muted-foreground" onClick={() => removeCondition(index)} disabled={conditions.length === 1}><X className="h-4 w-4" /></Button>
-                    <Button type="button" variant="ghost" size="icon" onClick={addCondition}><Plus className="h-4 w-4" /></Button>
+                    <Input className="col-span-2 h-11 md:col-span-1 md:h-9" type={condition.field === "date" ? "date" : "text"} value={condition.value || ""} onChange={(event) => updateCondition(index, { value: event.target.value })} placeholder={conditionPlaceholder(condition.field)} />
+                    <div className="col-span-2 flex justify-end gap-2 md:contents">
+                      <Button type="button" variant="ghost" size="icon" className="size-11 text-muted-foreground md:size-9" aria-label={`删除第 ${index + 1} 个条件`} title="删除条件" onClick={() => removeCondition(index)} disabled={conditions.length === 1}><X className="h-4 w-4" /></Button>
+                      <Button type="button" variant="outline" size="icon" className="size-11 md:size-9" aria-label="添加条件" title="添加条件" onClick={addCondition}><Plus className="h-4 w-4" /></Button>
+                    </div>
                   </div>
                 ))}
               </div>
@@ -2308,14 +2387,16 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, verifiedEmails, pen
               <div className="text-sm">执行以下动作</div>
               <div className="space-y-3">
                 {actions.map((action, index) => (
-                  <div key={index} className={cn("grid gap-3", action.type === "forward" ? "md:grid-cols-[180px_minmax(0,1fr)_auto]" : "md:grid-cols-[180px_minmax(0,1fr)_auto_auto]")}>
+                  <div key={index} className="grid gap-2 rounded-md border p-3 md:grid-cols-[180px_minmax(0,1fr)_auto_auto] md:gap-3 md:border-0 md:p-0">
                     <Select value={action.type} onValueChange={(value) => updateAction(index, { type: value as MailRuleAction["type"], value: "", labelId: "" })}>
-                      <SelectTrigger><SelectValue /></SelectTrigger>
+                      <SelectTrigger className="h-11 md:h-9"><SelectValue /></SelectTrigger>
                       <SelectContent>{(Object.keys(ruleActionLabels) as MailRuleAction["type"][]).map((value) => <SelectItem key={value} value={value}>{ruleActionLabels[value]}</SelectItem>)}</SelectContent>
                     </Select>
-                    <RuleActionValue action={action} labels={availableLabels} verifiedEmails={verifiedEmails} onChange={(patch) => updateAction(index, patch)} />
-                    <Button type="button" variant="ghost" size="icon" className="text-muted-foreground" onClick={() => removeAction(index)} disabled={actions.length === 1}><X className="h-4 w-4" /></Button>
-                    {action.type !== "forward" && <Button type="button" variant="ghost" size="icon" onClick={addAction}><Plus className="h-4 w-4" /></Button>}
+                    <div className="min-w-0"><RuleActionValue action={action} folders={availableFolders} labels={availableLabels} verifiedEmails={verifiedEmails} onChange={(patch) => updateAction(index, patch)} /></div>
+                    <div className="flex justify-end gap-2 md:contents">
+                      <Button type="button" variant="ghost" size="icon" className="size-11 text-muted-foreground md:size-9" aria-label={`删除第 ${index + 1} 个操作`} title="删除操作" onClick={() => removeAction(index)} disabled={actions.length === 1}><X className="h-4 w-4" /></Button>
+                      <Button type="button" variant="outline" size="icon" className="size-11 md:size-9" aria-label="添加操作" title="添加操作" onClick={addAction}><Plus className="h-4 w-4" /></Button>
+                    </div>
                   </div>
                 ))}
               </div>
@@ -2326,13 +2407,13 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, verifiedEmails, pen
             <div className="space-y-4">
               <RuleCheckbox checked={enabled} onCheckedChange={setEnabled} label="立即启用" />
               <RuleCheckbox checked={applyToExisting} onCheckedChange={setApplyToExisting} label="应用于现有邮件" />
-              <div className="flex items-center gap-2">
+              <div className="flex items-start gap-2">
                 <RuleCheckbox checked={stopProcessing} onCheckedChange={setStopProcessing} label="终止规则：命中此规则后不再应用其他规则" />
-                <Info className="h-4 w-4 text-muted-foreground" />
+                <Info className="mt-1 h-4 w-4 shrink-0 text-muted-foreground" />
               </div>
             </div>
           </div>
-          <DialogFooter className="gap-2 border-t px-4 py-4 sm:px-8 sm:py-5 [&>button]:w-full sm:[&>button]:w-auto">
+          <DialogFooter className="shrink-0 gap-2 border-t px-4 pb-[calc(1rem+env(safe-area-inset-bottom))] pt-4 sm:px-8 sm:py-5 [&>button]:min-h-11 [&>button]:w-full sm:[&>button]:min-h-9 sm:[&>button]:w-auto">
             <Button type="button" variant="outline" onClick={() => onOpenChange(false)}>取消</Button>
             <Button disabled={!canCreate}>{pending ? "保存中..." : initialRule ? "保存修改" : "创建"}</Button>
           </DialogFooter>
@@ -2342,7 +2423,7 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, verifiedEmails, pen
   )
 }
 
-function RuleActionValue({ action, labels, verifiedEmails, onChange }: { action: MailRuleAction; labels: MailLabel[]; verifiedEmails: string[]; onChange: (patch: Partial<MailRuleAction>) => void }) {
+function RuleActionValue({ action, folders, labels, verifiedEmails, onChange }: { action: MailRuleAction; folders: MailFolder[]; labels: MailLabel[]; verifiedEmails: string[]; onChange: (patch: Partial<MailRuleAction>) => void }) {
   if (action.type === "label") {
     if (labels.length > 0) {
       return (
@@ -2356,20 +2437,26 @@ function RuleActionValue({ action, labels, verifiedEmails, onChange }: { action:
   }
   if (action.type === "move") {
     const value = action.value || "Archive"
+    const customFolders = ruleCustomFolders(folders, value)
     return (
-      <div className="grid gap-2 md:grid-cols-[180px_minmax(0,1fr)]">
-        <Select value={commonRuleFolders.includes(value) ? value : "__custom"} onValueChange={(next) => onChange({ value: next === "__custom" ? "" : next })}>
-          <SelectTrigger><SelectValue /></SelectTrigger>
-          <SelectContent>
+      <Select value={value} onValueChange={(next) => onChange({ value: next })}>
+        <SelectTrigger className="h-11 md:h-9"><SelectValue placeholder="选择文件夹" /></SelectTrigger>
+        <SelectContent>
+          <SelectGroup>
+            <SelectLabel className="text-xs font-medium text-muted-foreground">系统文件夹</SelectLabel>
             <SelectItem value="Inbox">收件箱</SelectItem>
             <SelectItem value="Archive">归档</SelectItem>
             <SelectItem value="Spam">垃圾邮件</SelectItem>
-            <SelectItem value="Trash">回收站</SelectItem>
-            <SelectItem value="__custom">自定义文件夹</SelectItem>
-          </SelectContent>
-        </Select>
-        <Input value={value} onChange={(event) => onChange({ value: event.target.value })} placeholder="输入或选择文件夹名" />
-      </div>
+            <SelectItem value="Trash">已删除</SelectItem>
+          </SelectGroup>
+          <SelectSeparator />
+          <SelectGroup>
+            <SelectLabel className="text-xs font-medium text-muted-foreground">自定义文件夹</SelectLabel>
+            {customFolders.map((folder) => <SelectItem key={folder} value={folder}>{folder}</SelectItem>)}
+            {customFolders.length === 0 && <div className="px-2 py-2 text-sm text-muted-foreground">暂无自定义文件夹</div>}
+          </SelectGroup>
+        </SelectContent>
+      </Select>
     )
   }
   if (action.type === "forward") {
@@ -2378,6 +2465,14 @@ function RuleActionValue({ action, labels, verifiedEmails, onChange }: { action:
   return <Input value="无需填写" readOnly />
 }
 
+function ruleCustomFolders(folders: MailFolder[], selectedValue: string) {
+  const names = folders
+    .map((folder) => folder.name.trim())
+    .filter((name) => name && !commonRuleFolders.some((systemName) => systemName.toLowerCase() === name.toLowerCase()) && !["Sent", "Drafts"].some((systemName) => systemName.toLowerCase() === name.toLowerCase()))
+  if (selectedValue && !commonRuleFolders.includes(selectedValue) && !names.some((name) => name.toLowerCase() === selectedValue.toLowerCase())) names.push(selectedValue)
+  return Array.from(new Set(names)).sort((a, b) => a.localeCompare(b, "zh-CN", { numeric: true, sensitivity: "base" }))
+}
+
 function RuleForwardTargets({ value, emails, onChange }: { value: string; emails: string[]; onChange: (value: string) => void }) {
   const selected = React.useMemo(() => verifiedRuleForwardTargets(value, emails), [emails, value])
   return <ForwardingTargetPicker emails={emails} selected={selected} onChange={(targets) => onChange(targets.join(", "))} placement="top" />
@@ -2390,34 +2485,34 @@ function verifiedRuleForwardTargets(value: string, verifiedEmails: string[]) {
 
 function RuleCheckbox({ checked, onCheckedChange, label }: { checked: boolean; onCheckedChange: (checked: boolean) => void; label: string }) {
   const id = React.useId()
-  return <div className="flex items-center gap-3"><Checkbox id={id} checked={checked} onCheckedChange={(value) => onCheckedChange(value === true)} /><Label htmlFor={id} className="text-base font-medium">{label}</Label></div>
+  return <div className="flex min-w-0 items-start gap-3"><Checkbox id={id} className="mt-0.5" checked={checked} onCheckedChange={(value) => onCheckedChange(value === true)} /><Label htmlFor={id} className="text-sm font-medium leading-5 sm:text-base sm:leading-6">{label}</Label></div>
 }
 
-function RuleListItem({ item, index, count, pending, onEdit, onToggle, onMove, onApply, onDelete }: { item: MailRule; index: number; count: number; pending: boolean; onEdit: () => void; onToggle: () => void; onMove: (direction: "up" | "down") => void; onApply: () => void; onDelete: (id: string) => void }) {
+function RuleListItem({ item, index, count, mailboxLabel, pending, onEdit, onToggle, onMove, onApply, onDelete }: { item: MailRule; index: number; count: number; mailboxLabel: string; pending: boolean; onEdit: () => void; onToggle: () => void; onMove: (direction: "up" | "down") => void; onApply: () => void; onDelete: (id: string) => void }) {
   const [confirmOpen, setConfirmOpen] = React.useState(false)
   const conditionText = ruleConditionSummary(item.conditions, item.fromContains, item.subjectContains)
   const actionText = item.actions.map(ruleActionSummary).filter(Boolean).join("；") || "无动作"
-  const moveDirection = index === 0 ? "down" : "up"
-  const canMove = count > 1
   return (
-    <div className="grid min-h-[110px] grid-cols-[minmax(0,1fr)_auto] items-center gap-3 rounded-lg border bg-card px-4 py-4 transition-colors hover:bg-muted/20">
-      <div className="min-w-0 space-y-1">
-        <div className="flex min-w-0 items-center gap-2 leading-6">
-          <h3 className="truncate text-base font-semibold text-foreground">{item.name}</h3>
+    <div className="grid min-h-[110px] grid-cols-1 gap-3 rounded-lg border bg-card px-4 py-4 transition-colors hover:bg-muted/20 sm:grid-cols-[minmax(0,1fr)_auto] sm:items-center">
+      <div className="min-w-0 space-y-2 sm:space-y-1">
+        <div className="flex min-w-0 items-start gap-2 leading-6 sm:items-center">
+          <h3 className="min-w-0 flex-1 break-words text-base font-semibold text-foreground [overflow-wrap:anywhere] sm:truncate">{item.name}</h3>
           <span className={cn("shrink-0 rounded bg-emerald-100 px-1.5 py-0.5 text-xs font-medium", item.enabled ? "text-emerald-700" : "bg-muted text-muted-foreground")}>{item.enabled ? "已启用" : "已停用"}</span>
         </div>
-        <div className="grid text-sm leading-6 text-muted-foreground">
-          <p className="truncate"><span className="text-muted-foreground">条件：</span> {conditionText}</p>
-          <p className="truncate"><span className="text-muted-foreground">动作：</span> {actionText}</p>
+        <div className="grid gap-1 text-sm leading-5 text-muted-foreground sm:gap-0 sm:leading-6">
+          <p className="flex min-w-0 items-start gap-1"><span className="shrink-0">适用：</span><span className="min-w-0 break-words [overflow-wrap:anywhere] sm:truncate">{mailboxLabel}</span></p>
+          <p className="flex min-w-0 items-start gap-1"><span className="shrink-0">条件：</span><span className="min-w-0 break-words [overflow-wrap:anywhere] sm:truncate">{conditionText}</span></p>
+          <p className="flex min-w-0 items-start gap-1"><span className="shrink-0">动作：</span><span className="min-w-0 break-words [overflow-wrap:anywhere] sm:truncate">{actionText}</span></p>
         </div>
       </div>
-      <div className="flex shrink-0 items-center gap-1">
-        <Button type="button" variant="ghost" size="icon" className="size-7 text-muted-foreground" disabled={pending || !canMove} onClick={() => onMove(moveDirection)} aria-label={moveDirection === "up" ? "上移" : "下移"} title={moveDirection === "up" ? "上移" : "下移"}>{moveDirection === "up" ? <ChevronUp className="h-4 w-4" /> : <ChevronDown className="h-4 w-4" />}</Button>
+      <div className="flex shrink-0 items-center justify-end gap-1 border-t pt-3 sm:border-t-0 sm:pt-0">
+        <Button type="button" variant="ghost" size="icon" className="size-9 text-muted-foreground sm:size-7" disabled={pending || index === 0} onClick={() => onMove("up")} aria-label="上移" title="上移"><ChevronUp className="h-4 w-4" /></Button>
+        <Button type="button" variant="ghost" size="icon" className="size-9 text-muted-foreground sm:size-7" disabled={pending || index === count - 1} onClick={() => onMove("down")} aria-label="下移" title="下移"><ChevronDown className="h-4 w-4" /></Button>
         <span className="mx-1 h-6 w-px bg-border" />
-        <Button type="button" variant="ghost" size="icon" className={cn("size-7", item.enabled ? "text-emerald-600" : "text-muted-foreground")} disabled={pending} onClick={onToggle} aria-label={item.enabled ? "禁用规则" : "启用规则"} title={item.enabled ? "禁用规则" : "启用规则"}>{item.enabled ? <Bell className="h-4 w-4" /> : <BellOff className="h-4 w-4" />}</Button>
-        <Button type="button" variant="ghost" size="icon" className="size-7 text-muted-foreground" disabled={pending} onClick={onEdit} aria-label="编辑规则" title="编辑规则"><PencilLine className="h-4 w-4" /></Button>
-        <Button type="button" variant="ghost" size="icon" className="size-7 text-muted-foreground" disabled={pending} onClick={onApply} aria-label="应用到现有邮件" title="应用到现有邮件"><PlayCircle className="h-4 w-4" /></Button>
-        <Button variant="ghost" size="icon" className="size-7 shrink-0 text-destructive hover:bg-destructive/10 hover:text-destructive" disabled={pending} onClick={() => setConfirmOpen(true)} aria-label="删除规则" title="删除规则"><Trash2 className="h-4 w-4" /></Button>
+        <Button type="button" variant="ghost" size="icon" className={cn("size-9 sm:size-7", item.enabled ? "text-emerald-600" : "text-muted-foreground")} disabled={pending} onClick={onToggle} aria-label={item.enabled ? "禁用规则" : "启用规则"} title={item.enabled ? "禁用规则" : "启用规则"}>{item.enabled ? <Bell className="h-4 w-4" /> : <BellOff className="h-4 w-4" />}</Button>
+        <Button type="button" variant="ghost" size="icon" className="size-9 text-muted-foreground sm:size-7" disabled={pending} onClick={onEdit} aria-label="编辑规则" title="编辑规则"><PencilLine className="h-4 w-4" /></Button>
+        <Button type="button" variant="ghost" size="icon" className="size-9 text-muted-foreground sm:size-7" disabled={pending} onClick={onApply} aria-label="应用到现有邮件" title="应用到现有邮件"><PlayCircle className="h-4 w-4" /></Button>
+        <Button variant="ghost" size="icon" className="size-9 shrink-0 text-destructive hover:bg-destructive/10 hover:text-destructive sm:size-7" disabled={pending} onClick={() => setConfirmOpen(true)} aria-label="删除规则" title="删除规则"><Trash2 className="h-4 w-4" /></Button>
       </div>
       <ConfirmDialog open={confirmOpen} title="删除收件规则？" description={`规则“${item.name}”将不再处理后续邮件。`} confirmText="删除规则" destructive onOpenChange={setConfirmOpen} onConfirm={() => { onDelete(item.id); setConfirmOpen(false) }} />
     </div>
@@ -2488,19 +2583,20 @@ function BlockedSection({ items, mailboxes, mailboxId, spamCount, onMailboxChang
     setDialogOpen(false)
   }
   return (
-    <div className="space-y-4">
-      <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
-        <div className="text-xs font-medium text-muted-foreground">共 {spamCount} 封垃圾邮件 · {items.length} 条发件人拦截规则</div>
-        <Button type="button" className="w-full sm:w-auto" onClick={() => setDialogOpen(true)}><Plus className="h-4 w-4" />新增拦截</Button>
-      </div>
-      <SettingsCard title="被拦截邮件" subtitle="发件人命中拦截规则后会进入垃圾邮件，规则可随时移除。" contentClassName="space-y-2">
+    <div>
+      <SettingsCard
+        title="拦截规则"
+        subtitle={`共 ${items.length} 条发件人规则 · 垃圾邮件 ${spamCount} 封`}
+        action={<Button type="button" onClick={() => setDialogOpen(true)}>新增拦截</Button>}
+        contentClassName="space-y-2"
+      >
         {items.map((item) => (
-          <div key={item.id} className="flex items-center justify-between gap-3 rounded-lg border bg-background p-3 transition-colors hover:bg-muted/40">
+          <div key={item.id} className="grid grid-cols-[minmax(0,1fr)_auto] items-center gap-3 rounded-lg border bg-background p-3 transition-colors hover:bg-muted/40">
             <div className="min-w-0">
-              <div className="truncate text-sm font-semibold text-foreground">{item.email}</div>
-              <div className="mt-0.5 truncate text-xs text-muted-foreground">{item.mailboxId ? mailboxes.find((m) => m.id === item.mailboxId)?.address : "全部邮箱"}{item.reason ? ` · ${item.reason}` : ""}</div>
+              <div className="break-all text-sm font-semibold leading-5 text-foreground">{item.email}</div>
+              <div className="mt-1 break-words text-xs leading-5 text-muted-foreground">{item.mailboxId ? mailboxes.find((m) => m.id === item.mailboxId)?.address : "全部邮箱"}{item.reason ? ` · ${item.reason}` : ""}</div>
             </div>
-            <Button variant="ghost" size="icon" className="size-8 shrink-0 text-destructive hover:bg-destructive/10 hover:text-destructive" onClick={() => setPendingConfirm({ title: "移除拦截规则？", description: `${item.email} 之后将不再被此规则拦截。`, confirmText: "移除规则", onConfirm: () => { onDelete(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
+            <Button variant="ghost" size="icon" className="size-8 shrink-0 text-destructive hover:bg-destructive/10 hover:text-destructive" aria-label={`移除拦截规则 ${item.email}`} title="移除拦截规则" onClick={() => setPendingConfirm({ title: "移除拦截规则？", description: `${item.email} 之后将不再被此规则拦截。`, confirmText: "移除规则", onConfirm: () => { onDelete(item.id); setPendingConfirm(null) } })}><Trash2 className="h-4 w-4" /></Button>
           </div>
         ))}
         {items.length === 0 && <EmptyState icon={<ShieldCheck />} text="没有被拦截的邮件" description="当前没有发件人拦截规则，所有邮件都会按正常规则投递。" />}
@@ -2727,13 +2823,13 @@ function StatsSummary({ stats }: { stats?: MailStats }) {
     { label: stats?.quotaBytes ? `容量 ${Math.min(stats.quotaUsedPct || 0, 999).toFixed(1)}%` : "容量", value: quotaLabel, icon: <BarChart3 className="h-4 w-4" />, tone: "bg-slate-100 text-slate-700" },
   ]
   return (
-    <div className="grid gap-3 sm:grid-cols-2 xl:grid-cols-5">
+    <div className="grid gap-3 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-5">
       {cards.map((card) => (
-        <Card key={card.label} className="shadow-[0_1px_2px_rgba(15,23,42,0.04)]">
-          <CardContent className="flex items-center gap-3 p-4">
+        <Card key={card.label} className="min-w-0 overflow-hidden shadow-[0_1px_2px_rgba(15,23,42,0.04)]">
+          <CardContent className="flex min-w-0 items-center gap-3 p-4">
             <div className={cn("flex size-9 shrink-0 items-center justify-center rounded-lg", card.tone)}>{card.icon}</div>
             <div className="min-w-0">
-              <div className="truncate text-xl font-semibold leading-6 text-foreground">{card.value}</div>
+              <div className="break-words text-lg font-semibold leading-6 text-foreground [overflow-wrap:anywhere]">{card.value}</div>
               <div className="mt-0.5 text-xs text-muted-foreground">{card.label}</div>
             </div>
           </CardContent>
@@ -2743,7 +2839,7 @@ function StatsSummary({ stats }: { stats?: MailStats }) {
   )
 }
 
-function CleanupButton({ icon, title, disabled, onClick }: { icon: React.ReactNode; title: string; disabled: boolean; onClick: () => void }) { return <Button variant="outline" className="h-auto justify-start p-4 text-left" disabled={disabled} onClick={onClick}><div className="mr-3 rounded-lg bg-muted p-2">{icon}</div><div className="font-medium">{title}</div></Button> }
+function CleanupButton({ icon, title, disabled, onClick }: { icon: React.ReactNode; title: string; disabled: boolean; onClick: () => void }) { return <Button variant="outline" className="min-h-[72px] w-full min-w-0 justify-start whitespace-normal px-4 py-3 text-left" disabled={disabled} onClick={onClick}><div className="mr-3 shrink-0 rounded-md bg-muted p-2">{icon}</div><div className="min-w-0 break-words font-medium leading-5">{title}</div></Button> }
 function MailboxSelect({ value, mailboxes, onChange }: { value: string; mailboxes: Mailbox[]; onChange: (value: string) => void }) { return <Select value={value} onValueChange={onChange}><SelectTrigger><SelectValue /></SelectTrigger><SelectContent><SelectItem value="all">全部邮箱</SelectItem>{mailboxes.map((m) => <SelectItem key={m.id} value={m.id}>{m.address}</SelectItem>)}</SelectContent></Select> }
 function Field({ label, children }: { label: string; children: React.ReactNode }) { return <div className="space-y-2"><Label>{label}</Label>{children}</div> }
 function EmptyState({ text, description, icon, action, className }: { text: string; description?: string; icon?: React.ReactNode; action?: React.ReactNode; className?: string }) {
@@ -2771,10 +2867,10 @@ function AccountHeader({ name, email, darkMode, onToggleTheme, onBack }: { name:
         <div className="min-w-0 truncate text-sm font-semibold leading-5">{displayName}</div>
       </div>
       <div className="flex shrink-0 items-center gap-2">
-        <Button type="button" variant="ghost" size="icon" className="size-[28px] rounded-md text-muted-foreground" onClick={onToggleTheme}>
+        <Button type="button" variant="ghost" size="icon" className="size-[28px] rounded-md text-muted-foreground" aria-label={darkMode ? "切换浅色模式" : "切换深色模式"} title={darkMode ? "浅色模式" : "深色模式"} onClick={onToggleTheme}>
           {darkMode ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
         </Button>
-        <Button type="button" variant="ghost" size="icon" className="size-[28px] rounded-md text-muted-foreground" onClick={onBack}>
+        <Button type="button" variant="ghost" size="icon" className="size-[28px] rounded-md text-muted-foreground" aria-label="返回邮箱" title="返回邮箱" onClick={onBack}>
           <ArrowLeft className="h-4 w-4" />
         </Button>
       </div>

apps/web/src/pages/register.tsx

@@ -13,6 +13,7 @@ import { useToast } from "@/hooks/use-toast"
 import { PasswordInput } from "@/components/ui/password-input"
 import { TurnstileBox } from "@/components/turnstile-box"
 import { validatePasswordConfirm } from "@/lib/validation"
+import { AuthError, AuthLoading } from "@/components/auth-states"
 
 export function RegisterPage() {
   const me = useMe()
@@ -57,8 +58,10 @@ export function RegisterPage() {
   })
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
   if (me.data?.user) return <Navigate to="/" replace />
+  if (publicSettings.isLoading) return <AuthLoading />
+  if (publicSettings.isError) return <AuthError message={publicSettings.error.message} onRetry={() => { void publicSettings.refetch() }} />
   return (
-    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+    <main className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
       <div className="w-full max-w-[420px]">
         <div className="mb-7 text-center">
           <h1 className="text-3xl font-semibold tracking-tight">NewSzxcn 邮箱</h1>
@@ -103,7 +106,6 @@ export function RegisterPage() {
               <div className="space-y-2">
                 <Label htmlFor="displayName" className="text-sm font-medium">显示名称</Label>
                 <Input id="displayName" name="displayName" autoComplete="name" required className="h-11 text-base" />
-                <p className="text-xs leading-5 text-muted-foreground">显示名称注册后不可自行修改，如需更换请联系管理员。</p>
               </div>
               <div className="space-y-2">
                 <Label htmlFor="password" className="text-sm font-medium">密码</Label>
@@ -130,6 +132,6 @@ export function RegisterPage() {
           </div>
         )}
       </div>
-    </div>
+    </main>
   )
 }

apps/web/vite.config.ts

@@ -1,19 +1,44 @@
 import path from "node:path"
 import react from "@vitejs/plugin-react"
-import { defineConfig } from "vite"
+import { defineConfig, loadEnv } from "vite"
 
-export default defineConfig({
-  plugins: [react()],
-  resolve: {
-    alias: {
-      "@": path.resolve(__dirname, "./src"),
+export default defineConfig(({ mode }) => {
+  const env = loadEnv(mode, process.cwd(), "")
+  const apiTarget = env.VITE_API_TARGET || "http://localhost:8080"
+
+  return {
+    plugins: [react()],
+    resolve: {
+      alias: {
+        "@": path.resolve(__dirname, "./src"),
+      },
     },
-  },
-  server: {
-    port: 5173,
-    proxy: {
-      "/api": "http://localhost:8080",
-      "/healthz": "http://localhost:8080",
+    server: {
+      port: 5173,
+      proxy: {
+        "/api": apiTarget,
+        "/healthz": apiTarget,
+      },
     },
-  },
+    build: {
+      rolldownOptions: {
+        output: {
+          codeSplitting: {
+            groups: [
+              {
+                name: "prosemirror",
+                test: /node_modules[\\/]prosemirror-/,
+                priority: 30,
+              },
+              {
+                name: "tiptap",
+                test: /node_modules[\\/]@tiptap/,
+                priority: 20,
+              },
+            ],
+          },
+        },
+      },
+    },
+  }
 })

deploy/all-in-one/Dockerfile

@@ -35,7 +35,7 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     ca-certificates tzdata sqlite3 supervisor nginx \
     postfix postfix-sqlite \
     dovecot-core dovecot-imapd dovecot-pop3d dovecot-lmtpd dovecot-sqlite ssl-cert \
-    rspamd
+    rspamd zstd openssl
 
 COPY --from=api-build /out/lanqin-api /usr/local/bin/lanqin-api
 COPY --from=web-build /src/apps/web/dist /usr/share/nginx/html

deploy/docker-compose.yml

@@ -5,6 +5,8 @@ services:
     environment:
       LANQIN_UPDATE_SERVICE_URL: http://updater:8080/v1/update
       LANQIN_UPDATE_SERVICE_TOKEN: ${LANQIN_UPDATE_TOKEN:-}
+      LANQIN_BACKUP_SOURCE_DIR: /backup-source
+      LANQIN_BACKUP_DIR: /backups
     ports:
       - "${LANQIN_HTTP_BIND:-80}:80"
       - "${LANQIN_SMTP_BIND:-25}:25"
@@ -17,6 +19,9 @@ services:
       - ./mail:/var/mail/vhosts
       - ./dkim:/var/lib/rspamd/dkim
       - ./certs:/certs:ro
+      - ./.env:/backup-source/.env:ro
+      - ./docker-compose.yml:/backup-source/docker-compose.yml:ro
+      - ./backups:/backups
     labels:
       com.centurylinklabs.watchtower.enable: "true"
       com.centurylinklabs.watchtower.scope: "newszxcn-email"

docs/BACKUP_RESTORE.md

@@ -0,0 +1,71 @@
+# NewSzxcn 完整备份与灾难恢复
+
+## 后台创建并推送到 Telegram
+
+1. 使用系统管理员登录 NewSzxcn 后台。
+2. 在“系统设置 -> 通知”绑定 Telegram Bot Token 和私聊 Chat ID，并发送测试通知。
+3. 打开“备份与恢复”。
+4. 在“定时备份与 Telegram 推送”中选择每 3、5、7、30 天，或填写 1 至 365 天的自定义周期。
+5. 备份 Chat ID 留空时沿用邮件通知私聊；也可以填写一个仅管理员可见的私有群组 Chat ID，将邮件通知与备份文件分开。Bot 必须已经加入该群组。
+6. 填写服务器公网 IP。备份密码可以自己输入，也可以点击“生成 24 位”；必须另外保存到 1Password 等密码管理器。
+7. 开启“自动创建并推送”，保存设置。
+8. 首次配置建议点击“创建备份”，勾选“完成后发送到 Telegram”，确认机器人能收到说明消息和 `.tar.zst.enc` 加密附件。
+
+Telegram 消息包含邮局域名、服务器 IP、系统版本、已有域名、管理员账号、普通用户账号、邮箱账号、文件大小、SHA-256 和恢复步骤。已有域名只列域名，不附加账号身份。
+
+消息不会包含管理员密码、用户密码或备份密码。数据库只保存登录密码哈希，不能反向读取明文；恢复后账号继续使用原登录密码。备份密码与加密附件也不应保存在同一个 Telegram 会话中。
+
+## 原服务器失联后的恢复
+
+准备一台新的 Debian 或 Ubuntu 服务器。先把 Telegram 中的加密附件原样上传到新服务器的 `/root/` 目录，请不要解压、修改或固定填写某个示例文件名。备份日期和版本号每次可能不同。
+
+确认文件已经上传后，首次执行官方脚本：
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh | sudo bash
+```
+
+脚本显示“尚未安装”管理菜单后，输入 `2`，选择“备份恢复”。在恢复完成后，以后需要管理系统时才使用 `ns` 打开管理菜单。
+
+在“尚未安装”菜单选择：
+
+```text
+==================================================
+          NewSzxcn Email 管理面板
+==================================================
+状态：尚未安装
+--------------------------------------------------
+1. 一键安装 NewSzxcn Email
+2. 备份恢复
+3. 退出
+==================================================
+```
+
+进入备份恢复菜单后，输入 `1` 选择“本地上传”。脚本会自动扫描 `/root/newszxcn-backup-*`：只有一份时直接选中；多份时按日期从新到旧显示为 `1、2、3` 等序号，输入对应序号，例如输入 `1` 恢复第 1 份。没有找到时才要求手动输入完整路径。选定后输入备份密码，脚本会检查压缩包路径、SQLite 完整性和必要目录，再启动服务。
+
+恢复完成后：
+
+1. 如果新服务器 IP 改变，更新邮件主机的 A/AAAA、邮件域名的 MX/SPF，以及服务商处的 PTR 记录。
+2. 检查 DKIM 和 DMARC；DKIM 私钥已随备份恢复，但 DNS 仍应核对。
+3. 检查 TLS 证书是否适用于当前主机名，必要时重新签发。
+4. 登录网页并测试收信、发信、IMAP、POP3 和 SMTP Submission。
+5. 打开“备份与恢复”，重新测试 Telegram 推送。
+
+## 备份内容
+
+完整备份包括 SQLite 数据库、附件、Maildir 原始邮件、DKIM 私钥、TLS 证书、`.env`、Compose 配置、版本清单和 SHA-256 校验文件。备份使用 Zstandard 压缩，并以 AES-256-CBC、PBKDF2 200000 次迭代和 SHA-256 加密。
+
+Telegram 适合保存体积较小的应急副本，不应作为唯一备份位置。超过 Telegram 发送上限的文件请从后台下载，并保存到 Google 云端硬盘、另一台服务器、对象存储或离线磁盘。
+
+## Google 云端硬盘
+
+后台“备份与恢复”支持将同一份加密备份保存到 Google 云端硬盘。系统只申请 `drive.file` 权限，只能管理由 NewSzxcn 创建的文件，不会读取云端硬盘中的其他文件。
+
+1. 在 Google Cloud Console 创建项目并启用 Google Drive API。
+2. 配置 OAuth 同意屏幕，再创建“Web 应用”类型的 OAuth 客户端。
+3. 授权重定向 URI 填写 `https://你的邮局域名/api/admin/backups/google-drive/callback`，必须与后台系统设置中的公开访问地址一致。
+4. 在后台填写 OAuth 客户端 ID、客户端密钥和云端文件夹名称，先保存或直接点击“连接 Google”。
+5. 在 Google 授权页面确认后会自动返回“备份与恢复”，状态显示“已连接”。
+6. 可开启“用于定时备份”，也可在创建备份或已有备份菜单中单独上传。
+
+OAuth 客户端密钥和刷新令牌会使用服务器内部密钥加密保存。Google 云端硬盘中只保存 `.tar.zst.enc` 加密备份，备份密码仍应单独保管。

docs/ISSUE_LEDGER.md

@@ -44,7 +44,7 @@
 | NSX-20260806-007 | 2026-08-06 | 已完成 | 前端/UI；后端/通知；部署运维/CI | 邮箱下拉层越界、验证码漏识别、邮件与版本通知链接样式 | S3 | v1.2.18 | 随 v1.2.18 发布 |
 | NSX-20260807-008 | 2026-08-07 | 已完成 | 前端/UI；邮件发送；部署运维/安装 | 全部邮箱写信无法选择发件邮箱且默认项错误，写信窗口过宽；安装管理员邮箱流程需明确 | S3 | v1.2.19 | 随 v1.2.19 发布 |
 | NSX-20260807-009 | 2026-08-07 | 已完成 | 部署运维/安装；文档；质量复核 | 一键安装主菜单未按安装状态区分，命令前置条件和状态显示需复核 | S2 | v1.2.19 | 随 v1.2.19 发布 |
-| NSX-20260807-010 | 2026-08-07 | 待验收 | 邮件投递；DKIM；部署运维；质量复核 | Rspamd 在域名密钥变化后继续使用旧私钥，导致外发邮件 DKIM 验证失败 | S2 | v1.2.19 | 已发布，待线上实发验收 |
+| NSX-20260807-010 | 2026-08-07 | 已完成 | 邮件投递；DKIM；部署运维；质量复核 | Rspamd 在域名密钥变化后继续使用旧私钥，导致外发邮件 DKIM 验证失败 | S2 | v1.2.19 | 随 v1.2.19 发布，线上 DKIM 已验收通过 |
 | NSX-20260807-011 | 2026-08-07 | 已完成 | 后端/通知；验证码识别；质量复核 | 邮件地址中的字母数字片段触发验证码候选冲突，导致 Telegram 不显示验证码与复制按钮 | S3 | v1.2.19 | 随 v1.2.19 发布 |
 | NSX-20260807-012 | 2026-08-07 | 已完成 | 前端/UI；域名管理；质量复核 | DNS 记录复制按钮把类型、名称和值拼成整行，无法直接粘贴到域名服务商对应字段 | S3 | v1.2.19 | 随 v1.2.19 发布 |
 | NSX-20260807-013 | 2026-08-07 | 已完成 | 邮件核心；前端/标签；数据迁移；质量复核 | 邮箱创建后没有常用默认标签，需要手动逐个建立 | S3 | v1.2.19 | 随 v1.2.19 发布 |
@@ -336,16 +336,16 @@
 | --- | --- |
 | 编号 | NSX-20260807-010 |
 | 日期 | 2026-08-07 |
-| 状态 | 待验收 |
+| 状态 | 已完成 |
 | 模块 | 邮件投递；DKIM；部署运维；质量复核 |
 | 现象 | Gmail 显示 SPF 和 DMARC 通过，但 NewSzxcn 发出的邮件 DKIM 验证失败；同内容的 NodeSeek 对照邮件三项认证均通过。 |
 | 诊断 | NewSzxcn 邮件的 relaxed 正文哈希与 Gmail 收到的 `bh` 精确一致，排除正文传输修改；邮件签名无法由当前 DNS 公钥验证，说明发信时使用了不同私钥。`key not secure` 仅表示 DNSSEC 未验证，TXT 分段也属于正常 DNS 表示。 |
 | 根因 | DKIM 同步任务会覆盖容器内密钥文件，但 Rspamd 已载入的签名密钥不会随文件替换自动更新，域名重建或密钥变化后可能继续使用内存中的旧私钥。 |
 | 实现 | DKIM 同步改为先比较密钥内容；相同密钥不再重复替换，密钥新增或变化后立即重新载入 Rspamd；后台 DNS 检查从“仅判断 DKIM 记录存在”升级为核对实际 `p=` 公钥，明确区分缺失与公钥不一致；新增密钥同步和 DNS 公钥匹配回归，并纳入 CI 与发布检查。 |
 | 兼容性 | 不轮换现有 DKIM 密钥、不修改 DNS；已有数据库、邮件和域名配置保持不变。 |
-| 测试结果 | DKIM 同步专项测试、DNS 公钥匹配测试、Go 全量测试与 vet、安装脚本回归均通过；线上仍需升级后重新发信，确认 Gmail 原始邮件显示 `dkim=pass`。 |
+| 测试结果 | DKIM 同步专项测试、DNS 公钥匹配测试、Go 全量测试与 vet、安装脚本回归均通过；线上 DKIM 已验收通过。 |
 | 目标版本 | v1.2.19 |
-| 发布状态 | 已随 v1.2.19 发布，待服务器升级后实发验收。 |
+| 发布状态 | 已随 v1.2.19 发布，线上 DKIM 已验收通过。 |
 
 ### 历史
 
@@ -354,6 +354,7 @@
 | 2026-08-07 | 用户提供 Gmail 原始邮件和 NodeSeek 对照邮件，完成正文哈希、签名公钥和认证结果比对。 |
 | 2026-08-07 | 完成 DKIM 密钥热更新修复和专项回归，等待服务器实发验收。 |
 | 2026-08-07 | 修复已随 v1.2.19 发布；保留待验收状态，需升级后确认 Gmail 原始邮件显示 `dkim=pass`。 |
+| 2026-08-08 | 用户确认 DKIM 已通过，状态流转为已完成。 |
 
 ## NSX-20260807-011
 

install.sh

@@ -28,6 +28,7 @@ NewSzxcn Email 管理命令
 
   menu        显示安装与运维菜单
   install     首次安装；已有安装会先完整备份再重新安装
+  restore     从完整备份目录或压缩包恢复到新服务器
   update      备份数据库并更新到最新版
   repair      检查并修复现有安装
   status      查看容器与健康状态
@@ -161,6 +162,25 @@ ensure_cli_alias() {
   success "快捷命令已创建：输入 ns 可打开管理菜单。"
 }
 
+ensure_cli_command() {
+  local source_dir tmp
+  [[ -x "${CLI_PATH}" ]] && return 0
+  install -d -m 0755 "$(dirname "${CLI_PATH}")"
+  source_dir="$(script_dir || true)"
+  if [[ -n "${BASH_SOURCE[0]:-}" && "${BASH_SOURCE[0]}" != /dev/fd/* && -f "${source_dir}/install.sh" ]]; then
+    install -m 0755 "${source_dir}/install.sh" "${CLI_PATH}"
+  else
+    tmp="$(mktemp)"
+    if ! curl -fsSL "${RAW_BASE}/install.sh" -o "${tmp}" || ! bash -n "${tmp}"; then
+      rm -f "${tmp}"
+      warn "未能安装管理命令；完成安装后可重新运行官方脚本修复。"
+      return 0
+    fi
+    install -m 0755 "${tmp}" "${CLI_PATH}"
+    rm -f "${tmp}"
+  fi
+}
+
 refresh_assets() {
   stage_assets
   apply_staged_assets
@@ -1077,6 +1097,277 @@ do_install() {
   warn "输入 ns 可打开管理菜单；输入 newszxcn-email guide 可查看邮箱后台配置指南。"
 }
 
+validate_restore_source() {
+  local source="$1"
+  [[ -f "${source}/.env" ]] || { warn "备份缺少 .env。"; return 1; }
+  [[ -f "${source}/docker-compose.yml" ]] || { warn "备份缺少 docker-compose.yml。"; return 1; }
+  [[ -s "${source}/data/lanqin.db" ]] || { warn "备份缺少数据库 data/lanqin.db。"; return 1; }
+  [[ -d "${source}/mail" ]] || { warn "备份缺少 mail 邮件目录。"; return 1; }
+  [[ -d "${source}/dkim" ]] || { warn "备份缺少 dkim 密钥目录。"; return 1; }
+  [[ -d "${source}/certs" ]] || { warn "备份缺少 certs 证书目录。"; return 1; }
+}
+
+validate_restore_database() {
+  local database="$1" result
+  if ! command -v sqlite3 >/dev/null 2>&1; then
+    log "正在安装 SQLite 校验工具..."
+    install_packages sqlite3
+  fi
+  result="$(sqlite3 "${database}" 'PRAGMA integrity_check;' 2>/dev/null || true)"
+  [[ "${result}" == "ok" ]] || { warn "备份数据库完整性检查未通过。"; return 1; }
+}
+
+locate_extracted_restore_root() {
+  local root="$1" candidate
+  if validate_restore_source "${root}" >/dev/null 2>&1; then
+    printf '%s' "${root}"
+    return 0
+  fi
+  candidate="$(find "${root}" -mindepth 1 -maxdepth 2 -type f -name .env -print -quit 2>/dev/null || true)"
+  [[ -n "${candidate}" ]] || return 1
+  candidate="$(dirname "${candidate}")"
+  validate_restore_source "${candidate}" >/dev/null 2>&1 || return 1
+  printf '%s' "${candidate}"
+}
+
+render_restore_menu() {
+  prompt_text '\n==================================================\n'
+  prompt_text '          NewSzxcn Email 备份恢复\n'
+  prompt_text '==================================================\n'
+  prompt_text '1. 本地上传\n'
+  prompt_text '2. 返回上一级\n'
+  prompt_text '==================================================\n'
+  prompt_text '请先将原始加密备份上传到新服务器的 /root/ 目录，不要解压。\n'
+  prompt_text '系统会自动检测 /root/ 目录中的 NewSzxcn 备份文件。\n'
+}
+
+do_restore_menu() {
+  local choice
+  render_restore_menu
+  choice="$(prompt_menu_choice "1" "2")" || return 1
+  case "${choice}" in
+    1) do_restore_backup ;;
+    2) success "已返回，未作任何修改。" ;;
+  esac
+}
+
+prompt_restore_password() {
+  local password="${LANQIN_RESTORE_PASSWORD:-}"
+  if [[ -z "${password}" ]] && has_tty; then
+    read -r -s -p "备份密码: " password </dev/tty
+    printf '\n' >/dev/tty
+  fi
+  [[ -n "${password}" ]] || fail "加密备份必须提供备份密码。"
+  (( ${#password} >= 8 && ${#password} <= 1024 )) || fail "备份密码必须为 8 至 1024 个字符。"
+  [[ "${password}" != *$'\n'* && "${password}" != *$'\r'* ]] || fail "备份密码不能包含换行。"
+  printf '%s' "${password}"
+}
+
+discover_restore_backups() {
+  local search_dir="${LANQIN_RESTORE_SEARCH_DIR:-/root}" path
+  local -a matches=()
+  [[ -d "${search_dir}" ]] || return 0
+  while IFS= read -r path; do
+    case "${path}" in
+      *.tar.zst.enc|*.tar.zst|*.tar.gz|*.tgz|*.tar) matches+=("${path}") ;;
+    esac
+  done < <(find "${search_dir}" -maxdepth 1 -type f -name 'newszxcn-backup-*' -print 2>/dev/null | LC_ALL=C sort -r)
+  (( ${#matches[@]} > 0 )) || return 0
+  printf '%s\n' "${matches[@]}"
+}
+
+select_restore_source() {
+  local selection="${LANQIN_RESTORE_SELECTION:-}" path index
+  local -a backups=()
+  while IFS= read -r path; do
+    [[ -n "${path}" ]] && backups+=("${path}")
+  done < <(discover_restore_backups)
+
+  if (( ${#backups[@]} == 1 )); then
+    prompt_text "[检测] 已找到备份：${backups[0]}\n"
+    printf '%s' "${backups[0]}"
+    return 0
+  fi
+  if (( ${#backups[@]} > 1 )); then
+    prompt_text "[检测] 在 /root/ 找到 ${#backups[@]} 份备份：\n"
+    for index in "${!backups[@]}"; do
+      prompt_text "$((index + 1)). ${backups[index]}\n"
+    done
+    prompt_text "$(( ${#backups[@]} + 1 )). 手动输入其他路径\n"
+    if [[ -z "${selection}" ]] && has_tty; then
+      read -r -p "请输入要恢复的备份序号 [1]: " selection </dev/tty
+    fi
+    selection="${selection:-1}"
+    if [[ "${selection}" =~ ^[0-9]+$ ]] && (( selection >= 1 && selection <= ${#backups[@]} )); then
+      prompt_text "[选择] 将使用第 ${selection} 份备份开始恢复。\n"
+      printf '%s' "${backups[selection-1]}"
+      return 0
+    fi
+    [[ "${selection}" == "$(( ${#backups[@]} + 1 ))" ]] || fail "备份序号无效。"
+  else
+    prompt_text "[提示] /root/ 目录没有检测到 NewSzxcn 备份，请手动输入路径。\n"
+  fi
+  if has_tty; then
+    read -r -p "备份文件完整路径: " path </dev/tty
+  else
+    path="${LANQIN_RESTORE_SOURCE:-}"
+  fi
+  printf '%s' "${path}"
+}
+
+archive_has_unsafe_paths() {
+  awk '
+    BEGIN { bad=0 }
+    {
+      if (substr($0, 1, 1) == "/") bad=1
+      count=split($0, parts, "/")
+      for (i=1; i<=count; i++) if (parts[i] == "..") bad=1
+    }
+    END { exit bad ? 0 : 1 }
+  '
+}
+
+archive_has_unsafe_types() {
+  awk '
+    BEGIN { bad=0 }
+    /^[[:space:]]*$/ { next }
+    {
+      type=substr($0, 1, 1)
+      if (type != "-" && type != "d") bad=1
+    }
+    END { exit bad ? 0 : 1 }
+  '
+}
+
+extract_restore_archive() {
+  local source="$1" destination="$2" password decrypted
+  case "${source}" in
+    *.tar.zst.enc)
+      command -v openssl >/dev/null 2>&1 || install_packages openssl
+      command -v zstd >/dev/null 2>&1 || install_packages zstd
+      password="$(prompt_restore_password)"
+      decrypted="${destination}/backup.tar.zst"
+      if ! openssl enc -d -aes-256-cbc -pbkdf2 -iter 200000 -md sha256 -in "${source}" -out "${decrypted}" -pass fd:3 3<<<"${password}" 2>/dev/null; then
+        fail "备份密码错误或加密备份已损坏。"
+      fi
+      if zstd -dc "${decrypted}" 2>/dev/null | tar -tf - | archive_has_unsafe_paths; then
+        fail "备份压缩包包含不安全路径，已拒绝恢复。"
+      fi
+      if zstd -dc "${decrypted}" 2>/dev/null | tar -tvf - | archive_has_unsafe_types; then
+        fail "备份压缩包包含链接或特殊文件，已拒绝恢复。"
+      fi
+      zstd -dc "${decrypted}" 2>/dev/null | tar -xf - -C "${destination}" \
+        || fail "加密备份无法解压，请检查文件和密码。"
+      rm -f "${decrypted}"
+      ;;
+    *.tar.zst)
+      command -v zstd >/dev/null 2>&1 || install_packages zstd
+      if zstd -dc "${source}" 2>/dev/null | tar -tf - | archive_has_unsafe_paths; then
+        fail "备份压缩包包含不安全路径，已拒绝恢复。"
+      fi
+      if zstd -dc "${source}" 2>/dev/null | tar -tvf - | archive_has_unsafe_types; then
+        fail "备份压缩包包含链接或特殊文件，已拒绝恢复。"
+      fi
+      zstd -dc "${source}" 2>/dev/null | tar -xf - -C "${destination}" \
+        || fail "Zstandard 备份无法解压。"
+      ;;
+    *.tar|*.tar.gz|*.tgz)
+      if tar -tf "${source}" | archive_has_unsafe_paths; then
+        fail "备份压缩包包含不安全路径，已拒绝恢复。"
+      fi
+      if tar -tvf "${source}" | archive_has_unsafe_types; then
+        fail "备份压缩包包含链接或特殊文件，已拒绝恢复。"
+      fi
+      tar -xf "${source}" -C "${destination}" || fail "备份压缩包无法解压。"
+      ;;
+    *)
+      fail "不支持的备份格式；请选择 .tar.zst.enc、.tar.zst、.tar.gz、.tgz 或 .tar。"
+      ;;
+  esac
+}
+
+do_restore_backup() {
+  local source="${LANQIN_RESTORE_SOURCE:-}" extracted="" restore_root staging image_ref image nginx_backup=""
+  ! installation_configured || fail "当前服务器已经存在安装配置；为防止覆盖运行数据，只能在空白新服务器执行完整恢复。"
+  [[ -n "${source}" ]] || source="$(select_restore_source)"
+  [[ -n "${source}" ]] || fail "请提供备份目录或备份压缩包路径。"
+  source="$(readlink -f "${source}" 2>/dev/null || true)"
+  [[ -e "${source}" ]] || fail "备份不存在：${source}"
+
+  if [[ -d "${source}" ]]; then
+    restore_root="${source}"
+  else
+    command -v tar >/dev/null 2>&1 || install_packages tar
+    extracted="$(mktemp -d)"
+    extract_restore_archive "${source}" "${extracted}"
+    restore_root="$(locate_extracted_restore_root "${extracted}" || true)"
+  fi
+  if [[ -z "${restore_root}" ]] || ! validate_restore_source "${restore_root}"; then
+    [[ -n "${extracted}" ]] && rm -rf "${extracted}"
+    fail "这不是可恢复的 NewSzxcn 完整备份。"
+  fi
+  if ! validate_restore_database "${restore_root}/data/lanqin.db"; then
+    [[ -n "${extracted}" ]] && rm -rf "${extracted}"
+    fail "备份数据库已损坏，未写入任何 NewSzxcn 数据。"
+  fi
+
+  staging="${INSTALL_DIR}.restore-staging-$(date -u +%Y%m%dT%H%M%SZ)"
+  [[ ! -e "${INSTALL_DIR}" || -z "$(find "${INSTALL_DIR}" -mindepth 1 -maxdepth 1 -print -quit 2>/dev/null)" ]] \
+    || fail "${INSTALL_DIR} 已有文件，已取消恢复以免覆盖数据。"
+  rm -rf "${staging}"
+  install -d -m 0700 "${staging}"
+  cp -a "${restore_root}/." "${staging}/"
+  [[ -n "${extracted}" ]] && rm -rf "${extracted}"
+  rm -rf "${INSTALL_DIR}"
+  mv "${staging}" "${INSTALL_DIR}"
+  chmod 0600 "${INSTALL_DIR}/.env"
+
+  if [[ -f "${NGINX_CONFIG}" ]]; then
+    nginx_backup="$(mktemp)"
+    cp -a "${NGINX_CONFIG}" "${nginx_backup}"
+  fi
+
+  if ! (
+    refresh_assets
+    ensure_update_token
+    ensure_admin_email_config
+    configure_runtime_bindings
+    ensure_docker
+    configure_firewall
+    prepare_directories
+    log "正在拉取恢复所需的 NewSzxcn Email 镜像..."
+    compose pull
+    image_ref="$(env_value LANQIN_IMAGE || true)"
+    image_ref="${image_ref:-ghcr.io/zxyszx/newszxcn-email:latest}"
+    image="$(docker image inspect --format '{{.Id}}' "${image_ref}" 2>/dev/null || true)"
+    [[ -n "${image}" ]] || fail "无法检查恢复数据库：镜像不存在。"
+    sqlite_integrity_check "${INSTALL_DIR}/data/lanqin.db" "${image}" || fail "备份数据库完整性检查未通过，服务未启动。"
+    log "备份检查通过，正在启动服务..."
+    compose up -d --remove-orphans
+    wait_for_health 90 || fail "恢复后的服务未通过健康检查，请执行 newszxcn-email logs。"
+    configure_web_mode
+  ); then
+    warn "恢复未完成，正在清理本次未成功的安装。"
+    compose down --remove-orphans >/dev/null 2>&1 || true
+    rm -rf "${INSTALL_DIR}"
+    if [[ -n "${nginx_backup}" && -f "${nginx_backup}" ]]; then
+      cp -a "${nginx_backup}" "${NGINX_CONFIG}"
+    elif [[ -f "${NGINX_CONFIG}" ]]; then
+      rm -f "${NGINX_CONFIG}"
+    fi
+    rm -f "${nginx_backup}"
+    if nginx -t >/dev/null 2>&1; then
+      systemctl reload nginx >/dev/null 2>&1 || true
+    fi
+    fail "恢复失败，原始备份文件未修改；修复问题后可重新执行备份恢复。"
+  fi
+  rm -f "${nginx_backup}"
+  ensure_cli_alias
+  generate_guide >/dev/null || warn "数据已恢复，但配置指南生成失败，可稍后执行 newszxcn-email guide。"
+  success "备份恢复完成：$(env_value LANQIN_PUBLIC_BASE_URL)"
+  warn "如果服务器 IP 已更换，请更新 A、MX、SPF、PTR，并重新检查 TLS 证书。"
+}
+
 do_update() {
   require_installation
   ensure_docker
@@ -1503,7 +1794,8 @@ render_uninstalled_menu() {
   prompt_text '状态：尚未安装\n'
   prompt_text '--------------------------------------------------\n'
   prompt_text '1. 一键安装 NewSzxcn Email\n'
-  prompt_text '0. 退出\n'
+  prompt_text '2. 备份恢复\n'
+  prompt_text '3. 退出\n'
   prompt_text '==================================================\n'
 }
 
@@ -1541,10 +1833,11 @@ do_menu() {
   local default_choice="2" public_url="" choice status version
   if ! installation_configured; then
     render_uninstalled_menu
-    choice="$(prompt_menu_choice "1" "1")" || return 1
+    choice="$(prompt_menu_choice "1" "3")" || return 1
     case "${choice}" in
-      0) success "已退出，未作任何修改。" ;;
+      3) success "已退出，未作任何修改。" ;;
       1) do_install ;;
+      2) do_restore_menu ;;
     esac
     return
   fi
@@ -1581,6 +1874,7 @@ if [[ "${LANQIN_SOURCE_ONLY:-false}" == "true" ]]; then
 fi
 
 if [[ "${EUID}" -eq 0 ]]; then
+  ensure_cli_command
   ensure_cli_alias
 fi
 
@@ -1588,6 +1882,7 @@ case "${COMMAND}" in
   help|-h|--help) usage ;;
   menu) require_root; require_curl; do_menu ;;
   install) require_root; require_curl; do_install ;;
+  restore) require_root; require_curl; do_restore_menu ;;
   update) require_root; require_curl; do_update ;;
   repair) require_root; require_curl; do_repair_install ;;
   status) require_root; require_curl; do_status ;;

pnpm-lock.yaml

@@ -81,8 +81,8 @@ importers:
         specifier: 2.1.1
         version: 2.1.1
       dompurify:
-        specifier: 3.4.12
-        version: 3.4.12
+        specifier: 3.4.13
+        version: 3.4.13
       lucide-react:
         specifier: ^0.468.0
         version: 0.468.0(react@18.3.1)
@@ -1022,8 +1022,8 @@ packages:
   dlv@1.1.3:
     resolution: {integrity: sha512-+HlytyjlPKnIG8XuRG8WvmBP8xs8P71y+SKKS6ZXWoEgLuePxtDoUEiH7WkdePWrQ5JBpE6aoVqfZfJUQkjXwA==}
 
-  dompurify@3.4.12:
-    resolution: {integrity: sha512-zQvGet8Z2sWbQhCmfFz/T5QWH2oBmjnqK3qvOjaqaNLrLEF912WamU+ohnTp0TCep/MFVHpdJuCZEdFOdTnEFg==}
+  dompurify@3.4.13:
+    resolution: {integrity: sha512-2vmYIoqjze2d+kakP8S/nS5shfsl587kzwEjcGlTdiksUVgFHnFCsLYDVj/JNqJVOQZGSYBTmuycv0PodwmnMQ==}
 
   electron-to-chromium@1.5.375:
     resolution: {integrity: sha512-ZWP5eB4BVPW/ZYo9252hQZHZ5XavtsTgpbhcmMmRwymavC5AsLWQWBPaKMeNd2LW0KGby5HPXvj7+sr4ta5j/Q==}
@@ -2447,7 +2447,7 @@ snapshots:
 
   dlv@1.1.3: {}
 
-  dompurify@3.4.12:
+  dompurify@3.4.13:
     optionalDependencies:
       '@types/trusted-types': 2.0.7
 

tests/install_test.sh

@@ -159,6 +159,8 @@ test_menu_rendering() (
   [[ "${output}" == *'NewSzxcn Email 管理面板'* ]] || fail_test "uninstalled menu title missing"
   [[ "${output}" == *'状态：尚未安装'* ]] || fail_test "uninstalled menu status missing"
   [[ "${output}" == *'1. 一键安装 NewSzxcn Email'* ]] || fail_test "uninstalled menu install action missing"
+  [[ "${output}" == *'2. 备份恢复'* ]] || fail_test "uninstalled menu restore action missing"
+  [[ "${output}" == *'3. 退出'* ]] || fail_test "uninstalled menu exit action missing"
   [[ "${output}" != *'更新系统'* ]] || fail_test "uninstalled menu exposes update action"
   [[ "${output}" != *'卸载服务'* ]] || fail_test "uninstalled menu exposes uninstall action"
 
@@ -186,12 +188,15 @@ test_menu_dispatch() (
   mkdir -p "${INSTALL_DIR}"
   prompt_text() { :; }
   do_install() { printf 'install\n' > "${action_file}"; }
+  do_restore_menu() { printf 'restore-menu\n' > "${action_file}"; }
 
   do_menu
   grep -Fq 'install' "${action_file}" || fail_test "uninstalled menu did not dispatch install"
-  if (LANQIN_MENU_ACTION=2 do_menu >/dev/null 2>&1); then
-    fail_test "uninstalled menu accepted unavailable update action"
-  fi
+  LANQIN_MENU_ACTION=2
+  do_menu
+  grep -Fq 'restore-menu' "${action_file}" || fail_test "uninstalled menu did not dispatch restore"
+  LANQIN_MENU_ACTION=3
+  do_menu >/dev/null
 
   printf 'LANQIN_PUBLIC_BASE_URL=https://mail.example.com\n' > "${INSTALL_DIR}/.env"
   printf 'services: {}\n' > "${INSTALL_DIR}/docker-compose.yml"
@@ -430,6 +435,144 @@ test_cli_alias_safety() (
   grep -Fq 'occupied' "${CLI_ALIAS_PATH}" || fail_test "existing ns command was overwritten"
 )
 
+test_restore_source_validation() (
+  local temp_dir
+  temp_dir="$(mktemp -d)"
+  mkdir -p "${temp_dir}/data" "${temp_dir}/mail" "${temp_dir}/dkim" "${temp_dir}/certs"
+  printf 'config\n' > "${temp_dir}/.env"
+  printf 'services: {}\n' > "${temp_dir}/docker-compose.yml"
+  sqlite3 "${temp_dir}/data/lanqin.db" 'CREATE TABLE restore_test (id INTEGER PRIMARY KEY);'
+  validate_restore_source "${temp_dir}" || fail_test "valid restore source rejected"
+  validate_restore_database "${temp_dir}/data/lanqin.db" || fail_test "valid restore database rejected"
+  printf 'damaged\n' > "${temp_dir}/data/lanqin.db"
+  if validate_restore_database "${temp_dir}/data/lanqin.db" >/dev/null 2>&1; then
+    fail_test "damaged restore database accepted"
+  fi
+  rm -f "${temp_dir}/data/lanqin.db"
+  if validate_restore_source "${temp_dir}" >/dev/null 2>&1; then
+    fail_test "restore source without database accepted"
+  fi
+)
+
+test_restore_menu_rendering_and_dispatch() (
+  local output action_file LANQIN_MENU_ACTION=1
+  action_file="$(mktemp)"
+  prompt_text() { printf '%b' "$1"; }
+  output="$(render_restore_menu)"
+  [[ "${output}" == *'NewSzxcn Email 备份恢复'* ]] || fail_test "restore menu title missing"
+  [[ "${output}" == *'1. 本地上传'* ]] || fail_test "restore local upload action missing"
+  [[ "${output}" == *'2. 返回上一级'* ]] || fail_test "restore back action missing"
+  [[ "${output}" == *'自动检测 /root/'* ]] || fail_test "restore automatic discovery hint missing"
+  prompt_text() { :; }
+  do_restore_backup() { printf 'restore\n' > "${action_file}"; }
+  do_restore_menu
+  grep -Fq 'restore' "${action_file}" || fail_test "restore menu did not dispatch local upload"
+  LANQIN_MENU_ACTION=2
+  do_restore_menu >/dev/null
+  unset LANQIN_MENU_ACTION
+)
+
+test_restore_backup_discovery() (
+  local temp_dir output selected
+  temp_dir="$(mktemp -d)"
+  LANQIN_RESTORE_SEARCH_DIR="${temp_dir}"
+  touch "${temp_dir}/unrelated.tar.zst.enc"
+  output="$(discover_restore_backups)"
+  [[ -z "${output}" ]] || fail_test "unrelated archive was discovered"
+
+  touch "${temp_dir}/newszxcn-backup-20260810-120000-1.2.30.tar.zst.enc"
+  selected="$(select_restore_source)"
+  assert_eq "${temp_dir}/newszxcn-backup-20260810-120000-1.2.30.tar.zst.enc" "${selected}" "single discovered restore backup"
+
+  touch "${temp_dir}/newszxcn-backup-20260812-120000-1.2.32.tar.zst.enc"
+  touch "${temp_dir}/newszxcn-backup-20260811-120000-1.2.31.tar.zst.enc"
+  output="$(discover_restore_backups)"
+  assert_eq "newszxcn-backup-20260812-120000-1.2.32.tar.zst.enc" "$(printf '%s\n' "${output}" | head -n 1 | xargs basename)" "newest restore backup ordering"
+  LANQIN_RESTORE_SELECTION=2
+  selected="$(select_restore_source)"
+  assert_eq "${temp_dir}/newszxcn-backup-20260811-120000-1.2.31.tar.zst.enc" "${selected}" "selected discovered restore backup"
+)
+
+test_encrypted_restore_archive() (
+  local temp_dir source_dir archive extracted password='RestorePassword123!'
+  temp_dir="$(mktemp -d)"
+  source_dir="${temp_dir}/source/newszxcn-email"
+  archive="${temp_dir}/newszxcn-backup.tar.zst.enc"
+  extracted="${temp_dir}/extracted"
+  mkdir -p "${source_dir}/data" "${source_dir}/mail" "${source_dir}/dkim" "${source_dir}/certs" "${extracted}"
+  printf 'config\n' > "${source_dir}/.env"
+  printf 'services: {}\n' > "${source_dir}/docker-compose.yml"
+  sqlite3 "${source_dir}/data/lanqin.db" 'CREATE TABLE restore_test (id INTEGER PRIMARY KEY);'
+  zstd() {
+    if [[ "$*" == '-q -c' ]]; then
+      gzip -c
+    elif [[ "$1" == '-dc' ]]; then
+      gzip -dc "$2"
+    else
+      return 1
+    fi
+  }
+  tar -C "${temp_dir}/source" -cf - newszxcn-email | zstd -q -c | \
+    openssl enc -aes-256-cbc -pbkdf2 -iter 200000 -md sha256 -out "${archive}" -pass fd:3 3<<<"${password}"
+  LANQIN_RESTORE_PASSWORD="${password}" extract_restore_archive "${archive}" "${extracted}"
+  validate_restore_source "${extracted}/newszxcn-email" || fail_test "encrypted restore archive extraction failed"
+)
+
+test_failed_full_restore_cleans_partial_install() (
+  local temp_dir source_dir archive password='RestorePassword123!'
+  temp_dir="$(mktemp -d)"
+  source_dir="${temp_dir}/source/newszxcn-backup"
+  archive="${temp_dir}/newszxcn-backup-20260812-120000-1.2.31.tar.zst.enc"
+  INSTALL_DIR="${temp_dir}/install"
+  NGINX_CONFIG="${temp_dir}/nginx/newszxcn.conf"
+  CERT_DIR="${temp_dir}/certs"
+  LANQIN_RESTORE_SOURCE="${archive}"
+  LANQIN_RESTORE_PASSWORD="${password}"
+  mkdir -p "${source_dir}/data" "${source_dir}/mail" "${source_dir}/dkim" "${source_dir}/certs" "$(dirname "${NGINX_CONFIG}")"
+  printf 'LANQIN_PUBLIC_BASE_URL=https://mail.example.com\n' > "${source_dir}/.env"
+  printf 'services: {}\n' > "${source_dir}/docker-compose.yml"
+  sqlite3 "${source_dir}/data/lanqin.db" 'CREATE TABLE restore_test (id INTEGER PRIMARY KEY);'
+  zstd() {
+    if [[ "$*" == '-q -c' ]]; then
+      gzip -c
+    elif [[ "$1" == '-dc' ]]; then
+      gzip -dc "$2"
+    else
+      return 1
+    fi
+  }
+  tar -C "${temp_dir}/source" -cf - newszxcn-backup | zstd -q -c | \
+    openssl enc -aes-256-cbc -pbkdf2 -iter 200000 -md sha256 -out "${archive}" -pass fd:3 3<<<"${password}"
+  refresh_assets() { return 0; }
+  ensure_update_token() { return 0; }
+  ensure_admin_email_config() { return 0; }
+  configure_runtime_bindings() { return 0; }
+  ensure_docker() { return 0; }
+  configure_firewall() { return 0; }
+  prepare_directories() { return 0; }
+  compose() {
+    case "$1" in
+      pull) return 1 ;;
+      down) return 0 ;;
+    esac
+    return 0
+  }
+  if (do_restore_backup >/dev/null 2>&1); then
+    fail_test "failed full restore unexpectedly succeeded"
+  fi
+  [[ ! -e "${INSTALL_DIR}" ]] || fail_test "failed restore left a partial installation"
+  [[ -f "${archive}" ]] || fail_test "failed restore removed the original encrypted backup"
+)
+
+test_restore_archive_path_validation() (
+  printf 'safe/path\n' | archive_has_unsafe_paths && fail_test "safe archive path rejected"
+  printf '../escape\n' | archive_has_unsafe_paths || fail_test "parent archive path accepted"
+  printf '/absolute\n' | archive_has_unsafe_paths || fail_test "absolute archive path accepted"
+  printf '%s\n' '-rw------- root/root 1 2026-08-12 00:00 safe' | archive_has_unsafe_types && fail_test "regular archive file rejected"
+  printf '%s\n' 'drwx------ root/root 0 2026-08-12 00:00 safe/' | archive_has_unsafe_types && fail_test "archive directory rejected"
+  printf '%s\n' 'lrwxrwxrwx root/root 0 2026-08-12 00:00 unsafe -> /etc' | archive_has_unsafe_types || fail_test "archive symlink accepted"
+)
+
 test_compose_runtime_image_pin() (
   local temp_dir calls
   temp_dir="$(mktemp -d)"
@@ -707,6 +850,12 @@ test_offline_database_backup
 test_guide_generation
 test_acme_cron_detection
 test_cli_alias_safety
+test_restore_source_validation
+test_restore_menu_rendering_and_dispatch
+test_restore_backup_discovery
+test_encrypted_restore_archive
+test_failed_full_restore_cleans_partial_install
+test_restore_archive_path_validation
 test_compose_runtime_image_pin
 test_update_snapshot_restore
 test_snapshot_restores_absent_optional_files