🔥 移除旧密码重置审核系统 & ✨ 优化存储管理UI

后端改进：
- 移除需要管理员审核的密码重置请求功能
- 简化密码重置流程，直接使用邮件重置
- 删除 password_reset_requests 表及相关代码

前端优化：
- 重新设计存储管理界面，采用现代化渐变风格
- 改进存储方式切换交互，添加动画效果
- 优化视觉层次和信息展示

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

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

frontend/app.js

@@ -113,9 +113,6 @@ createApp({
       resetPwdUser: {},
       newPassword: '',
 
-      // 密码重置审核
-      passwordResetRequests: [],
-
       // 文件审查
       showFileInspectionModal: false,
       inspectionUser: null,
@@ -213,7 +210,11 @@ createApp({
       uploadingTool: false, // 是否正在上传工具
 
       // 强制显示SFTP配置（用于本地存储模式下临时显示SFTP配置）
-      forceSftpConfigVisible: false
+      forceSftpConfigVisible: false,
+
+      // 存储切换状态
+      storageSwitching: false,
+      storageSwitchTarget: null
     };
   },
 
@@ -1692,44 +1693,6 @@ handleDragLeave(e) {
       }
     },
 
-    // ===== 管理员：密码重置审核 =====
-
-    async loadPasswordResetRequests() {
-      try {
-        const response = await axios.get(`${this.apiBase}/api/admin/password-reset/pending`, {
-          headers: { Authorization: `Bearer ${this.token}` }
-        });
-
-        if (response.data.success) {
-          this.passwordResetRequests = response.data.requests;
-        }
-      } catch (error) {
-        console.error('加载密码重置请求失败:', error);
-        this.showToast('error', '错误', '加载密码重置请求失败');
-      }
-    },
-
-    async reviewPasswordReset(requestId, approved) {
-      const action = approved ? '批准' : '拒绝';
-      if (!confirm(`确定要${action}这个密码重置请求吗？`)) return;
-
-      try {
-        const response = await axios.post(
-          `${this.apiBase}/api/admin/password-reset/${requestId}/review`,
-          { approved },
-          { headers: { Authorization: `Bearer ${this.token}` } }
-        );
-
-        if (response.data.success) {
-          this.showToast('success', '成功', response.data.message);
-          this.loadPasswordResetRequests();
-        }
-      } catch (error) {
-        console.error('审核失败:', error);
-        this.showToast('error', '错误', error.response?.data?.message || '审核失败');
-      }
-    },
-
     // ===== 管理员：文件审查功能 =====
 
     async openFileInspection(user) {
@@ -1876,10 +1839,30 @@ handleDragLeave(e) {
         return;
       }
 
-      if (!confirm(`确定要切换到${type === 'local' ? '本地存储' : 'SFTP存储'}吗？`)) {
+      if (this.storageSwitching || type === this.storageType) {
         return;
       }
 
+      // 切到SFTP但还未配置，引导去配置
+      if (type === 'sftp' && (!this.user?.has_ftp_config)) {
+        this.showToast('info', '需要配置SFTP', '请先填写SFTP信息再切换');
+        this.currentView = 'settings';
+        this.forceSftpConfigVisible = true;
+        if (this.user && !this.user.is_admin) {
+          this.loadFtpConfig();
+        }
+        this.$nextTick(() => {
+          const sftpSection = document.getElementById('sftp-config-section');
+          if (sftpSection) {
+            sftpSection.scrollIntoView({ behavior: 'smooth', block: 'start' });
+          }
+        });
+        return;
+      }
+
+      this.storageSwitching = true;
+      this.storageSwitchTarget = type;
+
       try {
         const response = await axios.post(
           `${this.apiBase}/api/user/switch-storage`,
@@ -1899,6 +1882,9 @@ handleDragLeave(e) {
       } catch (error) {
         console.error('切换存储失败:', error);
         this.showToast('error', '错误', error.response?.data?.message || '切换存储失败');
+      } finally {
+        this.storageSwitching = false;
+        this.storageSwitchTarget = null;
       }
     },
 
@@ -2308,7 +2294,6 @@ handleDragLeave(e) {
       } else if (newView === 'admin' && this.user?.is_admin) {
         this.loadUsers();
         this.loadSystemSettings();
-        this.loadPasswordResetRequests();
         this.loadServerStorageStats();
       } else if (newView === 'settings' && this.user && !this.user.is_admin) {
         // 普通用户进入设置页面时加载SFTP配置