fix: 全站时间统一为北京时间(Asia/Shanghai)

新增 src/utils/datetime.ts 共享 formatBjTime 工具，
13 个页面(11后台+2前台) 的 toLocaleString/formatDate
改为显式北京时间。Dashboard.tsx 保留图表标签的
formatDate(split) 不受影响。

frontend/src/pages/admin/Achievement.tsx

@@ -11,6 +11,7 @@
 import React, { useState, useEffect, useCallback } from 'react';
 
 import { adminAPI } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 
 
@@ -1012,7 +1013,7 @@ const Achievement: React.FC = () => {
 
                       <div style={{ fontSize: '12px', color: '#8892B0', marginTop: '8px' }}>
 
-                        完成时间: {new Date(ach.completed_at).toLocaleString('zh-CN')}
+                        完成时间: {formatBjTime(ach.completed_at)}
 
                       </div>
 

frontend/src/pages/admin/Apps.tsx

@@ -1,6 +1,7 @@
 import { useState, useEffect, useCallback } from 'react';
 import { adminAPI } from '@/api';
 import './Apps.css';
+import { formatBjTime } from '@/utils/datetime';
 
 interface AIApp {
   id: string;
@@ -779,9 +780,9 @@ function AppDetailDrawer({ app, analytics, onClose, onAction }: {
 
           {/* Timestamps */}
           <div style={{ marginTop: '24px', fontSize: '13px', color: 'var(--color-text-tertiary)' }}>
-            <div>创建时间: {app.created_at ? new Date(app.created_at).toLocaleString('zh-CN') : '-'}</div>
-            <div>更新时间: {app.updated_at ? new Date(app.updated_at).toLocaleString('zh-CN') : '-'}</div>
-            {app.published_at && <div>发布时间: {new Date(app.published_at).toLocaleString('zh-CN')}</div>}
+            <div>创建时间: {app.created_at ? formatBjTime(app.created_at) : '-'}</div>
+            <div>更新时间: {app.updated_at ? formatBjTime(app.updated_at) : '-'}</div>
+            {app.published_at && <div>发布时间: {formatBjTime(app.published_at)}</div>}
           </div>
         </div>
 

frontend/src/pages/admin/Automation.tsx

@@ -1,5 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { adminAPI } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 interface AutomationTask {
   id: string;
@@ -270,7 +271,7 @@ const Automation: React.FC = () => {
   // Format time
   const formatTime = (ts: string) => {
     if (!ts) return '-';
-    try { return new Date(ts).toLocaleString('zh-CN'); }
+    try { return formatBjTime(ts); }
     catch { return ts; }
   };
 

frontend/src/pages/admin/Dashboard.tsx

@@ -1,6 +1,7 @@
 import React, { useState, useEffect } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { adminAPI } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 const SVGIcon: React.FC<{ children: React.ReactNode; size?: number }> = ({ children, size = 20 }) => (
   <svg width={size} height={size} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.8" strokeLinecap="round" strokeLinejoin="round">
@@ -226,12 +227,7 @@ const Dashboard: React.FC = () => {
     fetchData();
   }, []);
 
-  const formatDate = (d: string) => {
-    if (!d) return '-';
-    const dt = new Date(d);
-    if (isNaN(dt.getTime())) return d.slice(0, 19) || '-';
-    return dt.toLocaleDateString('zh-CN', { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
-  };
+  const formatDate = (d: string | null) => formatBjTime(d);
 
   const formatTokens = (n: number): string => {
     if (n >= 100000000) return (n / 100000000).toFixed(2) + '亿';
@@ -336,7 +332,7 @@ const Dashboard: React.FC = () => {
               </div>
             ))}
             <div style={{ marginTop: 12, fontSize: 11, color: '#6B7280', textAlign: 'center' }}>
-              服务器时间: {stats.server_time ? new Date(stats.server_time).toLocaleString('zh-CN') : '-'}
+              服务器时间: {stats.server_time ? formatBjTime(stats.server_time) : '-'}
             </div>
           </div>
         </div>

frontend/src/pages/admin/Developer.tsx

@@ -1,5 +1,6 @@
 import { useState, useEffect, useCallback } from 'react';
 import './Developer.css';
+import { formatBjTime } from '@/utils/datetime';
 
 const API_BASE = '/app/api';
 
@@ -216,7 +217,7 @@ export default function AdminDeveloper() {
 
   const fmtTime = (t: string | null) => {
     if (!t) return '-';
-    try { return new Date(t).toLocaleString('zh-CN'); } catch { return t; }
+    try { return formatBjTime(t); } catch { return t; }
   };
 
   const statusBadge = (status: string) => {

frontend/src/pages/admin/DeveloperTools.tsx

@@ -1,5 +1,6 @@
 import { useState, useEffect, useCallback } from 'react';
 import './Developer.css';
+import { formatBjTime } from '@/utils/datetime';
 
 const API_BASE = '/app/api';
 
@@ -169,7 +170,7 @@ export default function AdminDeveloperTools() {
 
   const fmtTime = (t: string | null) => {
     if (!t) return '-';
-    try { return new Date(t).toLocaleString('zh-CN'); } catch { return t; }
+    try { return formatBjTime(t); } catch { return t; }
   };
 
   const statusBadge = (status: string) => {

frontend/src/pages/admin/ImBots.tsx

@@ -3,6 +3,7 @@ import React, { useState, useEffect, useCallback } from 'react';
 import {
   adminAPI,
 } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 // Platform icons (simple SVG representations)
 const platformIcons: Record<string, string> = {
@@ -329,7 +330,7 @@ const ImBots: React.FC = () => {
   // Format time
   const formatTime = (time: string) => {
     if (!time) return '-';
-    return new Date(time).toLocaleString('zh-CN');
+    return formatBjTime(time);
   };
 
   const tabs: { key: Tab; label: string; icon: string }[] = [

frontend/src/pages/admin/Mcp.tsx

@@ -1,5 +1,6 @@
 import React, { useState, useEffect, useCallback } from 'react';
 import { adminAPI } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 const styles: Record<string, React.CSSProperties> = {
   container: { padding: 24, backgroundColor: '#f5f7fa', minHeight: '100vh' },
@@ -277,7 +278,7 @@ export default function AdminMcp() {
               <td style={styles.td}>{getTransportBadge(s.transport_type)}</td>
               <td style={styles.td}>{getStatusBadge(s.status)}</td>
               <td style={styles.td}>{s.tools_count || '-'}</td>
-              <td style={styles.td}>{s.last_connected_at ? new Date(s.last_connected_at).toLocaleString() : '从未'}</td>
+              <td style={styles.td}>{s.last_connected_at ? formatBjTime(s.last_connected_at) : '从未'}</td>
               <td style={styles.td}>
                 <span style={{ ...styles.badge, backgroundColor: s.is_enabled ? '#dcfce7' : '#f3f4f6', color: s.is_enabled ? '#166534' : '#6b7280' }}>
                   {s.is_enabled ? '是' : '否'}

frontend/src/pages/admin/PrivacySettings.tsx

@@ -3,6 +3,7 @@
 import React, { useState, useEffect, useCallback } from 'react';
 
 import { adminAPI } from '@/api';
+import { formatBjTime } from '@/utils/datetime';
 
 
 
@@ -464,7 +465,7 @@ export default function PrivacySettings() {
 
 
 
-  const formatDate = (d: string | null) => d ? new Date(d).toLocaleString('zh-CN') : '-';
+  const formatDate = (d: string | null) => d ? formatBjTime(d) : '-';
 
 
 

frontend/src/pages/admin/Users.tsx

@@ -3,6 +3,7 @@ import { adminAPI } from '@/api';
 import { mockUsers, mockMembershipPlans } from '@/mock/data';
 import type { User, RegisterSettings } from '@/types';
 import './Users.css';
+import { formatBjTime } from '@/utils/datetime';
 
 // ===== SVG Icons =====
 const IconSearch = () => (
@@ -141,7 +142,7 @@ const UserDetailModal: React.FC<UserDetailModalProps> = ({ user, onClose }) => {
             </div>
             <div className="user-detail-item">
               <span className="detail-label">注册时间</span>
-              <span className="detail-value">{new Date(user.createdAt).toLocaleString('zh-CN')}</span>
+              <span className="detail-value">{formatBjTime(user.createdAt)}</span>
             </div>
           </div>
         </div>

frontend/src/pages/front/EvolutionDashboard.tsx

@@ -4,6 +4,7 @@ import type { EvolutionSkill, EvolutionEvent, EvolutionProfile, SkillTreeData, S
 import html2canvas from 'html2canvas';
 import jsPDF from 'jspdf';
 import './EvolutionDashboard.css';
+import { formatBjTime } from '@/utils/datetime';
 
 // ==================== SVG Icons ====================
 const Icon: React.FC<{ children: React.ReactNode; size?: number; className?: string }> = ({ children, size = 16, className }) => (
@@ -486,7 +487,7 @@ const TimelinePanel: React.FC<{
                 <p className="evo-timeline-desc">{event.description}</p>
                 <div className="evo-timeline-time">
                   <Icon size={12}><circle cx="12" cy="12" r="10"/><polyline points="12 6 12 12 16 14"/></Icon>
-                  {new Date(event.created_at).toLocaleString()}
+                  {formatBjTime(event.created_at)}
                 </div>
               </div>
             </div>

frontend/src/utils/datetime.ts

@@ -0,0 +1,9 @@
+// 后端按北京时间存储(无时区标记)，此处显式按 Asia/Shanghai 渲染，
+// 避免浏览器本地时区导致时间显示错乱。
+export function formatBjTime(t?: string | null): string {
+  if (!t) return '-';
+  const iso = /[Z+]/.test(t) ? t : t + '+08:00';
+  const d = new Date(iso);
+  if (isNaN(d.getTime())) return t;
+  return d.toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false });
+}