fix: 修复前台4项问题(MCP列举/微信技能上限/Word资产栏/技能MCP反馈) + 同步容器live状态

- #549 平台MCP列举: 注入全量已启用MCP清单, AI不再凭空编造
- #550 微信Bot技能自动发现上限 15->300
- #551 知识库Word文档同步资产后Word栏可见 + 双向删除同步(assets/knowledge级联软删)
- #552 对话反馈实际使用的技能/MCP(used_mcp字段), 含历史消息序列化
- 同步容器内其他未提交live改动(im_bot_platform/TokenDashboard/WechatBot/ChatPage)

frontend/src/pages/front/AssetsPage.tsx

@@ -54,6 +54,7 @@ function mapFileTypeToLabel(ft: string): string {
   const mapping: Record<string, string> = {
     pdf: 'pdf', docx: 'word', doc: 'word', xlsx: 'excel', xls: 'excel',
     pptx: 'ppt', ppt: 'ppt', csv: 'txt', md: 'md', txt: 'txt',
+    word: 'word', excel: 'excel',
   };
   return mapping[ft] || 'other';
 }
@@ -399,7 +400,7 @@ const AssetsPage: React.FC = () => {
   const VALID_CATEGORIES = ['file', 'novel', 'image', 'video', 'audio', 'custom', 'other'];
   const normalizeAsset = (item: any): Asset => {
     const rawCat = item.category;
-    const ft = item.fileType || item.file_type || 'other';
+    const ft = mapFileTypeToLabel(item.fileType || item.file_type || 'other');
     let category = rawCat;
     if (!VALID_CATEGORIES.includes(category)) {
       category = (ft && ft !== 'other') ? 'file' : 'other';

frontend/src/pages/front/TokenDashboardPage.tsx

@@ -160,6 +160,37 @@ function getMediaStats(logs: TokenUsageLog[]) {
   return { imageCount, videoCount, imageTokens, videoTokens, models };
 }
 
+// 分页拉取全部 token 日志（后端 /logs 默认只返回 20 条，会导致前端上下翻页无法查看更早记录）。
+// 通过 page_size=100 循环拉取，直到不足一页为止。
+async function fetchAllTokenLogs(): Promise<TokenUsageLog[]> {
+  const all: any[] = [];
+  let page = 1;
+  let hasMore = true;
+  while (hasMore) {
+    const res = await tokenAPI.getLogs({ page_size: 100, page });
+    const rawLogs = (res.data as any)?.items || res.data || [];
+    if (!Array.isArray(rawLogs) || rawLogs.length === 0) {
+      hasMore = false;
+      break;
+    }
+    all.push(
+      ...rawLogs.map((item: any) => ({
+        ...item,
+        promptTokens: item.promptTokens ?? item.prompt_tokens ?? 0,
+        completionTokens: item.completionTokens ?? item.completion_tokens ?? 0,
+        totalTokens: item.totalTokens ?? item.total_tokens ?? 0,
+        modelName: item.modelName ?? item.model_name ?? '',
+        cost: item.cost ?? 0,
+        createdAt: item.createdAt ?? item.created_at ?? item.createdAt,
+        appName: item.appName ?? item.app_name ?? '',
+      }))
+    );
+    if (rawLogs.length < 100) hasMore = false;
+    else page += 1;
+  }
+  return all as TokenUsageLog[];
+}
+
 const TokenDashboardPage: React.FC = () => {
   const navigate = useNavigate();
   const [totalConsumed, setTotalConsumed] = useState(0);
@@ -178,28 +209,18 @@ const TokenDashboardPage: React.FC = () => {
       setLoading(true);
       setError(null);
       try {
-        const [overviewRes, balanceRes, logsRes] = await Promise.all([
+        const [overviewRes, balanceRes, allLogs] = await Promise.all([
           tokenAPI.getOverview(),
           tokenAPI.getBalance(),
-          tokenAPI.getLogs(),
+          fetchAllTokenLogs(),
         ]);
         setTotalConsumed(overviewRes.data?.total_used || overviewRes.data?.total_consumed || overviewRes.data?.totalConsumed || 0);
         setBalance(balanceRes.data?.balance || 0);
         // 从overview响应中获取服务器时间
         const serverTimeStr = overviewRes.data?.server_time || overviewRes.data?.serverTime || overviewRes.data?.current_time || overviewRes.data?.time || '';
         setServerTime(serverTimeStr);
-        // 兼容分页格式和直接数组两种返回格式
-        const rawLogs = (logsRes.data as any)?.items || logsRes.data || [];
-        // 兼容后端返回的 snake_case 字段名
-        setLogs(rawLogs.map((item: any) => ({
-          ...item,
-          promptTokens: item.promptTokens ?? item.prompt_tokens ?? 0,
-          completionTokens: item.completionTokens ?? item.completion_tokens ?? 0,
-          totalTokens: item.totalTokens ?? item.total_tokens ?? 0,
-          modelName: item.modelName ?? item.model_name ?? '',
-          cost: item.cost ?? 0,
-          createdAt: item.createdAt ?? item.created_at ?? item.createdAt,
-        })));
+        // 已拉取全部日志（fetchAllTokenLogs 内部循环分页），客户端可自由上下翻页
+        setLogs(allLogs);
       } catch (err: any) {
         setError(err.message || '数据加载失败');
       } finally {

frontend/src/pages/front/WechatBot.tsx

@@ -93,7 +93,16 @@ const WechatBot: React.FC = () => {
     }
   };
 
-  const formatTime = (t: string) => (t ? new Date(t).toLocaleString('zh-CN') : '-');
+  // 后端按北京时间(Asia/Shanghai)存储连接时间（无时区标记），前端统一按北京时间展示，
+  // 不受浏览器所在时区影响。
+  const formatTime = (t: string) => {
+    if (!t) return '-';
+    const iso = t.includes('T') ? t : t.replace(' ', 'T');
+    const withTz = iso.includes('+') || iso.includes('Z') ? iso : iso + '+08:00';
+    const d = new Date(withTz);
+    if (isNaN(d.getTime())) return t;
+    return d.toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false });
+  };
 
   return (
     <div style={{ minHeight: '100%', background: '#FFFFFF', color: '#1A1F36', padding: '32px' }}>