feat(frontend): 增强工作台快捷指令与仪表盘能力

补充快捷指令动态变量解析与编辑弹窗一键插入，
统一列表执行、粘贴到终端和批量发送的处理链路

扩展快捷命令右键菜单动作，并为文件面板新增
多根目录资源管理器式侧栏浏览体验

为首页 dashboard 增加当前用户与系统总览双视角的
实时会话指标展示，并同步更新相关知识库记录

packages/backend/src/dashboard/dashboard.controller.ts

@@ -6,7 +6,7 @@ const dashboardService = new DashboardService();
 export class DashboardController {
     async getSummary(req: Request, res: Response): Promise<void> {
         try {
-            const summary = await dashboardService.getSummary();
+            const summary = await dashboardService.getSummary(req.session.userId);
             res.status(200).json(summary);
         } catch (error: any) {
             console.error('[DashboardController] 获取仪表盘统计失败:', error);

packages/backend/src/dashboard/dashboard.repository.ts

@@ -3,7 +3,7 @@ import type {
     DashboardActionBreakdownItem,
     DashboardActivityTrendPoint,
     DashboardCountByType,
-    DashboardSummary,
+    DashboardStaticSummary,
     DashboardTopConnection,
 } from './dashboard.types';
 import type { AuditLogActionType } from '../types/audit.types';
@@ -75,7 +75,7 @@ const safeParseAuditDetails = (raw: string | null): ParsedAuditDetails | null =>
     }
 };
 
-export const getDashboardSummary = async (): Promise<DashboardSummary> => {
+export const getDashboardSummary = async (): Promise<DashboardStaticSummary> => {
     const db = await getDbInstance();
     const now = Math.floor(Date.now() / 1000);
     const since7d = now - (DASHBOARD_WINDOW_DAYS - 1) * DAY_IN_SECONDS;

packages/backend/src/dashboard/dashboard.service.ts

@@ -1,8 +1,32 @@
 import { getDashboardSummary } from './dashboard.repository';
 import type { DashboardSummary } from './dashboard.types';
+import { clientStates } from '../websocket/state';
+import { sshSuspendService } from '../ssh-suspend/ssh-suspend.service';
 
 export class DashboardService {
-    async getSummary(): Promise<DashboardSummary> {
-        return getDashboardSummary();
+    async getSummary(userId?: number): Promise<DashboardSummary> {
+        const summary = await getDashboardSummary();
+        const activeStates = Array.from(clientStates.values()).filter((state) => !state.isSuspendedByService);
+        const systemActiveSshSessions = activeStates.length;
+        const systemStatusStreams = activeStates.filter((state) => !!state.statusIntervalId).length;
+        const currentUserActiveSshSessions = typeof userId === 'number'
+            ? activeStates.filter((state) => state.ws.userId === userId).length
+            : 0;
+        const suspendedMetrics = sshSuspendService.getSessionMetrics(userId);
+
+        return {
+            ...summary,
+            liveMetrics: {
+                currentUser: {
+                    activeSshSessions: currentUserActiveSshSessions,
+                    suspendedSessions: suspendedMetrics.currentUserSuspendedSessions,
+                },
+                system: {
+                    activeSshSessions: systemActiveSshSessions,
+                    suspendedSessions: suspendedMetrics.totalSuspendedSessions,
+                    statusStreams: systemStatusStreams,
+                },
+            },
+        };
     }
 }

packages/backend/src/dashboard/dashboard.types.ts

@@ -35,7 +35,23 @@ export interface DashboardActionBreakdownItem {
     count: number;
 }
 
-export interface DashboardSummary {
+export interface DashboardCurrentUserLiveMetrics {
+    activeSshSessions: number;
+    suspendedSessions: number;
+}
+
+export interface DashboardSystemLiveMetrics {
+    activeSshSessions: number;
+    suspendedSessions: number;
+    statusStreams: number;
+}
+
+export interface DashboardLiveMetrics {
+    currentUser: DashboardCurrentUserLiveMetrics;
+    system: DashboardSystemLiveMetrics;
+}
+
+export interface DashboardStaticSummary {
     totals: DashboardTotals;
     sshOutcomes24h: DashboardSshOutcomes24h;
     connectionTypes: DashboardCountByType[];
@@ -43,3 +59,7 @@ export interface DashboardSummary {
     activityTrend7d: DashboardActivityTrendPoint[];
     topConnections: DashboardTopConnection[];
 }
+
+export interface DashboardSummary extends DashboardStaticSummary {
+    liveMetrics: DashboardLiveMetrics;
+}

packages/backend/src/ssh-suspend/ssh-suspend.service.ts

@@ -211,6 +211,28 @@ export class SshSuspendService extends EventEmitter {
     return sessionsInfo;
   }
 
+  getSessionMetrics(userId?: number): {
+    totalSuspendedSessions: number;
+    currentUserSuspendedSessions: number;
+  } {
+    let totalSuspendedSessions = 0;
+    let currentUserSuspendedSessions = 0;
+
+    for (const [ownerUserId, sessions] of this.suspendedSessions.entries()) {
+      const sessionCount = sessions.size;
+      totalSuspendedSessions += sessionCount;
+
+      if (typeof userId === 'number' && ownerUserId === userId) {
+        currentUserSuspendedSessions += sessionCount;
+      }
+    }
+
+    return {
+      totalSuspendedSessions,
+      currentUserSuspendedSessions,
+    };
+  }
+
   /**
    * 恢复指定的挂起会话。
    * @param userId 用户ID。
@@ -450,4 +472,4 @@ export class SshSuspendService extends EventEmitter {
 }
 
 // 单例模式导出
-export const sshSuspendService = new SshSuspendService();
+export const sshSuspendService = new SshSuspendService();