fix: 远程命令直连SSH(去轮询) + 去掉无用命令分类

frontend/src/services/api.ts

@@ -489,6 +489,8 @@ export const agentApi = {
   getHistory: (hostname: string, hours = 1) => http.get(`/agent/history/${hostname}?hours=${hours}`),
   createTask: (data: { hostname: string; type: string; command: string; timeout?: number }) => http.post('/agent/tasks', data),
   listTasks: (params?: Record<string, string>) => http.get('/agent/tasks', params),
+  // 直连 SSH 执行命令（即时返回）
+  execCommand: (data: { hostname: string; command: string; timeout?: number }) => http.post('/agent/exec', data),
   listRules: () => http.get('/agent/rules'),
   createRule: (data: any) => http.post('/agent/rules', data),
   updateRule: (id: number, data: any) => http.put(`/agent/rules/${id}`, data),