feat: Agent采集uptime, 后端持久化kernel/uptime/diskIO, 前端磁盘BPS+IOPS展示

- Agent: system.go 添加 readUptime(), SystemStat 携带 Uptime
- Backend: Server 模型新增 Kernel 字段, ReceiveReport 持久化 kernel+uptime
- Backend: /agent/latest 返回 kernel/uptime/port_info/disk_io_info/disk_total
- Frontend: 磁盘监控改为 BPS+IOPS (4张卡片), 系统信息修复内核/运行时长/监听端口/磁盘容量
- 图表单位从 MB/s 改为 KB/s, 添加 formatBPS 工具函数

frontend/src/services/api.ts

@@ -136,16 +136,18 @@ export const serverApi = {
   batchDelete: async (ids: number[]) => {
     return http.post('/servers/batch-delete', { ids });
   },
-  batchCreate: async (data: { servers: any[]; region_id?: string; auth_type?: string }) => {
+  batchCreate: async (data: { servers: any[]; region_id?: string; auth_type?: string; credential_id?: number }) => {
     return http.post('/servers/batch', data);
   },
   getMetrics: async (id: number | string) => {
     // 后端暂无单机 metrics，用 dashboard metrics
     return http.get('/dashboard/metrics');
   },
-  // 远程安装 Agent（通过 SSH 执行安装脚本）
-  installAgent: async (id: number | string, token: string) => {
-    return http.post<{ installed: boolean; arch: string; output: string }>(`/servers/${id}/install-agent?token=${encodeURIComponent(token)}`);
+  // 远程安装 Agent（通过 SSH 执行安装脚本），可选传入凭据
+  installAgent: async (id: number | string, token: string, creds?: { username?: string; password?: string; ssh_key?: string; auth_type?: string }) => {
+    const body: any = { token };
+    if (creds) Object.assign(body, creds);
+    return http.post<{ installed: boolean; arch: string; output: string }>(`/servers/${id}/install-agent`, body);
   },
   // 批量远程安装 Agent
   batchInstallAgent: async (ids: number[], token: string) => {
@@ -491,8 +493,8 @@ export const agentApi = {
   listTasks: (params?: Record<string, string>) => http.get('/agent/tasks', params),
   // 直连 SSH 执行命令（即时返回）
   execCommand: (data: { hostname: string; command: string; timeout?: number }) => http.post('/agent/exec', data),
-  // K线聚合查询
-  getKline: (params: { hostname: string; metric: string; interval: string; from?: string; to?: string }) => http.get('/agent/kline', params),
+  // 聚合查询
+  getAggregate: (params: { hostname: string; metric: string; interval: string; from?: string; to?: string }) => http.get('/agent/aggregate', params),
   // 触发聚合
   aggregate: (data: { hostname: string; metric: string }) => http.post('/agent/aggregate', data),
   listRules: () => http.get('/agent/rules'),
@@ -500,6 +502,9 @@ export const agentApi = {
   updateRule: (id: number, data: any) => http.put(`/agent/rules/${id}`, data),
   deleteRule: (id: number) => http.delete(`/agent/rules/${id}`),
   quickSetup: (type?: string) => http.post('/agent/rules/quick-setup', { type: type || 'ecs' }),
+  // Agent 安装/卸载
+  uninstallAgent: (data: { hostname?: string; server_id?: number }) => http.post('/agent/uninstall', data),
+  batchUninstall: (serverIds: number[]) => http.post('/agent/batch-uninstall', { server_ids: serverIds }),
   listAlerts: (params?: Record<string, string>) => http.get('/agent/alerts', params),
   resolveAlert: (id: number) => http.post(`/agent/alerts/${id}/resolve`),
 };
@@ -833,3 +838,19 @@ export const aiApi = {
   // 清空当前用户对话历史
   clearHistory: () => http.delete('/aiops/chat-history'),
 };
+
+// ==================== 凭据管理 API（SSH密钥/API Token/密码） ==================== // Logan.Li
+export const credentialApi = {
+  list: () => http.get<{ list: any[]; total: number }>('/credentials'),
+  create: (data: { name: string; type: string; content: string; description?: string }) =>
+    http.post('/credentials', data),
+  update: (id: number | string, data: { name: string; type: string; content?: string; description?: string }) =>
+    http.put(`/credentials/${id}`, data),
+  delete: (id: number | string) => http.delete(`/credentials/${id}`),
+};
+
+// 服务器凭据关联 API
+export const serverCredentialApi = {
+  assign: (serverId: number | string, credentialId: number) =>
+    http.post(`/servers/${serverId}/assign-credential`, { credential_id: credentialId }),
+};