feat(rdp): 新增 RDP 远程桌面/SMB/账单同步能力 + 清理编译产物

主要变更：
- RDP 远程桌面：新增 backend/pkg/rdp（RDP 引擎 + credssp/display/rle/trace）、
  backend/controller/rdp*（连接/凭证/文件/会话/实时）、frontend RDP 组件与 API
- Windows SMB 文件传输：backend/pkg/winsmb
- 云账单同步：backend/pkg/billingsync + billing_sync/aliyun_billing，前端账单详情
- Agent CLI Kubernetes 工具：kubernetes_action/get、pod_execute/logs
- 服务器导入助手：server_import_helpers、ImportCredentialSettings
- 国际化与组件重构（cloud/deploy/monitor/server/system 等多模块）
- 清理编译产物二进制：移除 backend/server、backend/agent/bin/aiops-agent-*
- .gitignore：新增 backend/agent/ 与 .cache/（避免 334MB go-build 缓存误入库）

Co-Authored-By: Claude <noreply@anthropic.com>

backend/pkg/agentcli/tools/kubernetes_action.go

@@ -0,0 +1,131 @@
+// kubernetes_action.go - Kubernetes 集群变更操作（高风险，需用户确认） // Logan.Li
+package tools
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	k8sclient "ezops/pkg/kubernetesclient"
+)
+
+// KubernetesActionTool 执行 Kubernetes 变更动作 // Logan.Li
+type KubernetesActionTool struct {
+	client    *k8sclient.Client
+	namespace string
+}
+
+// NewKubernetesActionTool 创建变更工具 // Logan.Li
+func NewKubernetesActionTool(client *k8sclient.Client, namespace string) *KubernetesActionTool {
+	return &KubernetesActionTool{client: client, namespace: namespace}
+}
+
+// Name 工具名 // Logan.Li
+func (t *KubernetesActionTool) Name() string { return "kubernetes_action" }
+
+// Description 给 LLM 的说明 // Logan.Li
+func (t *KubernetesActionTool) Description() string {
+	return "对 Kubernetes 资源执行变更操作（高风险，需用户确认）。" +
+		"action 支持: restart_deployment, scale_deployment, update_image, restart_statefulset, delete_pod, suspend_cronjob。" +
+		"变更前请先用 kubernetes_get 确认当前状态。"
+}
+
+// Parameters JSON Schema // Logan.Li
+func (t *KubernetesActionTool) Parameters() map[string]interface{} {
+	return map[string]interface{}{
+		"type": "object",
+		"properties": map[string]interface{}{
+			"action": map[string]interface{}{
+				"type":        "string",
+				"description": "操作类型: restart_deployment|scale_deployment|update_image|restart_statefulset|delete_pod|suspend_cronjob",
+			},
+			"namespace": map[string]interface{}{
+				"type":        "string",
+				"description": "命名空间，默认会话绑定命名空间",
+			},
+			"name": map[string]interface{}{
+				"type":        "string",
+				"description": "资源名称（Deployment/StatefulSet/CronJob/Pod）",
+			},
+			"replicas": map[string]interface{}{
+				"type":        "integer",
+				"description": "scale_deployment 目标副本数",
+			},
+			"image": map[string]interface{}{
+				"type":        "string",
+				"description": "update_image 新镜像地址",
+			},
+			"container": map[string]interface{}{
+				"type":        "string",
+				"description": "update_image 目标容器名，可省略（默认第一个）",
+			},
+			"suspend": map[string]interface{}{
+				"type":        "boolean",
+				"description": "suspend_cronjob: true=暂停, false=恢复",
+			},
+		},
+		"required": []string{"action", "name"},
+	}
+}
+
+// RiskLevel 静态高风险 // Logan.Li
+func (t *KubernetesActionTool) RiskLevel() RiskLevel { return RiskHigh }
+
+// Execute 执行变更 // Logan.Li
+func (t *KubernetesActionTool) Execute(ctx context.Context, args map[string]interface{}) (*Result, error) {
+	action := strings.ToLower(strings.TrimSpace(StringParam(args, "action")))
+	name := strings.TrimSpace(StringParam(args, "name"))
+	ns := strings.TrimSpace(StringParam(args, "namespace"))
+	if ns == "" {
+		ns = t.namespace
+	}
+	if action == "" || name == "" {
+		return &Result{Success: false, Error: "action 和 name 不能为空"}, nil
+	}
+
+	var err error
+	var msg string
+	switch action {
+	case "restart_deployment":
+		err = t.client.RestartDeployment(ns, name)
+		msg = fmt.Sprintf("已触发 Deployment %s/%s 滚动重启", ns, name)
+	case "scale_deployment":
+		replicas := IntParam(args, "replicas")
+		if replicas < 0 {
+			return &Result{Success: false, Error: "replicas 不能为负数"}, nil
+		}
+		err = t.client.ScaleDeployment(ns, name, replicas)
+		msg = fmt.Sprintf("已将 Deployment %s/%s 扩缩容至 %d 副本", ns, name, replicas)
+	case "update_image":
+		image := strings.TrimSpace(StringParam(args, "image"))
+		if image == "" {
+			return &Result{Success: false, Error: "update_image 需要 image 参数"}, nil
+		}
+		container := strings.TrimSpace(StringParam(args, "container"))
+		err = t.client.UpdateDeploymentImage(ns, name, container, image)
+		msg = fmt.Sprintf("已更新 Deployment %s/%s 镜像为 %s", ns, name, image)
+	case "restart_statefulset":
+		err = t.client.RestartStatefulSet(ns, name)
+		msg = fmt.Sprintf("已触发 StatefulSet %s/%s 滚动重启", ns, name)
+	case "delete_pod":
+		err = t.client.DeletePod(ns, name)
+		msg = fmt.Sprintf("已删除 Pod %s/%s（控制器将视情况重建）", ns, name)
+	case "suspend_cronjob":
+		suspend := true
+		if v, ok := args["suspend"].(bool); ok {
+			suspend = v
+		}
+		err = t.client.SuspendCronJob(ns, name, suspend)
+		if suspend {
+			msg = fmt.Sprintf("已暂停 CronJob %s/%s", ns, name)
+		} else {
+			msg = fmt.Sprintf("已恢复 CronJob %s/%s", ns, name)
+		}
+	default:
+		return &Result{Success: false, Error: fmt.Sprintf("不支持的 action: %s", action)}, nil
+	}
+	if err != nil {
+		return &Result{Success: false, Error: fmt.Sprintf("操作失败: %v", err)}, nil
+	}
+	return &Result{Success: true, Output: msg}, nil
+}