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

backend/internal/models/k8s.go

@@ -3,7 +3,6 @@ package models
 import (
 	"time"
 
-	"gorm.io/gorm"
 )
 
 // K8sCluster K8s集群模型
@@ -29,12 +28,11 @@ type K8sCluster struct {
 	LastSyncAt   *time.Time     `json:"last_sync_at"`
 	CreatedAt    time.Time      `json:"created_at"`
 	UpdatedAt    time.Time      `json:"updated_at"`
-	DeletedAt    gorm.DeletedAt `gorm:"index" json:"-"`
 }
 
 // TableName 表名
 func (K8sCluster) TableName() string {
-	return "k8s_clusters"
+	return "container_clusters"
 }
 
 // K8sNode K8s节点模型
@@ -58,7 +56,6 @@ type K8sNode struct {
 	Labels       string         `gorm:"type:text" json:"labels"`
 	CreatedAt    time.Time      `json:"created_at"`
 	UpdatedAt    time.Time      `json:"updated_at"`
-	DeletedAt    gorm.DeletedAt `gorm:"index" json:"-"`
 
 	// 关联
 	Cluster *K8sCluster `json:"cluster,omitempty"`
@@ -85,7 +82,6 @@ type K8sPod struct {
 	Labels      string         `gorm:"type:text" json:"labels"`
 	CreatedAt   time.Time      `json:"created_at"`
 	UpdatedAt   time.Time      `json:"updated_at"`
-	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
 
 	// 关联
 	Cluster *K8sCluster `json:"cluster,omitempty"`
@@ -110,7 +106,6 @@ type K8sDeployment struct {
 	Labels            string         `gorm:"type:text" json:"labels"`
 	CreatedAt         time.Time      `json:"created_at"`
 	UpdatedAt         time.Time      `json:"updated_at"`
-	DeletedAt         gorm.DeletedAt `gorm:"index" json:"-"`
 
 	// 关联
 	Cluster *K8sCluster `json:"cluster,omitempty"`
@@ -135,7 +130,6 @@ type K8sService struct {
 	Labels     string         `gorm:"type:text" json:"labels"`
 	CreatedAt  time.Time      `json:"created_at"`
 	UpdatedAt  time.Time      `json:"updated_at"`
-	DeletedAt  gorm.DeletedAt `gorm:"index" json:"-"`
 
 	// 关联
 	Cluster *K8sCluster `json:"cluster,omitempty"`
@@ -159,7 +153,6 @@ type K8sIngress struct {
 	Labels    string         `gorm:"type:text" json:"labels"`
 	CreatedAt time.Time      `json:"created_at"`
 	UpdatedAt time.Time      `json:"updated_at"`
-	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
 
 	// 关联
 	Cluster *K8sCluster `json:"cluster,omitempty"`
@@ -202,3 +195,8 @@ type TopologyLayout struct {
 	CreatedAt  time.Time `json:"created_at"`
 	UpdatedAt  time.Time `json:"updated_at"`
 }
+
+// TableName 指定表名
+func (TopologyLayout) TableName() string {
+	return "container_topology_layouts"
+}