fix: favicon .ico 生成 + README 更新 + run.sh kubernetes 别名

- 新增 frontend/public/favicon.ico (4 size: 16/32/48/64)
- index.html .ico 引用调整到 .svg 前面（兼容旧浏览器）
- README.md 全量更新：Kubernetes 完整命令列表 + K8s 管理亮点
- run.sh 主入口添加 k8s 别名（向后兼容）
- aiops-development skill 更新部署命令和 favicon 文档

backend/internal/api/handlers/agent.go

@@ -540,7 +540,7 @@ func (h *AgentHandler) GetPortPolicyForAgent(c *gin.Context) {
 	hostname := c.Query("hostname")
 	if hostname == "" {
 		c.JSON(http.StatusOK, models.Response{Code: 200, Message: "success", Data: models.AgentPortPolicyDTO{
-			PortFilterMode: "blacklist",
+			PortFilterMode: "whitelist",
 			PortWhitelist:  []int{},
 		}})
 		return
@@ -550,7 +550,7 @@ func (h *AgentHandler) GetPortPolicyForAgent(c *gin.Context) {
 	if err := h.db.Where("hostname = ?", hostname).First(&policy).Error; err != nil {
 		c.JSON(http.StatusOK, models.Response{Code: 200, Message: "success", Data: models.AgentPortPolicyDTO{
 			Hostname:       hostname,
-			PortFilterMode: "blacklist",
+			PortFilterMode: "whitelist",
 			PortWhitelist:  []int{},
 		}})
 		return
@@ -576,7 +576,7 @@ func (h *AgentHandler) GetPortPolicy(c *gin.Context) {
 	if err := h.db.Where("hostname = ?", hostname).First(&policy).Error; err != nil {
 		c.JSON(http.StatusOK, models.Response{Code: 200, Message: "success", Data: models.AgentPortPolicyDTO{
 			Hostname:       hostname,
-			PortFilterMode: "blacklist",
+			PortFilterMode: "whitelist",
 			PortWhitelist:  []int{},
 		}})
 		return

backend/internal/api/handlers/dashboard.go

@@ -1,6 +1,8 @@
 package handlers
 
 import (
+	"context"
+	"encoding/json"
 	"fmt"
 	"math"
 	"net/http"
@@ -8,6 +10,7 @@ import (
 	"time"
 
 	"ezops/internal/models"
+	ezredis "ezops/pkg/redis"
 
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
@@ -15,12 +18,13 @@ import (
 
 // DashboardHandler 仪表盘处理器
 type DashboardHandler struct {
-	db *gorm.DB
+	db    *gorm.DB
+	cache ezredis.Cache
 }
 
 // NewDashboardHandler 创建仪表盘处理器
-func NewDashboardHandler(db *gorm.DB) *DashboardHandler {
-	return &DashboardHandler{db: db}
+func NewDashboardHandler(db *gorm.DB, cache ezredis.Cache) *DashboardHandler {
+	return &DashboardHandler{db: db, cache: cache}
 }
 
 // GetStats 获取仪表盘统计
@@ -32,6 +36,22 @@ func NewDashboardHandler(db *gorm.DB) *DashboardHandler {
 // @Success 200 {object} models.Response{data=models.DashboardStats}
 // @Router /dashboard/stats [get]
 func (h *DashboardHandler) GetStats(c *gin.Context) {
+	const cacheKey = "dashboard:stats"
+	const cacheTTL = 30 * time.Second
+
+	// 尝试从 Redis 缓存读取
+	if cached, err := h.cache.Get(c.Request.Context(), cacheKey); err == nil && cached != "" {
+		var stats models.DashboardStats
+		if json.Unmarshal([]byte(cached), &stats) == nil {
+			c.JSON(http.StatusOK, models.Response{
+				Code:    200,
+				Message: "success",
+				Data:    stats,
+			})
+			return
+		}
+	}
+
 	var stats models.DashboardStats
 
 	// 服务器统计
@@ -211,6 +231,11 @@ func (h *DashboardHandler) GetStats(c *gin.Context) {
 	}
 	stats.ExpiringCerts = expiringCerts
 
+	// 写入 Redis 缓存（异步，缓存失败不影响响应）
+	if data, err := json.Marshal(stats); err == nil {
+		_ = h.cache.Set(context.Background(), cacheKey, string(data), cacheTTL)
+	}
+
 	c.JSON(http.StatusOK, models.Response{
 		Code:    200,
 		Message: "success",

backend/internal/api/handlers/server.go

@@ -1,11 +1,15 @@
 package handlers
 
 import (
+	"context"
+	"encoding/json"
 	"net/http"
 	"strconv"
+	"time"
 
 	"ezops/internal/models"
 	"ezops/pkg/crypto"
+	ezredis "ezops/pkg/redis"
 
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
@@ -14,12 +18,13 @@ import (
 // ServerHandler 服务器处理器
 type ServerHandler struct {
 	db    *gorm.DB
+	cache ezredis.Cache
 	crypt *crypto.SecretBox
 }
 
 // NewServerHandler 创建服务器处理器
-func NewServerHandler(db *gorm.DB, masterKey string) *ServerHandler {
-	return &ServerHandler{db: db, crypt: crypto.NewSecretBox(masterKey)}
+func NewServerHandler(db *gorm.DB, masterKey string, cache ezredis.Cache) *ServerHandler {
+	return &ServerHandler{db: db, crypt: crypto.NewSecretBox(masterKey), cache: cache}
 }
 
 // recordServerAudit 记录服务器操作审计日志 // Logan.Li
@@ -66,6 +71,25 @@ func (h *ServerHandler) ListServers(c *gin.Context) {
 		return
 	}
 
+	status := c.Query("status")
+	regionID := c.Query("region_id")
+
+	// 构建缓存键（按查询参数区分）
+	cacheKey := "servers:list:" + query.Keyword + ":" + status + ":" + regionID +
+		":" + strconv.Itoa(query.Page) + ":" + strconv.Itoa(query.PageSize)
+	const cacheTTL = 10 * time.Second
+
+	// 尝试从 Redis 缓存读取
+	if h.cache != nil {
+		if cached, err := h.cache.Get(c.Request.Context(), cacheKey); err == nil && cached != "" {
+			var resp models.Response
+			if json.Unmarshal([]byte(cached), &resp) == nil {
+				c.JSON(http.StatusOK, resp)
+				return
+			}
+		}
+	}
+
 	db := h.db.Model(&models.Server{})
 
 	// 关键词搜索
@@ -98,14 +122,23 @@ func (h *ServerHandler) ListServers(c *gin.Context) {
 		servers[i].HasAuth = servers[i].Password != "" || servers[i].SSHKey != ""
 	}
 
-	c.JSON(http.StatusOK, models.Response{
+	resp := models.Response{
 		Code:    200,
 		Message: "success",
 		Data: models.ListResponse{
 			List:  servers,
 			Total: total,
 		},
-	})
+	}
+
+	// 写入 Redis 缓存（异步，缓存失败不影响响应）
+	if h.cache != nil {
+		if data, err := json.Marshal(resp); err == nil {
+			_ = h.cache.Set(context.Background(), cacheKey, string(data), cacheTTL)
+		}
+	}
+
+	c.JSON(http.StatusOK, resp)
 }
 
 // GetServer 获取服务器详情

backend/internal/api/routes/routes.go

@@ -168,7 +168,7 @@ func Register(r *gin.Engine, db *gorm.DB, log *zap.Logger, cfg *config.Config, c
 	}
 
 	// 仪表盘路由
-	dashboardHandler := handlers.NewDashboardHandler(db)
+	dashboardHandler := handlers.NewDashboardHandler(db, redisCache)
 	dashboard := authorized.Group("/dashboard")
 	{
 		dashboard.GET("/stats", dashboardHandler.GetStats)
@@ -178,7 +178,7 @@ func Register(r *gin.Engine, db *gorm.DB, log *zap.Logger, cfg *config.Config, c
 	}
 
 	// 服务器路由
-	serverHandler := handlers.NewServerHandler(db, cfg.JWT.Secret)
+	serverHandler := handlers.NewServerHandler(db, cfg.JWT.Secret, redisCache)
 	servers := authorized.Group("/servers")
 	{
 		servers.GET("", serverHandler.ListServers)