chore: 官网拆分 homepage + 关于页瘦身 + 端口 5175（当前可用状态基线）

server/internal/server/router.go

@@ -0,0 +1,71 @@
+package server
+
+import (
+	"os"
+	"strings"
+	"net/http"
+	"path/filepath"
+	"runtime"
+
+	"github.com/gin-gonic/gin"
+)
+
+func NewRouter() *gin.Engine {
+	r := gin.New()
+	_ = r.SetTrustedProxies(nil)
+	r.Use(gin.Logger(), gin.Recovery())
+
+	r.GET("/health", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"ok": true, "service": "opsxshell-site"})
+	})
+
+	// 官网/文档已拆分独立静态站(homepage/dist,构建见 tools/homepage-build);本地仅静态托管预览。
+	for _, dir := range []string{
+		os.Getenv("OPSXSHELL_HOMEPAGE"),
+		"../../homepage/dist",
+		"../homepage/dist",
+		"homepage/dist",
+	} {
+		if dir == "" {
+			continue
+		}
+		if st, err := os.Stat(dir); err == nil && st.IsDir() {
+			fs := http.FileServer(http.Dir(dir))
+			r.NoRoute(func(c *gin.Context) {
+				p := c.Request.URL.Path
+				if strings.HasPrefix(p, "/api/") {
+					c.JSON(http.StatusNotFound, gin.H{"error": "接口不存在"})
+					return
+				}
+				upath := strings.TrimPrefix(p, "/")
+				if upath != "" {
+					if st2, err2 := os.Stat(filepath.Join(dir, upath)); err2 == nil && st2.IsDir() {
+						c.Request.URL.Path = p + "/"
+					} else if !strings.Contains(filepath.Base(upath), ".") {
+						if _, err3 := os.Stat(filepath.Join(dir, upath+".html")); err3 == nil {
+							c.Request.URL.Path = p + ".html"
+						}
+					}
+				}
+				fs.ServeHTTP(c.Writer, c.Request)
+			})
+			break
+		}
+	}
+
+	// 可选安装包目录（磁盘，不进 embed）
+	if dir := downloadDir(); dir != "" {
+		r.Static("/download", dir)
+	}
+	return r
+}
+
+func downloadDir() string {
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		return ""
+	}
+	// .../apps/server/internal/server/router.go → ../../download
+	dir := filepath.Clean(filepath.Join(filepath.Dir(file), "..", "..", "download"))
+	return dir
+}