Initial commit: Luminary AI Gateway

OpenAI-compatible AI gateway with Vue admin UI, multi-provider egress,
ingress key governance, monitoring, and security controls.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/handler/static/handler.go

@@ -0,0 +1,63 @@
+package static
+
+import (
+	"embed"
+	"io/fs"
+	"mime"
+	"net/http"
+	"path/filepath"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+type Handler struct {
+	content embed.FS
+}
+
+func New(content embed.FS) *Handler {
+	return &Handler{content: content}
+}
+
+func (h *Handler) Register(r *gin.Engine) {
+	sub, err := fs.Sub(h.content, "dist")
+	if err != nil {
+		sub = h.content
+	}
+	r.NoRoute(func(c *gin.Context) {
+		if strings.HasPrefix(c.Request.URL.Path, "/api/") || strings.HasPrefix(c.Request.URL.Path, "/v1/") {
+			c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
+			return
+		}
+		h.serve(c, sub)
+	})
+	r.GET("/", func(c *gin.Context) { h.serve(c, sub) })
+	r.GET("/assets/*filepath", func(c *gin.Context) { h.serve(c, sub) })
+}
+
+func (h *Handler) serve(c *gin.Context, sub fs.FS) {
+	path := strings.TrimPrefix(c.Request.URL.Path, "/")
+	if path == "" {
+		path = "index.html"
+	}
+	data, err := fs.ReadFile(sub, path)
+	if err != nil {
+		data, err = fs.ReadFile(sub, "index.html")
+		if err != nil {
+			c.String(http.StatusNotFound, "UI not built. Run: make build-web")
+			return
+		}
+		path = "index.html"
+	}
+	ext := filepath.Ext(path)
+	ct := mime.TypeByExtension(ext)
+	if ct == "" {
+		ct = "text/html"
+	}
+	if strings.HasPrefix(path, "assets/") {
+		c.Header("Cache-Control", "public, max-age=31536000, immutable")
+	} else {
+		c.Header("Cache-Control", "no-cache")
+	}
+	c.Data(http.StatusOK, ct, data)
+}