Serve embedded admin assets from root

pets-be/internal/admin/embed.go

@@ -31,6 +31,10 @@ func Register(r *gin.Engine) {
 				fileServer.ServeHTTP(c.Writer, c.Request)
 				return
 			}
+			if strings.HasPrefix(reqPath, "assets/") {
+				c.Status(http.StatusNotFound)
+				return
+			}
 		}
 		// SPA fallback
 		data, err := fs.ReadFile(sub, "index.html")
@@ -43,7 +47,7 @@ func Register(r *gin.Engine) {
 
 	r.GET("/", handler)
 	r.NoRoute(func(c *gin.Context) {
-		if c.Request.Method != http.MethodGet || strings.HasPrefix(c.Request.URL.Path, "/api/") || c.Request.URL.Path == "/api" || strings.HasPrefix(c.Request.URL.Path, "/assets/") {
+		if (c.Request.Method != http.MethodGet && c.Request.Method != http.MethodHead) || strings.HasPrefix(c.Request.URL.Path, "/api/") || c.Request.URL.Path == "/api" {
 			c.Status(http.StatusNotFound)
 			return
 		}