отключил кэш

server/main.go

@@ -55,6 +55,8 @@ func main() {
 
 	// SPA: serve static files, fallback to index.html
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "no-store")
+
 		// Try to serve the file directly
 		path := strings.TrimPrefix(r.URL.Path, "/")
 		if path == "" {