license and some functions

static/js/image-upload.js

@@ -1,3 +1,12 @@
+/*
+ * Copyright (C) 2026 Mateusz Gruszczyński @linuxiarz.pl
+ * Source-Available Code / Dual-Licensed.
+ * 
+ * Free for non-commercial and evaluation use under terms of BSL/GPLv3.
+ * Commercial or production use requires a valid paid license.
+ * See LICENSE file in repository root for details.
+ */
+
 function clamp(value, min, max) { return Math.min(max, Math.max(min, value)); }
 function stem(name) { return name.replace(/\.[^.]+$/, "") || "image"; }