chore: switch package license to proprietary

LICENSE

@@ -1,21 +1,19 @@
-MIT License
+All rights reserved.
 
 Copyright (c) 2026 Mummert
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+This source code is publicly visible for informational and deployment purposes only.
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+Permission is NOT granted to:
+- use this code for any commercial or non-commercial purpose
+- copy, modify, merge, publish, distribute, sublicense, or sell copies of the Software
+- use this code in any other project
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+Any use of this code without explicit written permission from the author is strictly prohibited.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

composer.json

@@ -2,7 +2,7 @@
   "name": "mummert/flipbook-bundle",
   "description": "PDF flipbook content element for Contao 5.7 using pdfjs-dist and flipbook-js.",
   "type": "contao-bundle",
-  "license": "MIT",
+  "license": "proprietary",
   "keywords": [
     "contao",
     "contao-bundle",