The DigiSurvivor engine bundled in upstream/js/app.min.js derives from PokeSurvivor by JPTER78
(https://github.com/JPTER78/pokesurvivor). Upstream notice, retained as required:

MIT License

Copyright (c) 2026 JPTER78

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:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

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.

Other components (see upstream/LICENCIAS.original.html for the original text):
- DigiSurvivor custom code/text/art: all rights reserved by its authors; included here under the
  project owner's stated authorization, not under the MIT license.
- Pixelify PS font (modified Pixelify Sans): SIL Open Font License 1.1.
- Digimon names, sprites and data: property of Akiyoshi Hongo, Toei Animation, Bandai Namco. No license granted.