Changes made for this site
Original: "Light Up" from Simon Tatham's Portable Puzzle Collection
Copyright Simon Tatham and contributors - MIT licence, see LICENCE (copied unchanged).
Source repository: https://git.tartarus.org/simon/puzzles.git
  Audited source commit: 616da16f25da428ccda805536209095bd062676e (22 Sep 2026)
Runtime files: the author's official prebuilt web build, downloaded 2026-11-09 from
  https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/lightup.html, lightup.js, lightup.wasm
  Build version 20260923.616da16 (the site's source tarball for this build is
  puzzles-20260923.616da16.tar.gz, i.e. the commit above; files Last-Modified 23 Sep 2026;
  the page states "last modified on Wed Sep 23 01:41:23 2026").
- lightup.js and lightup.wasm: unchanged.
- index.html is the official lightup.html with these edits:
  * removed the page heading, the description text, the permalink links ("Link to this
    puzzle"), the links to the online manual and the main puzzles page, the e-mail address,
    the hosting thank-you link and the last-modified line, so nothing links off this site;
  * replaced the drag-to-resize box with the upstream "fit to container" element
    (id puzzlecanvascontain, as used by the official KaiOS build) and added CSS so the
    menu, puzzle and status bar fill the player frame on desktop and mobile;
  * kept the puzzle's own menu bar (Game, Type, New, Restart, Undo, Redo, Solve) unchanged;
  * the "WebAssembly not working" notice now overlays the puzzle while it loads;
  * added a viewport meta tag and a one-line credit with the copyright and a link to LICENCE;
  * the page title keeps the original name: "Light Up, from Simon Tatham's Portable Puzzle Collection".
- touch-input.js (new, written for this site, MIT): turns touch input on the puzzle canvas into
  the mouse input the puzzle expects - tap = left click, drag = left drag, press and hold
  = right button. Mouse and keyboard input are unchanged.
No game logic was changed.