TiddlyInstall: A universal, reusable, install system

TiddlyInstall is a single HTML file that creates real installers for Windows, Linux, and macOS directly from GitHub repositories, handling dependencies and runtime management without requiring servers or bundlers. The system isolates each app with its own folder containing dependencies, preventing conflicts and simplifying uninstallation, and works entirely offline once saved to disk. It builds installers in three steps: pointing to a repository, automatically selecting compatible runtimes, and generating platform-specific executables (.exe, .run, .zip).