onepage-by-spec is a static single-file browser start page built by writing a precise spec first and letting an LLM generate the implementation. The result is a keyboard-driven homepage with configurable bookmarks, a command bar for quick searches, and lightweight widgets -- all in one self-contained HTML file you can drop in your browser's new-tab slot or serve from a Raspberry Pi.
The entire page is a single HTML file with inline CSS and vanilla JavaScript -- no build step, no npm, no server required. The keyboard command bar intercepts key presses and dispatches to bookmarks, search engines, or widget actions. Configuration lives in a small JSON block at the top of the file. The original spec sits alongside the generated file, so the intended behaviour is easy to compare with the implementation.
Type a shortcut to jump to a bookmark, trigger a search, or toggle a widget -- no mouse required for common actions.
Configure any number of search engines with short prefixes -- g query for Google, gh query for GitHub, etc.
Organise bookmarks into labelled groups displayed as a clean grid -- customise via the JSON config block.
No dependencies, no build step -- copy one file to serve it from anywhere, including a browser file:// URL.
Written to demonstrate LLM spec methodology -- the original spec is included alongside the generated code.