wtf is burrow?

Burrow packs an entire coding setup into a single browser tab. Instead of installing a runtime, a terminal and an AI coding tool on your computer, you open a webpage and get all of it running right there, with nothing sent to any outside server. The project's trick is that it cannot actually run Bun, a JavaScript runtime, directly inside a browser, so instead it recreates the pieces that make a real dev machine feel real. It uses Bun's own code transpiler compiled to run in the browser, a shared virtual file system that the code editor, terminal and version control all read from and write to, and background browser workers that stand in for separate running processes. A special browser feature lets a program running inside the page act like a real web server you can open and click around in, as if it were hosted somewhere else. Inside the tab you get an interactive terminal with command history and tab completion, a code editor with a file browser and a live view of your uncommitted changes, the ability to run your code and see a live preview of any small web server you build, and a package manager that can download and install real packages from the npm registry. It also includes basic version control commands like cloning a project, committing changes and viewing history. A built in AI assistant runs a small language model directly on your computer's graphics card, using your browser rather than a cloud service. It can read your files, make edits, and run terminal commands on your behalf in a loop, similar to how AI coding assistants like Cursor work, except everything happens locally instead of over the internet. To run it yourself you need Bun installed, then a couple of commands starts a local development server you can open in your browser. The project is upfront that it is still young: some networking features, like raw database connections, are not yet supported.