Local development

Harmattan is a static web application.

Requirements

You need a modern browser, internet access for live weather requests, and a small local HTTP server.

Start locally

From the application repository:

python3 -m http.server 8000

Open:

http://localhost:8000

Main entry points:

/index.html   → Harmattan weather experience
/game.html    → 9jaRun

The source application has no npm build step. The VitePress build in this documentation repository is separate from the application runtime.