wtf is bullet-journal?

This project is a digital bullet journal app that runs in your web browser and keeps all your data on your own computer instead of a company's server. A bullet journal is a note-taking system where you keep daily, monthly, and future logs, marking each entry as a task, a completed item, a note, or an event using small symbols, and this app is built around that system while adding a modern interface. Alongside the regular text logs, it includes a full drawing canvas called Excalidraw, so you can sketch out ideas, diagrams, or plans visually rather than only writing them as text, and the drawing area automatically matches whichever light, dark, or OLED theme you have chosen for the journal. The app also has small built-in extras, like a live clock and a mini calendar in the sidebar that shows which days have entries, letting you click through to jump straight to that day's log. A key part of the design is that it connects directly to a folder on your own computer using your browser's file access permissions, and everything you write is saved as plain Markdown files and Excalidraw drawing files, in a format meant to be compatible with the popular note-taking app Obsidian. It automatically keeps an index file updated as you add new logs and projects, so your notes stay organized inside a normal folder on your disk rather than being locked inside the app itself. To run it, you need Node.js installed on your computer. On Windows, you can simply double-click a launch file, which starts a small local server and opens the journal in its own app-like window in Chrome or Edge. On any other operating system, you start the same local server from a terminal and then open the address it gives you in a browser. According to the README, no data is sent to any external server or tracker, and everything stays either in the browser's local storage or in the folder you connect on your own disk. The README does not mention a license.