Built the core of meowOS today!!!
A fully working window manager in the browser. Windows are draggable, resizable, and stack correctly when focused.

4 apps so far:
Clock - live time and date
Text Editor - write and save notes, persists with localStorage
Terminal - commands like help, meow, echo, date
Settings - pick from 4 cat wallpapers, choice saves across sessions

Stack: Next.js, Tailwind, Zustand, react-rnd, react-icons.
Next up: File Explorer and Browser app.