# Meridian OS

A browser-based desktop environment designed to live inside a video game.
Elegant, restrained, gamer-literate — no AI-slop aesthetics, no emoji stuffing.

## Live Demo

```bash
git clone https://git.nuri.works/nuri-ai/meridian-os.git
cd meridian-os
./serve.sh           # Starts on http://localhost:8921
```

Open the URL, type any name to log in, start exploring.

## Features

- **Login screen** with persistent session (localStorage)
- **Six wallpapers** — Graphite, Ember, Tide, Vellum, Eclipse, Terminal — with crossfade transition
- **Window manager** — draggable, minimizable, closeable, cascading layout, focus-on-click
- **Taskbar** with launcher, active-app chips, and status bar (user initials, connection dot, live clock)
- **Widgets tray** — clock + date, active apps, achievements
- **Seven apps:**
  - Notepad (auto-save, word count)
  - Music Player (three tracks, play/pause/seek/volume)
  - Terminal (real commands + twelve gamer easter eggs)
  - Steam (spoof library with seven titles)
  - VS Code (spoof editor with fake TypeScript highlighting)
  - Postman (spoof request builder with fake responses)
  - Chrome (spoof browser-in-browser with shortcut tiles)
- **Achievement system** — ten achievements across Elden Ring, Call of Duty, and FIFA, unlocked through real usage

## Terminal Easter Eggs

Try these in the Terminal app:

| Command | Response |
| --- | --- |
| `praise_the_sun` | Elden Ring grace quote |
| `tarnished` | Elden Ring greeting |
| `try finger, but hole` | Dark Souls message joke |
| `siuuu` | FIFA celebration |
| `golazo` | FIFA broadcast line |
| `wonderkid` | FIFA career-mode regen joke |
| `dropshot` | CoD hitmarker |
| `360_noscope` | CoD montage ASCII |
| `mw2` | Classic callback |
| `konami` | Cheat code joke |
| `matrix` | ASCII rain animation |

All real commands work too: `help`, `ls`, `whoami`, `date`, `uname`, `echo`, `cat`, `clear`, `history`, `achievements`, `exit`.

## Architecture

```
index.html
├─ css/
│   ├─ tokens.css     Design tokens (colors, type, spacing)
│   ├─ reset.css
│   ├─ shell.css      Desktop, taskbar, login, wallpaper
│   ├─ window.css     Window chrome, resize, drag
│   └─ apps.css       Per-app styles (scoped by [data-app])
└─ js/
    ├─ main.js        Entry + app registration
    ├─ core/          state, auth, wm, registry, bus
    ├─ widgets/       clock, active-apps, achievements, wallpaper
    ├─ apps/          notepad, music, terminal, steam, vscode, postman, chrome
    └─ achievements/  catalog + engine
```

No build step. No frameworks. Vanilla JavaScript ES modules.

## Design Tokens

- Base: `#0f1114` (slate), `#1a1d21` (chrome), `#252a31` (elevated)
- Accent: `#d4a24c` (amber)
- Font: Inter 400 / 500 / 600
- Borders: 1px at 6–14% white
- No heavy shadows, no neon, no emoji in UI chrome

## Built With

This project was built using **frontier-planner-mode** — a delegation pattern
where a frontier model (Opus 4.7) handles architecture and decisions while an
on-prem executor (Qwen3.6-35B on MLX) handles heavy token generation. Roughly
93k output tokens of implementation were produced by the executor across three
parallel streams while the planner stayed in architect mode.

## License

Personal demo. Do what you want with it.