Skip to content
LIVERun 001 capturing

ready / v1.0.0

Browser Mini Operating System

Build a fictional browser desktop with movable windows, utilities, shortcuts, themes, and persistent workspace state.

Open exact prompt

Overview

Test system-wide interface consistency and coordinated interactive state.

Capabilities tested

  • complex state
  • window management
  • keyboard shortcuts
  • persistence
  • interaction architecture

Required outcome

A stable desktop workspace with multiple useful applications and persistent window state.

Requirements

functional

  • Desktop and dock or taskbar
  • Draggable and resizable windows
  • Minimize, maximize, and close
  • Search, notes, terminal, file explorer, and settings
  • Themes and keyboard shortcuts

ux

  • Clear window focus
  • Usable small-screen fallback
  • Accessible controls

technical

  • Persistent window state
  • Bounded window positions
  • Production build must succeed

Constraints

Allowed

  • Local persistence
  • Fictional files and terminal output
  • Established framework utilities

Forbidden

  • Dead desktop controls
  • Unbounded off-screen windows
  • External desktop emulators

Acceptance criteria

  • Windows can be moved, resized, focused, minimized, maximized, and closed
  • Core apps perform meaningful local actions
  • State survives a reload
  • Keyboard shortcuts are discoverable and work

Evidence required

  • Production build output
  • Window interaction recording
  • Reload persistence evidence
  • Known-bug list

Exact prompt

prompts/challenges/browser-mini-os.md
# BuildArena Challenge

Role: Senior frontend product engineer.

Project: Browser Mini Operating System v1.0.0

Objective: Build a fictional browser desktop that demonstrates coherent, persistent multi-window interaction.

Required outcome: Desktop, dock or taskbar, draggable and resizable windows, minimize/maximize/close, search, notes, terminal, file explorer, settings, themes, keyboard shortcuts, and persistent window state.

Build order: Inspect the environment; build window focus and movement; prove resize/minimize/maximize/close; add useful applications; add persistence, themes, and shortcuts; run production validation.

Verification: Run package scripts and verify a multi-window workflow, state after reload, keyboard shortcuts, narrow-screen behavior, and console output.

Evidence to return: Commands, test results, interaction recording, known bugs, missing requirements, human intervention, final commit, and deployment URL only when authorized.