- Composer prompt now has a blinking '>' caret (530ms VS Code-style) so
  it's obvious the chat input is focused and accepting keystrokes.
- New 'atlas vscode-setup' command patches the user's VS Code
  settings.json to release Ctrl+P / Ctrl+Shift+P / Ctrl+B / Ctrl+J /
  Ctrl+W / Ctrl+Shift+C from VS Code and forward them to the terminal.
  Idempotent JSONC-aware patcher with --dry-run and --path overrides.
  Cross-platform settings.json location (linux/macOS/windows).

Release: atlas-os@0.1.5