RokuLab v0.1.0-alpha.11

Shared Preview and Editor workspace.\n\n- Preview expands across the upper workspace\n- Dedicated right-side remote-control column\n- Monaco uses the complete region whenever Editor is active\n- Project, console, and Inspector remain stable\n- E2E geometry coverage for both workspace modes\n\nValidation: formatting, lint, typecheck, 18 unit/integration tests, workspace build, Windows packaging, and 5 sequential Electron E2E tests.\n\nWindows x64 portable SHA-256: 88F936F98F6F51CE20AEC122FFAD49F2CAE5EEDEC7E423D722016D2FB28AC789\n\nThe executable is currently unsigned.