Extend Luma-style dark theme to two more Enact web overlays:
- com.webos.app.notificationcenter: dark pills, transparent
compositor, notification-specific components
- com.webos.app.gameoptimizer: same plus GameItem, GameButton,
GameSwitch, GamePanel custom components
Rename build.js → build.cjs (ESM compat) and update to build
all three themes from a single script.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>