Started building the mineral discovery and extraction system. I added resource types and two region generation algorithms — a basic one that creates simple contiguous regions and a more sophisticated generator that produces organic, overlapping resource distributions across asteroid surfaces. A RegionsOverlay renders the regions visually and a ResourcesDebug panel controls the generation parameters across all asteroids.

Set up Playwright for e2e testing with an asteroid screenshot test that captures the rendered asteroid for visual regression. Added .nvmrc for consistent Node versions.

Fixed build mode breaking after zoom-to-asteroid and added auto-zoom to the first asteroid on startup. Extracted selectAsteroidByName into its own state module.