Remove three mechanisms that intentionally degraded the screensaver over time, causing it to appear frozen after extended runtime: - Brightness dimming curve (faded palette to 30% over ~15min) - Projection framerate skip (reduced 3D updates from 24fps to 6fps) - Deep sleep after 2hr (dropped to 1fps) The clock drift and matrix text changes already provide adequate OLED burn-in protection. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>