Nebula HDR screensaver 4.11.0

More nebula, smoother performance: • Nebulas fill the frame more often instead of drifting to bare starfield, and their faint outer gas reads instead of fading to black • The bright edge that defines a nebula mass is wider, more textured, and less regularly shaped — mottled gas rather than a thin bright ribbon • Showpiece galaxies are skipped entirely when none is in view, and the distant star layer stops twinkling — the reclaimed frame time goes into gas resolution • Finer zoom slider (20% per