Dave bc72c5dc30 Fullscreen PWA: no border, installs as an app, works offline ...

- canvas fills the entire screen on any device; the 480x640 world is
  scaled to fit and bottom-aligned so the ground always sits on the
  bottom edge, with the sky painted full-bleed behind it
- the canvas buffer now always matches its laid-out size, so the drawing
  can never drift out of step with the screen
- HUD (score, badge, buffs, toasts, biome banner) moved to screen space
  so it stays pinned to the real screen edges
- sun and stars drawn in screen space so the sky above the play area is
  not empty
- PWA: manifest, service worker (offline), generated app icons and an
  in-game INSTALL APP button
- overlays now dim the whole screen, not just the game strip

2026-10-23 19:52:18 +02:00

3.9 KiB

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