A launcher masks the icon it puts on the home screen, and the install manifest
advertised the bare whale favicon: an SVG mark drawn edge to edge on a
transparent canvas, with no tile and no background of its own. Handed to a
mask it loses its fins, and iOS reads no manifest icon at all, so an installed
Web App showed a generic tile.
Ship four rasters rendered from the desktop application tile: 192px and 512px
`any`, a 512px `maskable` whose artwork is scaled into the circle a platform
mask is guaranteed to show, and a 180px `apple-touch-icon`. Request
`display: standalone` so the phone keeps its status bar, and declare `png` in
the static MIME table so a launcher receives an image.
Agent Note: .agents/notes/implemented/feature/2026-10-13-web-install-icons-and-launch-display.md
EricMoin