58568e2245
Per W3C spec, purpose: "monochrome" icons use only the alpha channel as the silhouette; RGB is ignored and replaced with the platform theme color. The previous monochrome-icon.png was a black-on-white RGB image with no alpha, so Safari (macOS PWAs) and Chrome (Android themed icons) treated every pixel as opaque and painted the whole 1024x1024 canvas with theme_color (#ffa4c0) - a solid pink tile. Regenerate as RGBA with the silhouette in alpha (derived from the favicon's alpha channel via a sharp-based helper script). Rename to monochromeicon.png to bust Safari's stuck PWA icon cache from prior broken installs.