V2 PWA manifest lacks an any-purpose launcher icon

Description

The V2 web manifest marks both launcher icons as maskable only. Chrome on Android offers “Add shortcut” rather than app installation.

Chromium's Page.getInstallabilityErrors reports manifest-missing-suitable-icon and no-acceptable-icon, even though both PNGs load successfully at 192×192 and 512×512. Overriding only their purpose to any maskable in an isolated Chromium browser makes that error list empty.

Plugins

Not applicable to the web manifest.

OpenCode version

0.0.0-beta-19151; also present on v2 at 7ad705225e52160e9956fb727ac7c0801b3ac979.

Steps to reproduce

1. Serve the V2 web UI over trusted HTTPS.
2. Inspect /site.webmanifest: both icons have "purpose": "maskable".
3. Check Chromium's Application/Manifest installability diagnostics, or call CDP Page.getInstallabilityErrors.
4. Change only the icon purposes to "any maskable" and reload; the icon errors disappear.

Chromium's required-icon check explicitly selects purpose ANY: https://chromium.googlesource.com/chromium/src/+/main/components/webapps/browser/installable/installable_evaluator.cc

Screenshot and/or share link

Diagnostic output: manifest-missing-suitable-icon, no-acceptable-icon; after the manifest override: []. No session data is needed to reproduce.

Operating System

Arch Linux server; Android Chrome user report; independently reproduced using Chromium on Linux.

Terminal

Not applicable.