fix(mobile): keep Android adaptive icons within the safe area

[ryanrhughes]

What Changed

Android's adaptive mask was cutting off the T3 mark. Dev and preview used complete app artwork as their foreground, and the shared Android mark extended beyond the safe area.

Keep adaptive and monochrome icons. Center the existing T3 vector mark at 54dp wide on the 108dp canvas, with transparent padding that keeps every visible pixel inside Android's guaranteed 66dp safe circle. Give dev and preview separate full-bleed backgrounds rendered from their existing Icon Composer background SVGs. Launcher shortcuts use the same layers.

Why

The icons were being cutoff.

UI Changes

No more cutoff. 🎉

Still compatible with dynamic color palettes as well.

Note

Fix Android adaptive icons to stay within safe area using local mark and variant backgrounds

• Updates DEVELOPMENT_ASSETS and PREVIEW_ASSETS in app.config.ts to use the local android-icon-mark.png foreground and adds variant-specific background images (android-icon-background-dev.png, android-icon-background-preview.png)
• Configures expo-quick-actions Android shortcut icons to include the variant background image and a monochrome icon alongside the existing foreground and background color
• Release builds explicitly omit a background image and continue using the black background color

^{Macroscope summarized 531aec8.}

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR changes the mobile app’s default Android launcher and shortcut artwork through Expo native build configuration and new image assets. The change is narrowly scoped, but product-default changes require human review.

Not approved because:

• Monthly spending limit reached (workspace setting). Approvability relies on correctness review in order to determine eligibility

^{Review your spending limits in Billing settings. You can add or adjust custom eligibility rules. Learn more.}

[juliusmarminge]

Superseded by #10598 (merged) — same Android adaptive-icon safe-area / variant background fix landed on main via the export-android-icons path.