Fix Android adaptive launcher icon

[colonelpanic8]

What Changed

• replace composed universal Android app icons with a transparent, adaptive-only T3 foreground
• use a smaller, flat white mark with corrected optical centering and safe-zone spacing
• preserve each Android variant's background color and the monochrome themed icon
• keep an SVG source of truth and document deterministic PNG regeneration

Why

The previous foreground already contained a rounded-square icon silhouette. Android then masked that composed image again, producing a cramped, double-framed launcher icon.

UI Changes

Android 15 / API 35 Google APIs x86_64 image in Pixel Launcher. Left: previous development icon. Right: revised flat adaptive foreground.

The production x86_64 release APK was also installed and launched on the emulator; it reached the normal No environments connected screen without an Android runtime crash.

Checklist

• vp check (0 errors; 14 pre-existing warnings outside this diff)
• vp run lint:mobile (passes; optional SwiftLint/ktlint/detekt unavailable on this Linux host)
• focused formatting/lint checks for apps/mobile/app.config.ts and the new assets
• byte-for-byte SVG-to-PNG regeneration with librsvg
• Expo config inspected for development, preview, and production variants
• production release APK built, installed, and launched on an API 35 emulator
• vp run typecheck is blocked outside this diff: marketing prompts for @astrojs/check, while unchanged oxlint/mobile tests fail against the installed @effect/vitest exports

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Note

Low Risk
Branding and Expo asset path changes only; no auth, data, or application logic.

Overview
Fixes the double-framed Android launcher icon by pointing development, preview, and production at one shared adaptive foreground (./assets/android-icon-foreground.png) instead of variant-specific universal exports that already included a rounded-square silhouette.

Adds android-icon-foreground.svg as the source of truth (flat white T3 mark on a transparent canvas, sized for the adaptive safe zone) and documents regenerating the paired PNG with rsvg-convert in assets/README.md. Per-variant adaptive background colors and android-icon-mark.png for monochrome themed icons are unchanged.

^{Reviewed by Cursor Bugbot for commit b5839de. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Fix Android adaptive launcher icon across all build variants

Replaces per-variant adaptive foreground icon paths with a single shared asset at ./assets/android-icon-foreground.png. Adds the new PNG and SVG source files, and documents how to re-export the PNG using rsvg-convert at 432×432. The existing android-icon-mark.png is kept for monochrome themed icons.

^{Macroscope summarized b5839de.}

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[macroscopeapp]

Approvability

Verdict: Approved

Consolidates Android adaptive launcher icon foreground to a single asset across all build variants. The change is purely cosmetic (app icon appearance) with no runtime logic impact, plus documentation updates.

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Dismissing prior approval to re-evaluate 0b746f1