fix(android): use the Omnigent creature mark for the notification icon

[btli]

Related issue

Fixes #4622

Summary

Android status-bar small icons are system-tinted monochrome alpha masks: color and fine interior detail are discarded. The previously shipped icon was a generic isometric cube, while reusing the full launcher creature mark was also rejected because its pupils and nested sub-creature disappear entirely at 24dp.

This ships a purpose-built five-lobed creature silhouette with bold eye cutouts that survive at status-bar size. The drawable is now one 586-character path instead of the reused 4,332-character path, which also clears Android lint's VectorPath “very long vector path” warning.

ELI5: Android treats the small icon like a stencil, so this uses one simple creature-shaped stencil with two large eye holes instead of shrinking detailed artwork until it disappears.

detailed launcher art -> simplify for alpha mask -> silhouette + bold eye holes -> Android tint

Test Plan

• PATH="$PWD/.venv/bin:$PATH" pre-commit run --files web/android/app/src/main/res/drawable/ic_notification.xml — passed all applicable hooks.
• From web/android: JAVA_HOME=/opt/homebrew/opt/openjdk@21 ANDROID_HOME="$HOME/Library/Android/sdk" ./gradlew :app:lintDebug — BUILD SUCCESSFUL in 14 seconds; 29 tasks completed or were up to date.
• Converted the final VectorDrawable to SVG while preserving evenOdd, rasterized it at 96px, 48px, 24px, and 16px, and compared each render against approved candidate B with ImageMagick. magick compare -metric AE returned 0 at every size.
• Inspected alpha-only white-on-dark composites at 24px and 16px; the five-lobed silhouette remains distinct and both eye cutouts remain separate.

Demo

24px system-tinted alpha-mask view (shown enlarged):

96px detail view:

Previous cube vs. purpose-built creature glyph:

Type of change

• Bug fix
• Feature
• UI / frontend change
• Refactor / chore
• Docs
• Test / CI
• Breaking change

Test coverage

• Unit tests added / updated
• Integration tests added / updated
• E2E tests added / updated
• Manual verification completed
• Existing tests cover this change
• Not applicable

Coverage notes

This is a static VectorDrawable asset, so automated unit, integration, and E2E coverage is not applicable. Manual verification covered Android resource linting, exact raster comparison against the approved design at four sizes, alpha-mask behavior, viewport containment, and visual legibility of the silhouette and eye cutouts at 24px and 16px.

Changelog

Android notifications now use a legible Omnigent creature icon in the status bar.

[github-actions]

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