feat: add Material You monochrome launcher icon

[0xbrayo]

The home-screen icon had no monochrome layer, so Android 13+ launchers with Material You themed icons enabled could not tint it to the wallpaper palette. Lint already flagged this as MonochromeLauncherIcon.

This adds a single-color vector of the ActivityWatch clock mark (ring, Varela Round A/W, hands, hub) and wires it into both adaptive icons:

• mobile/src/main/res/drawable/aw_launcher_monochrome.xml
• <monochrome> on aw_launcher and aw_launcher_round

The existing full-color clock icon is unchanged on older Android versions and on launchers that do not theme icons.

To verify: install on Android 13+, enable Themed icons under Wallpaper & style, and confirm the ActivityWatch icon picks up the system accent colors.

[greptile-apps]

Greptile Summary

Adds a monochrome ActivityWatch clock vector so Android 13+ launchers can apply Material You themed-icon colors.

• Wires the monochrome drawable into both regular and round adaptive launcher icons.
• Removes the corresponding resolved warnings from the lint baseline.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete functional or compatibility defects identified.

The new resource is referenced consistently by both manifest-selected adaptive icons, supported by the project’s Android resource tooling, and safely ignored by pre-Android 13 framework parsers.

Important Files Changed

Filename	Overview
mobile/src/main/res/drawable/aw_launcher_monochrome.xml	Adds a single-color 108×108 clock-mark vector whose geometry stays within the adaptive-icon safe zone.
mobile/src/main/res/mipmap-anydpi-v26/aw_launcher.xml	Adds the monochrome layer to the standard adaptive launcher icon without changing its existing foreground or background.
mobile/src/main/res/mipmap-anydpi-v26/aw_launcher_round.xml	Adds the same monochrome layer to the round adaptive launcher icon.
mobile/lint-baseline.xml	Removes the two MonochromeLauncherIcon suppressions resolved by the new resource references.

_{Reviews (1): Last reviewed commit: "feat: add Material You monochrome launch..." | Re-trigger Greptile}