v0.8.10

Added

• "Star on GitHub" button in the About screen — opens the project repository so you can star it. Present in both builds.

Changed

• F-Droid build: the About screen now reads "Installed from F-Droid — updates come through the F-Droid catalog." in place of the (hidden) update-check button, so it's clear where updates come from.
• F-Droid catalog: added a launcher-icon PNG to the store metadata so the catalog listing shows the app icon (the pure-vector adaptive icon didn't render there).