Update the MAGDA application icon (dock / taskbar / window icon) from a new source PNG. Use when the user wants to change, swap, or update the app icon, e.g. "update the app icon to Bold-M6". Covers the assets/app_icon.png pipeline, the square-PNG requirement, and rebuilding so JUCE regenerates the .icns/.ico.
$npx -y skills add conceptual-machines/magda-core --skill app-iconInstalls into the current project.
Run `npx skills use "https://github.com/conceptual-machines/magda-core" --skill "conceptual-machines/magda-core/app-icon"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/conceptual-machines/magda-core" that are relevant to the current task. Run `npx skills add "https://github.com/conceptual-machines/magda-core"` and select the relevant skills, then follow their instructions.