Define app shell structure, navigation model, and reusable surface patterns for web/mobile apps
$npx -y skills add dvnghiem/flowdeck --skill app-shell-designInstalls into the current project.
Run `npx skills use "https://github.com/dvnghiem/flowdeck" --skill "dvnghiem/flowdeck/app-shell-design"` 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/dvnghiem/flowdeck" that are relevant to the current task. Run `npx skills add "https://github.com/dvnghiem/flowdeck"` and select the relevant skills, then follow their instructions.