This handles the creation and configuration of Salesforce Lightning applications, which are basically containers that organize tabs and features for specific business processes. The skill knows when to use Standard navigation versus Console mode, which matters more than you'd think. Standard is the default for most business apps, while Console is only for workflows that need split views and multi-tab workspaces like call centers. It also handles branding configurations and action overrides, the latter being critical when you've got custom record pages that need to actually show up. The documentation is thorough on navigation types and form factors, so you're not guessing whether your app setup will work for mobile users.
npx skills add https://github.com/forcedotcom/afv-library --skill generating-custom-application