Existing component map

Reuse these first:

Structure: BaseModal.vue, BackButton.vue, EmptyState.vue, SkeletonCard.vue.
Controls: ToggleSwitch.vue, PasswordRevealInput.vue, AppSearchField.vue, CopyButton.vue.
Feedback: ToastStack.vue, ContainerStatus.vue, existing upload/progress components.
Completion: PaymentSuccessPane.vue, IdentitySuccessPane.vue.
App flows: AppLauncherOverlay.vue, AppCredentialInterstitial.vue.

The terminal must have an explicit keyboard ownership boundary and must not be wrapped in the generic arrow-key modal behavior without adapting it.