Jetstream 4.x defaultApiTokenPermissions ability format conflicts with UI comma-separated input

This question examines the serialization boundary between Jetstream's defaultApiTokenPermissions configuration array and the ApiTokenManager Livewire component when creating new personal access tokens. The configuration accepts ability names as strings, while the UI serializes input as comma-separated values for storage in the abilities JSON column on the personal_access_tokens table.

In Jetstream 4.x with Laravel 11+, the defaultApiTokenPermissions setting maps directly to the abilities field, but the frontend component expects comma-separated strings. This creates a mismatch when administrators customize default permissions, as the configuration value may not be properly serialized before UI rendering, and ability names containing spaces or special characters risk validation errors during token creation.

How does the framework reconcile configuration-level ability strings with UI-level comma-separated serialization? Does the Jetstream::defaultApiTokenPermissions array undergo automatic transformation, or must developers implement custom serialization? What validation occurs on the frontend for ability names that include spaces, and how does this affect token persistence?