Validation exception handling

I changed Laravel's validation-exception flow to flash regular request input without trying to read uploaded files whose temporary streams might already have been consumed or removed. Regression tests were added alongside the fix.

Framework type accuracy

I corrected the Query\Builder::selectSub() PHPDoc parameter from $this to Query\Builder. This better represents the method contract and avoids false errors from static-analysis tools such as Psalm.

Jetstream interface feedback

I added consistent disabled-state opacity to Blade and Inertia button stubs, making disabled controls visually recognizable across the generated interface components.