Add configurable `capacity_wait_timeout` to runner configs and use it in
`ProvisionGithubRunnerJob` to re-dispatch jobs while at capacity, preserving
initial wait start time and stopping after timeout.
Improve runner provisioning by caching an extracted runner template and copying
it into new runner directories.
Update Livewire GitHub Runners UI to lazy-load accessible repositories via
`wire:init`, track loading state, add timeout input, and remove preinstall
binary action.
Add/extend feature tests for capacity retry timeout behavior and deferred
repository loading.
