[codex] Fix Livewire and Blade view isolation under coroutines

[adhikjoshi]

Summary

Adds coroutine-safe Livewire rendering support for Swoole and fixes per-coroutine Blade view isolation for Filament/Livewire pages.

The first fix serializes Livewire render/flush sections with a coroutine-aware reentrant mutex. Local app verification showed that was not sufficient by itself: Filament still failed because cloned view factories inherited the base __env share, so compiled Blade component stack state could escape the coroutine-scoped view factory. v0.8.13 updates RequestScope so each cloned view factory shares itself as __env.

Validation

• /opt/homebrew/Cellar/php@8.3/8.3.29/bin/php ./vendor/bin/phpunit --filter 'LivewireCoroutineMutexTest|RequestScopeViewIsolationTest'
• PHP syntax checks on modified fork files
• Consumed from uncensored-chat-fullstack via tag v0.8.13
• Docker verification app /admin/login returns 200 under Swoole after this tag; it failed under v0.8.12
• 1000-request/100-concurrency app leakage test passed
• Docker app probe handled 2000 requests at concurrency 200

Release

Tagged as v0.8.13 at f356514ab2d379126cb4ca892af871b34da52795.