Security audit for Laravel PHP applications including Eloquent mass assignment ($fillable/$guarded), middleware (auth, throttle, csrf), Blade template safety, validation rules, Sanctum/Passport auth, .env handling, query builder safety, and Laravel-specific patterns. Use this skill whenever the user mentions Laravel, php artisan, Eloquent, Blade, Sanctum, Passport, Tinker, Forge, Vapor, or asks "audit my Laravel app", "Laravel security review". Trigger when the codebase contains `composer.json` with `laravel/framework`, `artisan` file, or `app/Http/` directory.