Perl PAGI Middleware Demo Shows ASGI-Style Stack in Action

A developer ported a three-layer middleware stack from Plack/PSGI and Starlette/ASGI to PAGI, an async Perl interface modeled after ASGI. The demo includes a logger, authenticator, and profile router, all running on perl-5.40.0 with PAGI::Test::Client. PAGI middleware uses a wrap method that returns a new async app, with optional subclassing for convenience helpers.