Static File Serving Benchmark (HTTP/3): Validation Checks

validate.sh requests /static/reset.css four times over QUIC and requires all four to come back 2xx:

PASS [static-h3 over QUIC] (4/4 2xx, ALPN h3)

There is no HTTP/3 client in the validator's base image and OpenSSL cannot speak QUIC, so the check runs the same ngtcp2-built h2load the benchmark uses, with --alpn-list=h3. If that image has not been built the check reports SKIP and is counted as skipped. It never passes silently.

This profile previously had no checks of its own and leaned on the HTTP/2 static validation, which only covers an entry that also subscribes to an h2 profile. An entry subscribing to H3 alone ran no assertions at all and still exited 0. Content-Type, response sizes and 404 handling are still asserted over h2 by HTTP/2 Static Files validation for entries that serve both on port 8443.