The suites drive these dependencies through Testcontainers and in-process fixtures, so nothing here is required to run ./gradlew :adapter:outbound:httpclient:test. These files exist for the nightly lane and for reproducing a failure locally with the same images and ports CI uses.

Directory	Purpose	Used by
`toxiproxy/`	TCP fault injection (latency, reset, bandwidth)	`httpClientFailureInjectionTest`
`tls/`	how the TLS and mTLS material is produced	TLS and mTLS suites
`proxy/`	forward proxy with CONNECT and proxy authentication	proxy contract suite
`oauth2/`	token endpoint behaviour under contention	OAuth2 suites