* feat(e2e): record each e2e test's steps, starting with ProxyClient
@step on a harness method records a plain-English line for every call, in
order, as repeated JUnit step properties. Labels are templates filled from the
call's parameters, like "Generate a virtual key with models: claude-haiku-4-5
and rpm limit: 3", and secret request fields are marked Field(repr=False) so
they never print. ProxyClient and the rate-limit QuotaClient carry steps first;
the other harnesses follow one area at a time. The recorder and JUnit tests run
in the Code Quality workflow's test_e2e_metadata step.
* docs(e2e): rewrite the recorded test steps guide in plain language
* fix(e2e): keep logging callback credentials out of recorded steps
* fix(e2e): mask the run's credentials in every recorded step
* fix(e2e): attach steps before the oauth failure snapshot
The failed setup or call report of an mcp_oauth_live test copied user_properties before the steps were attached, so it carried no steps. Every setup and call report now takes its properties after the steps attach
* fix(e2e): name the saved credential in its recorded step
The create_credential label read credential_info, which defaults to {} and is never set by the live callers, so the step printed nothing after 'for'. It now reads the required credential_name, and a guard fails on any label that reads a field with a default
