Two follow-ups from Opus pre-release review of stage-336:
1. tests/conftest.py — autouse session fixture that removes
HERMES_WEBUI_SKIP_ONBOARDING from os.environ for the whole pytest run, and
restores it after. Hosting providers and isolated harnesses set this var
to short-circuit the onboarding wizard, but it leaked into pytest and
caused tests that exercise apply_onboarding_setup() to fail with cryptic
FileNotFoundError. Tests that specifically validate the short-circuit
behavior can opt back in with monkeypatch.setenv. Surgical per-test
delenv calls remain as defense-in-depth but are now redundant.
2. docs/rfcs/README.md — one-line note that first-time contributor RFCs
should be discussed in an issue before opening a PR. Gates drive-by
design-doc PRs without us having to decline them on contribution.
Verified: 96 onboarding-related tests pass with HERMES_WEBUI_SKIP_ONBOARDING=1
exported in the test runner env (would have failed before this fixture).