The egress developer guide says `HERMES_RUN_E2E=1 scripts/run_tests.sh tests/agent/test_iron_proxy_e2e.py`, but the runner's `env -i` dropped the variable, so all three cases skipped silently. Forward it next to the other opt-in knobs (HERMES_RUN_SLOW_PET_TESTS, HERMES_E2E_BROWSER); before: 3 skipped, after: 3 passed. The test docstring no longer names a --run-e2e option that never existed.