Rebasing onto main turned 21 tests red in four files whenever the operator supplies
HERMES_GATEWAY_LOCK_DIR. Not a behaviour collision: the record this PR introduces lives in
the per-OS-USER host state dir, and the root conftest pins that dir per test only when the
caller supplied nothing (#118097 deliberately keeps the documented override working). With
one supplied, every test in a file shares the dir, so a case that arms the obligation makes
the next case read a restart it never owed.
Clearing the record around each hermes_cli test — rather than re-pinning the dir — fixes the
leak without touching #118097's resolution rule or any expectation.
3be255eca6