sed -i coverage for ~/.hermes/config.yaml and .env was added in #14639,
but perl -i and ruby -i — which perform the same direct file mutation —
were not covered. The existing perl/ruby pattern only catches -e/-c (code
evaluation), not -i (file mutation), so:
perl -i -pe 's/approvals.mode: on/approvals.mode: off/' ~/.hermes/config.yaml
bypasses the approval gate entirely, letting the agent flip approvals.mode
off mid-session via the mtime-keyed config cache reload.
Add a single pattern mirroring the sed -i lines: `\b(?:perl|ruby)\s+-[^\s]*i`
against both _HERMES_CONFIG_PATH and _HERMES_ENV_PATH. Three regression
tests pin the new coverage.
a6a4e6f9d7