Keep the env-presence row, but add a real Bitwarden probe so revoked or malformed tokens no longer look healthy in hermes secrets bitwarden status.
Also document the new status behavior and lock it in with a dedicated regression test.
Refs: NousResearch/hermes-agent#40275
Tested: ./scripts/run_tests.sh tests/hermes_cli/test_bitwarden_status.py tests/test_bitwarden_secrets.py
Tested: .venv/bin/python -m ruff check hermes_cli/secrets_cli.py tests/hermes_cli/test_bitwarden_status.py
