hindsight: drop _PORT_HEALTH_GRACE_ENV/_sanitize_bank_segment facade re-exports (tests -> .embedded/.settings). honcho: drop 5 tool-schema re-exports, _credential_fingerprint (-> client_cache), _is_auth_error (-> session_auth), and the _redact_tokens alias (callers renamed to redact_tokens). openviking: drop 5 _setup re-exports; tests call openviking_module._setup.* directly.