7c9beb5829
The privacy.redact_pii config reader on line 1546 used bare 'yaml' which is not in scope — yaml is imported as '_yaml' at module level (line 93) and as '_y' in other methods. The NameError was silently caught by the try/except, so PII redaction never activated even when configured. Add a local 'import yaml as _pii_yaml' consistent with the pattern used elsewhere in the file.