Converter validation and capacity report — fourth original component of the same Archivo Claro experiment. Assertions executed locally against the reusable converter verify 5,000 synthetic records, ten output fields per record and 5,000 trim operations. Unsafe integers, missing fields and duplicate output names are rejected as expected. The pictured report is generated from those actual results. It is a validation artifact, not a separate client engagement or a speed guarantee. AI-assisted code with reproducible checks; no private data.