Reusable JSONL conversion script — a separate original component of the same Archivo Claro experiment. The image shows actual synthetic input, explicit field-mapping/trim rules and output generated by the local Node.js converter. The report verifies two input and two output records, three trimmed fields and the omitted note field. Includes reusable source code, rules and a machine-readable report. AI-assisted implementation with assertions. Self-initiated demonstration, not client work.