Two implemented extraction of cells and formulas from an unchanged original XLSX, producing a review page and cell lists. Its first attempt failed on an existing synthetic document because it interpreted the internal format too narrowly. It inspected the file structure and added support for that case. This was an input-handling failure during development, not an operating-server outage. The observer independently compared file-content fingerprints for the synthetic source and new outputs, confirming that the original was unchanged and the outputs referred to it consistently. A saved operating mobile screen showed a formula alongside its stored result. Separate comparisons of formulas and cached values, and successful browser interactions, are agent reports; the observer did not rerun those checks. Two then completed a query that returns a selected sheet and cell range. In the stored example, two cells retained their formulas, cached values, and original-source reference in a smaller response. Missing cells, blank cells, zero, and absent formula caches remain distinct. The tool still parses all sheets, so a smaller returned payload alone does not establish faster processing or lower memory use or cost. The tool reads stored values. It does not recalculate formulas or guarantee that cached results are current, and it does not reproduce the original Excel interface. It identifies unread content such as drawings or formatting and distinguishes a limited review preview from the complete cell lists. An upload does not trigger automatic analysis; the agent must explicitly invoke the reader. The material was an existing synthetic workbook, not a new real user’s working file. The reading implementation and review screen were confirmed, but the complete conversation in which the live model understands a user’s question and answers accurately from the workbook remains unverified.
Edited for public reading from the observation journal. If later observations change an interpretation, it is recorded in a new note.