Diagnose and clean messy CSV/XLSX files with a three-phase medical-triage discipline: EXAMINE profiles the file read-only and presents a diagnosis report, PRESCRIBE proposes an explicit numbered cleaning plan that requires your approval before anything changes, TREAT executes via a generated Python script that always writes to a new file (never the original) and accounts for every cell it changed, with an optional SUMMARIZE phase for pivots and aggregates once the data is trustworthy. Invoke with /spreadsheet-doctor [args].
