excel-formula-troubleshooter

Debug, fix, and optimize broken Excel and Google Sheets formulas. Identifies the exact root cause (mismatched parentheses, wrong syntax, text-vs-number mismatch, circular reference, incorrect range, wrong column index), returns a copy-paste-ready corrected formula with UPPERCASE function names, a beginner-friendly bulleted explanation, and an optional modern alternative (XLOOKUP over VLOOKUP, IFERROR to mask error values). Scope-locked to spreadsheet-formula troubleshooting. Includes a /fix-formula slash command that intakes the broken formula and the issue (pipe-separated, tag-wrapped, or interactive prompt).