excel-parser

Diagnose why ks-xlsx-parser's retrieval recall is below target by reading the failure-bucket histogram and exemplar failures, then propose ranked fixes. Use when investigating low recall@k on SpreadsheetBench, deciding what to fix next, or reviewing a benchmark run. Sister skill to excel-extraction-pipeline-improver.

Iteratively improves the xlsx_parser extraction pipeline using feedback, test failures, and golden outputs. Use when fixing extraction gaps, addressing parser feedback, or improving coverage on stress workbooks. Follows TDD with instrumentation.

Creates Excel workbooks that exercise every content type in the Workbook Graph extraction spec. Use when building stress-test workbooks, measuring parser completeness, or regression-testing the xlsx_parser. Covers cells, formulas, tables, charts, shapes, conditional formatting, data validation, and edge cases.