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Add Table.to_list() for dependency-free row export - #454
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Table currently only exposes to_pandas / to_csv (which require pandas) and to_excel (xlsxwriter) for programmatic access to cell contents. In constrained environments such as AWS Lambda, pulling in pandas just to read a table as a nested list is undesirable. Add Table.to_list(), returning List[List[str]] of cell text ordered left-to-right, top-to-bottom, with empty cells as empty strings. The implementation reuses the same grid-construction logic already present in to_txt (which builds and then discards this structure), so no new dependencies are introduced. Merged-cell placeholder/duplication logic (handled by to_pandas) is intentionally not applied; this is documented in the method docstring. Closes #435
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Table currently only exposes to_pandas / to_csv (which require pandas) and to_excel (xlsxwriter) for programmatic access to cell contents. In constrained environments such as AWS Lambda, pulling in pandas just to read a table as a nested list is undesirable.
Add Table.to_list(), returning List[List[str]] of cell text ordered left-to-right, top-to-bottom, with empty cells as empty strings. The implementation reuses the same grid-construction logic already present in to_txt (which builds and then discards this structure), so no new dependencies are introduced. Merged-cell placeholder/duplication logic (handled by to_pandas) is intentionally not applied; this is documented in the method docstring.
Closes #435