[18.0] [IMP] spreadsheet_oca: headless XLSX export with server-side pivot rendering#101

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dnplkndll wants to merge 2 commits intoOCA:18.0from

ledoent:18.0-feat-xlsx

Commits on Mar 13, 2026

[IMP] spreadsheet_oca: add server-side pivot data engine and cell-ref helpers

dnplkndll
and
claude
committed
[IMP] spreadsheet_oca: add headless XLSX export with server-side pivot rendering

dnplkndll
and
claude
committed