Business Central's "Open in Excel" exports write booleans as
<c><f>TRUE()</f><v>1</v></c> with no t="b", so the cached value reads back
as the number 1 and the calc oracle reported every such cell as a
`number → bool` mismatch. A cached 1 or 0 now matches GridCraft's TRUE or
FALSE, and the cells are counted apart (`boolAsNumber` in --json, a note in
the text report) so a real number/logical disagreement stays visible.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Clean-room import of Excel 97-2003 workbooks from the public [MS-CFB] and
[MS-XLS] specifications: compound-file streams (FAT, mini FAT, directory
tree), the BIFF8 Workbook stream with Continue records, shared strings,
all cell records, formulas decoded from Ptg tokens (shared and array
formulas, 3-D refs, names, add-in/newer functions by name) with cached
results, number formats, the 1904 date system, merges, column widths, row
heights, defined names and print areas/titles. Encrypted (FILEPASS) and
BIFF5 files are refused with a clear message; everything else is skipped
with a warning. .xls opens as a new unsaved workbook (Save As .xlsx).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Resolves the shared integration points for both formats: combined sniff,
file.open spec, file filters, MCP description, docs. open_bytes now lets
sniffed content (ODS or XLSB) win over the extension.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Brandon Thomas