Excel cell metadata and formatting in Parse

Advanced Excel parsing can now preserve source-cell provenance and formatting in parse output.

Set advancedOptions.excelIncludeCellMetadata to return source cell references such as B2 or merged ranges such as A1:C1; formula cells also include the source formula text.
Set advancedOptions.excelIncludeCellFormatting to return structured cell formatting such as bold, italic, font color, and background color.
For HTML table output, metadata is also emitted as data-cell and data-formula attributes, and formatting preserves inline cell styles.

Both options are off by default and require advancedOptions.excelParsingMode: "advanced". See the Parse configuration guide for setup details.