ExcelMaster v0.6.31

This release improves reliability for tasks that involve multiple selected sheets.

• Additional sheets selected by the user are now referenced from the workbook structure JSON instead of being expanded a second time in the prompt.
• Cross-sheet tasks now use a shorter, less redundant Agent prompt, which reduces unnecessary sheet re-scans and lowers the chance of model confusion.
• GLM 5.1 guidance now points directly at the sheet and extra_sheets fields as the source of truth.

For users, the main impact is steadier behavior on cross-sheet workbook tasks, especially when multiple sheets are selected before asking ExcelMaster to transform or analyze data.