Grouping Export to match UI

The Problem: Exports currently ignore UI settings, providing a raw data dump that strips away the groupings, filters, and totals visible on-screen.

The Request: Update the export engine to mirror the active interface view exactly (What You See Is What You Get):

• Preserve Grouping: Maintain hierarchy (e.g., Project-based breakdown).

• Respect Filters: Export only the data currently visible.

• Include Totals: Carry over all subtotals and grand totals.

Value: Eliminates manual re-formatting in Excel and ensures consistency between the dashboard and shared reports.