7d7bd93345
Adds a TransientModel wizard fusion.xlsx.export.wizard that lets users pick a report type, date range, and comparison mode, then runs the engine and produces an XLSX via xlsxwriter (in-memory). The wizard exposes a download field that becomes available after export finishes. Works on P&L, Balance Sheet, Trial Balance, and General Ledger. Comparison columns are written when the engine returns a comparison_period in the result. Also wires the controller's /fusion/reports/export_xlsx endpoint to drive the wizard and return base64-encoded XLSX bytes (replaces the not_implemented placeholder). Tests: 2 new (test_xlsx_export.py) + 1 controller test updated. Manifest declares xlsxwriter as an external_dependency. Made-with: Cursor