23b988c401
Adds an AbstractModel report (report_pdf.py) and a single multi-purpose QWeb template (report_pdf_template.xml) that renders P&L, Balance Sheet, Trial Balance, and General Ledger results from the engine. Wires the controller's /fusion/reports/export_pdf endpoint to actually return base64-encoded PDF bytes via _render_qweb_pdf. The template walks the result['rows'] list and applies indentation/bold based on level and is_subtotal flags, with optional comparison columns when present. Tests: 2 new (test_pdf_export.py) + 1 controller test updated to assert the real PDF response. Net 109 -> 111. Made-with: Cursor