feat: add tax settlement summary to PDF export

[tonomolla6]

Summary

• The PDF export currently only includes the accounting entry data but not the tax settlement summary (accrued VAT, deductible VAT, general regime result) that is displayed in the web interface via the Modelo303.html.twig template.
• Since HtmlView does not export its content to PDF, the summary (boxes 27, 45 and 46) was completely missing from the exported document.
• Override exportAction() to manually load modelo303 data and append a summary table with the settlement totals after the standard view export.

Changes

Modified: Controller/EditRegularizacionImpuesto.php

The overridden exportAction():

1. Replicates the parent EditController::exportAction() logic
2. Loads view data before exporting (needed because exportAction runs in execPreviousAction, before loadData is called)
3. After exporting all views, adds a table with:
   • Box 27 — Total accrued fee (total cuota devengada)
   • Box 45 — Total to deduct (total a deducir)
   • Box 46 — General regime result (resultado régimen general)

Test plan

• Open an existing tax regularization (Modelo 303) with data
• Click the print/export PDF button
• Verify the PDF now includes a summary table with boxes 27, 45 and 46
• Verify the amounts match those shown in the web interface

🤖 Generated with Claude Code

[tonomolla6]

Hola! Os dejo este PR por si os interesa incluirlo en futuras versiones.

Nos lo ha pedido algún cliente: que al exportar el PDF del Modelo 303 aparezcan los totales de IVA repercutido, IVA soportado y el resultado (la diferencia, lo que hay que pagar/devolver a Hacienda). Actualmente en el PDF solo sale el asiento contable, pero no el resumen de liquidación que sí se ve en la web.

Es algo más bien estético para el documento PDF, pero las asesorías lo agradecen porque les queda más claro lo que hay que presentar.

Si os encaja, genial. Si no, no pasa nada, lo mantenemos por nuestra parte. 👍

[Copilot]

Pull request overview

This PR adds tax settlement summary information to PDF exports of tax regularization documents (Modelo 303). Previously, the PDF export only included accounting entry data but not the summary totals (boxes 27, 45, and 46) that are displayed in the web interface via the HtmlView template.

Changes:

• Overrides exportAction() to manually load modelo303 data and append a summary table with settlement totals (total accrued fee, total to deduct, and general regime result) after the standard view export
• Sets PDF orientation to landscape before exporting
• Loads data for all views before exporting (necessary because exportAction runs in execPreviousAction, before standard loadData)

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[daniel89fg]

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