[DOC] Actualizar documentación a estándares OCA y preparar logo CriptoMart

- Renombrar README.md a README_DEV.md en todos los addons custom
- Crear README.rst siguiendo estructura OCA oficial
- Crear directorios readme/ con fragmentos .rst (DESCRIPTION, INSTALL, CONFIGURE, USAGE, CONTRIBUTORS, CREDITS)
- Actualizar créditos: Criptomart (autor) + Elika Bilbo (financiador)
- Actualizar __manifest__.py con maintainers correctos
- Crear estructura static/description/ para logo en 5 addons
- Agregar documentación de logo (LOGO_INSTRUCTIONS.md, install_logo.sh)
- Actualizar copilot-instructions.md con referencias a OCA_DOCUMENTATION.md
- Crear docs/OCA_DOCUMENTATION.md con guía completa de estructura
- Crear docs/RESUMEN_CAMBIOS_DOCUMENTACION.md con resumen detallado

Addons actualizados:
- website_sale_aplicoop
- product_sale_price_from_pricelist
- product_pricelist_total_margin
- product_price_category_supplier
- account_invoice_triple_discount_readonly

account_invoice_triple_discount_readonly/readme/DESCRIPTION.rst

@@ -0,0 +1,31 @@
+This module fixes a bug in ``account_invoice_triple_discount`` when combined with ``purchase_triple_discount``.
+
+**Problem Solved:**
+
+In purchase orders, when configuring discounts in the ``discount2`` or ``discount3`` columns:
+
+* Upon saving, all discounts were accumulated in the ``discount1`` column
+* The ``discount2`` and ``discount3`` fields were reset to zero
+* This occurred because the original mixin's ``write`` method always reset these fields
+
+**Solution:**
+
+The module overrides the ``write`` method of ``triple.discount.mixin`` to:
+
+#. Detect if ``discount1``, ``discount2`` or ``discount3`` are being explicitly modified
+#. If there are explicit discounts, ignore the computed ``discount`` field
+#. If only the ``discount`` field comes, maintain legacy behavior
+#. Make the total ``discount`` field readonly in relevant views
+
+**Additional Features:**
+
+* Makes the ``discount`` field (total discount) **readonly** in:
+
+  * Partner form view (``res.partner``)
+  * Supplier info in product form (``product.supplierinfo``)
+  * Purchase order lines (``purchase.order.line``)
+  * Account move lines (``account.move.line``)
+  * Base mixin (``triple.discount.mixin``)
+
+* Forces users to work only with the ``discount1``, ``discount2`` and ``discount3`` columns
+* Avoids confusion between computed total and individual discounts