crea mandatos SEPA desde pedidos del TPV

pos_account_payment_order_sepa/README.md

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+# POS Account Payment Order SEPA
+
+Adds a contextual action **"Collect by SEPA direct debit"** on the POS orders
+list/form (Point of Sale → Orders).
+
+## Purpose
+
+When a POS order is paid with a *"Customer Account"* payment method
+(`split_transactions = True`), Odoo does not register a real collection: it
+leaves the amount as an **open receivable** for the customer inside the
+session's journal entry. This module lets you collect those receivables in
+bulk through a **SEPA direct debit payment order** (debit order), without
+re-invoicing the already-issued (simplified) tickets.
+
+## Usage
+
+1. Make sure the affected customers have a **valid SEPA mandate** (see
+   `account_banking_mandate_batch`).
+2. Go to **Point of Sale → Orders**, filter the orders paid on account, select
+   them and run **Action → Collect by SEPA direct debit**.
+3. The action creates the **payment lines** inside a draft inbound SEPA
+   payment order, grouped by payment mode. Orders without an open receivable,
+   without a partner, already queued, or whose partner has no valid mandate are
+   **skipped and reported**.
+4. Open **Invoicing → Customers → Payment Orders**, confirm it and **generate
+   the SEPA file (pain.008)**.
+
+## Payment mode resolution
+
+The inbound SEPA payment mode is taken from the partner's
+`customer_payment_mode_id` when it is a valid `sepa_direct_debit` inbound mode;
+otherwise the first inbound `sepa_direct_debit` payment mode is used as
+fallback.