Restructure: move packages from packages/ subdirectory to root

Flattened directory structure by moving payment packages from redundant
packages/ subdirectory to the root level of oca-payment repository.

Changes:
- Moved odoo-bringout-oca-payment-* from packages/ to root
- Updated CLAUDE.md to reflect new flat structure
- Removed redundant packages/ directory

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

odoo-bringout-oca-payment-payment_mode/account_payment_mode/models/account_journal.py

@@ -0,0 +1,74 @@
+# Copyright 2016-2020 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+from odoo import _, api, models
+from odoo.exceptions import ValidationError
+
+
+class AccountJournal(models.Model):
+    _inherit = "account.journal"
+
+    def _default_outbound_payment_methods(self):
+        all_out = self.env["account.payment.method"].search(
+            [("payment_type", "=", "outbound")]
+        )
+        return all_out
+
+    def _default_inbound_payment_methods(self):
+        method_info = self.env[
+            "account.payment.method"
+        ]._get_payment_method_information()
+        allowed_modes = ["unique"]
+        if "payment_provider_id" in self.env["account.payment.method.line"]._fields:
+            allowed_modes.append("electronic")
+        unique_codes = tuple(
+            code
+            for code, info in method_info.items()
+            if info.get("mode") in allowed_modes
+        )
+        all_in = self.env["account.payment.method"].search(
+            [
+                ("payment_type", "=", "inbound"),
+                ("code", "not in", unique_codes),  # filter out unique codes
+            ]
+        )
+        return all_in
+
+    @api.constrains("company_id")
+    def company_id_account_payment_mode_constrains(self):
+        for journal in self:
+            mode = self.env["account.payment.mode"].search(
+                [
+                    ("fixed_journal_id", "=", journal.id),
+                    ("company_id", "!=", journal.company_id.id),
+                ],
+                limit=1,
+            )
+            if mode:
+                raise ValidationError(
+                    _(
+                        "The company of the journal %(journal)s does not match "
+                        "with the company of the payment mode %(paymode)s where it is "
+                        "being used as Fixed Bank Journal.",
+                        journal=journal.name,
+                        paymode=mode.name,
+                    )
+                )
+            mode = self.env["account.payment.mode"].search(
+                [
+                    ("variable_journal_ids", "in", [journal.id]),
+                    ("company_id", "!=", journal.company_id.id),
+                ],
+                limit=1,
+            )
+            if mode:
+                raise ValidationError(
+                    _(
+                        "The company of the journal  %(journal)s does not match "
+                        "with the company of the payment mode  %(paymode)s where it is "
+                        "being used in the Allowed Bank Journals.",
+                        journal=journal.name,
+                        paymode=mode.name,
+                    )
+                )