[REF] all: pass pre-commit on the whole repo

Needed for the lint job of the CI to go green. Mostly automatic hook
fixes (black, isort, prettier, pyupgrade, autoflake, whitespace). By hand:

- flake8: two unused imports, an ambiguous variable name `l`.
- pylint-odoo mandatory: manifest keys equal to their default value
  (installable, application, data, external_dependencies).
- end-of-file-fixer skips *.patch too, like trailing-whitespace: the
  upstream patches stay as git format-patch wrote them.

No behaviour change.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

membership_payment_date/__manifest__.py

@@ -13,7 +13,4 @@
         "membership_variable_period",
         "account",
     ],
-    "data": [],
-    "installable": True,
-    "application": False,
 }

membership_payment_date/models/account_move.py

@@ -4,7 +4,8 @@
 import math
 from datetime import timedelta
 
-from odoo import fields, models
+from odoo import fields
+from odoo import models
 
 
 class AccountMove(models.Model):
@@ -74,7 +75,11 @@ class AccountMove(models.Model):
         return fields.Date.today()
 
     def _compute_membership_dates(
-        self, partner, product, payment_date, quantity=1.0,
+        self,
+        partner,
+        product,
+        payment_date,
+        quantity=1.0,
         exclude_line_ids=None,
     ):
         """Calculate date_from and date_to for a membership line.

membership_payment_date/tests/test_membership_payment_date.py

@@ -4,11 +4,10 @@
 from datetime import date
 
 from freezegun import freeze_time
-
 from psycopg2 import ProgrammingError
 
-from odoo import fields
-from odoo.tests import Form, common
+from odoo.tests import Form
+from odoo.tests import common
 
 
 @freeze_time("2026-01-15")
@@ -123,9 +122,7 @@ class TestMembershipPaymentDate(common.TransactionCase):
     def _create_invoice(self, product, invoice_date, quantity=1.0):
         """Create and return a draft out_invoice with the given product."""
         invoice_form = Form(
-            self.env["account.move"].with_context(
-                default_move_type="out_invoice"
-            )
+            self.env["account.move"].with_context(default_move_type="out_invoice")
         )
         invoice_form.invoice_date = invoice_date
         invoice_form.partner_id = self.partner