refactor(i18n): make Dominican Spanish standalone

Remove the es_419 parent from the es_DO language record and provide the complete core ir catalog so the Dominican locale is independently maintained in core and every module.

docs/custom-repository-operations.md

@@ -36,12 +36,12 @@ organization grants that token read-only cross-repository access to
 
 ## Translation workflow
 
-The Tryton server owns the `es_DO` language and declares `es_419` as its
-fallback. Dominican translations live beside each package in its regular
-`locale/es_DO.po` catalog. The catalogs are initially bootstrapped from
-`es_419` so Weblate exposes the complete vocabulary for review; subsequent
-Dominican terminology is maintained directly in those catalogs. There is no
-duplicated localization module or runtime dependency on one.
+The Tryton server owns `es_DO` as a standalone language; its database record
+does not declare `es_419` (or any other locale) as parent. Complete Dominican
+translations live beside each package in its regular `locale/es_DO.po`
+catalog. The initial catalogs were bootstrapped from `es_419`, but they are now
+independent and Dominican terminology is maintained directly in them. There is
+no duplicated localization module or runtime dependency on one.
 
 Weblate must push through a dedicated `translation/weblate-8.0` branch and a
 reviewed pull request to `integration/8.0`; it must never push directly to a
@@ -56,9 +56,9 @@ When a catalog changes, update the database with:
 trytond-admin -d DATABASE --all --activate-dependencies
 ```
 
-Activate Spanish, Spanish (Latin American), and Spanish (Dominican Republic)
-as translatable languages in that order. Then update the activated modules to
-import any new `es_DO.po` catalogs delivered by Weblate.
+Activate Spanish (Dominican Republic) as a translatable language, then update
+the activated modules to import any new `es_DO.po` catalogs delivered by
+Weblate. Activating Spanish (Latin American) is not required for `es_DO`.
 
 ## Resolving an upstream conflict
 

trytond/trytond/ir/lang.xml

@@ -154,7 +154,6 @@ this repository contains the full copyright notices and license terms. -->
         <record model="ir.lang" id="lang_es_DO">
             <field name="code">es_DO</field>
             <field name="name">Spanish (Dominican Republic)</field>
-            <field name="parent">es_419</field>
             <field name="nplurals" eval="2"/>
             <field name="plural">n != 1</field>
             <field name="date">%d/%m/%Y</field>

trytond/trytond/tests/test_ir.py

@@ -18,7 +18,7 @@ except ImportError:
 from dateutil.relativedelta import relativedelta
 
 from trytond.ir.exceptions import SequenceAffixError
-from trytond.ir.lang import _replace, get_parent_language
+from trytond.ir.lang import _replace
 from trytond.pool import Pool
 from trytond.pyson import Eval, If, PYSONEncoder
 from trytond.tools import timezone
@@ -359,15 +359,14 @@ class IrTestCase(ModuleTestCase):
 
     @with_transaction()
     def test_dominican_spanish_language(self):
-        "Dominican Spanish is provided by the server with Latin fallback"
+        "Dominican Spanish is provided by the server as a standalone language"
         pool = Pool()
         Lang = pool.get('ir.lang')
 
         language = Lang.get('es_DO')
 
         self.assertEqual(language.code, 'es_DO')
-        self.assertEqual(language.parent, 'es_419')
-        self.assertEqual(get_parent_language(language.code), 'es_419')
+        self.assertIsNone(language.parent)
 
     @with_transaction()
     def test_lang_currency(self):