refactor: align addressbook module to MintyPHP\Module\AddressBook namespace

Migrates addressbook service classes from core namespace
(MintyPHP\Service\AddressBook\*) to proper module namespace
(MintyPHP\Module\AddressBook\Service\*), consistent with the
bookmarks module pattern.

Moved to module:
- AddressBookService → modules/addressbook/lib/Module/AddressBook/Service/
- AddressBookServicesFactory → modules/addressbook/lib/Module/AddressBook/Service/
- AddressBookServiceTest → modules/addressbook/tests/Module/AddressBook/Service/
- Pages, templates, CSS, JS all in module directory

All module PHP classes now live under MintyPHP\Module\<Name>\*,
enforced by ModuleStructureContractTest::testModuleClassesUseModuleNamespace.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/addressbook/lib/Module/AddressBook/AddressBookContainerRegistrar.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace MintyPHP\Module\AddressBook;
+
+use MintyPHP\App\AppContainer;
+use MintyPHP\App\Container\ContainerRegistrar;
+use MintyPHP\Module\AddressBook\Service\AddressBookService;
+use MintyPHP\Module\AddressBook\Service\AddressBookServicesFactory;
+use MintyPHP\Service\CustomField\CustomFieldServicesFactory;
+use MintyPHP\Service\Directory\DirectoryServicesFactory;
+use MintyPHP\Service\Tenant\TenantScopeService;
+use MintyPHP\Service\User\UserServicesFactory;
+
+final class AddressBookContainerRegistrar implements ContainerRegistrar
+{
+    public function register(AppContainer $container): void
+    {
+        $container->set(AddressBookServicesFactory::class, static fn (AppContainer $c): AddressBookServicesFactory => new AddressBookServicesFactory(
+            $c->get(UserServicesFactory::class),
+            $c->get(DirectoryServicesFactory::class),
+            $c->get(CustomFieldServicesFactory::class),
+            $c->get(TenantScopeService::class)
+        ));
+
+        $container->set(AddressBookService::class, static fn (AppContainer $c): AddressBookService => $c
+            ->get(AddressBookServicesFactory::class)
+            ->createAddressBookService());
+    }
+}