test: FakeChangeLog and SchemaFixture instead of repeated mocks (T2)

- tests/Support/FakeChangeLog extends ChangeLog: records record()/recordPartial()
  calls, increasing ids, optional failure; new FakeChangeLog(id) / partialsOnly() /
  any(id) / forbidden() mirror what the replaced mocks allowed. assertRecorded() /
  assertPartials() check count and the named arguments. Calls a fake does not allow
  throw and are also verified in TestCase::tearDown (one assertion per test that
  uses a fake), so swallowed change-log calls still fail like a never() expectation.
- All ChangeLog mocks of ability/integration tests replaced (the admin tests that
  stub query/purge/clear keep their mocks); expectException tests that checked the
  partial log now catch and assert.
- SchemaFixture::managed(?divi) replaces the 21 isManaged-only ContentSchema mocks;
  DiviFixtures::schema() uses it.
Tests 1397 -> 1404 (FakeChangeLogTest); no test has fewer assertions.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tests/Unit/Integrations/WordPress/Content/ContentQueryAbilityTest.php

@@ -10,6 +10,7 @@ use LIT\MCP\Integrations\WordPress\Content\ContentQueryAbility;
 use LIT\MCP\Integrations\WordPress\Content\PostPresenter;
 use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
 use LIT\MCP\Integrations\WordPress\Schema\FieldDefinition;
+use LIT\MCP\Tests\Support\SchemaFixture;
 use LIT\MCP\Tests\Unit\TestCase;
 use Mockery;
 use WP_Post;
@@ -241,8 +242,7 @@ final class ContentQueryAbilityTest extends TestCase
     {
         Functions\when('get_post_type_object')->justReturn((object) ['cap' => (object) ['edit_posts' => 'edit_posts']]);
         Functions\when('current_user_can')->justReturn(false);
-        $schema = Mockery::mock(ContentSchema::class);
-        $schema->allows('isManaged')->andReturn(true);
+        $schema = SchemaFixture::managed();
         $ability = new ContentQueryAbility($schema, Mockery::mock(PostPresenter::class));
 
         self::assertSame('lit_forbidden', $ability->permission(['post_type' => 'page'])->get_error_code());