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/Support/DiviWriterFixture.php

@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 namespace LIT\MCP\Tests\Support;
 
-use LIT\MCP\ChangeLog\ChangeLog;
 use LIT\MCP\Integrations\Divi\Design\DesignSystemReader;
 use LIT\MCP\Integrations\Divi\Pages\DiviComposition;
 use LIT\MCP\Integrations\Divi\Pages\DiviPageLoader;
@@ -83,13 +82,10 @@ final class DiviWriterFixture
         return $saver;
     }
 
-    /** A ChangeLog that accepts every record (log id 4711). */
-    public static function log(): ChangeLog
+    /** A ChangeLog that accepts records (log ids from 4711). */
+    public static function log(): FakeChangeLog
     {
-        $log = Mockery::mock(ChangeLog::class);
-        $log->allows('record')->andReturn(4711);
-
-        return $log;
+        return new FakeChangeLog(4711);
     }
 
     /**