feat: change log table with retention cron and limits option

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7

src/Plugin.php

@@ -5,6 +5,9 @@ declare(strict_types=1);
 namespace LIT\MCP;
 
 use LIT\MCP\Abilities\AbilityRegistrar;
+use LIT\MCP\ChangeLog\ChangeLog;
+use LIT\MCP\ChangeLog\ChangeLogCleanup;
+use LIT\MCP\ChangeLog\ChangeLogInstaller;
 use LIT\MCP\Guides\InstructionsBuilder;
 use LIT\MCP\Integrations\Core\CoreIntegration;
 use LIT\MCP\Integrations\IntegrationRegistry;
@@ -33,6 +36,10 @@ final class Plugin
         (new Access())->register();
         (new RequestContext())->register();
 
+        $changeLog = new ChangeLog();
+        (new ChangeLogInstaller($changeLog))->maybeInstall();
+        (new ChangeLogCleanup($changeLog, new Limits()))->register();
+
         $registry = new IntegrationRegistry(
             new CoreIntegration(self::pluginDir() . '/docs/guides')
         );