feat: content-types tool and WordPress integration

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

src/Plugin.php

@@ -11,6 +11,11 @@ use LIT\MCP\ChangeLog\ChangeLogInstaller;
 use LIT\MCP\Guides\InstructionsBuilder;
 use LIT\MCP\Integrations\Core\CoreIntegration;
 use LIT\MCP\Integrations\IntegrationRegistry;
+use LIT\MCP\Integrations\Pods\PodsFieldSource;
+use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
+use LIT\MCP\Integrations\WordPress\Schema\RegisteredMetaSource;
+use LIT\MCP\Integrations\WordPress\Schema\SampledMetaSource;
+use LIT\MCP\Integrations\WordPress\WordPressIntegration;
 use LIT\MCP\Server\RequestContext;
 use LIT\MCP\Server\ServerRegistrar;
 
@@ -40,12 +45,17 @@ final class Plugin
         (new ChangeLogInstaller($changeLog))->maybeInstall();
         (new ChangeLogCleanup($changeLog, new Limits()))->register();
 
+        $schema = self::contentSchema();
         $registry = new IntegrationRegistry(
-            new CoreIntegration(self::pluginDir() . '/docs/guides')
+            new CoreIntegration(self::pluginDir() . '/docs/guides'),
+            new WordPressIntegration($schema, $changeLog)
         );
 
         (new AbilityRegistrar($registry))->register();
-        (new ServerRegistrar($registry, new InstructionsBuilder($registry)))->register();
+        (new ServerRegistrar(
+            $registry,
+            new InstructionsBuilder($registry, static fn (): array => $schema->postTypeNames())
+        ))->register();
 
         \WPMedia\MCP\OAuth\Bootstrap::instance();
     }
@@ -71,4 +81,14 @@ final class Plugin
             );
         });
     }
+
+    private static function contentSchema(): ContentSchema
+    {
+        $sources = [new RegisteredMetaSource(), new SampledMetaSource()];
+        if (PodsFieldSource::isAvailable()) {
+            array_unshift($sources, new PodsFieldSource());
+        }
+
+        return new ContentSchema($sources);
+    }
 }