feat: adapter-level Divi release lock, content-create and site status

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

src/Integrations/Divi/Library/DiviLibraryStore.php

@@ -7,8 +7,10 @@ namespace LIT\MCP\Integrations\Divi\Library;
 use LIT\MCP\Abilities\WriteFailed;
 use LIT\MCP\Integrations\Divi\Release\Call;
 use LIT\MCP\Integrations\Divi\Release\DiviAdapter;
+use LIT\MCP\Integrations\Divi\Release\DiviLocked;
 use LIT\MCP\Integrations\Divi\Release\Manifest;
 use LIT\MCP\Integrations\Divi\Release\Mirror;
+use LIT\MCP\Integrations\Divi\Release\ReleaseGate;
 use LIT\MCP\Integrations\WordPress\Content\NewDraft;
 use RuntimeException;
 use Throwable;
@@ -211,9 +213,11 @@ class DiviLibraryStore implements DiviAdapter
      * when that delete fails; a throwing insert hook is a partial write without ID.
      *
      * @throws WriteFailed
+     * @throws DiviLocked When Divi is not released (spec §5.5) – before anything is written.
      */
     public function create(LibraryItemSpec $spec, NewDraft $draft): int
     {
+        ReleaseGate::assertWritable();
         $missing = $this->missingTaxonomies();
         if ($missing !== []) {
             throw WriteFailed::rolledBack(