refactor: Divi-Boot-Schritte in DiviIntegration::boot() (Bootable) – Upgrader-Hook, Prüf-Route, CLI und Reiter „Divi“ über lit_mcp_admin_tabs; IntegrationRegistry::boot() bootet jede Integration genau einmal; Prüfseiten-Aufräumen im load-Hook statt beim Rendern

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/Integrations/IntegrationRegistry.php

@@ -16,11 +16,32 @@ final class IntegrationRegistry
     /** @var list<array{Integration, list<Ability>}>|null Available integrations with their abilities. */
     private ?array $loaded = null;
 
+    private bool $booted = false;
+
     public function __construct(Integration ...$integrations)
     {
         $this->integrations = array_values($integrations);
     }
 
+    /**
+     * Boots every Bootable integration once, in registry order – available or not: Plugin boots on plugins_loaded,
+     * before the theme (Divi) is loaded, so isAvailable() is not known yet (as the hooks were registered before
+     * Bootable). A second call does nothing.
+     */
+    public function boot(): void
+    {
+        if ($this->booted) {
+            return;
+        }
+
+        $this->booted = true;
+        foreach ($this->integrations as $integration) {
+            if ($integration instanceof Bootable) {
+                $integration->boot();
+            }
+        }
+    }
+
     /** @return list<Integration> */
     public function available(): array
     {