feat: jedes Divi-Tool und lit/content-create erklärt seine Divi-Fähigkeiten (RequiresDiviFeatures, DeclaresRequirements, FeatureSets); Tabelle Tool → Fähigkeiten als Test

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

src/Abilities/DeclaresRequirements.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Abilities;
+
+defined('ABSPATH') || exit;
+
+/**
+ * A tool of the generic core that can reach another integration (lit/content-create with divi) and names what that
+ * call needs from it – as plain IDs, so the core imports nothing from the integration. The guard of the integration
+ * (DiviFeatureGate) reads the IDs; other guards ignore them.
+ */
+interface DeclaresRequirements
+{
+    /**
+     * @param array<string, mixed> $input
+     * @return list<string> IDs of the capabilities the call needs for $input ([] = it stays in the core).
+     */
+    public function requirements(array $input): array;
+}