refactor: annotation presets (L5)

The 41 abilities return Annotations::read(), ::write(idempotent) or
::destructive(idempotent) instead of hand-written arrays (same arrays, same
key order).

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

src/Integrations/Divi/Pages/DiviUpdateAbility.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace LIT\MCP\Integrations\Divi\Pages;
 
+use LIT\MCP\Abilities\Annotations;
 use LIT\MCP\Abilities\Errors;
 use LIT\MCP\Integrations\Divi\BlockTree\Block;
 use LIT\MCP\Integrations\Divi\Compose\ColumnWidths;
@@ -73,7 +74,7 @@ final class DiviUpdateAbility extends DiviWriteAbility
 
     public function annotations(): array
     {
-        return ['readonly' => false, 'destructive' => false, 'idempotent' => true];
+        return Annotations::write(true);
     }
 
     protected function change(DiviPage $page, array $input, DiviComposition $composition): DiviChange|WP_Error