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/WordPress/Status/PostScheduleAbility.php

@@ -7,6 +7,7 @@ namespace LIT\MCP\Integrations\WordPress\Status;
 use DateTimeImmutable;
 use DateTimeZone;
 use LIT\MCP\Abilities\Ability;
+use LIT\MCP\Abilities\Annotations;
 use LIT\MCP\Abilities\Errors;
 use LIT\MCP\Abilities\ToolResult;
 use LIT\MCP\ChangeLog\ChangeLog;
@@ -71,7 +72,7 @@ final class PostScheduleAbility implements Ability
 
     public function annotations(): array
     {
-        return ['readonly' => false, 'destructive' => false, 'idempotent' => true];
+        return Annotations::write(true);
     }
 
     public function isDirect(): bool