refactor: Rev::matches replaces the inline rev checks

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

src/Abilities/Rev.php

@@ -32,4 +32,14 @@ final class Rev
             (string) $post->post_modified_gmt,
         ]));
     }
+
+    /**
+     * Whether $input carries the current rev of $post (optimistic lock of the post tools).
+     *
+     * @param array<string, mixed> $input
+     */
+    public static function matches(array $input, WP_Post $post): bool
+    {
+        return isset($input['rev']) && $input['rev'] === self::ofPost($post);
+    }
 }

src/Integrations/WordPress/Content/ContentUpdateAbility.php

@@ -109,7 +109,7 @@ final class ContentUpdateAbility implements Ability
             return $post;
         }
 
-        if (! isset($input['rev']) || $input['rev'] !== Rev::ofPost($post)) {
+        if (! Rev::matches($input, $post)) {
             return Errors::revMismatch();
         }
 

src/Integrations/WordPress/Revisions/RevisionRestoreAbility.php

@@ -107,7 +107,7 @@ final class RevisionRestoreAbility implements Ability
             ));
         }
 
-        if (! isset($input['rev']) || $input['rev'] !== Rev::ofPost($post)) {
+        if (! Rev::matches($input, $post)) {
             return Errors::revMismatch();
         }
 

src/Integrations/WordPress/Status/PostReplaceWithCopyAbility.php

@@ -185,7 +185,7 @@ final class PostReplaceWithCopyAbility implements Ability
             );
         }
 
-        if (! isset($input['rev']) || $input['rev'] !== Rev::ofPost($original)) {
+        if (! Rev::matches($input, $original)) {
             return Errors::revMismatch();
         }