docs: name tools and error codes the way the client sees them

Indirect abilities are written lit/<name> (via mcp-adapter-execute-ability) in
guides, descriptions and hints, direct tools lit-<name>; guides use the
client-visible codes (write_failed, partial_write) and say exactly which tools
return a revision_id. ToolNamingTest keeps guides and sources consistent with
Ability::isDirect() and checks the overview's direct-tool list.

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

src/Integrations/WordPress/Revisions/RevisionRestoreAbility.php

@@ -146,7 +146,7 @@ final class RevisionRestoreAbility implements Ability
         $revisionId = PostGuard::id($input['revision_id'] ?? null);
         $revision = $revisionId === null ? null : get_post($revisionId);
         if (! $revision instanceof WP_Post || $revision->post_type !== 'revision') {
-            return Errors::notFound('Revision nicht gefunden.', 'Revisionen über lit-revisions-list abrufen.');
+            return Errors::notFound('Revision nicht gefunden.', 'Revisionen über lit/revisions-list abrufen.');
         }
 
         // field 'revision_id': post_parent 0 (an orphaned revision) is the only id this