fix(tia): detect renames in both porcelain status columns

src/Plugins/Tia/ChangedFiles.php

@@ -359,7 +359,7 @@ private function workingTreeChanges(): array
             $status = substr($record, 0, 2);
             $path = substr($record, 3);
 
-            if ($status[0] === 'R' || $status[0] === 'C') {
+            if (str_contains($status, 'R') || str_contains($status, 'C')) {
                 $files[] = $path;
 
                 if (isset($records[$i + 1]) && $records[$i + 1] !== '') {

tests/Features/Tia/WorktreeRename.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+use Pest\Plugins\Tia\ChangedFiles;
+use Tests\Fixtures\Tia\Project;
+
+afterEach(function (): void {
+    Project::destroyAll();
+});
+
+test('a worktree rename recorded as intent-to-add keeps both paths', function (): void {
+    $project = Project::make('master');
+
+    $project->write('app/Stub.php', 'same content');
+    $project->git()->commit('add a file that will be moved');
+
+    $project->write('lib/Stub.php', 'same content');
+    $project->git()->run(['add', '-N', 'lib/Stub.php']);
+    unlink($project->path('app/Stub.php'));
+
+    $changed = (new ChangedFiles($project->path()))->since(null);
+
+    expect($changed)->toContain('app/Stub.php')
+        ->and($changed)->toContain('lib/Stub.php');
+});