chore: ignore local git worktrees

LessUp · Copilot · LessUp · commit c00ef0a6869d · 2026-04-26T17:06:26.000+08:00
Co-authored-by: Copilot &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/.gitignore b/.gitignore
@@ -74,6 +74,9 @@ docs/.vitepress/cache/
 # OpenSpec
 .openspec-cache/
 
+# Git worktrees
+.worktrees/
+
 # Migration backup (temporary)
 specs-backup-*.tar.gz
 
