diff --git a/.gitignore b/.gitignore
index 341a22f..db2fe82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,3 +59,6 @@ scripts/sync-prod.ps1
 
 # Design handoff bundle (reference only, not committed)
 .design-tmp/
+
+# Git worktrees (local agent isolation)
+.worktrees/