diff --git a/.cursor/worktrees.json b/.cursor/worktrees.json
new file mode 100644
index 0000000..77e9744
--- /dev/null
+++ b/.cursor/worktrees.json
@@ -0,0 +1,5 @@
+{
+  "setup-worktree": [
+    "npm install"
+  ]
+}
diff --git a/.github/workflows/deploy-ec2.yml b/.github/workflows/deploy-ec2.yml
index f9b7127..1be812e 100644
--- a/.github/workflows/deploy-ec2.yml
+++ b/.github/workflows/deploy-ec2.yml
@@ -94,9 +94,9 @@ jobs:
           # Basic disk space check (do not touch volumes)
           echo "=== DISK SPACE CHECK ==="
           df -h
-          AVAILABLE_SPACE=\$(df -BG / | tail -1 | awk '{print \$4}' | sed 's/G//')
-          if [ "\$AVAILABLE_SPACE" -lt 5 ]; then
-            echo "⚠️  Low disk space: \${AVAILABLE_SPACE}GB available. Cleaning up dangling images..."
+          AVAILABLE_SPACE=$(df -BG / | tail -1 | awk '{print $4}' | sed 's/G//')
+          if [ "$AVAILABLE_SPACE" -lt 5 ]; then
+            echo "⚠️  Low disk space: ${AVAILABLE_SPACE}GB available. Cleaning up dangling images..."
             docker system prune -af --volumes=false || true
             docker image prune -af || true
             df -h