deploy: music-lab rsync 항목 추가

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/deploy-nas.sh

@@ -43,6 +43,9 @@ rsync -a --delete \
 rsync -a --delete \
     --exclude ".git" \
     "$SRC/stock-lab/"      "$DST/stock-lab/"
+rsync -a --delete \
+    --exclude ".git" \
+    "$SRC/music-lab/"      "$DST/music-lab/"
 rsync -a --delete \
   --exclude ".git" \
   "$SRC/nginx/"          "$DST/nginx/"