fix(backend): enhance sequence discovery from sister website directories and sync in post-receive

serverinfo/post-receive

@@ -90,6 +90,10 @@ $BUN install
 
 # สร้าง public/ folder สำหรับ static files (upload images)
 mkdir -p $TARGET_BACKEND/apps/backend/public
+if [ -d "$TEMP_DIR/apps/backend/public/frame-sequences" ]; then
+  mkdir -p $TARGET_BACKEND/apps/backend/public/frame-sequences
+  rsync -av "$TEMP_DIR/apps/backend/public/frame-sequences/" "$TARGET_BACKEND/apps/backend/public/frame-sequences/"
+fi
 
 cd $TARGET_BACKEND/apps/backend