Add update to POT setup script.

scripts/potoken_provider/setup_pot_provider.sh

@@ -3,12 +3,18 @@ set -e
 
 SCRIPTS_DIR="scripts/potoken_provider"
 BGUTIL_DIR="$SCRIPTS_DIR/bgutil-ytdlp-pot-provider"
+UPDATE=false
+
+# Parse optional flag
+if [[ "$1" == "--update" ]]; then
+    UPDATE=true
+fi
 
 # Clone the repository, or update if it exists
 if [ ! -d "$BGUTIL_DIR" ]; then
     echo "Cloning bgutil-ytdlp-pot-provider repository..."
     git clone https://github.com/Brainicism/bgutil-ytdlp-pot-provider.git "$BGUTIL_DIR"
-else
+elif [ "$UPDATE" == true ]; then
     echo "Updating existing bgutil-ytdlp-pot-provider repository..."
     cd "$BGUTIL_DIR" || exit 1
     git pull origin master
@@ -21,5 +27,5 @@ cd "$BGUTIL_DIR/server" || exit 1
 yarn install --frozen-lockfile
 npx tsc
 
-# The built script is now available
+# The built script is now available and can be used by the generic extractor
 echo "PO Token provider script is ready: $BGUTIL_DIR/server/build/generate_once.js"