feat: add Intel Mac (x64) support in Mac-Start.command

Co-authored-by: Zhangchen <2hangchen@users.noreply.github.com>
Closes #6

portable/Mac-Start.command

@@ -30,9 +30,11 @@ ARCH=$(uname -m)
 if [ "$ARCH" = "arm64" ]; then
     NODE_DIR="$APP_DIR/runtime/node-mac-arm64"
     echo -e "  ${GREEN}Apple Silicon (M series)${NC}"
+elif [ "$ARCH" = "x86_64" ]; then
+    NODE_DIR="$APP_DIR/runtime/node-mac-x64"
+    echo -e "  ${GREEN}Intel Mac (x64)${NC}"
 else
-    echo -e "  ${RED}This version only supports Apple Silicon (M1-M4).${NC}"
-    echo -e "  ${RED}Intel Mac is not supported in this release.${NC}"
+    echo -e "  ${RED}Unsupported architecture: $ARCH${NC}"
     echo ""
     read -p "  Press Enter to exit..."
     exit 1