builder: ensure bin dir exists

builder/builder.py

@@ -233,6 +233,10 @@ class Builder:
             build_info.board,
             "bin"
         )
+
+        # Ensure bin_path exists
+        Path.mkdir(bin_path, exist_ok=True)
+
         bin_list = os.listdir(bin_path)
         self.logger.debug(f"bin_path: {bin_path}")
         self.logger.debug(f"bin_list: {bin_list}")