chmod harness tools

app.py

@@ -29,6 +29,8 @@ from transformers import AutoModelForImageTextToText, AutoProcessor, TextIterato
 ROOT = Path(__file__).resolve().parent
 HARNESS_ROOT = ROOT / "harness"
 sys.path.insert(0, str(HARNESS_ROOT))
+for _tool in (HARNESS_ROOT / "bin").iterdir():  # the Hub does not keep the executable bit
+    _tool.chmod(0o755)
 
 from video_coder_harness.blender_exec import execute as blender_execute  # noqa: E402
 from video_coder_harness.guard import (  # noqa: E402