fix for data dir on hf space

app.py

@@ -26,6 +26,7 @@ from runs import (
     RunResult,
     create_run,
     ensure_data_dirs,
+    get_data_dir,
     load_runs,
     save_output_video,
     save_run,
@@ -198,4 +199,7 @@ with gr.Blocks(title="Kaleidoscope") as demo:
 demo.queue()
 
 if __name__ == "__main__":
-    demo.launch()
+    # /data (on a Hugging Face Space) lives outside the cwd and the system
+    # temp dir, so Gradio refuses to serve run files from it unless the
+    # directory is explicitly allow-listed here.
+    demo.launch(allowed_paths=[get_data_dir()])

runs.py

@@ -56,6 +56,12 @@ def ensure_data_dirs() -> None:
         os.makedirs(RUNS_DIR, exist_ok=True)
 
 
+def get_data_dir() -> str:
+    """Returns the data directory actually in use (call after
+    ensure_data_dirs(), since it may fall back to a local directory)."""
+    return DATA_DIR
+
+
 def create_run(image_path: str) -> tuple[str, str, str]:
     """Creates a new run directory and copies the uploaded image into it as the input.