Update app.py

app.py

@@ -2,9 +2,9 @@
 import os
 os.environ.setdefault("GRADIO_USE_CDN", "true")
 
-# 'spaces' is present on HF Spaces; make it safe locally too
+# Make 'spaces' safe locally too
 try:
-    import spaces
+    import spaces  # HF Spaces SDK
 except Exception:
     class _DummySpaces:
         def GPU(self, *_, **__):
@@ -178,13 +178,14 @@ def list_example_files(progress: Optional[gr.Progress] = None) -> List[str]:
 
 def load_examples(_: Any = None, progress=gr.Progress()):
     """
-    Returns (choices:list[str], paths:list[str], status:str)
+    Returns (dropdown_update, paths:list[str], status:str)
     """
     paths = list_example_files(progress=progress)
     if not paths:
-        return [], [], "No sample .wav files found in repo/samples/inputs."
-    choices = [f"{i+1:02d} — {Path(p).name}" for i, p in enumerate(paths)]
-    return choices, paths, f"Loaded {len(paths)} sample audios."
+        return gr.Dropdown.update(choices=[], value=None), [], "No sample .wav files found in repo/samples/inputs."
+    labels = [f"{i+1:02d} — {Path(p).name}" for i, p in enumerate(paths)]
+    # Auto-select first item for convenience
+    return gr.Dropdown.update(choices=labels, value=labels[0]), paths, f"Loaded {len(paths)} sample audios."
 
 def set_example_selection(idx_label: str, paths: List[str]) -> Tuple[str, str]:
     """When user picks an example, set the audio path + a suggested prompt."""
@@ -249,15 +250,17 @@ with gr.Blocks(title="SonicMaster – Text-Guided Restoration & Mastering", fill
     gr.Markdown(
         "## 🎧 SonicMaster\n"
         "Upload audio or **load sample audios**, write a prompt, then click **Enhance**.\n"
-        "- First run downloads model weights & repo (progress will show).\n"
-        "- On failure, the **Status** box shows the exact error (we won't echo the input audio)."
     )
     with gr.Row():
         with gr.Column(scale=1):
             # Sample loader (lazy)
             with gr.Accordion("Sample audios (10)", open=False):
                 load_btn = gr.Button("📥 Load 10 sample audios")
-                samples_dropdown = gr.Dropdown(choices=[], label="Pick a sample", interactive=True)
+                samples_dropdown = gr.Dropdown(
+                    choices=[], value=None,  # no default until choices are set
+                    label="Pick a sample",
+                    interactive=True,
+                )
                 samples_state = gr.State([])  # holds absolute paths
 
             in_audio = gr.Audio(label="Input Audio", type="filepath")