Update app.py

app.py

@@ -4,7 +4,7 @@ os.environ.setdefault("GRADIO_USE_CDN", "true")
 
 import gradio as gr
 
-# (Optional) ZeroGPU probe — harmless on CPU. Will work once you switch HW to ZeroGPU.
+# Optional: harmless on CPU; useful once you switch to ZeroGPU hardware
 try:
     import spaces
     @spaces.GPU(duration=10)
@@ -13,11 +13,21 @@ try:
 except Exception:
     pass
 
-with gr.Blocks(title="Hello Space") as demo:
+# Build a tiny UI
+def echo(s: str) -> str:
+    return f"echo: {s}"
+
+with gr.Blocks(title="Hello Space") as _demo:
     gr.Markdown("### ✅ App is alive\nType to echo.")
     inp = gr.Textbox(label="Input", value="hello")
     out = gr.Textbox(label="Output")
-    inp.submit(lambda s: f"echo: {s}", inp, out)
+    inp.submit(echo, inp, out)
+
+# Expose all common names that the Space supervisor might look for
+demo = _demo.queue(max_size=8)  # primary export
+iface = demo                     # alias
+app = demo                       # another alias
 
-# IMPORTANT: expose a top-level `demo`, and DO NOT call .launch()
-demo = demo.queue(max_size=8)
+# For local debugging only (ignored on Spaces)
+if __name__ == "__main__":
+    demo.launch(server_name="0.0.0.0", server_port=7860)