creating init files

app.py

@@ -16,13 +16,13 @@ def load_document(file):
 
 def ask(question):
     if vectorstore is None:
-        return "Upload a document", "", ""
+        return "⚠ Upload a document first", "", ""
     if not question.strip():
-        return "Enter a question", "", ""
+        return "⚠ Please enter a question", "", ""
     try:
         return run_rag(question, vectorstore)
     except Exception as e:
-        return f"Error: {str(e)}", "", ""
+        return f"❌ Error: {str(e)}", "", ""
 
 with gr.Blocks(title="Tech Explainer RAG") as demo:
     gr.Markdown("# Tech Explainer — RAG with Automatic Evaluation")
@@ -43,5 +43,4 @@ with gr.Blocks(title="Tech Explainer RAG") as demo:
     load_btn.click(load_document, inputs=file, outputs=status)
     ask_btn.click(ask, inputs=question, outputs=[answer, sources, evaluation])
 
-if __name__ == "__main__":
-    demo.queue().launch()
+demo.launch(server_name="0.0.0.0", server_port=7860)