Fix schema validation and launch parameters

app.py

@@ -6,6 +6,7 @@ Based on successful Step 4 but with simple return function
 
 import os
 import ssl
+import json
 
 # Multiple SSL fixes for Windows/conda environments
 try:
@@ -59,8 +60,8 @@ def simple_test_function(vehicle_type, user_description):
 
 Status: ✅ SUCCESS"""
     
-    # JSON output as dictionary (works with Gradio 4.40.0)
-    json_output = {
+    # JSON output as formatted string (avoids schema validation issues)
+    json_data = {
         "vehicle_type": vehicle_type,
         "description": user_description,
         "status": "completed",
@@ -76,6 +77,7 @@ Status: ✅ SUCCESS"""
             "Low battery warning"
         ]
     }
+    json_output = json.dumps(json_data, indent=2)
     
     progress_value = 100
     status_message = "🎉 Design process completed successfully!"
@@ -175,9 +177,11 @@ def create_minimal_working_app():
                     )
                 
                 with gr.Tab("⚙️ Technical Specifications"):
-                    specs_output = gr.JSON(
-                        label="🔧 Vehicle Parameters & Specifications",
-                        value={}
+                    specs_output = gr.Textbox(
+                        label="🔧 Vehicle Parameters & Specifications (JSON Format)",
+                        lines=8,
+                        value="",
+                        interactive=False
                     )
                     
                     progress_output = gr.Slider(
@@ -247,9 +251,7 @@ if __name__ == "__main__":
             show_error=True,
             inbrowser=True,
             quiet=False,
-            debug=False,
-            show_tips=True,
-            enable_queue=True
+            debug=False
         )
         
     except Exception as e: