Fix response parsing for API format

app.py

@@ -82,7 +82,7 @@ def run_verification(num_variables: int, num_trials: int, progress=gr.Progress()
 
         data = response.json()
 
-        if data.get("status") != "success":
+        if not data.get("success"):
             return format_error(data.get("error", "Unknown error"))
 
         progress(0.8, desc="Processing results...")
@@ -92,7 +92,16 @@ def run_verification(num_variables: int, num_trials: int, progress=gr.Progress()
         # Calculate metrics
         mean_satisfaction = results.get("mean_satisfaction", 0)
         std_satisfaction = results.get("std_satisfaction", 0)
-        quality_tier = results.get("quality_tier", "UNKNOWN")
+
+        # Derive quality tier from satisfaction percentage
+        if mean_satisfaction >= 95:
+            quality_tier = "EXCELLENT"
+        elif mean_satisfaction >= 85:
+            quality_tier = "GOOD"
+        elif mean_satisfaction >= 70:
+            quality_tier = "ACCEPTABLE"
+        else:
+            quality_tier = "LOW"
 
         # Energy calculation
         energy_joules = HARDWARE_INFO["typical_power"] * elapsed_time