Fix column mismatch in results DataFrame - add rank column

app.py

@@ -164,6 +164,7 @@ def run_evaluation(dataset_name: str, dialect: str, case_selection: str,
             
             # Format for display using config
             results.append([
+                len(results) + 1,  # Rank (1-based)
                 model_name,
                 formatting["composite_score"].format(result['composite_score']),
                 formatting["correctness_exact"].format(result['correctness_exact']),
@@ -194,7 +195,7 @@ def run_evaluation(dataset_name: str, dialect: str, case_selection: str,
         except Exception as e:
             error_msg = f"Error evaluating {model_name}: {str(e)}"
             print(error_msg)
-            results.append([model_name, "ERROR", "ERROR", "ERROR", "ERROR", "ERROR"])
+            results.append([len(results) + 1, model_name, "ERROR", "ERROR", "ERROR", "ERROR", "ERROR"])
             detailed_results.append(f"**Error with {model_name}:** {error_msg}\n\n---\n")
     
     # Create results DataFrame using config