Used main branch as base branch in the last time

src/utils/ai.detection.ts

@@ -0,0 +1,11 @@
+import { UserSolution } from "@/interfaces/exam";
+export default function ai_usage(solutions: UserSolution[]): number {
+    return solutions.reduce((max, solution) => {
+        if (solution.type == "writing") {
+            const aiUse = solution.solutions[0].evaluation?.ai_detection?.class_probabilities["ai"];
+            return aiUse !== undefined ? Math.max(max, aiUse) : max;
+        } else {
+            return 0;
+        }
+    }, 0);
+}