fix(api): exam logic yet to be fixed

context/TimerContext.tsx

@@ -23,7 +23,7 @@ export const TimerProvider: React.FC<{ children: React.ReactNode }> = ({
   const [timeRemaining, setTimeRemaining] = useState<number>(0);
   const timerRef = useRef<NodeJS.Timeout | null>(null);
 
-  // countdown effect
+  // Effect: run interval whenever timeRemaining is set > 0
   useEffect(() => {
     if (timeRemaining > 0 && !timerRef.current) {
       timerRef.current = setInterval(() => {
@@ -39,16 +39,18 @@ export const TimerProvider: React.FC<{ children: React.ReactNode }> = ({
     }
 
     return () => {
-      if (timerRef.current) {
+      if (timerRef.current && timeRemaining <= 0) {
         clearInterval(timerRef.current);
         timerRef.current = null;
       }
     };
-  }, [timeRemaining]);
+  }, [timeRemaining]); // 👈 depend on timeRemaining
 
   const resetTimer = (duration: number) => {
-    if (timerRef.current) clearInterval(timerRef.current);
-    timerRef.current = null;
+    if (timerRef.current) {
+      clearInterval(timerRef.current);
+      timerRef.current = null;
+    }
     setTimeRemaining(duration);
   };
 
@@ -57,11 +59,14 @@ export const TimerProvider: React.FC<{ children: React.ReactNode }> = ({
       clearInterval(timerRef.current);
       timerRef.current = null;
     }
+    setTimeRemaining(0);
   };
 
   const setInitialTime = (duration: number) => {
-    if (timerRef.current) clearInterval(timerRef.current);
-    timerRef.current = null;
+    if (timerRef.current) {
+      clearInterval(timerRef.current);
+      timerRef.current = null;
+    }
     setTimeRemaining(duration);
   };