fix(api): fix api logic for exam screen

needs more work for the timercontext

types/exam.d.ts

@@ -24,42 +24,3 @@ export interface Test {
 
 export type Answer = number | null;
 export type AnswersMap = Record<string, Answer>;
-
-export interface TestAttempt {
-  user_id: string | undefined;
-  test_id: string;
-  subject_id: string;
-  topic_id: string;
-  test_type: "Subject" | "Topic" | "Mock" | "Past";
-  attempt_id: string;
-  start_time: string;
-  end_time: string;
-  user_questions: Question[];
-  user_answers: (number | null)[];
-  correct_answers: number[];
-  correct_answers_count: number;
-  wrong_answers_count: number;
-  skipped_questions_count: number;
-}
-
-export interface TestContextType {
-  currentExam: Test | null;
-  currentAttempt: TestAttempt | null;
-  isHydrated: boolean;
-  isInitialized: boolean;
-
-  // Actions
-  setCurrentExam: (exam: Test) => void;
-  startExam: (exam?: Test) => void;
-  setAnswer: (questionId: string, answer: Answer) => void;
-  submitExam: () => TestAttempt | null; // or Promise<TestAttempt | null> if API
-  clearExam: () => void;
-  setApiResponse: (response: any) => void;
-
-  // Getters
-  getAnswer: (questionId: string) => Answer;
-  getProgress: () => number;
-  isExamStarted: () => boolean;
-  isExamCompleted: () => boolean;
-  getApiResponse: () => any;
-}