fixed so the code compiles

node_modules/.prisma/client/schema.prisma

@@ -0,0 +1,119 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+enum Grade {
+  G3
+  G6
+  G9
+}
+
+enum Subject {
+  MATH
+  READING
+  WRITING
+}
+
+enum Difficulty {
+  EASY
+  MEDIUM
+  HARD
+}
+
+enum SessionStatus {
+  IN_PROGRESS
+  COMPLETED
+  ABANDONED
+}
+
+model User {
+  id          String   @id @default(cuid())
+  googleId    String   @unique
+  email       String   @unique
+  displayName String
+  username    String   @unique
+  avatarUrl   String?
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  sessions           GameSession[]
+  leaderboardEntries LeaderboardEntry[]
+  matchResults       MatchResult[]
+}
+
+model Question {
+  id            String     @id @default(cuid())
+  grade         Grade
+  subject       Subject
+  strand        String
+  difficulty    Difficulty
+  questionText  String
+  options       Json
+  correctAnswer String
+  explanation   String?
+  createdAt     DateTime   @default(now())
+
+  answers UserAnswer[]
+}
+
+model GameSession {
+  id             String        @id @default(cuid())
+  userId         String
+  grade          Grade
+  subject        Subject
+  status         SessionStatus @default(IN_PROGRESS)
+  score          Int           @default(0)
+  totalQuestions Int
+  correctAnswers Int           @default(0)
+  startedAt      DateTime      @default(now())
+  completedAt    DateTime?
+
+  user    User         @relation(fields: [userId], references: [id])
+  answers UserAnswer[]
+}
+
+model UserAnswer {
+  id             String   @id @default(cuid())
+  sessionId      String
+  questionId     String
+  selectedAnswer String
+  isCorrect      Boolean
+  timeSpentMs    Int
+  answeredAt     DateTime @default(now())
+
+  session  GameSession @relation(fields: [sessionId], references: [id])
+  question Question    @relation(fields: [questionId], references: [id])
+}
+
+model LeaderboardEntry {
+  id           String   @id @default(cuid())
+  userId       String
+  grade        Grade
+  elo          Int      @default(800)
+  bestTime     Int?
+  gamesPlayed  Int      @default(0)
+  totalCorrect Int      @default(0)
+  updatedAt    DateTime @updatedAt
+
+  user User @relation(fields: [userId], references: [id])
+
+  @@unique([userId, grade])
+}
+
+model MatchResult {
+  id          String   @id @default(cuid())
+  userId      String
+  grade       Grade
+  won         Boolean
+  eloChange   Int
+  eloAfter    Int
+  timeSpentMs Int?
+  playedAt    DateTime @default(now())
+
+  user User @relation(fields: [userId], references: [id])
+}