feat: initial project setup for Meme Studio

Next.js 14 App Router application for managing homophone pun game levels:

- Better Auth with Prisma adapter for authentication
- MySQL database with Prisma ORM
- Level CRUD operations with drag-and-drop reordering
- Tencent COS integration for image uploads
- shadcn/ui components with Tailwind CSS
- TanStack Query for server state management

prisma/schema.prisma

@@ -0,0 +1,86 @@
+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "mysql"
+  url      = env("DATABASE_URL")
+}
+
+model Level {
+  id         String   @id @default(uuid())
+  imageUrl   String   @map("image_url")
+  answer     String
+  hint1      String?
+  hint2      String?
+  hint3      String?
+  sortOrder  Int      @default(0) @map("sort_order")
+  createdAt  DateTime @default(now()) @map("created_at")
+  updatedAt  DateTime @updatedAt @map("updated_at")
+
+  @@map("levels")
+}
+
+model User {
+  id            String    @id @default(uuid())
+  email         String    @unique
+  emailVerified Boolean   @default(false) @map("email_verified")
+  name          String?
+  image         String?
+  createdAt     DateTime  @default(now()) @map("created_at")
+  updatedAt     DateTime  @updatedAt @map("updated_at")
+
+  sessions  Session[]
+  accounts  Account[]
+
+  @@map("users")
+}
+
+model Session {
+  id           String   @id
+  expiresAt    DateTime @map("expires_at")
+  token        String   @unique
+  ipAddress    String?  @map("ip_address")
+  userAgent    String?  @map("user_agent")
+  userId       String   @map("user_id")
+  createdAt    DateTime @default(now()) @map("created_at")
+  updatedAt    DateTime @updatedAt @map("updated_at")
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@map("sessions")
+}
+
+model Account {
+  id                String  @id @default(uuid())
+  accountId         String  @map("account_id")
+  providerId        String  @map("provider_id")
+  userId            String  @map("user_id")
+  accessToken       String? @map("access_token")
+  refreshToken      String? @map("refresh_token")
+  idToken           String? @map("id_token")
+  accessTokenExpires DateTime? @map("access_token_expires")
+  refreshTokenExpires DateTime? @map("refresh_token_expires")
+  scope             String?
+  password          String?
+  createdAt         DateTime @default(now()) @map("created_at")
+  updatedAt         DateTime @updatedAt @map("updated_at")
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@map("accounts")
+}
+
+model Verification {
+  id         String   @id @default(uuid())
+  identifier String
+  value      String
+  expiresAt  DateTime @map("expires_at")
+  createdAt  DateTime @default(now()) @map("created_at")
+  updatedAt  DateTime @updatedAt @map("updated_at")
+
+  @@map("verifications")
+}