Add database and Prisma configurations, enhance event and leaderboard components with API integration, and update navigation for session management

prisma/schema.prisma

@@ -0,0 +1,81 @@
+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+generator client {
+  provider = "prisma-client"
+  output   = "./generated/prisma"
+}
+
+datasource db {
+  provider = "sqlite"
+}
+
+enum Role {
+  USER
+  ADMIN
+}
+
+enum EventType {
+  SUMMIT
+  LAUNCH
+  FESTIVAL
+  COMPETITION
+}
+
+enum EventStatus {
+  UPCOMING
+  LIVE
+  PAST
+}
+
+model User {
+  id            String    @id @default(cuid())
+  email         String    @unique
+  password      String
+  username      String    @unique
+  role          Role      @default(USER)
+  score         Int       @default(0)
+  level         Int       @default(1)
+  hp            Int       @default(1000)
+  maxHp         Int       @default(1000)
+  xp            Int       @default(0)
+  maxXp         Int       @default(5000)
+  avatar        String?
+  createdAt     DateTime  @default(now())
+  updatedAt     DateTime  @updatedAt
+  preferences   UserPreferences?
+  
+  @@index([score])
+  @@index([email])
+}
+
+model UserPreferences {
+  id              String   @id @default(cuid())
+  userId          String   @unique
+  user            User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  
+  // Background images for each page
+  homeBackground  String?
+  eventsBackground String?
+  leaderboardBackground String?
+  
+  // Other UI preferences can be added here
+  theme           String?  @default("default")
+  
+  createdAt       DateTime @default(now())
+  updatedAt       DateTime @updatedAt
+}
+
+model Event {
+  id          String      @id @default(cuid())
+  date        String
+  name        String
+  description String
+  type        EventType
+  status      EventStatus
+  createdAt   DateTime    @default(now())
+  updatedAt   DateTime    @updatedAt
+  
+  @@index([status])
+  @@index([date])
+}