Feat: Login localization, design, märchenzauber feature complete webapp

packages/manadeck-database/src/schema/userStats.ts

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+import {
+  pgTable,
+  uuid,
+  integer,
+  decimal,
+  date,
+  timestamp,
+  index,
+} from 'drizzle-orm/pg-core';
+
+export const userStats = pgTable(
+  'user_stats',
+  {
+    userId: uuid('user_id').primaryKey(),
+    totalWins: integer('total_wins').default(0).notNull(),
+    totalSessions: integer('total_sessions').default(0).notNull(),
+    totalCardsStudied: integer('total_cards_studied').default(0).notNull(),
+    totalTimeSeconds: integer('total_time_seconds').default(0).notNull(),
+    averageAccuracy: decimal('average_accuracy', { precision: 5, scale: 2 }).default('0').notNull(),
+    streakDays: integer('streak_days').default(0).notNull(),
+    longestStreak: integer('longest_streak').default(0).notNull(),
+    lastStudyDate: date('last_study_date'),
+    createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull(),
+  },
+  (table) => [
+    index('idx_user_stats_total_wins').on(table.totalWins),
+    index('idx_user_stats_streak_days').on(table.streakDays),
+  ]
+);
+
+export type UserStats = typeof userStats.$inferSelect;
+export type NewUserStats = typeof userStats.$inferInsert;