feat: add users and auth tables schema

Made-with: Cursor

src/db/schema/sessions.ts

@@ -0,0 +1,18 @@
+import { pgTable, uuid, varchar, timestamp } from 'drizzle-orm/pg-core';
+import { users } from './users.js';
+
+export const sessions = pgTable('sessions', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id')
+    .notNull()
+    .references(() => users.id, { onDelete: 'cascade' }),
+  refreshTokenHash: varchar('refresh_token_hash', { length: 255 }).notNull(),
+  userAgent: varchar('user_agent', { length: 500 }),
+  ipAddress: varchar('ip_address', { length: 45 }),
+  lastActiveAt: timestamp('last_active_at', { withTimezone: true }).notNull().defaultNow(),
+  expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
+  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+});
+
+export type Session = typeof sessions.$inferSelect;
+export type NewSession = typeof sessions.$inferInsert;