feat: add users and auth tables schema

Made-with: Cursor

src/db/schema/subscriptions.ts

@@ -0,0 +1,21 @@
+import { pgTable, uuid, varchar, timestamp } from 'drizzle-orm/pg-core';
+import { planEnum, subscriptionStatusEnum } from './enums.js';
+import { users } from './users.js';
+
+export const subscriptions = pgTable('subscriptions', {
+  id: uuid('id').primaryKey().defaultRandom(),
+  userId: uuid('user_id')
+    .notNull()
+    .references(() => users.id, { onDelete: 'cascade' })
+    .unique(),
+  plan: planEnum('plan').notNull(),
+  status: subscriptionStatusEnum('status').notNull(),
+  startedAt: timestamp('started_at', { withTimezone: true }).notNull(),
+  expiresAt: timestamp('expires_at', { withTimezone: true }),
+  cancelledAt: timestamp('cancelled_at', { withTimezone: true }),
+  paymentProvider: varchar('payment_provider', { length: 50 }),
+  externalId: varchar('external_id', { length: 255 }),
+});
+
+export type Subscription = typeof subscriptions.$inferSelect;
+export type NewSubscription = typeof subscriptions.$inferInsert;