add: user lock on reservations

src/lib/server/schema.ts

@@ -117,6 +117,7 @@ export const reservations = pgTable('reservations', {
 	itemId: text('item_id')
 		.notNull()
 		.references(() => items.id, { onDelete: 'cascade' }),
+	userId: text('user_id').references(() => users.id, { onDelete: 'set null' }),
 	reserverName: text('reserver_name'),
 	createdAt: timestamp('created_at').defaultNow().notNull()
 });
@@ -125,6 +126,10 @@ export const reservationsRelations = relations(reservations, ({ one }) => ({
 	item: one(items, {
 		fields: [reservations.itemId],
 		references: [items.id]
+	}),
+	user: one(users, {
+		fields: [reservations.userId],
+		references: [users.id]
 	})
 }));
 
@@ -154,7 +159,8 @@ export const savedWishlistsRelations = relations(savedWishlists, ({ one }) => ({
 
 export const usersRelations = relations(users, ({ many }) => ({
 	wishlists: many(wishlists),
-	savedWishlists: many(savedWishlists)
+	savedWishlists: many(savedWishlists),
+	reservations: many(reservations)
 }));
 
 export type User = typeof users.$inferSelect;