feat: 支持同卡种续卡叠加并修复过期登录态

支付成功后将次数或有效期叠加到已有会员卡，首页与详情页引导续卡；接口 401 时同步清掉本地登录态。

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/server/prisma/migrations/20260907040000_add_membership_renewal_fields/migration.sql

@@ -0,0 +1,20 @@
+-- AlterTable
+ALTER TABLE `memberships` ADD COLUMN `total_times` INTEGER NULL;
+
+-- AlterTable
+ALTER TABLE `orders` ADD COLUMN `membership_id` VARCHAR(191) NULL;
+
+-- CreateIndex
+CREATE INDEX `memberships_user_id_card_type_id_idx` ON `memberships`(`user_id`, `card_type_id`);
+
+-- CreateIndex
+CREATE INDEX `orders_membership_id_idx` ON `orders`(`membership_id`);
+
+-- AddForeignKey
+ALTER TABLE `orders` ADD CONSTRAINT `orders_membership_id_fkey` FOREIGN KEY (`membership_id`) REFERENCES `memberships`(`id`) ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- Backfill purchased-times snapshot for existing times/trial cards
+UPDATE `memberships` `m`
+INNER JOIN `card_types` `ct` ON `ct`.`id` = `m`.`card_type_id`
+SET `m`.`total_times` = `ct`.`total_times`
+WHERE `ct`.`total_times` IS NOT NULL AND `m`.`total_times` IS NULL;