Add trial system

server/db/pg/schema/privateSchema.ts

@@ -90,6 +90,8 @@ export const subscriptions = pgTable("subscriptions", {
     updatedAt: bigint("updatedAt", { mode: "number" }),
     version: integer("version"),
     billingCycleAnchor: bigint("billingCycleAnchor", { mode: "number" }),
+    expiresAt: bigint("expiresAt", { mode: "number" }),
+    trial: boolean("trial").default(false),
     type: varchar("type", { length: 50 }) // tier1, tier2, tier3, or license
 });