后端建立 TypeScript 构建链路

apps/backend/src/utils/time.ts

@@ -0,0 +1,8 @@
+export function nowIso(): string {
+  return new Date().toISOString()
+}
+
+export function addHours(baseIso: string | null | undefined, hours: number): string {
+  const baseTime = baseIso ? new Date(baseIso).getTime() : Date.now()
+  return new Date(baseTime + hours * 60 * 60 * 1000).toISOString()
+}