Restructure backend into modular API layers with admin/organizador/invitados routes, add role-based middleware, flatten module models, and update build scripts

packages/server/src/api/gifts/dto/create-contribution.dto.ts

@@ -0,0 +1,11 @@
+import { z } from "zod";
+
+export const createContributionSchema = z.object({
+  giftId: z.string().uuid(),
+  contributorName: z.string().min(1),
+  contributorEmail: z.string().email().optional(),
+  amount: z.number().min(0),
+  type: z.enum(["individual", "group"]).optional(),
+});
+
+export type CreateContributionDto = z.infer<typeof createContributionSchema>;