feat: turbostarter boilerplate

Production-ready Next.js boilerplate with:
- Runtime env validation (fail-fast on missing vars)
- Feature-gated config (S3, Stripe, email, OAuth)
- Docker + Coolify deployment pipeline
- PostgreSQL + pgvector, MinIO S3, Better Auth
- TypeScript strict mode (no ignoreBuildErrors)
- i18n (en/es), AI modules, billing, monitoring

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/shared/src/schema/pagination.ts

@@ -0,0 +1,15 @@
+import * as z from "zod";
+
+export const offsetPaginationSchema = z.object({
+  page: z.coerce.number().int().default(1),
+  perPage: z.coerce.number().int().default(10),
+});
+
+export type OffsetPaginationPayload = z.infer<typeof offsetPaginationSchema>;
+
+export const cursorPaginationSchema = z.object({
+  cursor: z.string().optional(),
+  limit: z.coerce.number().int().default(10),
+});
+
+export type CursorPaginationPayload = z.infer<typeof cursorPaginationSchema>;