feat: implement payment service with error handling and validation

Add new payment service with repository, error handling, and validation
Add exceptions package with database and validation utilities
Update database package with new schema and zod types
Add turbo start script for development

packages/database/src/client.ts

@@ -16,3 +16,7 @@ export const prisma = new PrismaClientBase().$extends({
 });
 
 export type PrismaClient = typeof prisma;
+
+export type PrismaClientArg =
+  | Parameters<Parameters<PrismaClient['$transaction']>[0]>[0]
+  | PrismaClient;

packages/database/src/index.ts

@@ -1,2 +1,7 @@
-export { prisma } from "./client"; // exports instance of prisma
-export * from "../generated/prisma"; // exports generated types from prisma
+export { prisma, type PrismaClientArg, type PrismaClient } from './client';
+export * from '../generated/prisma';
+export {
+  PaymentSchema,
+  TelegramUserSchema,
+  TelegramSessionSchema,
+} from '../generated/zod';