proposal-system/api/src/ProposalSystem.Application/DTOs/FileDtos.cs

namespace ProposalSystem.Application.DTOs;

public record PresignedUploadResponse(
    string UploadUrl,
    string S3Key,
    DateTime ExpiresAt
);

public record PdfDownloadResponse(
    string DownloadUrl,
    DateTime ExpiresAt
);
Implement Backend API Core (Phase 1) Complete API layer with Clean Architecture: - Application DTOs (proposals, line items, customers, users, files, audit, dashboard) - Service interfaces (IProposalService, ILineItemService, ICustomerService, IAuditService, IS3Service, IJobPublisher) - FluentValidation validators for all create requests - Infrastructure service implementations (ProposalService, LineItemService, CustomerService, AuditService, S3Service, SqsJobPublisher, ProposalNumberGenerator) - Secrets Manager connection string resolver for RDS - API controllers: Proposals (CRUD + approve/send/revise), LineItems (CRUD + bulk), Customers, Users, Files (presigned upload/download), Admin (dashboard) - Middleware: GlobalExceptionHandler (ProblemDetails), ValidationFilter (FluentValidation pipeline) - CurrentUserService (Cognito JWT claims -> User entity, auto-provisioning) - Full DI configuration in Program.cs with Lambda hosting - Role-based authorization (dispatchers, admins, sysadmins) - CORS configured for proposals.seahaven.com + localhost 2026-05-16 18:49:48 -04:00			`namespace ProposalSystem.Application.DTOs;`

			`public record PresignedUploadResponse(`
			`string UploadUrl,`
			`string S3Key,`
			`DateTime ExpiresAt`
			`);`

			`public record PdfDownloadResponse(`
			`string DownloadUrl,`
			`DateTime ExpiresAt`
			`);`