backend

Instruction file imported from AkashSisaudiya/TravelWiseAI (.github/instructions/backend.instructions.md). Copyright stays with the author.

Backend — C# Conventions

• New feature scaffold order: Domain entity → Application interface + DTO + handler + validator → Infrastructure impl → API controller
• Commands in Application/{Feature}/Commands/, Queries in Application/{Feature}/Queries/
• Handler returns ErrorOr<T> — success via Result.Success(value), failure via Error.Failure(...)
• Validator class in same folder as its command/query, auto-registered via DI assembly scan
• Repository interface in Application/Interfaces/, implementation in Infrastructure/Repositories/
• Controller actions: one line — dispatch to MediatR, map result to HTTP response
• Use ICurrentUserService to access authenticated user — never read claims directly in handlers
• Extension methods for DI registration: one AddApplicationServices() per project
• CancellationToken parameter on every handler and repository method