global-error-handling

Implement consistent error handling using custom exceptions, exception codes, and NestJS exception filters. Use this skill when creating custom exception classes (*.exception.ts), defining exception codes in the @imkdw-dev/exception package, implementing exception filters, or handling errors in use cases and controllers. This includes extending CustomException base class, using HttpStatus from NestJS, defining feature-specific exception codes (EXCEPTION_CODES), and providing user-friendly error messages. Apply when working with files in features/{feature}/exception/, common/exception/, packages/shared/exception/, or when throwing/catching exceptions anywhere in the codebase.

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