core/exceptions.py

class BabelSlideException(Exception):
    """Base exception for BabelSlide application"""
    pass

class TranslationError(BabelSlideException):
    """Raised when translation fails"""
    pass

class ProcessorError(BabelSlideException):
    """Raised when document processing fails"""
    pass

class ValidationError(BabelSlideException):
    """Raised when input validation fails"""
    pass

class APIKeyError(BabelSlideException):
    """Raised when API key is invalid or missing"""
    pass

class UnsupportedFileError(BabelSlideException):
    """Raised when file format is not supported"""
    pass

class FileSizeError(BabelSlideException):
    """Raised when file is too large"""
    pass