"""Upload-validation failures (ADR-0008). No HTTP knowledge here —
`src/api/errors.py` maps these to status codes.
"""


class FilesError(Exception):
    """Base class for file-upload failures."""


class InvalidUploadError(FilesError):
    """Missing domain, empty file, or content that doesn't match its
    declared extension. Maps to `400`.
    """


class FileTooLargeError(FilesError):
    """The upload exceeds `INGESTION_MAX_UPLOAD_SIZE_MB`. Maps to `413`."""