"""
Pipeline package — local processing stages that run BEFORE the
orchestrator fans out to providers.

Flow:
    raw user input (bytes / URL / base64)
        ↓
    validation.py        — InputValidator   (reject bad input)
        ↓
    preprocessing.py     — ImagePreprocessor (decode, resize, normalize)
        ↓
    hashing.py           — ImageHasher       (SHA-256 cache key)
        ↓
    feature_extraction.py — FeatureExtractor (face crops, default-detector boxes)
        ↓
    PipelineOutput       (consumed by orchestrator)

The orchestrator receives a PipelineOutput, never raw user input.
"""

from pipeline.validation import InputValidator, ValidationResult
from pipeline.preprocessing import ImagePreprocessor, PreprocessedImage
from pipeline.hashing import ImageHasher
from pipeline.feature_extraction import FeatureExtractor, PipelineOutput
from pipeline.postprocessing import ResultPostprocessor

__all__ = [
    "InputValidator",
    "ValidationResult",
    "ImagePreprocessor",
    "PreprocessedImage",
    "ImageHasher",
    "FeatureExtractor",
    "PipelineOutput",
    "ResultPostprocessor",
]