"""
模型定义包

提供三种模型：
- CaptchaClassifier: 调度分类器 (轻量 CNN, < 500KB)
- LiteCRNN: 轻量 CRNN (普通字符 + 算式, < 2MB)
- ThreeDCNN: 3D 验证码专用模型 (ResNet-lite + BiLSTM, < 5MB)
"""

from models.classifier import CaptchaClassifier
from models.lite_crnn import LiteCRNN
from models.threed_cnn import ThreeDCNN

__all__ = [
    "CaptchaClassifier",
    "LiteCRNN",
    "ThreeDCNN",
]