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models/__init__.py

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+"""
+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",
+]