Align task API and add FunCaptcha support

models/__init__.py

@@ -8,6 +8,7 @@
 - RegressionCNN: 回归 CNN (3D 旋转 + 滑块, ~1MB)
 - GapDetectorCNN: 滑块缺口检测 CNN (~1MB)
 - RotationRegressor: 旋转角度回归 sin/cos 编码 (~2MB)
+- FunCaptchaSiamese: FunCaptcha 专项 Siamese 匹配模型
 """
 
 from models.classifier import CaptchaClassifier
@@ -16,6 +17,7 @@ from models.threed_cnn import ThreeDCNN
 from models.regression_cnn import RegressionCNN
 from models.gap_detector import GapDetectorCNN
 from models.rotation_regressor import RotationRegressor
+from models.fun_captcha_siamese import FunCaptchaSiamese
 
 __all__ = [
     "CaptchaClassifier",
@@ -24,4 +26,5 @@ __all__ = [
     "RegressionCNN",
     "GapDetectorCNN",
     "RotationRegressor",
+    "FunCaptchaSiamese",
 ]