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…pport - Handle NumPy structured/record arrays in _validate_x (e.g. from rpy2) - Fix xreg ALM initialization to match R's xregInitialiser: resolve distribution="default" to dlnorm for multiplicative models, and log-transform y when needed, producing correct log-scale coefficients - Fix xreg_model_initials[1] null-guard in initialization.py for multiplicative error models (two locations) - Fix np.dot shape mismatch by flattening initial_xreg before dot product Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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