Summary by CodeRabbit

• New Features

  • CLI accepts multiple --input-model entries; new model-loading API and public error type for input-model processing.

• Refactor

  • Parser config types unified under a shared ParserConfig; Config.input_model now normalized to a list.

• Bug Fixes

  • Improved input-model validation and error mapping during loading; better import/type resolution for model inputs.

• Tests

  • Many new and updated tests plus regenerated expected outputs covering multi-model inheritance, callable/collection types, ref strategies, and error paths.

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