Declarative MTP-Llama head stack + Gemma4 weight aggregation#528

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jlp_declarative_aggregator_converters

May 29, 2026

Commits on May 29, 2026

Make Gemma4 base-model weight aggregation declarative

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Make MTP-Llama prediction-head stack declarative via RepeatWeightConverter

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Gate optional Gemma4 transformers import in HF round-trip test

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Derive HF metadata allowlist from PretrainedConfig for version robustness

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Skip convert-group tests when transformers lacks the format's HF config class

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Trim static HF allowlist entries now covered by the dynamic PretrainedConfig union

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Drop consumer reference from RepeatWeightConverter docstring

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