Support `PositiveIndexKernel` and dispatching via `TaskParameter`#728

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kalama-ai wants to merge 7 commits intomainfrom

feat/support-positive-index-kernel

Commits on Jan 16, 2026

Add transfer learning mode to TaskParameter
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Raise errro if PositiveIndexKernel is used with multiple sctive_values
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Implement new searchspace properties rewuired for transfer learining with PositiveIndexKernel
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Implement dispatchign between IndexKernel and PositiveIndexKernel in GaussianProcessSurrogate
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Add PositiveIndexKernel baseline to benchmarks
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Renaming transfer mode to task correlation for easier interpretation
kalama-ai
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Improve comments in benchmarks
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