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feat: add exponential freshness decay boost to post-ranking - #781

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songproducer:improve/freshness-decay
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feat: add exponential freshness decay boost to post-ranking#781
songproducer wants to merge 1 commit into
yacy:masterfrom
songproducer:improve/freshness-decay

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Documents modified recently score higher using exp(-ageDays/365) decay — a page modified today gets +256 points, one modified a year ago gets +128, two years ago +64. Skipped when moddate is unavailable.

Documents modified recently score higher using exp(-ageDays/365)
decay — a page modified today gets +256 points, one modified a year
ago gets +128, two years ago +64. Skipped when moddate is unavailable.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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