docs(delphi): add math-algorithm history & routing-regression reference#2612
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Adds delphi/docs/MATH_ALGORITHM_HISTORY.md — a git-archaeology reference of the core Polis math algorithms (comment routing, PCA/projection, extremity/repness, clustering, consensus/moderation): introductions, numeric-output-changing edits, and bugs, with verified commit hashes and dates. Includes the 2025 comment-routing regression (#1961, fixed in #2611), the pre-2018 uniform-random routing history, and how to map conversations to algorithm versions via the prod deploy timeline. Sourced entirely from public git history and code — no production data. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> commit-id:31321c47
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Adds delphi/docs/MATH_ALGORITHM_HISTORY.md — a git-archaeology reference of the
core Polis math algorithms (comment routing, PCA/projection, extremity/repness,
clustering, consensus/moderation): introductions, numeric-output-changing edits,
and bugs, with verified commit hashes and dates. Includes the 2025 comment-routing
regression (#1961, fixed in #2611), the pre-2018 uniform-random routing history,
and how to map conversations to algorithm versions via the prod deploy timeline.
Sourced entirely from public git history and code — no production data.
Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com
commit-id:31321c47
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