python-math #45: test(delphi): FLI-cold_start repful comparison → xfail (prod-blob Q12) + s7 Phase 4 journal - #2674
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This was referenced Jul 27, 2026
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python-math #43: docs(delphi): s7 goal state + journal — mode collapse executed, battery 20/20
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…il (prod-blob Q12) + s7 Phase 4 journal ## What Phase 4 of `GOAL_CUTOVER_READY.md` (the standing goal document for the Python math cutover): golden snapshots re-recorded at the collapse tree — the source tree after the mode collapse removed the engine-mode switch — following the verify-then-record protocol. Journal session 7 (continued) shows the drift is exactly the two expected legacy families, and the recording engine was oracle-certified 20/20 on the same datasets. ## Results - Comparer: 7/7 PASS. - `--include-local` suite (private datasets) green with ONE annotation: the FLI-cold_start repful comparison now xfails. The production blob for that dataset carries Clojure's unseeded cold-start PCA — quirk Q12 (#2661: the Clojure cold tick's PCA start vector is unseeded-random, so even two Clojure runs differ) — and the collapse made legacy kmeans the only cold-tick path, so the Python selections no longer intersect that random draw. The battery's pinned-cold-start FLI certification supersedes this comparison. - Battery: TWO consecutive 20/20 MATCH passes; the divergence ledger holds 81 entries, 0 open. commit-id:075d2f77
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What
Phase 4 of
GOAL_CUTOVER_READY.md(the standing goal document for the Python math cutover): golden snapshots re-recorded at the collapse tree — the source tree after the mode collapse removed the engine-mode switch — following the verify-then-record protocol. Journal session 7 (continued) shows the drift is exactly the two expected legacy families, and the recording engine was oracle-certified 20/20 on the same datasets.Results
--include-localsuite (private datasets) green with ONE annotation: the FLI-cold_start repful comparison now xfails. The production blob for that dataset carries Clojure's unseeded cold-start PCA — quirk Q12 (Clojure math: cold-tick PCA start is unseeded-random (Q12) — fixed by the Python math cutover #2661: the Clojure cold tick's PCA start vector is unseeded-random, so even two Clojure runs differ) — and the collapse made legacy kmeans the only cold-tick path, so the Python selections no longer intersect that random draw. The battery's pinned-cold-start FLI certification supersedes this comparison.commit-id:075d2f77
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