[anneal] Audit cached Lean artifacts against clean builds - #3486
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## Gcz4iteion3frenivdjpngxluv7c3bshf #3486 +/- ##
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Split the Nix pipeline at a shared, path-rewritten source tree. Keep the default fast path cache-seeded with one trace traversal, and add a seed-free Lean build whose packaged output passes through the same pruning and archive finalizers. Compare complete source, toolchain, and Lake build payloads, including raw ILean reference usages, hash sidecars, and stable trace dependency/output hashes. Regenerate the two stale candidate ILean files exposed by that audit, install both archives independently, and compare the complete normalized InfoView setup contract in isolated environments. Run the clean reference build and equivalence checks in a standalone nightly workflow on main so ordinary push and pull-request jobs retain the fast path. gherrit-pr-id: Gri3qjmi3mkxqhujr7xw3insogx5mpcm4
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Split the Nix pipeline at a shared, path-rewritten source tree. Keep the default fast path cache-seeded with one trace traversal, and add a seed-free Lean build whose packaged output passes through the same pruning and archive finalizers.
Compare complete source, toolchain, and Lake build payloads, including raw ILean reference usages, hash sidecars, and stable trace dependency/output hashes. Regenerate the two stale candidate ILean files exposed by that audit, install both archives independently, and compare the complete normalized InfoView setup contract in isolated environments.
Run the clean reference build and equivalence checks in a standalone nightly workflow on main so ordinary push and pull-request jobs retain the fast path.
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git fetch origin refs/heads/Gri3qjmi3mkxqhujr7xw3insogx5mpcm4 && git checkout -b pr-Gri3qjmi3mkxqhujr7xw3insogx5mpcm4 FETCH_HEADCheckout
git fetch origin refs/heads/Gri3qjmi3mkxqhujr7xw3insogx5mpcm4 && git checkout FETCH_HEADCherry Pick
git fetch origin refs/heads/Gri3qjmi3mkxqhujr7xw3insogx5mpcm4 && git cherry-pick FETCH_HEADPull
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