feat(install,store,ci): Phase 66 Phase 4d — v1→v2 silent migration + default flag flip#33

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phase66-4d-migration-and-flip

Commits on May 7, 2026

perf(install,store): Phase 66 #5+#6 — speculative pre-fetcher v2 routing + v1→v2 cache-hit translation

tolgaergin
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claude
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feat(install,store,ci): Phase 66 Phase 4d — v1→v2 silent migration + default flag flip

tolgaergin
and
claude
committed