Resolve paginated rollout lineages#34407
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copyberry[bot] merged 1 commit intoJul 20, 2026
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## What changed - Add a shared local thread-store resolver that follows `history_base` links into ordered, bounded rollout segments, including archived ancestors. - Support resolving a lineage at an explicit `HistoryPosition`. - Reject malformed lineages with cycles, missing or mismatched source rollouts, non-paginated sources, or invalid cutoff bounds. ## Testing - Add unit coverage for nested and archived lineages, explicit history positions, cycles, missing sources, and out-of-bounds offsets. GitOrigin-RevId: a9063ad87e81d9865bd17fc588ea5d8e9ac74c0a
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Resolve paginated rollout lineages
What changed
history_baselinks into ordered, bounded rollout segments, including archived ancestors.HistoryPosition.Testing