graph, store: reject grafts below the base subgraph's earliest_block#6617

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rslowinski wants to merge 3 commits into

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rslowinski:upstream-fix-graft-below-prune-floor

Commits on Jun 4, 2026

graph, store: validate graft block against base subgraph's earliest_block
rslowinski
committed
store: enforce graft prune-floor invariant in start_subgraph
rslowinski
committed
store: take the max of source and destination history_blocks during graft
rslowinski
committed