A from-genesis sync of a patches-only build stopped at block 9,189,161, the
futureEipsTime activation, with a stateroot mismatch. Two causes, one patch:
upstream bases futureEips on the unreleased amsterdam definition while chain
2800 isolates it on Osaka, and the fleet activates EIP-2935 history storage in
the same fork, one system state write per block that a build without this
patch never performs. With 0005 applied the same node, same data directory,
crossed the activation and keeps importing. The fleet's optional Block-STM
wiring is deliberately omitted and the omission is stated in the patch header.
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