- Introduce ChainManipulatorEngine using fast incremental hashing path -
Throttle mining speed per solved block using sleeps after nonce batches
- Add CLI/env options to control base delay, batch size, throttle cap,
and resume state - Wire engine selection and parameters through
miner-service and miner-cli - Add debug logs for throttle state at job
start and on block found - Add new Grafana panel showing robust
difficulty median per chain for visibility
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