How to run dev node

[Vui-Chee]

@claude pls update readme to include example on how to run a dev node locally for testing.

Use the example below:

OTEL_EXPORTER_OTLP_PROTOCOL=http cargo r -p xlayer-reth-node node \
  --datadir .op-reth-ttt \
  --engine.legacy-state-root \
  --dev \
  --dev.block-time 1s \
  --builder.gaslimit 1500000000 \
  --txpool.pending-max-count 10000000 \
  --txpool.pending-max-size 10000 \
  --txpool.basefee-max-count 10000000 \
  --txpool.basefee-max-size 10000 \
  --txpool.queued-max-count 10000000 \
  --txpool.queued-max-size 10000 \
  --txpool.blobpool-max-count 10000000 \
  --txpool.blobpool-max-size 10000 \
  --txpool.max-account-slots 10000000 \
  --http \
  --http.api eth,debug,net,web3,txpool \
  --log.stdout.filter "info,engine::tree::payload_validator=debug"

[github-actions]

Claude finished @Vui-Chee's task in 45s —— View job • claude/issue-241-20260330-0251 • Create PR ➔

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Tasks

• Gather context and read README
• Add dev node example to README
• Commit and push changes

Added a new "Running a Dev Node" section to README.md between the Initialization and Configuration sections. It includes the full command example with a brief description of the key flags (--dev, --dev.block-time, --engine.legacy-state-root, --http, --datadir).