feat: implement DB region (Data Blocks)

wanshenmean

2026-03-13 0500b9903e5b7fcdbdc5b3bd0cc9b373779d64d8

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{
  "RoadwayCommandMapping": {
    "HC": "Formation",
    "GW": "Standard",
    "CW": "Standard"
  },
  "DefaultCommandType": "Standard"
}