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      "G92 resets absolute extrusion baseline without false segment",
      "XY debt recovery fails closed",
      "partial E-only recovery retains debt",
      "unsupported G20",
      "unsupported G91",
      "unsupported M83",
      "unsupported G2",
      "unsupported T1",
      "unsupported M200",
      "missing units rejected",
      "G28 invalidates homed axis",
      "travel reestablishes homed axis before extrusion",
      "Z annotation mismatch rejected",
      "coordinate reset rejected",
      "unknown feature rejected",
      "duplicate parameter rejected",
      "oversized line rejected",
      "source hash mismatch rejected",
      "byte bound rejected"
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