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John Kearney
0f5efca3c9
The JSON backend writes "signed": 1 for any signed wire, including internal nets. The frontend only parsed the attribute for ports, so a write-read roundtrip silently cleared is_signed on internal nets. Signed internal wires became unsigned between the two passes. Fix: parse 'signed' in the netnames loop, next to the existing upto/offset handling. Regression test does a full roundtrip and checks the internal signed wire survives.