C++ Reference Implementation

Workflow runs for C++ Reference Implementation

• Force-include <ostream> on MSVC for test build

  completed successfully:
  C++ Reference Implementation#3:Commitb186842pushedbyCodeReclaimers
  main

  Apr 26, 20261m 22s
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• Drive-by: update adapter test + remove dead vars (pre-existing CI bre…

  failed:
  C++ Reference Implementation#2:Commitf10132bpushedbyCodeReclaimers
  main

  Apr 26, 20261m 10s
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• Finish §13 reconciliation; document ON_CURVE status

  failed:
  C++ Reference Implementation#1:Commitc981cedpushedbyCodeReclaimers
  main

  Apr 26, 20261m 38s
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