nx_licdetect.nx

nx_licdetect.nx -- thin CLI over nx_licdetect_lib. WHICH LICENCE IS THIS FILE? The decision lives in the LIB so this command line and any in-process consumer prove the SAME code, and so the gate can IMPORT the logic instead of forking this binary -- a fork is a boundary the mutation harness cannot see across. Exit codes are the estate's shared refusal vocabulary so a caller branching on nx_licgate or nx_acquire branches identically here: 0 DETECTED exactly one licence matched -- the only answer 3 UNKNOWN nothing matched; the artifact does NOT advance to evidence=READ 4 AMBIGUOUS two or more matched; a coin flip is not a verdict 4 unreadable file license_tier: ORIGINAL