nx_gate_bite_gate.nx

nx_gate_bite_gate.nx -- THE GATE FOR THE MUTATION HARNESS ITSELF (2026-08-25). SUBJECT: the nx_gate_bite ELF, forked for real against a fixture .nx written into a fresh run directory (/tmp/nx_gate_bite_gate/r<usec>/), so this gate is idempotent by construction and nothing it measures was inherited from an earlier run. Substitutable: argv[1] overrides the subject path -- which is exactly the addressing nx_gate_bite's own `subject <target>` mode requires of the gates it bites, so this gate can be bitten by the very capability it proves. WHY THESE TEETH. nx_gate_bite gained a `subject <subject_target>` argument on 2026-08-25 because without it the harness ALWAYS rebuilt the GATE and never the SUBJECT. For the 152 end-to-end gates in the estate that meant every mutant returned NOT-REACHED, and a bite of the gate's own source returned a clean verdict=GREEN that reads exactly like a subject proof and is not one. MEASURED before the fix on nx_communitypulse_gate: 10 mutants, 10 NOT-REACHED, valid_mutants=0. After: valid_mutants=1, killed=1. So this gate holds the NEW grammar to its documented shape and holds the OLD grammar unchanged. EVERY INVOCATION HERE IS BUILD-FREE ON PURPOSE. `aimlist` mutates nothing and builds nothing, and both refusals fire before the baseline build, so this gate runs in milliseconds and can sit on the roster: A GATE THAT OUTLIVES EVERY CALLER'S TIMEOUT IS INDISTINGUISHABLE FROM A GATE THAT EMITS NOTHING. The gate target passed below DELIBERATELY DOES NOT EXIST -- if any of these paths ever started building, this gate would fail loudly here instead of silently costing the roster minutes. license_tier: ORIGINAL