nx_tls13_ch_adversarial_test.nx

nx_tls13_ch_adversarial_test.nx -- Phase A2 of S-class hardening. Adversarial fuzzing of tls13_client_hello_parse, the parser exposed to every public-internet client when the substrate serves TLS. Top-priority hardening target for the nishifamily.com goal: a single malformed ClientHello byte stream from the wild internet must NOT crash, corrupt memory, or false-OK the server. What this smoke proves: parser returns structured verdict on every malformed input class. No buffer overruns, no infinite loops, no false-OK on a manifestly-broken ClientHello. Per the S-class honest audit (docs/NISHI_3D_PRINT_SCLASS_HONEST_AUDIT_2026_05_20.md): Phase A1 ✓ STL parser (commit prior) Phase A2 -- this smoke expect_exit: 0 license_tier: ORIGINAL