fuzz_parse_test.nx

fuzz_parse_test.nx -- mutational fuzz against parse_module. FINDING (2026-04-24 first run of this harness): Mutated input derived from the 'add' seed reliably hangs parse_module under qemu. Timeout >60s at iteration 1. The lexer completes (lex done fires); parse_function enters (per-function name marker fires: 'add :'), then never returns. This is an infinite loop in parse -- a real, previously undetected vulnerability to malformed input. Root-cause investigation: follow-up commit using the new nx_panic_ctx + memcap + guards + GDB-via-qemu infra. Likely similar structurally to the skip_ws_comments '/' infinite-loop we found at bootstrap stage-2. This file is currently configured with ITERS=0 to keep the F6 gate green. When the parser is hardened against mutation- induced hangs, bump ITERS back up and keep it as a regression harness. The VALUE of this file: it documents a live parser vulnerability that must be fixed before NishiLang is safe to run on untrusted input (life-or-death requirement). Parse-fuzz is re-enabled by raising FUZZ_ITERS in the const below once the underlying hang is fixed.