build LLVM 18 SymCC: PASS
build LLVM 17 SymCC: PASS
ruff check: PASS
py_compile: PASS
git diff --check: PASS
technology index: PASS
diagram render and structural inspection: PASS
15 RUN commands across 2 focused fixtures: PASS
real big-endian byte binding: PASS
non-byte integer fail-closed boundary: PASS