ruff check: PASS
py_compile: PASS
generated technology index check: PASS
git diff --check: PASS
SVG ElementTree parse: PASS
PNG dimensions/mode 2880x1620 RGB: PASS
diagram visual inspection: PASS
independent CGS oracle: PASS (10200 evaluations)
snapshot v1-v4 upgrade and v5 corruption checks: PASS
persistent worker restart and environment drift checks: PASS
terminal-set equality check: PASS ({10,20,30})
public/coverage/solver-speedup claim: intentionally absent