Tom Boucher 07ec1b91d5 test(#1730): golden-parity install harness for all 16 runtimes (#1732) ...

ADR-1239 Phase B (parent #1679). Safety net for the upcoming engine deep-move:
captures the COMPLETE emitted install output of all 16 runtimes as a golden
baseline so the move PR can prove byte-identical parity.

tests/golden-install-parity.test.cjs spawns the real installer per runtime into
a temp HOME, normalizes the temp path to <HOME>, excludes the two volatile
metadata files (gsd-file-manifest.json, gsd-install-state.json — the only
run-to-run variance after normalization, empirically), SHA-256s every remaining
file, and asserts the manifest matches tests/fixtures/golden-install-parity/<rt>.json
(8,957 hashes total). UPDATE_GOLDEN=1 regenerates; mismatches list
added/removed/changed paths. Non-vacuous (corrupting a hash fails the run).

Closes #1730

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-25 19:00:32 -04:00

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