By: Michael Lynch <git@mtlynch.io>
Make e2e-tests derivation deterministic Replace the installPhase block that copies Playwright run artifacts (traces, videos, reports) into $out with a simple result marker file. The copied artifacts vary between runs, causing `nix build .#e2e-tests --rebuild` to fail with a nondeterministic output error. Co-authored-by: Shelley <shelley@exe.dev>