Measured 2026-08-11: a clean isolated pass took 295.7s against the 300s
inner budget (4s of margin) and the same test timed out at ~308s three
times under concurrent eval load — a budget-edge flake in the gate lane,
not a behavior regression (it passed isolated on both this branch and
main). Inner budget 300s -> 420s, outer bun timeout 360s -> 480s, and the
test file is now named in its own touchfiles dep list so the tier-alignment
invariant binds for it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
