f689479227
5/5 sweep × 22 tests = 110/110 hard-pass post-recalibration (commits `04be38ad` + `029329af`). Marks `2026-05-07-tighten-cross-stack-assertions.md` and the roadmap's Priority 2 closed; documents the per-scenario floors that landed, including the one weaker-than-specced floor on the browser hot-swap (deferred follow-up). Priority 3 (CI gating) is now unblocked.