Fix red develop bbedc19f38ff

The merge lane found `develop` red at `bbedc19f38ff75f6515197c926c4f78bb231427f` on its own: no queued PR merges until it is fixed. Failing (tests and gate stages): - `frontend-smoke-playwright-load-isolated` - … and 1 more: read them in the gate log, as untrusted output The whole gate log: artifact `7389` on lane task 8352. Make `develop` pass its full gate again. Open a PR as usual: the merge lane merges a PR that fixes some of these and adds no failure even while `develop` is red.

Fixed red develop: the 448px wrapped-trail test (task-detail-fit.spec.ts:646) misread the taller System-chip crumb's 2px offset as a line break. It now uses the component's own bottom-based rule. Test-only change. Failed 5/5 before, passes 3/3 after, quick gate green, visual check OK. PR #6424 queued. Memory: none applied.