`make ui-visual` had been red on main since #27, and nothing runs it,
so four references had drifted across three unrelated merges. Two were
refreshed with #186; these are the other two.
Each recorded two changes, not one. `app-sidebar` lost Jobs (#27,
shipped) and moved its highlight from Home to Tracks; `now-playing`
gained the source line (shipped) and was playing from "a dynamic mix".
Both are singleton stores read by a case that sets nothing, so the shot
photographs whatever the case above it left behind — blessing that
would have pinned the file's own ordering into a PNG. Both cases state
their world now, and only then are the references re-recorded.
The second half of the issue asks whether this tier should gate, and
the answer is measured rather than preferred: replayed in a bare
ubuntu:24.04 container — CI's `check` image — three of the ten
baselines fail on rendering alone (`track-info` and one `page-header`
shot at ratio 0.03 against a 0.02 allowance, `seek-bar` one pixel
shorter), and the two stale ones disagree about their new height
between the machines. So CI cannot run this suite without a second,
container-recorded baseline set that every local run would then fail
against, and a pre-push hook is the same fault with the machines
swapped. It stays local and opt-in; what replaces the gate is the rule
that a change moving a component's geometry refreshes that component's
baseline in the same commit, having read the image, and never one it
did not cause. Written where a person meets it: the skill's tier doc
has the table, SKILL.md has the obligation, CLAUDE.md has the
constraint.
Deleting the baselines was the third option and is declined: this tier
has caught one thing no other could, the `<span>` that lost the UA
stylesheet's `box-sizing` and grew a badge 36→38px.
Closes#196
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