Audit S7 plus the open items on screens 1-3. Escuchar gains the
prototype's own 52px "now listening" eyebrow header (t4:53), which is
structurally different from the 56px title row every other root uses
(t4:325) -- the earlier wiring test asserted PluriRootHeader on all five
roots, an over-broad premise now corrected to guard what actually holds:
no AppBar, and the sleep-timer action still reachable.
The prototype's eyebrows are always rgba(242,247,250,.42) (t4 lines
254, 299, 381, 450, 511, 660). eyebrowLabel set size/weight/letter-
spacing only, no colour, so every call site (settings group headers,
vacation section titles, the ringing screen's snooze label) rendered
at whatever full-opacity default the ambient text theme resolved to.
One factory-level change fixes every current and future consumer of
PluriWaveTypography.eyebrowLabel — no call site needs editing.
S9, Tier 1 visual-fidelity pass (audit id 2521).
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