EstadoAlarmas, EstadoGrabacion and EstadoRadio defaulted `esPremium` to
`() => true`, so any construction site that forgot to wire entitlement
compiled fine and silently ran ungated — failing OPEN to premium and
disabling the paywall with no test able to catch it.
The parameter is now required with no default. Production wiring in
app.dart was already correct and is unchanged; the 184 pre-existing test
call sites now pass `() => true` explicitly, which is exactly the old
implicit default, so every assertion is untouched.
EstadoRadio has no gate of its own but constructs EstadoGrabacion, so it
inherits the same contract.
The one test that existed to pin the old default is renamed to describe
what it still covers (the premium path through iniciar() with no
duracion); its assertions are unchanged.
The prototype states an explicit system rule (t4 line 40): "opaque list
surface #102532, glass only in the chrome and in the active card."
PluriGlassSurface backs nearly every card/row in the app, but always
rendered translucent + blurred (glassSurface, blur 18) — the listSurface
token (#102532) existed since WU1 but was only ever used at reduced
alpha, never opaquely.
Add a `glass` flag to PluriGlassSurface, defaulting to false: an opaque
listSurface fill with no BackdropFilter. Chrome (MiniReproductor) and
the active/now-playing card (Escuchar's hero, when a station is
playing) opt into the old translucent look via `glass: true` — every
other of the ~26 call sites needs no change and now renders opaquely.
Also fix the card radius: the prototype's dominant card radius is 18
(t4 lines 512, 613, 715, 133); radiusMd was 22, a systematic +4px drift
across every card that defaults to it. Retune TarjetaEmisora's own
radius ternary so its compact (row) variant uses the dominant row
radius, 14, instead of inheriting the card radius.
S3+S4, Tier 1 visual-fidelity pass (audit id 2521).
FreeTLab