Insert PantallaTutorialAyuda.mostrarSiProcede between the welcome
screen and the recurring what's-new dialog in
_mostrarFlujoPrimerLanzamiento, so the carousel shows once on every
install -- fresh AND existing installs upgrading to this version --
via its own independent one-time flag, without racing either
surface.
The prototype (t4) draws no global app bar anywhere: every root paints
a plain ~56px title row inside its own content instead (Alarmas line
325, Ajustes line 511, Explorar line 641). app.dart wrapped every tab
in PluriWaveScaffold(appBar: AppBar(title: Text(appTitle), ...)),
adding 56dp of chrome and a "PluriWave" title the prototype never
shows.
Add PluriRootHeader, a shared 56px title-row widget reused by all 5
roots. Extract app.dart's old _mostrarTimerDialog (only reachable from
the removed AppBar action) into a free function,
showPluriSleepTimerSheet, so every root's header can open the same
sheet directly and the sleep-timer feature stays reachable from every
tab with no behaviour change.
S1, Tier 1 visual-fidelity pass (audit id 2521).
FreeTLab