chore: bump version to 1.2.2+124 [ci skip]

Closes the gap between the functional redesign and the design handoff.
An audit found 126 deviations; this pass fixes the large majority and
records the rest as deliberate rejections with reasons.

- Bottom bar rebuilt as the prototype's balloon bar (tabs and icons kept)
- Surfaces are opaque #102532 by default; glass is now opt-in and used
  only on the chrome and the active card, per the prototype's own rule
- Global AppBar dropped; each root draws its own header
- Settings rows show their current value; 3-tier padding scale
- Equalizer, player, alarms, vacations, countries, search, recordings
  and welcome all brought to spec, each with a dimension/colour guard

Tests: 748 -> 903. Analyzer unchanged at 4 infos, 0 errors.

pubspec.yaml

@@ -1,7 +1,7 @@
 name: pluriwave
 description: "Radio mundial con ecualizador, reconocimiento de canciones y UI premium"
 publish_to: 'none'
-version: 1.2.0+122
+version: 1.2.2+124
 
 environment:
   sdk: ^3.7.0