feat(tokens): add design tokens, type scale, push scaffold, and root nav state

lib/l10n/app_en.arb

@@ -1,7 +1,7 @@
 {
   "@@locale": "en",
   "appTitle": "PluriWave",
-  "navHome": "Home",
+  "navHome": "Listen",
   "navSearch": "Search",
   "navFavorites": "Favorites",
   "navAlarms": "Alarms",

lib/l10n/app_es.arb

@@ -1,7 +1,7 @@
 {
   "@@locale": "es",
   "appTitle": "PluriWave",
-  "navHome": "Inicio",
+  "navHome": "Escuchar",
   "navSearch": "Buscar",
   "navFavorites": "Favoritos",
   "navAlarms": "Alarmas",

lib/l10n/gen/app_localizations.dart

@@ -129,7 +129,7 @@ abstract class AppLocalizations {
   /// No description provided for @navHome.
   ///
   /// In es, this message translates to:
-  /// **'Inicio'**
+  /// **'Escuchar'**
   String get navHome;
 
   /// No description provided for @navSearch.

lib/l10n/gen/app_localizations_en.dart

@@ -12,7 +12,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String get appTitle => 'PluriWave';
 
   @override
-  String get navHome => 'Home';
+  String get navHome => 'Listen';
 
   @override
   String get navSearch => 'Search';

lib/l10n/gen/app_localizations_es.dart

@@ -12,7 +12,7 @@ class AppLocalizationsEs extends AppLocalizations {
   String get appTitle => 'PluriWave';
 
   @override
-  String get navHome => 'Inicio';
+  String get navHome => 'Escuchar';
 
   @override
   String get navSearch => 'Buscar';