fix(inicio): add the favourites count badge and plain-text Ver todas

Tier 4 visual fidelity, audit 1.11/1.12 (t4 line 80): a pill badge next
to "Tus emisoras" now shows the TOTAL favorite count (not the 8-capped
grid size), and "Ver todas" is plain 12px/w800 brand-teal text instead
of a Material TextButton with its own padding and splash.

Item 1.4 (hero art radius) was already fixed as a side effect of an
earlier commit — no change needed here.

lib/pantallas/pantalla_inicio.dart

@@ -107,19 +107,46 @@ class _PantallaInicioState extends State<PantallaInicio> {
             Row(
               children: [
                 Expanded(
-                  child: Text(
-                    l10n.yourStationsTitle,
-                    style: theme.textTheme.titleMedium?.copyWith(
-                      fontWeight: FontWeight.w900,
-                    ),
+                  child: Row(
+                    children: [
+                      Flexible(
+                        child: Text(
+                          l10n.yourStationsTitle,
+                          style: theme.textTheme.titleMedium?.copyWith(
+                            fontWeight: FontWeight.w900,
+                          ),
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ),
+                      // Audit 1.11 (t4 line 80): a count badge next to the
+                      // section title — the TOTAL favorite count, not the
+                      // 8-capped grid size shown below it.
+                      if (favoritos.isNotEmpty) ...[
+                        const SizedBox(width: 10),
+                        _InsigniaRecuento(cuenta: favoritos.length),
+                      ],
+                    ],
                   ),
                 ),
-                TextButton(
-                  onPressed:
-                      () => context.read<EstadoNavegacionRaiz>().irA(
-                        RaizPluriWave.favoritos,
+                // Audit 1.12 (t4 line 80): "Ver todas" is plain 12px/w800
+                // brand-teal text — not a Material TextButton with its own
+                // padding and splash.
+                Semantics(
+                  button: true,
+                  child: GestureDetector(
+                    onTap:
+                        () => context.read<EstadoNavegacionRaiz>().irA(
+                          RaizPluriWave.favoritos,
+                        ),
+                    child: Text(
+                      l10n.seeAllAction,
+                      style: TextStyle(
+                        fontSize: 12,
+                        fontWeight: FontWeight.w800,
+                        color: context.pluriTokens.electricMagenta,
                       ),
-                  child: Text(l10n.seeAllAction),
+                    ),
+                  ),
                 ),
               ],
             ),
@@ -574,6 +601,35 @@ String? _metaEscuchar(Emisora emisora) {
   return partes.isEmpty ? null : partes.join(' · ');
 }
 
+/// Audit 1.11 (t4 line 80): the pill badge next to "Tus emisoras" showing
+/// the total favorite count — `rgba(255,255,255,.08)` fill, 11px/w800/60%.
+class _InsigniaRecuento extends StatelessWidget {
+  const _InsigniaRecuento({required this.cuenta});
+
+  final int cuenta;
+
+  @override
+  Widget build(BuildContext context) {
+    return DecoratedBox(
+      decoration: BoxDecoration(
+        color: Colors.white.withValues(alpha: 0.08),
+        borderRadius: BorderRadius.circular(999),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+        child: Text(
+          '$cuenta',
+          style: TextStyle(
+            fontSize: 11,
+            fontWeight: FontWeight.w800,
+            color: const Color(0xFFF2F7FA).withValues(alpha: 0.6),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
 /// Audit 1.10 (t4 lines 82-88): the "Tus emisoras" grid cell — a 44px
 /// square thumbnail (radius 11), name (13/w700/lh1.2) and genre
 /// (11/55%). Deliberately NOT `TarjetaEmisora(esCompacta: true)`: that