feat(quality): harden lint rules and add quality-gate tests

lib/tema/pluriwave_motion.dart

@@ -37,7 +37,10 @@ class PluriWaveMotion extends ThemeExtension<PluriWaveMotion> {
   }
 
   @override
-  ThemeExtension<PluriWaveMotion> lerp(covariant ThemeExtension<PluriWaveMotion>? other, double t) {
+  ThemeExtension<PluriWaveMotion> lerp(
+    covariant ThemeExtension<PluriWaveMotion>? other,
+    double t,
+  ) {
     if (other is! PluriWaveMotion) return this;
     return t < 0.5 ? this : other;
   }

lib/tema/pluriwave_theme.dart

@@ -22,11 +22,10 @@ abstract final class PluriWaveTheme {
       useMaterial3: true,
       colorScheme: colorScheme,
       scaffoldBackgroundColor: tokens.deepViolet,
-      textTheme: GoogleFonts.plusJakartaSansTextTheme(ThemeData.dark().textTheme),
-      extensions: const <ThemeExtension<dynamic>>[
-        tokens,
-        PluriWaveMotion.dark,
-      ],
+      textTheme: GoogleFonts.plusJakartaSansTextTheme(
+        ThemeData.dark().textTheme,
+      ),
+      extensions: const <ThemeExtension<dynamic>>[tokens, PluriWaveMotion.dark],
       appBarTheme: const AppBarTheme(
         centerTitle: false,
         backgroundColor: Colors.transparent,
@@ -39,7 +38,10 @@ abstract final class PluriWaveTheme {
         indicatorColor: tokens.electricMagenta.withValues(alpha: 0.18),
         labelTextStyle: WidgetStateProperty.resolveWith(
           (states) => TextStyle(
-            fontWeight: states.contains(WidgetState.selected) ? FontWeight.w800 : FontWeight.w600,
+            fontWeight:
+                states.contains(WidgetState.selected)
+                    ? FontWeight.w800
+                    : FontWeight.w600,
             fontSize: 12,
           ),
         ),
@@ -62,7 +64,9 @@ abstract final class PluriWaveTheme {
 }
 
 extension PluriWaveThemeContextX on BuildContext {
-  PluriWaveTokens get pluriTokens => Theme.of(this).extension<PluriWaveTokens>() ?? PluriWaveTokens.dark;
+  PluriWaveTokens get pluriTokens =>
+      Theme.of(this).extension<PluriWaveTokens>() ?? PluriWaveTokens.dark;
 
-  PluriWaveMotion get pluriMotion => Theme.of(this).extension<PluriWaveMotion>() ?? PluriWaveMotion.dark;
+  PluriWaveMotion get pluriMotion =>
+      Theme.of(this).extension<PluriWaveMotion>() ?? PluriWaveMotion.dark;
 }