style(android): streamline MainMenu UI by removing heavy GL shader backgrounds for a clean Material3 look

Author: github-actions[bot]

mobile/app/src/main/java/com/bytecats/metanoia/ui/screens/MainMenu.kt

@@ -26,16 +26,7 @@ import androidx.compose.runtime.getValue
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun MainMenu(navController: NavController, viewModel: MainViewModel) {
-    val time by produceState(initialValue = 0f) {
-        while (true) {
-            withInfiniteAnimationFrameMillis {
-                value = it / 1000f
-            }
-        }
-    }
-
     Scaffold(
-        modifier = Modifier.cyberpunkHudBackground(time),
         topBar = {
             CenterAlignedTopAppBar(
                 title = { 
@@ -90,27 +81,23 @@ fun MainMenu(navController: NavController, viewModel: MainViewModel) {
             // HIGH-FIDELITY CORE MODULE GRID
             Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
                 Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween) {
-                    ModuleCard("BIBLE", "Reader", Icons.AutoMirrored.Filled.MenuBook, Color(0xFF9ece6a), Modifier.weight(1f).cyberpunkGlowAura(time, Color(0xFF9ece6a).copy(alpha = 0.3f))) {
+                    ModuleCard("BIBLE", "Reader", Icons.AutoMirrored.Filled.MenuBook, Color(0xFF9ece6a), Modifier.weight(1f)) {
                         navController.navigate("bible")
                     }
-                    ModuleCard("COLLECTION", "Scholarship", Icons.Default.CollectionsBookmark, Color(0xFFbb9af7), Modifier.weight(1f).cyberpunkGlowAura(time, Color(0xFFbb9af7).copy(alpha = 0.3f))) {
+                    ModuleCard("COLLECTION", "Scholarship", Icons.Default.CollectionsBookmark, Color(0xFFbb9af7), Modifier.weight(1f)) {
                         navController.navigate("collection")
                     }
                 }
                 Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween) {
-                    ModuleCard("DATA", "Management", Icons.Default.Storage, Color(0xFFf7768e), Modifier.weight(1f).cyberpunkGlowAura(time, Color(0xFFf7768e).copy(alpha = 0.3f))) {
+                    ModuleCard("DATA", "Management", Icons.Default.Storage, Color(0xFFf7768e), Modifier.weight(1f)) {
                         navController.navigate("data_management")
                     }
-                    ModuleCard("LABS", "Research", Icons.Default.Science, Color(0xFFff9e6a), Modifier.weight(1f).cyberpunkGlowAura(time, Color(0xFFff9e6a).copy(alpha = 0.3f))) {
+                    ModuleCard("LABS", "Research", Icons.Default.Science, Color(0xFFff9e6a), Modifier.weight(1f)) {
                         navController.navigate("experimental_hub")
                     }
                 }
-                // Odd tile out -- half-width row (paired with an empty
-                // Spacer rather than stretching full-width) keeps the same
-                // card size/rhythm as the 2x2 grid above instead of looking
-                // like a broken layout.
                 Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween) {
-                    ModuleCard("MY READING", "Habits", Icons.Default.Insights, Color(0xFF9ece6a), Modifier.weight(1f).cyberpunkGlowAura(time, Color(0xFF9ece6a).copy(alpha = 0.3f))) {
+                    ModuleCard("MY READING", "Habits", Icons.Default.Insights, Color(0xFF9ece6a), Modifier.weight(1f)) {
                         navController.navigate("reading_stats")
                     }
                     Spacer(modifier = Modifier.weight(1f))