P2 Stream E: FeatureComparisonScreen (replaces FeatureComparisonDialog)

Full-screen feature comparison matching iOS FeatureComparisonView.
Two-column table, iOS-equivalent row set, CTA to upgrade flow.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

composeApp/src/commonMain/kotlin/com/tt/honeyDue/App.kt

@@ -30,6 +30,7 @@ import com.tt.honeyDue.ui.screens.TasksScreen
 import com.tt.honeyDue.ui.screens.VerifyEmailScreen
 import com.tt.honeyDue.ui.screens.VerifyResetCodeScreen
 import com.tt.honeyDue.ui.screens.onboarding.OnboardingScreen
+import com.tt.honeyDue.ui.screens.subscription.FeatureComparisonScreen
 import com.tt.honeyDue.ui.screens.theme.ThemeSelectionScreen
 import com.tt.honeyDue.viewmodel.OnboardingViewModel
 import com.tt.honeyDue.viewmodel.PasswordResetViewModel
@@ -653,6 +654,17 @@ fun App(
                 )
             }
 
+            composable<FeatureComparisonRoute> {
+                // P2 Stream E — full-screen Free vs. Pro comparison.
+                FeatureComparisonScreen(
+                    onNavigateBack = { navController.popBackStack() },
+                    onNavigateToUpgrade = {
+                        navController.popBackStack()
+                        navController.navigate(UpgradeRoute)
+                    },
+                )
+            }
+
             composable<EditTaskRoute> { backStackEntry ->
                 val route = backStackEntry.toRoute<EditTaskRoute>()
                 EditTaskScreen(