feat(backup): add back button to restore screens (R24-d)

app/src/main/java/app/closer/core/navigation/AppNavigation.kt

@@ -401,11 +401,12 @@ fun AppNavigation(
                         navController.navigate(AppRoute.HOME) {
                             popUpTo(AppRoute.RESTORE_REQUEST) { inclusive = true }
                         }
-                    }
+                    },
+                    onBack = navigateBackOrHome
                 )
             }
             composable(route = AppRoute.RESTORE_CONSENT) {
-                RestoreConsentScreen(onDone = { navController.popBackStack() })
+                RestoreConsentScreen(onDone = { navController.popBackStack() }, onBack = navigateBackOrHome)
             }
 
             // Wheel / Category Selection

app/src/main/java/app/closer/ui/pairing/RestoreScreens.kt

@@ -11,6 +11,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.safeDrawingPadding
 import androidx.compose.foundation.layout.width
@@ -22,6 +23,8 @@ import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.Checkbox
 import androidx.compose.material3.CheckboxDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.OutlinedTextFieldDefaults
@@ -59,6 +62,7 @@ import app.closer.ui.settings.SettingsPrimaryDeep
 @Composable
 fun RestoreRequestScreen(
     onDone: () -> Unit,
+    onBack: () -> Unit = {},
     viewModel: RestoreViewModel = hiltViewModel()
 ) {
     val state by viewModel.uiState.collectAsState()
@@ -66,7 +70,7 @@ fun RestoreRequestScreen(
     LaunchedEffect(state.restoreComplete) { if (state.restoreComplete) onDone() }
     LaunchedEffect(state.error) { state.error?.let { snackbar.showSnackbar(it); viewModel.dismissError() } }
 
-    RestoreScaffold(snackbar, icon = CloserGlyphs.Couple, title = "Restore from your partner") {
+    RestoreScaffold(snackbar, icon = CloserGlyphs.Couple, title = "Restore from your partner", onBack = onBack) {
         val code = state.verificationCode
         if (code == null) {
             Text(
@@ -97,6 +101,7 @@ fun RestoreRequestScreen(
 @Composable
 fun RestoreConsentScreen(
     onDone: () -> Unit,
+    onBack: () -> Unit = {},
     viewModel: RestoreViewModel = hiltViewModel()
 ) {
     val state by viewModel.uiState.collectAsState()
@@ -105,7 +110,7 @@ fun RestoreConsentScreen(
     LaunchedEffect(state.consentComplete) { if (state.consentComplete) onDone() }
     LaunchedEffect(state.error) { state.error?.let { snackbar.showSnackbar(it); viewModel.dismissError() } }
 
-    RestoreScaffold(snackbar, icon = CloserGlyphs.Lock, title = "Help your partner restore") {
+    RestoreScaffold(snackbar, icon = CloserGlyphs.Lock, title = "Help your partner restore", onBack = onBack) {
         when {
             // Wait for the first observation before deciding what to show (avoids flashing "no request").
             !state.consentChecked -> {
@@ -222,6 +227,7 @@ private fun RestoreScaffold(
     snackbar: SnackbarHostState,
     icon: androidx.compose.ui.graphics.vector.ImageVector,
     title: String,
+    onBack: (() -> Unit)? = null,
     content: @Composable () -> Unit
 ) {
     Scaffold(
@@ -240,7 +246,15 @@ private fun RestoreScaffold(
             horizontalAlignment = Alignment.CenterHorizontally,
             verticalArrangement = Arrangement.Top
         ) {
-            Spacer(Modifier.height(48.dp))
+            // Back affordance — important when reached from Settings → "Help my partner restore".
+            Row(modifier = Modifier.fillMaxWidth().height(48.dp), verticalAlignment = Alignment.CenterVertically) {
+                if (onBack != null) {
+                    IconButton(onClick = onBack, modifier = Modifier.offset(x = (-12).dp)) {
+                        Icon(CloserGlyphs.Back, contentDescription = "Back", tint = SettingsInk)
+                    }
+                }
+            }
+            Spacer(Modifier.height(8.dp))
             StatusGlyph(icon = icon, tint = SettingsPrimaryDeep, container = SettingsPrimary.copy(alpha = 0.12f))
             Spacer(Modifier.height(20.dp))
             Text(title, style = MaterialTheme.typography.headlineSmall, color = SettingsInk,