fix: navigate to send confirmation broken when already on idle send screen

app/src/main/java/com/bitcointxoko/gudariwallet/ui/WalletScreen.kt

@@ -223,7 +223,14 @@ fun WalletScreen(
                                 contentAlignment = Alignment.Center
                             ) {
                                 FilledIconButton(
-                                    onClick  = { navController.navigate(ROUTE_SCANNER) },
+                                    onClick = {
+                                        navController.navigate(ROUTE_SCANNER) {
+                                            popUpTo(TabItem.Send.route) {
+                                                saveState = true
+                                                inclusive = false
+                                            }
+                                        }
+                                    },
                                     modifier = Modifier.size(52.dp),
                                     shape    = CircleShape
                                 ) {
@@ -310,10 +317,17 @@ fun WalletScreen(
                 composable(ROUTE_SCANNER) {
                     QrScannerScreen(
                         onScanned = { scanned ->
-                            navController.popBackStack()
                             vm.scan(scanned)
-                            navController.navigate(TabItem.Send.route) {
-                                launchSingleTop = true
+                            val wentBack = navController.popBackStack(TabItem.Send.route, inclusive = false)
+                            if (!wentBack) {
+                                // Scan was triggered from a non-Send tab — navigate to Send
+                                navController.navigate(TabItem.Send.route) {
+                                    popUpTo(navController.graph.findStartDestination().id) {
+                                        saveState = true
+                                    }
+                                    launchSingleTop = true
+                                    restoreState    = false   // don't restore old Idle state; VM already has new state
+                                }
                             }
                         },
                         onDismiss = { navController.popBackStack() }

app/src/main/java/com/bitcointxoko/gudariwallet/ui/send/SendViewModel.kt

@@ -345,8 +345,8 @@ class SendViewModel(
     }
 
     private fun handleBolt11Scan(normalized: String) {
+        _sendState.value = SendState.Scanning
         viewModelScope.launch {
-            _sendState.value = SendState.Scanning
             runCatching { repo.decodeBolt11(normalized) }
                 .onSuccess { decoded ->
                     val routeRisk = RouteHintAnalyzer.analyze(
@@ -389,9 +389,8 @@ class SendViewModel(
     }
 
     private fun handleLnurlScan(normalized: String) {
+        _sendState.value = SendState.Scanning
         viewModelScope.launch {
-            _sendState.value = SendState.Scanning
-
             // 1. Cache hit
             val cached = lnurlCache.get(normalized)
             if (cached != null) {