feat: Add paste functionality for seed phrase confirmation with success message

app/src/main/java/com/rosetta/messenger/ui/auth/ConfirmSeedPhraseScreen.kt

@@ -1,5 +1,7 @@
 package com.rosetta.messenger.ui.auth
 
+import android.content.ClipboardManager
+import android.content.Context
 import androidx.compose.animation.*
 import androidx.compose.animation.core.*
 import androidx.compose.foundation.*
@@ -16,6 +18,7 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.onFocusChanged
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
@@ -50,6 +53,7 @@ fun ConfirmSeedPhraseScreen(
     val backgroundColor = if (isDarkTheme) Color(0xFF1E1E1E) else Color(0xFFFFFFFF)
     val textColor = if (isDarkTheme) Color.White else Color.Black
     val secondaryTextColor = if (isDarkTheme) Color(0xFF8E8E93) else Color(0xFF666666)
+    val context = LocalContext.current
     
     // Select 4 words at fixed positions to confirm (2, 5, 9, 12)
     val wordsToConfirm = remember {
@@ -59,6 +63,56 @@ fun ConfirmSeedPhraseScreen(
     var userInputs by remember { mutableStateOf(List(12) { "" }) }
     var showError by remember { mutableStateOf(false) }
     var visible by remember { mutableStateOf(false) }
+    var showPasteSuccess by remember { mutableStateOf(false) }
+    
+    // Function to handle paste from clipboard
+    val handlePaste: () -> Unit = {
+        try {
+            val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+            val clipData = clipboard.primaryClip
+            if (clipData != null && clipData.itemCount > 0) {
+                val pastedText = clipData.getItemAt(0).text?.toString() ?: ""
+                
+                // Split by spaces, commas, or newlines and filter empty strings
+                val pastedWords = pastedText
+                    .split(Regex("\\s+|,|\\n"))
+                    .map { it.trim().lowercase() }
+                    .filter { it.isNotEmpty() }
+                
+                if (pastedWords.size >= 12) {
+                    // Fill all 12 words
+                    userInputs = pastedWords.take(12)
+                    showPasteSuccess = true
+                    showError = false
+                } else if (pastedWords.isNotEmpty()) {
+                    // Fill only the required input fields with available words
+                    val newInputs = userInputs.toMutableList()
+                    var pasteIndex = 0
+                    
+                    wordsToConfirm.forEach { (index, _) ->
+                        if (pasteIndex < pastedWords.size) {
+                            newInputs[index] = pastedWords[pasteIndex]
+                            pasteIndex++
+                        }
+                    }
+                    
+                    userInputs = newInputs
+                    showPasteSuccess = pasteIndex > 0
+                    showError = false
+                }
+            }
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+    }
+    
+    // Hide success message after delay
+    LaunchedEffect(showPasteSuccess) {
+        if (showPasteSuccess) {
+            kotlinx.coroutines.delay(2000)
+            showPasteSuccess = false
+        }
+    }
     
     LaunchedEffect(Unit) {
         visible = true
@@ -86,11 +140,30 @@ fun ConfirmSeedPhraseScreen(
                 modifier = Modifier
                     .fillMaxWidth()
                     .padding(4.dp),
-                verticalAlignment = Alignment.CenterVertically
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.SpaceBetween
             ) {
                 IconButton(onClick = onBack) {
                     Icon(Icons.Default.ArrowBack, "Back", tint = textColor)
                 }
+                
+                // Paste button
+                OutlinedButton(
+                    onClick = handlePaste,
+                    modifier = Modifier.height(40.dp),
+                    colors = ButtonDefaults.outlinedButtonColors(
+                        contentColor = PrimaryBlue
+                    ),
+                    border = BorderStroke(1.dp, PrimaryBlue)
+                ) {
+                    Icon(
+                        Icons.Default.ContentPaste,
+                        contentDescription = "Paste",
+                        modifier = Modifier.size(18.dp)
+                    )
+                    Spacer(modifier = Modifier.width(6.dp))
+                    Text("Paste", fontSize = 14.sp)
+                }
             }
             
             Column(
@@ -136,6 +209,42 @@ fun ConfirmSeedPhraseScreen(
                     )
                 }
                 
+                // Paste success message
+                AnimatedVisibility(
+                    visible = showPasteSuccess,
+                    enter = fadeIn(tween(300)) + scaleIn(initialScale = 0.9f),
+                    exit = fadeOut(tween(300))
+                ) {
+                    Column {
+                        Spacer(modifier = Modifier.height(12.dp))
+                        Card(
+                            colors = CardDefaults.cardColors(
+                                containerColor = Color(0xFF4CAF50).copy(alpha = 0.15f)
+                            ),
+                            shape = RoundedCornerShape(8.dp)
+                        ) {
+                            Row(
+                                modifier = Modifier.padding(12.dp),
+                                verticalAlignment = Alignment.CenterVertically
+                            ) {
+                                Icon(
+                                    Icons.Default.CheckCircle,
+                                    contentDescription = null,
+                                    tint = Color(0xFF4CAF50),
+                                    modifier = Modifier.size(20.dp)
+                                )
+                                Spacer(modifier = Modifier.width(8.dp))
+                                Text(
+                                    text = "Words pasted successfully!",
+                                    fontSize = 14.sp,
+                                    color = Color(0xFF4CAF50),
+                                    fontWeight = FontWeight.Medium
+                                )
+                            }
+                        }
+                    }
+                }
+                
                 Spacer(modifier = Modifier.height(32.dp))
                 
                 // Two column layout like SeedPhraseScreen