feat: Safely set last logged account public key using null safety

app/src/main/java/com/rosetta/messenger/ui/chats/ChatDetailScreen.kt

@@ -176,6 +176,8 @@ fun ChatDetailScreen(
     val keyboardController = LocalSoftwareKeyboardController.current
     val focusManager = LocalFocusManager.current
     val clipboardManager = androidx.compose.ui.platform.LocalClipboardManager.current
+    val context = LocalContext.current
+    val database = remember { com.rosetta.messenger.database.RosettaDatabase.getDatabase(context) }
     // Цвета как в React Native themes.ts
     val backgroundColor = if (isDarkTheme) Color(0xFF1E1E1E) else Color(0xFFFFFFFF)
     val textColor = if (isDarkTheme) Color.White else Color.Black
@@ -1103,7 +1105,22 @@ fun ChatDetailScreen(
                     TextButton(
                             onClick = {
                                 showDeleteConfirm = false
-                                // TODO: Implement delete chat
+                                scope.launch {
+                                    try {
+                                        // Delete all messages in this dialog
+                                        database.messageDao().deleteDialog(
+                                            account = currentUserPublicKey,
+                                            dialogKey = user.publicKey
+                                        )
+                                        // Delete dialog cache
+                                        database.dialogDao().deleteDialog(
+                                            account = currentUserPublicKey,
+                                            opponentKey = user.publicKey
+                                        )
+                                    } catch (e: Exception) {
+                                        android.util.Log.e("ChatDetail", "Error deleting chat", e)
+                                    }
+                                }
                                 onBack()
                             }
                     ) {
@@ -1140,7 +1157,21 @@ fun ChatDetailScreen(
                     TextButton(
                             onClick = {
                                 showBlockConfirm = false
-                                // TODO: Implement block user
+                                scope.launch {
+                                    try {
+                                        // Add user to blacklist
+                                        database.blacklistDao().blockUser(
+                                            com.rosetta.messenger.database.BlacklistEntity(
+                                                publicKey = user.publicKey,
+                                                account = currentUserPublicKey
+                                            )
+                                        )
+                                        android.util.Log.d("ChatDetail", "User blocked: ${user.publicKey.take(10)}")
+                                    } catch (e: Exception) {
+                                        android.util.Log.e("ChatDetail", "Error blocking user", e)
+                                    }
+                                }
+                                onBack()
                             }
                     ) {
                         Text("Block", color = Color(0xFFFF3B30))
@@ -1193,8 +1224,8 @@ private fun MessageBubble(
     onLongClick: () -> Unit = {},
     onClick: () -> Unit = {}
 ) {
-    // Telegram-style enter animation
-    val (alpha, translationY) = rememberMessageEnterAnimation(message.id)
+    // ❌ УБРАЛИ: Telegram-style enter animation - она мешает при скролле
+    // val (alpha, translationY) = rememberMessageEnterAnimation(message.id)
     
     // Selection animation
     val selectionScale by animateFloatAsState(
@@ -1242,8 +1273,9 @@ private fun MessageBubble(
                     Modifier.fillMaxWidth()
                             .padding(horizontal = 8.dp, vertical = 1.dp)
                             .graphicsLayer {
-                                this.alpha = alpha * selectionAlpha
-                                this.translationY = translationY
+                                // ❌ УБРАЛИ: alpha = alpha * selectionAlpha и translationY
+                                // Оставляем только selection анимацию
+                                this.alpha = selectionAlpha
                                 this.scaleX = selectionScale
                                 this.scaleY = selectionScale
                             },