android: show selection check badge on chat avatars

android/CHANGELOG.md

@@ -603,3 +603,9 @@
 ### Step 94 - Pinned-only drag markers in selection mode
 - Updated chats multi-select row UI: drag markers are now shown only for pinned chats.
 - Non-pinned chats no longer render reorder marker in selection mode.
+
+### Step 95 - Selection badge on avatar (Telegram-like)
+- Added explicit selection indicator directly on chat avatars in multi-select mode:
+  - selected chat -> colored circle with check icon,
+  - unselected chat -> empty outlined circle.
+- This matches the reference behavior and makes selected rows easier to scan.

android/app/src/main/java/ru/daemonlord/messenger/ui/chats/ChatListScreen.kt

@@ -5,6 +5,7 @@ import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.background
+import androidx.compose.foundation.border
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -55,6 +56,7 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
@@ -63,6 +65,7 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.DoneAll
 import androidx.compose.material.icons.filled.Inventory2
@@ -1151,26 +1154,36 @@ private fun ChatRow(
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.spacedBy(12.dp),
         ) {
-            if (!chat.avatarUrl.isNullOrBlank()) {
-                AsyncImage(
-                    model = chat.avatarUrl,
-                    contentDescription = "Avatar for ${chat.displayTitle}",
-                    modifier = Modifier
-                        .size(52.dp)
-                        .clip(CircleShape),
+            Box {
+                ChatAvatar(
+                    chat = chat,
+                    size = 52.dp,
                 )
-            } else {
-                Box(
-                    modifier = Modifier
-                        .size(52.dp)
-                        .clip(CircleShape)
-                        .background(MaterialTheme.colorScheme.surfaceVariant),
-                    contentAlignment = Alignment.Center,
-                ) {
-                    Text(
-                        text = chat.displayTitle.firstOrNull()?.uppercase() ?: "?",
-                        style = MaterialTheme.typography.titleMedium,
-                    )
+                if (isSelecting) {
+                    Box(
+                        modifier = Modifier
+                            .align(Alignment.BottomStart)
+                            .size(18.dp)
+                            .clip(CircleShape)
+                            .border(
+                                width = 1.dp,
+                                color = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.22f),
+                                shape = CircleShape,
+                            )
+                            .background(
+                                if (isSelected) MaterialTheme.colorScheme.tertiary else MaterialTheme.colorScheme.surface,
+                            ),
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        if (isSelected) {
+                            Icon(
+                                imageVector = Icons.Filled.Check,
+                                contentDescription = "Selected",
+                                tint = Color.White,
+                                modifier = Modifier.size(12.dp),
+                            )
+                        }
+                    }
                 }
             }
             Column(modifier = Modifier.weight(1f)) {