Add avatars to chat list

app/shared/src/commonMain/kotlin/ru/fromchat/api/ProfileCache.kt

@@ -42,6 +42,35 @@ object ProfileCache {
      * Fills or refreshes a lightweight profile from a public chat [Message] (username, avatar URL).
      * Skips when a full API profile is already stored ([UserProfile.isClientPreviewOnly] is false).
      */
+    /**
+     * Seeds or refreshes a lightweight profile from a DM conversations list [User].
+     * Skips when a full `/user/...` profile is already cached.
+     */
+    fun mergeFromDmUser(user: User) {
+        val existing = get(user.id)
+        if (existing != null && !existing.isClientPreviewOnly) return
+        put(
+            UserProfile(
+                id = user.id,
+                username = user.username.ifBlank { existing?.username.orEmpty() },
+                displayName = existing?.displayName?.takeIf { it.isNotBlank() }
+                    ?: user.username.takeIf { it.isNotBlank() }
+                    ?: existing?.username.orEmpty(),
+                profilePicture = user.profile_picture?.takeIf { it.isNotBlank() }
+                    ?: existing?.profilePicture,
+                bio = existing?.bio,
+                online = user.online,
+                lastSeen = user.last_seen.takeIf { it.isNotBlank() } ?: existing?.lastSeen,
+                createdAt = user.created_at.takeIf { it.isNotBlank() } ?: existing?.createdAt,
+                verified = existing?.verified,
+                suspended = existing?.suspended,
+                suspensionReason = existing?.suspensionReason,
+                deleted = existing?.deleted,
+                isClientPreviewOnly = true
+            )
+        )
+    }
+
     fun mergePreviewFromPublicMessage(message: Message) {
         val uid = message.user_id
         if (uid <= 0) return

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/ChatsTab.kt

@@ -6,9 +6,14 @@ import androidx.compose.animation.fadeOut
 import androidx.compose.animation.slideInVertically
 import androidx.compose.animation.slideOutVertically
 import androidx.compose.animation.togetherWith
+import androidx.compose.foundation.LocalIndication
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
@@ -26,6 +31,7 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.text.style.TextOverflow
 import org.jetbrains.compose.resources.stringResource
@@ -33,6 +39,7 @@ import ru.fromchat.Res
 import ru.fromchat.api.ApiClient
 import ru.fromchat.api.ConnectionStateStore
 import ru.fromchat.api.ConnectionStatus
+import ru.fromchat.api.ProfileCache
 import ru.fromchat.api.db.CachedConversation
 import ru.fromchat.api.db.MessageCacheStore
 import ru.fromchat.chat_last_mesaage
@@ -40,6 +47,32 @@ import ru.fromchat.public_chat
 import ru.fromchat.net.NetworkConnectivity
 import ru.fromchat.ui.ConnectingEllipsis
 import ru.fromchat.ui.LocalNavController
+import ru.fromchat.ui.chat.Avatar
+
+@Composable
+private fun ChatRowAvatar(
+    profilePictureUrl: String?,
+    displayNameForInitials: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val interaction = remember { MutableInteractionSource() }
+    Box(
+        modifier
+            .size(40.dp)
+            .clickable(
+                interactionSource = interaction,
+                indication = LocalIndication.current,
+                onClick = onClick
+            )
+    ) {
+        Avatar(
+            profilePictureUrl = profilePictureUrl,
+            displayName = displayNameForInitials,
+            modifier = Modifier.fillMaxSize()
+        )
+    }
+}
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -49,6 +82,10 @@ fun ChatsTab() {
     val connectionStatus by ConnectionStateStore.status.collectAsState()
     val online by NetworkConnectivity.isOnline.collectAsState(initial = true)
     var dmConversations by remember { mutableStateOf<List<CachedConversation>>(emptyList()) }
+    var publicListAvatarUserId by remember { mutableStateOf<Int?>(null) }
+    var publicListAvatarUrl by remember { mutableStateOf<String?>(null) }
+    var publicListAvatarLabel by remember { mutableStateOf<String?>(null) }
+    var publicLastMessagePreview by remember { mutableStateOf<String?>(null) }
 
     LaunchedEffect(Unit) {
         // Load cached DM conversations first for instant offline display.
@@ -56,11 +93,28 @@ fun ChatsTab() {
             dmConversations = MessageCacheStore.loadCachedDmConversations()
         }
 
+        runCatching {
+            val last = MessageCacheStore.loadRecentPublicMessages(1).lastOrNull()
+            publicLastMessagePreview = last?.content?.trim()?.takeIf { it.isNotEmpty() }
+            if (last != null && last.user_id > 0) {
+                ProfileCache.mergePreviewFromPublicMessage(last)
+                publicListAvatarUserId = last.user_id
+                publicListAvatarUrl = last.profile_picture
+                publicListAvatarLabel = last.username.takeIf { it.isNotBlank() }
+                    ?: ProfileCache.get(last.user_id)?.displayName?.takeIf { it.isNotBlank() }
+            } else {
+                publicListAvatarUserId = null
+                publicListAvatarUrl = null
+                publicListAvatarLabel = null
+            }
+        }
+
         // Then refresh from network and update cache + state.
         runCatching {
             ApiClient.getDmConversations()
         }.onSuccess { conversations ->
             runCatching {
+                conversations.forEach { ProfileCache.mergeFromDmUser(it.user) }
                 MessageCacheStore.replaceDmConversations(conversations)
                 dmConversations = MessageCacheStore.loadCachedDmConversations()
             }
@@ -130,11 +184,41 @@ fun ChatsTab() {
             )
         }
     ) { innerPadding ->
+        val publicChatTitle = stringResource(Res.string.public_chat)
         LazyColumn(contentPadding = innerPadding) {
             item {
+                val publicUid = publicListAvatarUserId
+                val publicPic = publicListAvatarUrl
+                val publicLabel = publicListAvatarLabel?.takeIf { it.isNotBlank() } ?: publicChatTitle
                 ListItem(
-                    headlineContent = { Text(stringResource(Res.string.public_chat)) },
-                    supportingContent = { Text(stringResource(Res.string.chat_last_mesaage)) },
+                    leadingContent = {
+                        ChatRowAvatar(
+                            profilePictureUrl = publicPic,
+                            displayNameForInitials = publicLabel,
+                            onClick = {
+                                when {
+                                    publicUid != null && publicUid > 0 ->
+                                        navController.navigate("profile/$publicUid")
+                                    else -> navController.navigate("chats/publicChat")
+                                }
+                            }
+                        )
+                    },
+                    headlineContent = {
+                        Text(
+                            text = publicChatTitle,
+                            maxLines = 1,
+                            overflow = TextOverflow.Ellipsis
+                        )
+                    },
+                    supportingContent = {
+                        val preview = publicLastMessagePreview
+                        Text(
+                            text = preview ?: stringResource(Res.string.chat_last_mesaage),
+                            maxLines = 2,
+                            overflow = TextOverflow.Ellipsis
+                        )
+                    },
                     modifier = Modifier.clickable {
                         navController.navigate("chats/publicChat")
                     }
@@ -143,11 +227,30 @@ fun ChatsTab() {
 
             items(dmConversations.size) { index ->
                 val conv = dmConversations[index]
+                val cached = ProfileCache.get(conv.otherUserId)
+                val avatarUrl = cached?.profilePicture
+                val avatarLabel = cached?.displayName?.takeIf { it.isNotBlank() }
+                    ?: cached?.username?.takeIf { it.isNotBlank() }
+                    ?: conv.displayName.ifBlank { "User ${conv.otherUserId}" }
+                val preview = conv.lastMessagePreview ?: "Direct messages"
                 ListItem(
-                    headlineContent = { Text(conv.displayName.ifBlank { "User ${conv.otherUserId}" }) },
-                    supportingContent = {
-                        val preview = conv.lastMessagePreview ?: "Direct messages"
-                        Text(preview)
+                    leadingContent = {
+                        ChatRowAvatar(
+                            profilePictureUrl = avatarUrl,
+                            displayNameForInitials = avatarLabel,
+                            onClick = {
+                                if (conv.otherUserId != 0) {
+                                    navController.navigate("profile/${conv.otherUserId}")
+                                }
+                            }
+                        )
+                    },
+                    headlineContent = {
+                        Text(
+                            text = preview,
+                            maxLines = 2,
+                            overflow = TextOverflow.Ellipsis
+                        )
                     },
                     trailingContent = {
                         if (conv.unreadCount > 0) {

app/shared/src/commonMain/kotlin/ru/fromchat/ui/profile/ProfileScreen.kt

@@ -299,12 +299,14 @@ fun ProfileScreen(
                                 userId = profile.id
                             )
                         }
-                        Spacer(modifier = Modifier.height(4.dp))
-                        Text(
-                            text = "@${profile.username}",
-                            style = MaterialTheme.typography.bodyMedium,
-                            color = MaterialTheme.colorScheme.onSurfaceVariant
-                        )
+                        if (profile.username.isNotBlank()) {
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Text(
+                                text = "@${profile.username}",
+                                style = MaterialTheme.typography.bodyMedium,
+                                color = MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                        }
                         Spacer(modifier = Modifier.height(36.dp))
 
                         Row(
@@ -418,21 +420,23 @@ fun ProfileScreen(
                         }
 
                         Category(Modifier.padding(top = 16.dp), title = "Details") {
-                            ListItem(
-                                headline = "Username",
-                                supportingText = profile.username,
-                                leadingContent = {
-                                    CompositionLocalProvider(LocalContentColor provides MaterialTheme.colorScheme.onSurface) {
-                                        Icon(
-                                            imageVector = Icons.Filled.AlternateEmail,
-                                            contentDescription = null
-                                        )
-                                    }
-                                },
-                                divider = true,
-                                dividerColor = CategoryDefaults.dividerColor,
-                                dividerThickness = CategoryDefaults.dividerThickness
-                            )
+                            if (profile.username.isNotBlank()) {
+                                ListItem(
+                                    headline = "Username",
+                                    supportingText = profile.username,
+                                    leadingContent = {
+                                        CompositionLocalProvider(LocalContentColor provides MaterialTheme.colorScheme.onSurface) {
+                                            Icon(
+                                                imageVector = Icons.Filled.AlternateEmail,
+                                                contentDescription = null
+                                            )
+                                        }
+                                    },
+                                    divider = true,
+                                    dividerColor = CategoryDefaults.dividerColor,
+                                    dividerThickness = CategoryDefaults.dividerThickness
+                                )
+                            }
 
                             if (!profile.bio.isNullOrBlank()) {
                                 ListItem(