android: refine multi-select ui to telegram-like layout

android/CHANGELOG.md

@@ -1015,3 +1015,11 @@
 - Message actions are now driven by Telegram-like context UI:
   - tap -> context sheet actions,
   - long-press -> selection mode flow.
+
+### Step 138 - Multi-select UX closer to Telegram
+- Refined selection top bar:
+  - removed extra overflow/load action from selection mode,
+  - kept focused actions only: close, selected count, forward, delete.
+- In `MULTI` selection mode, composer is now replaced with a compact bottom action row:
+  - `Reply` (enabled for single selected message),
+  - `Forward`.

android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt

@@ -419,9 +419,6 @@ fun ChatScreen(
                 ) {
                     Icon(imageVector = Icons.Filled.DeleteOutline, contentDescription = "Delete selected")
                 }
-                IconButton(onClick = onLoadMore, enabled = !state.isLoadingMore) {
-                    Icon(imageVector = Icons.Filled.MoreVert, contentDescription = "Selection menu")
-                }
             }
         } else {
             Row(
@@ -1045,7 +1042,14 @@ fun ChatScreen(
             }
         }
 
-        if (isChannelChat && !state.canSendMessages) {
+        if (state.actionState.mode == MessageSelectionMode.MULTI && state.actionState.hasSelection) {
+            MultiSelectActionBar(
+                selectedCount = state.actionState.selectedCount,
+                canReply = state.actionState.selectedCount == 1 && state.selectedMessage != null,
+                onReply = { state.selectedMessage?.let(onReplySelected) },
+                onForward = onForwardSelected,
+            )
+        } else if (isChannelChat && !state.canSendMessages) {
             ChannelReadOnlyBar(
                 modifier = Modifier
                     .fillMaxWidth()
@@ -2161,6 +2165,50 @@ private fun ChannelReadOnlyBar(
     }
 }
 
+@Composable
+private fun MultiSelectActionBar(
+    selectedCount: Int,
+    canReply: Boolean,
+    onReply: () -> Unit,
+    onForward: () -> Unit,
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .navigationBarsPadding()
+            .padding(horizontal = 10.dp, vertical = 6.dp),
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Surface(
+            shape = RoundedCornerShape(999.dp),
+            color = MaterialTheme.colorScheme.surface.copy(alpha = 0.95f),
+            modifier = Modifier.weight(1f),
+        ) {
+            TextButton(
+                onClick = onReply,
+                enabled = canReply,
+                modifier = Modifier.fillMaxWidth(),
+            ) {
+                Text("Reply")
+            }
+        }
+        Surface(
+            shape = RoundedCornerShape(999.dp),
+            color = MaterialTheme.colorScheme.surface.copy(alpha = 0.95f),
+            modifier = Modifier.weight(1f),
+        ) {
+            TextButton(
+                onClick = onForward,
+                enabled = selectedCount > 0,
+                modifier = Modifier.fillMaxWidth(),
+            ) {
+                Text("Forward")
+            }
+        }
+    }
+}
+
 private fun parseMessageLocalDate(createdAt: String): LocalDate? {
     return runCatching {
         Instant.parse(createdAt).atZone(ZoneId.systemDefault()).toLocalDate()