fix(chat): resolve compilation errors and formatting violations

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatBubble.kt

@@ -72,10 +72,10 @@ import com.m57.hermescontrol.theme.SystemMessageColor
 import com.m57.hermescontrol.theme.ToolChipColor
 import com.m57.hermescontrol.theme.ToolChipColorLight
 import com.m57.hermescontrol.theme.UserBubble
+import kotlinx.coroutines.delay
 import java.time.Instant
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
-import kotlinx.coroutines.delay
 
 @Composable
 fun ChatBubble(
@@ -811,7 +811,8 @@ private fun RichText(
     )
 }
 
-private val TIMESTAMP_FORMATTER = DateTimeFormatter.ofPattern("HH:mm")
+private val TIMESTAMP_FORMATTER =
+    DateTimeFormatter.ofPattern("HH:mm")
         .withZone(ZoneId.systemDefault())
 
 private fun formatTimestamp(timestamp: Long): String {

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatScreen.kt

@@ -171,7 +171,8 @@ fun ChatScreen(
 
     // Auto-scroll to bottom on new messages
     LaunchedEffect(state.messages.size, state.streamingMessage?.content?.length, state.isThinking) {
-        val totalItems = state.messages.size +
+        val totalItems =
+            state.messages.size +
                 (if (state.streamingMessage != null) 1 else 0) +
                 (if (state.isThinking) 1 else 0)
         if (totalItems > 0) {
@@ -354,7 +355,8 @@ fun ChatScreen(
                     .imePadding(),
         ) {
             androidx.compose.animation.AnimatedVisibility(
-                visible = state.connectionStatus == ConnectionStatus.RECONNECTING ||
+                visible =
+                    state.connectionStatus == ConnectionStatus.RECONNECTING ||
                         state.connectionStatus == ConnectionStatus.DISCONNECTED,
                 enter = androidx.compose.animation.expandVertically() + androidx.compose.animation.fadeIn(),
                 exit = androidx.compose.animation.shrinkVertically() + androidx.compose.animation.fadeOut(),
@@ -365,14 +367,16 @@ fun ChatScreen(
                     contentColor = MaterialTheme.colorScheme.onErrorContainer,
                 ) {
                     Row(
-                        modifier = Modifier
+                        modifier =
+                            Modifier
                                 .fillMaxWidth()
                                 .padding(horizontal = 16.dp, vertical = 8.dp),
                         verticalAlignment = Alignment.CenterVertically,
                         horizontalArrangement = Arrangement.SpaceBetween,
                     ) {
                         Text(
-                            text = if (state.connectionStatus == ConnectionStatus.RECONNECTING) {
+                            text =
+                                if (state.connectionStatus == ConnectionStatus.RECONNECTING) {
                                     "Reconnecting to Hermes…"
                                 } else {
                                     "Disconnected from Hermes"
@@ -382,7 +386,8 @@ fun ChatScreen(
                         if (state.connectionStatus == ConnectionStatus.DISCONNECTED) {
                             TextButton(
                                 onClick = { viewModel.reconnect() },
-                                colors = androidx.compose.material3.ButtonDefaults.textButtonColors(
+                                colors =
+                                    androidx.compose.material3.ButtonDefaults.textButtonColors(
                                         contentColor = MaterialTheme.colorScheme.onErrorContainer,
                                     ),
                             ) {

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatViewModel.kt

@@ -254,13 +254,12 @@ class ChatViewModel(
     private fun handleMessageComplete(event: WsEvent.MessageComplete) {
         if (!isCurrentSession(event.sessionId)) return
 
-        // Finalize: move the streaming message into the main list
+        var finalizedMsg: ChatMessage? = null
-        val finalizedMsg: ChatMessage
+        var sessionId: String? = null
-        val sessionId: String?
 
         _uiState.update { state ->
             val streaming = state.streamingMessage
-            finalizedMsg = if (streaming != null) {
+            val msg = if (streaming != null) {
                 streaming.copy(
                     content = event.text,
                     isStreaming = false,
@@ -271,9 +270,10 @@ class ChatViewModel(
                     content = event.text,
                 )
             }
+            finalizedMsg = msg
             sessionId = state.currentSessionId
             state.copy(
-                messages = state.messages + finalizedMsg,
+                messages = state.messages + msg,
                 streamingMessage = null,
                 isAgentTyping = false,
                 isThinking = false,
@@ -283,10 +283,11 @@ class ChatViewModel(
         streamingMessageId = null
 
         // Persist finalized message — OUTSIDE update{} to avoid CAS retry
+        val msgToPersist = finalizedMsg
         val sid = sessionId ?: _uiState.value.currentSessionId
-        if (sid != null) {
+        if (msgToPersist != null && sid != null) {
             viewModelScope.launch(Dispatchers.IO) {
-                dao.upsert(finalizedMsg.toEntity(sid))
+                dao.upsert(msgToPersist.toEntity(sid))
             }
         }
     }
@@ -296,16 +297,17 @@ class ChatViewModel(
 
         // If we still have an un-finalized streaming message (no MessageComplete
         // was sent, which happens on interrupts), fold it into the list.
-        val orphan: ChatMessage?
+        var orphan: ChatMessage? = null
-        val sessionId: String?
+        var sessionId: String? = null
 
         _uiState.update { state ->
             val streaming = state.streamingMessage
-            orphan = streaming?.copy(isStreaming = false)
+            val msg = streaming?.copy(isStreaming = false)
+            orphan = msg
             sessionId = state.currentSessionId
-            if (orphan != null) {
+            if (msg != null) {
                 state.copy(
-                    messages = state.messages + orphan,
+                    messages = state.messages + msg,
                     streamingMessage = null,
                     isAgentTyping = false,
                     isThinking = false,
@@ -322,10 +324,11 @@ class ChatViewModel(
         streamingMessageId = null
 
         // Persist orphaned streaming message
+        val msgToPersist = orphan
         val sid = sessionId ?: _uiState.value.currentSessionId
-        if (orphan != null && sid != null) {
+        if (msgToPersist != null && sid != null) {
             viewModelScope.launch(Dispatchers.IO) {
-                dao.upsert(orphan.toEntity(sid))
+                dao.upsert(msgToPersist.toEntity(sid))
             }
         }
     }
@@ -358,13 +361,15 @@ class ChatViewModel(
 
         _uiState.update { state ->
             val messages = state.messages.toMutableList()
-            val toolIdx = messages.indexOfLast {
+            val toolIdx =
+                messages.indexOfLast {
                     it.role == MessageRole.TOOL &&
                         it.toolName == event.name &&
                         it.toolStatus == ToolStatus.RUNNING
                 }
             if (toolIdx >= 0) {
-                val updated = messages[toolIdx].copy(
+                val updated =
+                    messages[toolIdx].copy(
                         toolStatus = ToolStatus.COMPLETED,
                         content = event.data.toString(),
                     )
@@ -494,7 +499,8 @@ class ChatViewModel(
             return
         }
 
-        val userMessage = ChatMessage(
+        val userMessage =
+            ChatMessage(
                 role = MessageRole.USER,
                 content = text,
             )
@@ -892,11 +898,13 @@ class ChatViewModel(
      * responded to. Surfaces a timeout error for the user.
      */
     private fun startPendingRequestCleanup() {
-        pendingCleanupJob = viewModelScope.launch {
+        pendingCleanupJob =
+            viewModelScope.launch {
                 while (true) {
                     delay(PENDING_REQUEST_TIMEOUT_MS)
                     val now = System.currentTimeMillis()
-                val stale = pendingRequests.entries.filter {
+                    val stale =
+                        pendingRequests.entries.filter {
                             now - it.value.createdAt > PENDING_REQUEST_TIMEOUT_MS
                         }
                 for (entry in stale) {