fix: resolve all build compilation and style check warnings (#597)

* fix: resolve all build compilation and style check warnings

* fix: remove unused import in SystemViewModel

app/src/main/java/com/m57/hermescontrol/ui/sessions/SessionsScreen.kt

@@ -28,6 +28,7 @@ import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.Send
 import androidx.compose.material.icons.filled.CheckCircle
 import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.Code
@@ -37,7 +38,6 @@ import androidx.compose.material.icons.filled.History
 import androidx.compose.material.icons.filled.Language
 import androidx.compose.material.icons.filled.Search
 import androidx.compose.material.icons.filled.SelectAll
-import androidx.compose.material.icons.filled.Send
 import androidx.compose.material.icons.filled.Terminal
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
@@ -115,7 +115,7 @@ import kotlin.math.abs
  */
 private fun sourceIcon(source: String?): ImageVector? =
     when (source?.lowercase()) {
-        "telegram", "tg" -> Icons.Filled.Send
+        "telegram", "tg" -> Icons.AutoMirrored.Filled.Send
         "web", "dashboard" -> Icons.Filled.Language
         "api", "rest" -> Icons.Filled.Code
         "cli", "terminal" -> Icons.Filled.Terminal
@@ -254,10 +254,6 @@ private fun JsonElement.searchText(): String? =
                 .firstNotNullOfOrNull { fieldName -> this[fieldName]?.searchText() }
                 ?: wrapperFieldNames.firstNotNullOfOrNull { fieldName -> this[fieldName]?.searchText() }
         }
-
-        else -> {
-            null
-        }
     }
 
 private fun displayedSessions(state: SessionsUiState): List<SessionTreeItem> =

app/src/main/java/com/m57/hermescontrol/ui/sessions/SessionsViewModel.kt

@@ -85,8 +85,8 @@ class SessionsViewModel : ViewModel() {
                         it.copy(
                             isLoading = false,
                             isLoadingMore = false,
-                            sessions = data?.sessions.orEmpty(),
-                            total = data?.total ?: 0,
+                            sessions = data.sessions.orEmpty(),
+                            total = data.total,
                             selectedIds = emptySet(),
                         )
                     }
@@ -173,7 +173,7 @@ class SessionsViewModel : ViewModel() {
                         _uiState.update {
                             it.copy(
                                 isSearching = false,
-                                searchResults = result.data?.results.orEmpty(),
+                                searchResults = result.data.results.orEmpty(),
                                 searchError = null,
                             )
                         }
@@ -207,8 +207,7 @@ class SessionsViewModel : ViewModel() {
                         it.copy(
                             isLoadingStats = false,
                             stats =
-                                data?.let { SessionStats(total = it.total, active = it.active) }
-                                    ?: SessionStats(),
+                                SessionStats(total = data.total, active = data.active),
                         )
                     }
                 },
@@ -318,7 +317,7 @@ class SessionsViewModel : ViewModel() {
                 }
             when (result) {
                 is NetworkResult.Success -> {
-                    val promptText = result.data?.prompt ?: "No prompt available"
+                    val promptText = result.data.prompt ?: "No prompt available"
                     _uiState.update { it.copy(toastMessage = promptText) }
                 }