fix: fix theme switch

app/src/main/java/com/rosetta/messenger/ui/settings/ThemeScreen.kt

@@ -29,16 +29,17 @@ import com.rosetta.messenger.ui.components.AppleEmojiText
 @Composable
 fun ThemeScreen(
     isDarkTheme: Boolean,
+    currentThemeMode: String,
     onBack: () -> Unit,
-    onThemeChange: (Boolean) -> Unit
+    onThemeModeChange: (String) -> Unit
 ) {
     val backgroundColor = if (isDarkTheme) Color(0xFF1A1A1A) else Color(0xFFFFFFFF)
     val surfaceColor = if (isDarkTheme) Color(0xFF2C2C2E) else Color(0xFFF2F2F7)
     val textColor = if (isDarkTheme) Color.White else Color.Black
     val secondaryTextColor = if (isDarkTheme) Color(0xFF8E8E93) else Color(0xFF666666)
-    
+
     // Theme mode: "light", "dark", "auto"
-    var themeMode by remember { mutableStateOf(if (isDarkTheme) "dark" else "light") }
+    var themeMode by remember { mutableStateOf(currentThemeMode) }
     
     // Handle back gesture
     BackHandler { onBack() }
@@ -105,7 +106,7 @@ fun ThemeScreen(
                     onClick = {
                         if (themeMode != "light") {
                             themeMode = "light"
-                            onThemeChange(false)
+                            onThemeModeChange("light")
                         }
                     },
                     textColor = textColor,
@@ -113,7 +114,7 @@ fun ThemeScreen(
                     showDivider = true,
                     isDarkTheme = isDarkTheme
                 )
-                
+
                 TelegramThemeOption(
                     icon = TablerIcons.Moon,
                     title = "Dark",
@@ -121,7 +122,7 @@ fun ThemeScreen(
                     onClick = {
                         if (themeMode != "dark") {
                             themeMode = "dark"
-                            onThemeChange(true)
+                            onThemeModeChange("dark")
                         }
                     },
                     textColor = textColor,
@@ -129,14 +130,16 @@ fun ThemeScreen(
                     showDivider = true,
                     isDarkTheme = isDarkTheme
                 )
-                
+
                 TelegramThemeOption(
                     icon = TablerIcons.DeviceMobile,
                     title = "System",
                     isSelected = themeMode == "auto",
                     onClick = {
-                        themeMode = "auto"
-                        // For now, we'll just keep the current theme
+                        if (themeMode != "auto") {
+                            themeMode = "auto"
+                            onThemeModeChange("auto")
+                        }
                     },
                     textColor = textColor,
                     secondaryTextColor = secondaryTextColor,