add TODO comments for upcoming implementation

app/src/main/java/eu/gaudian/translator/view/exercises/StartExerciseScreen.kt

@@ -89,6 +89,12 @@ fun StartExerciseScreen(
     }
 }
 
+//TODO add a settings icon here (top right), this should open a modal bottom sheed with our
+// OptionItemSwitch from startscreen
+//change the behavior: shuffle cards, default: on
+//shuffle languages, default: on
+//training mode, default: off
+//due today will be place more prominent, not in the bottom sheet
 @Composable
 fun TopBarSection(onBackClick: () -> Unit) {
     Row(
@@ -150,6 +156,8 @@ fun SectionHeader(title: String, actionText: String? = null, onActionClick: () -
     }
 }
 
+//TODO Get our (exisiting) language pairs from the viewmodel, user should be able to select 0,1 , or several, also order by more popular (amount of flashcard in one language)
+// so that more used/popular language pairs appear first
 @Composable
 fun LanguagePairSection() {
     var selectedPair by remember { mutableStateOf(0) }
@@ -173,6 +181,7 @@ fun LanguagePairSection() {
     }
 }
 
+
 @Composable
 fun LanguageChip(text: String, isSelected: Boolean, modifier: Modifier = Modifier, onClick: () -> Unit) {
     Surface(
@@ -198,6 +207,8 @@ fun LanguageChip(text: String, isSelected: Boolean, modifier: Modifier = Modifie
     }
 }
 
+//TODO uSe our real categories here
+//If there are too many categories (+15) use CategoryDropDown instead of FlowRow
 @OptIn(ExperimentalLayoutApi::class)
 @Composable
 fun CategoriesSection() {
@@ -233,9 +244,11 @@ fun CategoriesSection() {
     }
 }
 
+//TODO use our real stages here
+//Make it a flow row, as all stages in one row does not work
 @Composable
 fun DifficultySection() {
-    val difficulties = listOf("Easy", "Medium", "Hard")
+    val stages = listOf("New", "Stage 1", "Stage 2", "Stage 3", "Stage 4", "Stage 5", "Learned")
     var selectedDifficulty by remember { mutableStateOf("Medium") }
 
     Column {
@@ -249,7 +262,7 @@ fun DifficultySection() {
                 modifier = Modifier.fillMaxSize().padding(4.dp),
                 verticalAlignment = Alignment.CenterVertically
             ) {
-                difficulties.forEach { level ->
+                stages.forEach { level ->
                     val isSelected = selectedDifficulty == level
                     Box(
                         modifier = Modifier
@@ -273,6 +286,9 @@ fun DifficultySection() {
     }
 }
 
+//TODO add optionitemswitch "Die Today Only", make sure that the amount of cards displayed is correct
+
+//TODO use the slider from ImportVocabulary dialog here, also with the quick selection of cards
 @Composable
 fun NumberOfCardsSection() {
     var sliderPosition by remember { mutableFloatStateOf(25f) }
@@ -321,6 +337,7 @@ fun NumberOfCardsSection() {
     }
 }
 
+//TODO use our four question types here, from StartScreen.kt
 @Composable
 fun QuestionTypesSection() {
     var selectedTypes by remember { mutableStateOf(setOf("Multiple Choice", "Spelling")) }
@@ -395,7 +412,6 @@ fun QuestionTypeCard(title: String, subtitle: String, icon: ImageVector, isSelec
         }
     }
 }
-
 @Composable
 fun BottomButtonSection() {
     Box(