claude added learn direction toggle switch

app/src/main/java/dev/lueckemeyer/vocoach/db/dao/LeitnerStateDao.java

@@ -24,5 +24,20 @@ public interface LeitnerStateDao {
            "JOIN unit u ON u.id = v.unit_id " +
            "WHERE ls.direction = :direction AND ls.box_number = :box " +
            "ORDER BY u.book_id ASC, u.position ASC, v.position ASC")
-    List<LeitnerState> getByBoxOrderedSync(String direction, int box);
+    List<LeitnerState> getByBoxOrderedAsc(String direction, int box);
+
+    @Query("SELECT ls.* FROM leitner_state ls " +
+           "JOIN card c ON c.id = ls.card_id " +
+           "JOIN volet v ON v.id = c.volet_id " +
+           "JOIN unit u ON u.id = v.unit_id " +
+           "WHERE ls.direction = :direction AND ls.box_number = :box " +
+           "ORDER BY u.book_id DESC, u.position DESC, v.position DESC")
+    List<LeitnerState> getByBoxOrderedDesc(String direction, int box);
+
+    /** Dispatches to ASC or DESC based on the ascending flag. */
+    default List<LeitnerState> getByBoxOrderedSync(String direction, int box, boolean ascending) {
+        return ascending
+                ? getByBoxOrderedAsc(direction, box)
+                : getByBoxOrderedDesc(direction, box);
+    }
 }

app/src/main/java/dev/lueckemeyer/vocoach/repository/TrainingRepository.java

@@ -68,7 +68,7 @@ public class TrainingRepository {
 
     // ── Scheduling ────────────────────────────────────────────────────────────
 
-    public TrainingCard nextCard(String direction) {
+    public TrainingCard nextCard(String direction, boolean ascending) {
         long dayStart = todayStartEpochSeconds();
 
         // Pending card first
@@ -83,13 +83,7 @@ public class TrainingRepository {
         Set<Integer> attempted     = new HashSet<>(attemptedIds);
 
         for (int box = 1; box <= 5; box++) {
-            for (LeitnerState ls : db.leitnerStateDao().getByBoxOrderedSync(direction, box)) {
-                if (!attempted.contains(ls.id)) return buildCard(ls);
-            }
-        }
-        attempted     = new HashSet<>();
-        for (int box = 1; box <= 5; box++) {
-            for (LeitnerState ls : db.leitnerStateDao().getByBoxOrderedSync(direction, box)) {
+            for (LeitnerState ls : db.leitnerStateDao().getByBoxOrderedSync(direction, box, ascending)) {
                 if (!attempted.contains(ls.id)) return buildCard(ls);
             }
         }

app/src/main/java/dev/lueckemeyer/vocoach/ui/home/HomeFragment.java

@@ -26,9 +26,14 @@ public class HomeFragment extends Fragment {
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
+        // Toggle: checked = Learn (DESC = higher boxes first), unchecked = Repeat (ASC)
+        // Default to Repeat (ASC) on first launch
+        binding.toggleMode.setChecked(false);
+
         binding.btnFrToNative.setOnClickListener(v -> {
             Bundle args = new Bundle();
             args.putString("direction", "fr_to_native");
+            args.putBoolean("ascending", isRepeatMode());
             Navigation.findNavController(v)
                     .navigate(R.id.action_home_to_training, args);
         });
@@ -36,6 +41,7 @@ public class HomeFragment extends Fragment {
         binding.btnNativeToFr.setOnClickListener(v -> {
             Bundle args = new Bundle();
             args.putString("direction", "native_to_fr");
+            args.putBoolean("ascending", isRepeatMode());
             Navigation.findNavController(v)
                     .navigate(R.id.action_home_to_training, args);
         });
@@ -45,6 +51,11 @@ public class HomeFragment extends Fragment {
                         .navigate(R.id.action_home_to_stats));
     }
 
+    /** Returns true when the toggle is in Repeat position (ASC ordering). */
+    private boolean isRepeatMode() {
+        return !binding.toggleMode.isChecked();
+    }
+
     @Override
     public void onDestroyView() {
         super.onDestroyView();

app/src/main/java/dev/lueckemeyer/vocoach/ui/training/TrainingFragment.java

@@ -20,6 +20,7 @@ public class TrainingFragment extends Fragment {
     private FragmentTrainingBinding binding;
     private TrainingRepository repo;
     private String direction;
+    private boolean ascending;
     private int sessionId;
     private TrainingCard current;
     private final ExecutorService exec = Executors.newSingleThreadExecutor();
@@ -35,8 +36,9 @@ public class TrainingFragment extends Fragment {
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
-        // Read direction argument passed via Bundle
+        // Read direction and sort order arguments passed from HomeFragment
         direction = requireArguments().getString("direction", "fr_to_native");
+        ascending = requireArguments().getBoolean("ascending", true);
         repo = new TrainingRepository(requireContext());
 
         exec.execute(() -> {
@@ -64,7 +66,7 @@ public class TrainingFragment extends Fragment {
         binding.layoutSolution.setVisibility(View.GONE);
 
         exec.execute(() -> {
-            current = repo.nextCard(direction);
+            current = repo.nextCard(direction, ascending);
             requireActivity().runOnUiThread(() -> {
                 if (current == null) showAllDone();
                 else {

app/src/main/res/layout/fragment_home.xml

@@ -11,7 +11,40 @@
         android:layout_height="wrap_content"
         android:text="What would you like to do?"
         android:textAppearance="?attr/textAppearanceHeadline6"
-        android:layout_marginBottom="40dp"/>
+        android:layout_marginBottom="32dp"/>
+
+    <!-- Repeat / Learn toggle -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:layout_marginBottom="24dp">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Repeat"
+            android:textAppearance="?attr/textAppearanceBody1"
+            android:gravity="end"
+            android:paddingEnd="12dp"/>
+
+        <com.google.android.material.switchmaterial.SwitchMaterial
+            android:id="@+id/toggle_mode"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"/>
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Learn"
+            android:textAppearance="?attr/textAppearanceBody1"
+            android:gravity="start"
+            android:paddingStart="12dp"/>
+
+    </LinearLayout>
 
     <com.google.android.material.button.MaterialButton
         android:id="@+id/btn_fr_to_native"