feat: Add persistent scrollbar to events list

- Enable fadeScrollbars=false in RecyclerView
- Improve visibility of scrollbar

fix: Prevent navigation focus escape at end of list

- Implement custom LinearLayoutManager to intercept focus search
- Block FOCUS_DOWN action at the last item
- Remove legacy OnKeyListener and OnScrollListener

app/src/main/java/com/streamplayer/MainActivity.java

@@ -73,7 +73,18 @@ public class MainActivity extends AppCompatActivity {
         eventAdapter = new EventAdapter(event -> openPlayer(event.getTitle(), event.getPageUrl()));
         eventRepository = new EventRepository();
         channelLayoutManager = new GridLayoutManager(this, getSpanCount());
-        eventLayoutManager = new LinearLayoutManager(this);
+        eventLayoutManager = new LinearLayoutManager(this) {
+            @Override
+            public View onInterceptFocusSearch(View focused, int direction) {
+                if (direction == View.FOCUS_DOWN) {
+                    int pos = getPosition(focused);
+                    if (pos == getItemCount() - 1) {
+                        return focused;
+                    }
+                }
+                return super.onInterceptFocusSearch(focused, direction);
+            }
+        };
 
         sections = buildSections();
         sectionList.setLayoutManager(new LinearLayoutManager(this));
@@ -192,41 +203,6 @@ public class MainActivity extends AppCompatActivity {
         // Clear existing listeners
         contentList.clearOnScrollListeners();
 
-        // Prevent navigation out of events section via remote control
-        contentList.setOnKeyListener((v, keyCode, event) -> {
-            if (event.getAction() == KeyEvent.ACTION_DOWN) {
-                if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
-                    int totalItemCount = eventLayoutManager.getItemCount();
-                    if (totalItemCount > 0) {
-                        int lastVisiblePosition = eventLayoutManager.findLastVisibleItemPosition();
-                        // Prevent going down if we're at or near the last item
-                        if (lastVisiblePosition >= totalItemCount - 1) {
-                            // Consume the event to prevent navigation
-                            return true;
-                        }
-                    }
-                }
-            }
-            return false;
-        });
-
-        // Also prevent scroll-based navigation
-        contentList.addOnScrollListener(new RecyclerView.OnScrollListener() {
-            @Override
-            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                super.onScrolled(recyclerView, dx, dy);
-                if (dy > 0) {  // Scrolling down
-                    int totalItemCount = eventLayoutManager.getItemCount();
-                    if (totalItemCount > 0) {
-                        int lastCompletelyVisiblePosition = eventLayoutManager.findLastCompletelyVisibleItemPosition();
-                        if (lastCompletelyVisiblePosition == totalItemCount - 1) {
-                            recyclerView.stopScroll();
-                        }
-                    }
-                }
-            }
-        });
-
         if (cachedEvents.isEmpty()) {
             loadEvents(false);
         } else {