added leaderboards (without clickthrough to filtered by author - later)

frontend/lib/provider/quote_provider.dart

@@ -38,7 +38,7 @@ class QuoteProvider extends ChangeNotifier {
     return filtered;
   }
 
-  Map<String, int> get authorCounts {
+  Map<String, int> get _authorCounts {
     final counts = <String, int>{};
 
     for (var quote in filteredQuotes) {
@@ -52,6 +52,23 @@ class QuoteProvider extends ChangeNotifier {
     return counts;
   }
 
+  List<MapEntry<String, int>> get sortedAuthorCounts {
+    final counts = <String, int>{};
+
+    for (var quote in filteredQuotes) {
+      counts.update(
+        quote.author,
+        (value) => value + 1,
+        ifAbsent: () => 1,
+      );
+    }
+
+    final list = counts.entries.toList()
+      ..sort((a, b) => b.value.compareTo(a.value)); // descending
+
+    return list;
+  }
+
   final QuoteRepository repo = QuoteRepository();
 
   int filterBy = 0; // 0 = by author, 1 = by quote
@@ -191,4 +208,30 @@ class QuoteProvider extends ChangeNotifier {
     final file = File('${dir.path}/hlasky_$datetime.txt');
     await file.writeAsString("${filteredQuotes.join("\n")}\n");
   }
+
+  Color getLeaderboardEntryBgColor(BuildContext context, int index) {
+    switch (index) {
+      case 0:
+        return Colors.yellow.shade300; // 1st place
+      case 1:
+        return Colors.grey.shade300;   // 2nd place
+      case 2:
+        return Colors.brown.shade300;  // 3rd place
+      default:
+        return Theme.of(context).cardColor; // default for all other entries
+    }
+  }
+
+  Color getLeaderboardEntryFgColor(BuildContext context, int index) {
+    switch (index) {
+      case 0:
+        return Colors.black; // 1st place
+      case 1:
+        return Colors.black;   // 2nd place
+      case 2:
+        return Colors.black;  // 3rd place
+      default:
+        return Colors.white; // default for all other entries
+    }
+  }
 }