unify pipeline, load friends leaderboard from homepage data

lib/objects/objects.dart

@@ -350,6 +350,7 @@ class HomepageStats {
   final List<YearlyMileage> yearlyMileage;
   final List<LocoSummary> topLocos;
   final List<LeaderboardEntry> leaderboard;
+  final List<LeaderboardEntry> friendsLeaderboard;
   final List<TripSummary> trips;
   final int legCount;
   final UserData? user;
@@ -359,6 +360,7 @@ class HomepageStats {
     required this.yearlyMileage,
     required this.topLocos,
     required this.leaderboard,
+    required this.friendsLeaderboard,
     required this.trips,
     required this.legCount,
     this.user,
@@ -370,6 +372,17 @@ class HomepageStats {
     final totalMileage = mileageData is Map && mileageData['mileage'] != null
         ? (mileageData['mileage'] as num).toDouble()
         : 0.0;
+    List<LeaderboardEntry> parseLeaderboard(dynamic raw) {
+      if (raw is List) {
+        return raw
+            .whereType<Map>()
+            .map((e) => LeaderboardEntry.fromJson(
+                  e.map((k, v) => MapEntry(k.toString(), v)),
+                ))
+            .toList();
+      }
+      return const [];
+    }
     return HomepageStats(
       totalMileage: totalMileage,
       yearlyMileage: (json['yearly_mileage'] as List? ?? [])
@@ -378,9 +391,9 @@ class HomepageStats {
       topLocos: (json['top_locos'] as List? ?? [])
           .map((e) => LocoSummary.fromJson(e))
           .toList(),
-      leaderboard: (json['leaderboard_data'] as List? ?? [])
-          .map((e) => LeaderboardEntry.fromJson(e))
-          .toList(),
+      leaderboard: parseLeaderboard(json['leaderboard_data'] ?? json['leaderboard']),
+      friendsLeaderboard:
+          parseLeaderboard(json['friends_leaderboard'] ?? json['friendsLeaderboard']),
       trips: (json['trip_data'] as List? ?? [])
           .map((e) => TripSummary.fromJson(e))
           .toList(),