fix leaderboard formatting, save shared users to drafts, display shared legs

lib/components/legs/leg_card.dart

@@ -28,6 +28,8 @@ class _LegCardState extends State<LegCard> {
   Widget build(BuildContext context) {
     final leg = widget.leg;
     final isShared = leg.legShareId != null && leg.legShareId!.isNotEmpty;
+    final sharedFrom = leg.sharedFrom;
+    final sharedTo = leg.sharedTo;
     final distanceUnits = context.watch<DistanceUnitService>();
     final routeSegments = _parseRouteSegments(leg.route);
     final textTheme = Theme.of(context).textTheme;
@@ -198,16 +200,9 @@ class _LegCardState extends State<LegCard> {
                 ],
               ],
             ),
-            if (isShared) ...[
+            if (isShared || sharedFrom != null || (sharedTo.isNotEmpty)) ...[
               const SizedBox(width: 8),
-              Tooltip(
-                message: 'Shared entry',
-                child: Icon(
-                  Icons.share,
-                  size: 18,
-                  color: Theme.of(context).colorScheme.primary,
-                ),
-              ),
+              _SharedIcons(sharedFrom: sharedFrom, sharedTo: sharedTo, isShared: isShared),
             ],
             if (widget.showEditButton) ...[
               const SizedBox(width: 8),
@@ -461,3 +456,61 @@ class _LegCardState extends State<LegCard> {
     return route.map((e) => e.toString()).where((e) => e.trim().isNotEmpty).toList();
   }
 }
+
+class _SharedIcons extends StatelessWidget {
+  const _SharedIcons({
+    required this.sharedFrom,
+    required this.sharedTo,
+    required this.isShared,
+  });
+
+  final LegShareMeta? sharedFrom;
+  final List<LegShareMeta> sharedTo;
+  final bool isShared;
+
+  @override
+  Widget build(BuildContext context) {
+    final icons = <Widget>[];
+    if (isShared || sharedFrom != null) {
+      final fromName = sharedFrom?.sharedFromDisplay ?? '';
+      icons.add(
+        Tooltip(
+          message: fromName.isNotEmpty ? 'Shared from $fromName' : 'Shared entry',
+          child: Icon(
+            Icons.share,
+            size: 18,
+            color: Theme.of(context).colorScheme.primary,
+          ),
+        ),
+      );
+    }
+    if (sharedTo.isNotEmpty) {
+      final names = sharedTo
+          .map((s) => s.sharedToDisplay)
+          .where((name) => name.isNotEmpty)
+          .toList();
+      final tooltip = names.isEmpty
+          ? 'Shared to others'
+          : 'Shared to: ${names.join(', ')}';
+      icons.add(
+        Tooltip(
+          message: tooltip,
+          child: Icon(
+            Icons.group,
+            size: 18,
+            color: Theme.of(context).colorScheme.tertiary,
+          ),
+        ),
+      );
+    }
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        for (int i = 0; i < icons.length; i++) ...[
+          if (i > 0) const SizedBox(width: 6),
+          icons[i],
+        ],
+      ],
+    );
+  }
+}