feat(messages): sort group read status — read (earliest first), unread (alphabetical)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

static/js/conversations.js

@@ -652,6 +652,15 @@
 
                 if (isGroup) {
                     // Group: show per-member read status
+                    // Sort: read (earliest first), then unread (alphabetically)
+                    otherMembers.sort(function (a, b) {
+                        var aRead = a.last_read_at && new Date(a.last_read_at) >= msgTime;
+                        var bRead = b.last_read_at && new Date(b.last_read_at) >= msgTime;
+                        if (aRead && !bRead) return -1;
+                        if (!aRead && bRead) return 1;
+                        if (aRead && bRead) return new Date(a.last_read_at) - new Date(b.last_read_at);
+                        return (a.name || '').localeCompare(b.name || '', 'pl');
+                    });
                     var lines = [];
                     otherMembers.forEach(function (m) {
                         var name = m.name || 'Użytkownik';

templates/messages/conversations.html

@@ -228,7 +228,7 @@ window.__CSRF_TOKEN__ = '{{ csrf_token() }}';
 // Load conversations.js after data is set
 (function() {
     var s = document.createElement('script');
-    s.src = '{{ url_for("static", filename="js/conversations.js") }}?v=16';
+    s.src = '{{ url_for("static", filename="js/conversations.js") }}?v=17';
     document.body.appendChild(s);
 })();
 {% endblock %}