feat(anomalies): filter the feed by detector kind

Adds a detector-kind chip row to the anomaly feed (SuspensionFlip / SteamMove /
SuspensionFreeze / OverroundCompression), multi-select like the sport filter — so
with four detectors live you can slice the feed to a single signal type. The kind
set lives on AnomalyFilter and filters in-memory alongside severity/sport, persisted
via AnomalyBrowsingState like the other filters.

- AnomalyFilter.Kinds + AnomalyBrowsingService in-memory Where clause; feed chip
  row + ToggleKind/KindLabel; en/ru resx (Anomaly.Filter.Kind).
- 2 tests: kind-filtered subset + no-filter returns all kinds.

src/Marathon.UI/Pages/Anomalies/AnomalyFeed.razor

@@ -82,6 +82,23 @@
             </div>
         }
 
+        <div class="m-list-toolbar__row m-list-toolbar__chips">
+            <span class="m-list-toolbar__label">@L["Anomaly.Filter.Kind"]</span>
+            @foreach (var kind in _kindOptions)
+            {
+                var localKind = kind;
+                var active = _filter.Kinds is { Count: > 0 } ks && ks.Contains(localKind);
+                <button type="button"
+                        class="m-chip @(active ? "is-active" : null)"
+                        aria-pressed="@active"
+                        data-test="kind-chip"
+                        data-kind="@localKind"
+                        @onclick="() => ToggleKind(localKind)">
+                    @KindLabel(localKind)
+                </button>
+            }
+        </div>
+
         <div class="m-list-toolbar__row">
             <div class="m-list-toolbar__group">
                 <label class="m-list-toolbar__label">@L["Anomaly.Filter.From"]</label>
@@ -178,6 +195,9 @@
     private static readonly AnomalySeverity[] _severityOptions =
         { AnomalySeverity.Low, AnomalySeverity.Medium, AnomalySeverity.High };
 
+    private static readonly AnomalyKind[] _kindOptions =
+        { AnomalyKind.SuspensionFlip, AnomalyKind.SteamMove, AnomalyKind.SuspensionFreeze, AnomalyKind.OverroundCompression };
+
     private List<AnomalyListItem> _items = new();
     private IReadOnlyList<int> _availableSports = Array.Empty<int>();
     private bool _loading = true;
@@ -251,6 +271,22 @@
         return UpdateFilter(_filter with { SportCodes = existing.Count == 0 ? null : existing });
     }
 
+    private Task ToggleKind(AnomalyKind kind)
+    {
+        var existing = _filter.Kinds?.ToList() ?? new List<AnomalyKind>();
+        if (!existing.Remove(kind)) existing.Add(kind);
+        return UpdateFilter(_filter with { Kinds = existing.Count == 0 ? null : existing });
+    }
+
+    private string KindLabel(AnomalyKind kind) => kind switch
+    {
+        AnomalyKind.SuspensionFlip       => L["Anomaly.Kind.SuspensionFlip"],
+        AnomalyKind.SteamMove            => L["Anomaly.Kind.SteamMove"],
+        AnomalyKind.SuspensionFreeze     => L["Anomaly.Kind.SuspensionFreeze"],
+        AnomalyKind.OverroundCompression => L["Anomaly.Kind.OverroundCompression"],
+        _                                => kind.ToString(),
+    };
+
     private async Task OnFromChanged(ChangeEventArgs e)
     {
         if (DateTimeOffset.TryParse(e.Value?.ToString(), out var v))