Added this stupid vibecoded app as a test

LaDOSE.Src/LaDOSE.WebApp/src/lib/api/statistics.ts

@@ -0,0 +1,29 @@
+import { session } from '$lib/stores/session.svelte';
+import { apiRequest, type RequestOptions } from './client';
+import type { MatchStatsDTO } from './schema-helpers';
+
+/** StatisticsController is `[Authorize]`, like the tournament endpoints. */
+function authed(options: RequestOptions): RequestOptions {
+	return { ...options, token: options.token ?? session.token };
+}
+
+/**
+ * POST /api/Statistics/Matches — set-level statistics (win/loss, games, head to
+ * head) for the given events, read from the `set` rows an import persisted.
+ *
+ * Unlike `GetResults` this takes every event in one call: the service tolerates
+ * brackets with no set rows instead of throwing, and reports what it could see in
+ * `coverage`. Always show that coverage — many older brackets were imported
+ * without sets, so a low `bracketsWithSets` means these numbers describe only a
+ * slice of the scope.
+ */
+export function getMatchStats(
+	eventIds: number[],
+	options: RequestOptions = {}
+): Promise<MatchStatsDTO> {
+	return apiRequest<MatchStatsDTO>('/api/Statistics/Matches', {
+		...authed(options),
+		method: 'POST',
+		body: eventIds
+	});
+}