feat(dashboard): refine activity telemetry and maps

apps/web/src/lib/admin-metrics.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { fillDailySeries } from "./admin-metrics";
+import { fillDailySeries, mergeRiskActivity } from "./admin-metrics";
 
 describe("admin dashboard metrics", () => {
   it("fills missing UTC registration days with zero", () => {
@@ -13,4 +13,20 @@ describe("admin dashboard metrics", () => {
       { day: "2026-08-01", count: 1 },
     ]);
   });
+
+  it("merges complete per-user VPN summaries with each user's latest observation", () => {
+    const latest = [
+      { userId: "user-2", classification: "tor", observedAt: new Date("2026-08-01T11:00:00Z") },
+      { userId: "user-1", classification: "proxy", observedAt: new Date("2026-08-01T12:00:00Z") },
+    ];
+    const summaries = [
+      { userId: "user-1", count: 2000, classifications: ["proxy", "vpn"], sources: ["game", "web"] },
+      { userId: "user-2", count: 1, classifications: ["tor"], sources: ["web"] },
+    ];
+
+    expect(mergeRiskActivity(latest, summaries)).toEqual([
+      expect.objectContaining({ userId: "user-1", count: 2000, classification: "proxy", classifications: ["proxy", "vpn"], sources: ["game", "web"] }),
+      expect.objectContaining({ userId: "user-2", count: 1, classification: "tor" }),
+    ]);
+  });
 });