Fix Vitest suite and wire cloud/AWS dashboard API helpers.

Adds missing client methods, VPC seeder badges, hospice strain UI, and uiHelp drift keys so server/web builds and all 849 Vitest tests pass.

server/internal/api/fleet_torrent_test.go

@@ -85,6 +85,30 @@ func TestAuthSubnetPrimarySeederHint(t *testing.T) {
 	}
 }
 
+func TestFleetTorrentGossipSameVPCScope(t *testing.T) {
+	database, err := db.New(t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = database.Close() })
+	hub := NewWSHub(database)
+	hub.SetServerPolicy(ServerPolicy{FleetTorrentEnabled: true})
+	hub.storeAgentCloudMeta("vpc-a", CloudInstanceMeta{VpcID: "vpc-42", Region: "us-east-1"})
+	hub.storeAgentCloudMeta("vpc-b", CloudInstanceMeta{VpcID: "vpc-42", Region: "us-east-1"})
+	_ = database.UpsertAgent(&models.Agent{ID: "vpc-a", Name: "a", IP: "10.10.1.1", Status: "online"})
+	_ = database.UpsertAgent(&models.Agent{ID: "vpc-b", Name: "b", IP: "10.20.2.2", Status: "online"})
+
+	if scope := primarySeederScope("10.10.1.1", hub.agentCloudMetaLocked("vpc-a")); scope != "vpc-42" {
+		t.Fatalf("scope=%q", scope)
+	}
+	if !hub.agentMatchesPrimaryScopeLocked("vpc-a", "vpc-42") {
+		t.Fatal("expected vpc-a in vpc-42")
+	}
+	if hub.agentMatchesPrimaryScopeLocked("vpc-b", "vpc-99") {
+		t.Fatal("expected vpc-b mismatch on other vpc")
+	}
+}
+
 func TestSubnetPrimarySeederElection(t *testing.T) {
 	database, err := db.New(t.TempDir())
 	if err != nil {