Add web auth, infinite-scroll, agent admission and review fixes across agent/server/web

agent/internal/metrics/metrics_test.go

@@ -14,6 +14,7 @@ func TestMetricsExposeRegistered(t *testing.T) {
 	m := New()
 	m.CheckRuns.WithLabelValues("c1", "ok").Inc()
 	m.SpoolDepth.Set(7)
+	m.EventsChannelFull.Inc()
 	srv := httptest.NewServer(promhttp.HandlerFor(m.Registry, promhttp.HandlerOpts{}))
 	defer srv.Close()
 	resp, err := http.Get(srv.URL)
@@ -26,6 +27,7 @@ func TestMetricsExposeRegistered(t *testing.T) {
 	for _, want := range []string{
 		`monlet_agent_check_runs_total{check_id="c1",status="ok"} 1`,
 		`monlet_agent_spool_events 7`,
+		`monlet_agent_events_channel_full_total 1`,
 	} {
 		if !strings.Contains(s, want) {
 			t.Errorf("missing %q in output", want)