test: io.Discard logger in fix-3 tests

controller/internal/web/deadapp_alert_test.go

@@ -1,6 +1,7 @@
 package web
 
 import (
+	"io"
 	"log"
 	"strings"
 	"testing"
@@ -10,7 +11,7 @@ import (
 // clears it. COMPANION red-proof: skip SetDeadAppAlerts entirely (the pre-fix-3 silence) → GetAlerts
 // has no dead-app banner → the "not fut" assertion fails.
 func TestDeadAppAlerts_PresentAndSelfClearing(t *testing.T) {
-	am := NewAlertManager(log.New(nil, "", 0))
+	am := NewAlertManager(log.New(io.Discard, "", 0))
 
 	am.SetDeadAppAlerts([]DeadApp{{Name: "cwa", DisplayName: "Calibre-Web", State: "stopped"}})
 	got := am.GetAlerts()
@@ -31,7 +32,7 @@ func TestDeadAppAlerts_PresentAndSelfClearing(t *testing.T) {
 // Above the group threshold, many dead apps collapse to ONE grouped banner (a reboot storm must not
 // paper the dashboard).
 func TestDeadAppAlerts_GroupedAboveThreshold(t *testing.T) {
-	am := NewAlertManager(log.New(nil, "", 0))
+	am := NewAlertManager(log.New(io.Discard, "", 0))
 	var many []DeadApp
 	for _, n := range []string{"radarr", "jellyfin", "navidrome", "calibre", "seerr"} {
 		many = append(many, DeadApp{Name: n, DisplayName: n, State: "stopped"})