fix: stabilize software updates

internal/updateagent/controller.go

@@ -69,7 +69,6 @@ func (c *Controller) updateHandler(w http.ResponseWriter, r *http.Request) {
 	request.Version = strings.TrimSpace(request.Version)
 	request.CurrentVersion = strings.TrimSpace(request.CurrentVersion)
 	request.RegistryUsername = strings.TrimSpace(request.RegistryUsername)
-	request.RegistryToken = strings.TrimSpace(request.RegistryToken)
 	if !updateprotocol.ValidVersion(request.Version) || !updateprotocol.ValidVersion(request.CurrentVersion) || request.RegistryUsername == "" || len(request.RegistryUsername) > 128 || len(request.RegistryToken) < 8 || len(request.RegistryToken) > 1024 {
 		http.Error(w, "invalid update request", http.StatusBadRequest)
 		return
@@ -99,12 +98,12 @@ func (c *Controller) run(request updateprotocol.Request) {
 	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Minute)
 	defer cancel()
 	err := c.runner.Update(ctx, request, c.setPhase)
-	registryToken := request.RegistryToken
+	registryCredential := request.RegistryToken
 	request.RegistryToken = ""
 	if err != nil {
 		message := publicAgentError(err)
 		c.setPhase(updateprotocol.PhaseFailed, message)
-		c.logger.Error("software update failed", "version", request.Version, "error", redactSecret(err, registryToken))
+		c.logger.Error("software update failed", "version", request.Version, "error", redactSecret(err, registryCredential))
 		return
 	}
 	c.setPhase(updateprotocol.PhaseComplete, "Update erfolgreich installiert")