fix: mark unused parameters to satisfy unparam linter

Mark intentionally unused parameters with underscore to:
- Silence unparam warnings for legitimate unused parameters
- Keep function signatures intact for API compatibility
- Remove unused req from serveChecksum helper

internal/alerts/alerts.go

@@ -6839,7 +6839,7 @@ func calculateTrimmedBaseline(samples []float64) (baseline float64, trustworthy
 }
 
 // checkPMGAnomalies detects spam/virus rate anomalies using trimmed baseline
-func (m *Manager) checkPMGAnomalies(pmg models.PMGInstance, defaults PMGThresholdConfig) {
+func (m *Manager) checkPMGAnomalies(pmg models.PMGInstance, _ PMGThresholdConfig) {
 	// Need mail count data
 	if len(pmg.MailCount) == 0 {
 		return

internal/api/config_handlers.go

@@ -5997,7 +5997,7 @@ func (h *ConfigHandlers) HandleAutoRegister(w http.ResponseWriter, r *http.Reque
 }
 
 // handleSecureAutoRegister handles the new secure registration flow where Pulse generates the token
-func (h *ConfigHandlers) handleSecureAutoRegister(w http.ResponseWriter, r *http.Request, req *AutoRegisterRequest, clientIP string) {
+func (h *ConfigHandlers) handleSecureAutoRegister(w http.ResponseWriter, _ *http.Request, req *AutoRegisterRequest, clientIP string) {
 	log.Info().
 		Str("type", req.Type).
 		Str("host", req.Host).

internal/api/diagnostics.go

@@ -1451,7 +1451,7 @@ func normalizeVersionLabel(raw string) string {
 }
 
 // checkVMDiskMonitoring performs diagnostic checks for VM disk monitoring
-func (r *Router) checkVMDiskMonitoring(ctx context.Context, client *proxmox.Client, nodeName string) *VMDiskCheckResult {
+func (r *Router) checkVMDiskMonitoring(ctx context.Context, client *proxmox.Client, _ string) *VMDiskCheckResult {
 	result := &VMDiskCheckResult{
 		Recommendations: []string{},
 		Permissions:     []string{},
@@ -1716,7 +1716,7 @@ func (r *Router) checkVMDiskMonitoring(ctx context.Context, client *proxmox.Clie
 }
 
 // checkPhysicalDisks performs diagnostic checks for physical disk detection
-func (r *Router) checkPhysicalDisks(ctx context.Context, client *proxmox.Client, instanceName string) *PhysicalDiskCheck {
+func (r *Router) checkPhysicalDisks(ctx context.Context, client *proxmox.Client, _ string) *PhysicalDiskCheck {
 	result := &PhysicalDiskCheck{
 		Recommendations: []string{},
 		NodeResults:     []NodeDiskResult{},

internal/api/router.go

@@ -3591,7 +3591,7 @@ func (r *Router) tryServeHostAgentBinary(w http.ResponseWriter, req *http.Reques
 			checkedPaths = append(checkedPaths, path)
 			if info, err := os.Stat(path); err == nil && !info.IsDir() {
 				if strings.HasSuffix(req.URL.Path, ".sha256") {
-					r.serveChecksum(w, req, path)
+					r.serveChecksum(w, path)
 					return checkedPaths, true
 				}
 				http.ServeFile(w, req, path)
@@ -3663,7 +3663,7 @@ func sortedHostAgentKeys(missing map[string]agentbinaries.HostAgentBinary) []str
 }
 
 // serveChecksum computes and serves the SHA256 checksum of a file
-func (r *Router) serveChecksum(w http.ResponseWriter, req *http.Request, filepath string) {
+func (r *Router) serveChecksum(w http.ResponseWriter, filepath string) {
 	file, err := os.Open(filepath)
 	if err != nil {
 		http.Error(w, "Failed to open file", http.StatusInternalServerError)

internal/api/security_oidc.go

@@ -21,7 +21,7 @@ func (r *Router) handleOIDCConfig(w http.ResponseWriter, req *http.Request) {
 	}
 }
 
-func (r *Router) handleGetOIDCConfig(w http.ResponseWriter, req *http.Request) {
+func (r *Router) handleGetOIDCConfig(w http.ResponseWriter, _ *http.Request) {
 	cfg := r.ensureOIDCConfig()
 
 	response := makeOIDCResponse(cfg, r.config.PublicURL)

internal/api/system_settings.go

@@ -119,7 +119,7 @@ func discoveryConfigMap(raw map[string]interface{}) (map[string]interface{}, boo
 }
 
 // validateSystemSettings validates settings before applying them
-func validateSystemSettings(settings *config.SystemSettings, rawRequest map[string]interface{}) error {
+func validateSystemSettings(_ *config.SystemSettings, rawRequest map[string]interface{}) error {
 	if val, ok := rawRequest["pvePollingInterval"]; ok {
 		if interval, ok := val.(float64); ok {
 			if interval <= 0 {

internal/dockeragent/agent.go

@@ -1020,7 +1020,7 @@ func (a *Agent) sendReport(ctx context.Context, report agentsdocker.Report) erro
 	return nil
 }
 
-func (a *Agent) sendReportToTarget(ctx context.Context, target TargetConfig, payload []byte, containerCount int) error {
+func (a *Agent) sendReportToTarget(ctx context.Context, target TargetConfig, payload []byte, _ int) error {
 	url := fmt.Sprintf("%s/api/agents/docker/report", target.URL)
 	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(payload))
 	if err != nil {

internal/monitoring/monitor.go

@@ -624,7 +624,6 @@ func safePercentage(used, total float64) float64 {
 	return result
 }
 
-
 // safeFloat ensures a float value is not NaN or Inf
 func safeFloat(val float64) float64 {
 	if math.IsNaN(val) || math.IsInf(val, 0) {
@@ -4572,7 +4571,7 @@ func (m *Monitor) retryFailedConnections(ctx context.Context) {
 }
 
 // poll fetches data from all configured instances
-func (m *Monitor) poll(ctx context.Context, wsHub *websocket.Hub) {
+func (m *Monitor) poll(_ context.Context, wsHub *websocket.Hub) {
 	defer recoverFromPanic("poll")
 
 	// Limit concurrent polls to 2 to prevent resource exhaustion
@@ -4788,7 +4787,7 @@ func derivePollTimeout(cfg *config.Config) time.Duration {
 	return timeout
 }
 
-func (m *Monitor) taskExecutionTimeout(instanceType InstanceType) time.Duration {
+func (m *Monitor) taskExecutionTimeout(_ InstanceType) time.Duration {
 	if m == nil {
 		return defaultTaskTimeout
 	}