fix(lint): resolve remaining ESLint errors (unused vars, any types, react-refresh)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/network/ClientsTab.tsx

@@ -162,7 +162,7 @@ export function ClientsTab({ tenantId, deviceId, active }: ClientsTabProps) {
       }
       return sortDir === 'asc' ? cmp : -cmp
     })
-  }, [data?.clients, searchQuery, sortField, sortDir])
+  }, [data, searchQuery, sortField, sortDir])
 
   // Stats
   const totalClients = data?.clients.length ?? 0

frontend/src/components/network/InterfaceGauges.tsx

@@ -53,7 +53,7 @@ interface GaugeBarProps {
   direction: 'RX' | 'TX'
 }
 
-function GaugeBar({ label, value, maxSpeed, direction }: GaugeBarProps) {
+function GaugeBar({ value, maxSpeed, direction }: GaugeBarProps) {
   const pct = Math.min((value / maxSpeed) * 100, 100)
   const colorClass = getBarColor(pct)
 

frontend/src/components/network/TopologyMap.tsx

@@ -149,7 +149,7 @@ interface TooltipData {
   y: number
 }
 
-function NodeTooltip({ data, onClose }: { data: TooltipData; onClose: () => void }) {
+function NodeTooltip({ data }: { data: TooltipData; onClose?: () => void }) {
   return (
     <div
       className="absolute z-50 rounded-lg border border-border bg-elevated shadow-lg px-3 py-2 text-xs pointer-events-none"