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/fleet/AdoptionWizard.tsx

@@ -8,7 +8,7 @@
  * Step 5: Import & Verify (bulk-add, then check connectivity)
  */
 
-import { useState, useCallback, useEffect } from 'react'
+import { useState, useCallback } from 'react'
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import { useNavigate } from '@tanstack/react-router'
 import {
@@ -31,8 +31,6 @@ import {
   type SubnetScanResponse,
   type SubnetScanResult,
   type DeviceResponse,
-  type DeviceGroupResponse,
-  type DeviceTagResponse,
 } from '@/lib/api'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'

frontend/src/components/fleet/RemoteWinBoxButton.tsx

@@ -32,7 +32,9 @@ export function RemoteWinBoxButton({ tenantId, deviceId }: RemoteWinBoxButtonPro
         (s) => s.status === 'active' || s.status === 'creating',
       )
       if (active) {
+        // eslint-disable-next-line react-hooks/set-state-in-effect
         setSession(active)
+        // eslint-disable-next-line react-hooks/set-state-in-effect
         setState(active.status === 'active' ? 'active' : 'connecting')
       }
     }
@@ -66,6 +68,7 @@ export function RemoteWinBoxButton({ tenantId, deviceId }: RemoteWinBoxButtonPro
   // Countdown timer for session expiry
   useEffect(() => {
     if (state !== 'active' || !session?.expires_at) {
+      // eslint-disable-next-line react-hooks/set-state-in-effect
       setCountdown(null)
       return
     }
@@ -96,9 +99,10 @@ export function RemoteWinBoxButton({ tenantId, deviceId }: RemoteWinBoxButtonPro
         setState('connecting')
       }
     },
-    onError: (err: any) => {
+    onError: (err: unknown) => {
+      const e = err as { response?: { data?: { detail?: string } } }
       setState('failed')
-      setError(err.response?.data?.detail || 'Failed to create session')
+      setError(e.response?.data?.detail || 'Failed to create session')
     },
   })
 
@@ -113,9 +117,10 @@ export function RemoteWinBoxButton({ tenantId, deviceId }: RemoteWinBoxButtonPro
       setError(null)
       queryClient.invalidateQueries({ queryKey: ['remote-winbox-sessions', tenantId, deviceId] })
     },
-    onError: (err: any) => {
+    onError: (err: unknown) => {
+      const e = err as { response?: { data?: { detail?: string } } }
       setState('failed')
-      setError(err.response?.data?.detail || 'Failed to close session')
+      setError(e.response?.data?.detail || 'Failed to close session')
     },
   })
 
@@ -130,12 +135,6 @@ export function RemoteWinBoxButton({ tenantId, deviceId }: RemoteWinBoxButtonPro
     closeMutation.mutate()
   }, [closeMutation])
 
-  const handleRetry = useCallback(() => {
-    setSession(null)
-    setError(null)
-    handleOpen()
-  }, [handleOpen])
-
   const handleReset = useCallback(async () => {
     try {
       const sessions = await remoteWinboxApi.list(tenantId, deviceId)

frontend/src/components/fleet/WinBoxButton.tsx

@@ -32,9 +32,10 @@ export function WinBoxButton({ tenantId, deviceId }: WinBoxButtonProps) {
                 window.open(data.winbox_uri, '_blank')
             }
         },
-        onError: (err: any) => {
+        onError: (err: unknown) => {
+            const e = err as { response?: { data?: { detail?: string } } }
             setState('error')
-            setError(err.response?.data?.detail || 'Failed to open tunnel')
+            setError(e.response?.data?.detail || 'Failed to open tunnel')
         },
     })