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/certificates/BulkDeployDialog.tsx

@@ -56,7 +56,7 @@ export function BulkDeployDialog({
     queryKey: ['devices-for-cert', tenantId],
     queryFn: async () => {
       const result = await devicesApi.list(tenantId)
-      return (result as any).items ?? result
+      return (result as { items?: DeviceResponse[] }).items ?? (result as DeviceResponse[])
     },
     enabled: !!tenantId && open,
   })
@@ -128,14 +128,15 @@ export function BulkDeployDialog({
           variant: 'destructive',
         })
       }
-    } catch (e: any) {
+    } catch (e: unknown) {
+      const err = e as { response?: { data?: { detail?: string } } }
       setResult({
         success: 0,
         failed: selected.size,
         errors: [
           {
             device_id: 'bulk',
-            error: e?.response?.data?.detail || 'Bulk deployment failed',
+            error: err?.response?.data?.detail || 'Bulk deployment failed',
           },
         ],
       })

frontend/src/components/certificates/CAStatusCard.tsx

@@ -36,11 +36,13 @@ export function CAStatusCard({ ca, canWrite: writable, tenantId }: CAStatusCardP
       void queryClient.invalidateQueries({ queryKey: ['ca'] })
       toast({ title: 'Certificate Authority initialized' })
     },
-    onError: (e: any) =>
+    onError: (e: unknown) => {
+      const err = e as { response?: { data?: { detail?: string } } }
       toast({
-        title: e?.response?.data?.detail || 'Failed to initialize CA',
+        title: err?.response?.data?.detail || 'Failed to initialize CA',
         variant: 'destructive',
-      }),
+      })
+    },
   })
 
   const handleDownloadPEM = async () => {

frontend/src/components/certificates/CertConfirmDialog.tsx

@@ -43,6 +43,7 @@ export function CertConfirmDialog({
   // Reset confirm text when dialog opens/closes or action changes
   useEffect(() => {
     if (open) {
+      // eslint-disable-next-line react-hooks/set-state-in-effect
       setConfirmText('')
     }
   }, [open, action])

frontend/src/components/certificates/CertificatesPage.tsx

@@ -9,11 +9,7 @@
 import { useQuery } from '@tanstack/react-query'
 import { useUIStore } from '@/lib/store'
 import { Shield, Building2 } from 'lucide-react'
-import {
-  certificatesApi,
-  type CAResponse,
-  type DeviceCertResponse,
-} from '@/lib/certificatesApi'
+import { certificatesApi } from '@/lib/certificatesApi'
 import { useAuth, isSuperAdmin } from '@/lib/auth'
 import { canWrite } from '@/lib/auth'
 import { CAStatusCard } from './CAStatusCard'

frontend/src/components/certificates/DeployCertDialog.tsx

@@ -58,7 +58,7 @@ export function DeployCertDialog({
     queryFn: async () => {
       const result = await devicesApi.list(tenantId)
       // The list endpoint returns { items, total, ... } or an array
-      return (result as any).items ?? result
+      return (result as { items?: DeviceResponse[] }).items ?? (result as DeviceResponse[])
     },
     enabled: !!tenantId && open,
   })
@@ -110,9 +110,10 @@ export function DeployCertDialog({
         setErrorMsg(result.error ?? 'Deployment failed')
         toast({ title: result.error ?? 'Deployment failed', variant: 'destructive' })
       }
-    } catch (e: any) {
+    } catch (e: unknown) {
       setStep('error')
-      const detail = e?.response?.data?.detail || 'Failed to deploy certificate'
+      const err = e as { response?: { data?: { detail?: string } } }
+      const detail = err?.response?.data?.detail || 'Failed to deploy certificate'
       setErrorMsg(detail)
       toast({ title: detail, variant: 'destructive' })
     }

frontend/src/components/certificates/DeviceCertTable.tsx

@@ -7,7 +7,6 @@ import { useState } from 'react'
 import { useMutation, useQueryClient } from '@tanstack/react-query'
 import {
   ShieldCheck,
-  ShieldAlert,
   Plus,
   Layers,
   MoreHorizontal,
@@ -132,11 +131,13 @@ export function DeviceCertTable({
         toast({ title: result.error ?? 'Deployment failed', variant: 'destructive' })
       }
     },
-    onError: (e: any) =>
+    onError: (e: unknown) => {
+      const err = e as { response?: { data?: { detail?: string } } }
       toast({
-        title: e?.response?.data?.detail || 'Failed to deploy certificate',
+        title: err?.response?.data?.detail || 'Failed to deploy certificate',
         variant: 'destructive',
-      }),
+      })
+    },
   })
 
   const rotateMutation = useMutation({
@@ -149,11 +150,13 @@ export function DeviceCertTable({
         toast({ title: result.error ?? 'Rotation failed', variant: 'destructive' })
       }
     },
-    onError: (e: any) =>
+    onError: (e: unknown) => {
+      const err = e as { response?: { data?: { detail?: string } } }
       toast({
-        title: e?.response?.data?.detail || 'Failed to rotate certificate',
+        title: err?.response?.data?.detail || 'Failed to rotate certificate',
         variant: 'destructive',
-      }),
+      })
+    },
   })
 
   const revokeMutation = useMutation({
@@ -162,11 +165,13 @@ export function DeviceCertTable({
       void queryClient.invalidateQueries({ queryKey: ['deviceCerts'] })
       toast({ title: 'Certificate revoked' })
     },
-    onError: (e: any) =>
+    onError: (e: unknown) => {
+      const err = e as { response?: { data?: { detail?: string } } }
       toast({
-        title: e?.response?.data?.detail || 'Failed to revoke certificate',
+        title: err?.response?.data?.detail || 'Failed to revoke certificate',
         variant: 'destructive',
-      }),
+      })
+    },
   })
 
   // ── Filtering ──