fix(frontend): remove duplicate credential handler functions in settings page

frontend/src/app/dashboard/settings/page.tsx

@@ -92,29 +92,7 @@ export default function SettingsPage() {
         }
     }
 
-    const handleOpenCredentialDialog = (serviceName: string) => {
-        setSelectedService(serviceName)
-        setCredentialPayload("")
-        setShowPassword(false)
-        setIsDialogOpen(true)
-    }
 
-    const handleSaveCredential = async () => {
-        if (!selectedService || !credentialPayload) return
-
-        setSaving(true)
-        try {
-            await credentialsApi.save(selectedService, credentialPayload)
-            toast.success(`Credentials for ${selectedService} saved`)
-            setIsDialogOpen(false)
-            fetchCredentials() // Refresh list
-        } catch (error) {
-            console.error("Failed to save credential", error)
-            toast.error("Failed to save credential")
-        } finally {
-            setSaving(false)
-        }
-    }
 
     const handleDeleteCredential = async (serviceName: string) => {
         if (!confirm(`Are you sure you want to remove credentials for ${serviceName}?`)) return