biome.json with the ruleset used by next-forge: turn off noNodejsModules, noCommonJs, noSecrets, useConsistentCurlyBraces, noNamespaceImport, useNamingConvention, noArrayIndexKey, noBarrelFile, and noReExportAll; configure useSortedClasses with className/clsx/cva/tw/twMerge/cn/twJoin recognition and a safe auto-fix