refactor(gateway): remove unused device auth normalizer

vincentkoc · vincentkoc · commit 25090056dc22 · 2026-06-23T01:50:57.000+08:00
diff --git a/src/gateway/device-metadata-normalization.ts b/src/gateway/device-metadata-normalization.ts
@@ -7,21 +7,6 @@ function normalizeTrimmedMetadata(value?: string | null): string {
   return trimmed ? trimmed : "";
 }
 
-function toLowerAscii(input: string): string {
-  return input.replace(/[A-Z]/g, (char) => String.fromCharCode(char.charCodeAt(0) + 32));
-}
-
-/** Normalize device metadata for cross-runtime auth comparisons. */
-export function normalizeDeviceMetadataForAuth(value?: string | null): string {
-  const trimmed = normalizeTrimmedMetadata(value);
-  if (!trimmed) {
-    return "";
-  }
-  // Keep cross-runtime normalization deterministic (TS/Swift/Kotlin) by only
-  // lowercasing ASCII metadata fields used in auth payloads.
-  return toLowerAscii(trimmed);
-}
-
 /** Normalize device metadata for policy classification. */
 export function normalizeDeviceMetadataForPolicy(value?: string | null): string {
   const trimmed = normalizeTrimmedMetadata(value);
