fix(app): harden account and workflow state

job-tracker-ui/src/auth.ts

@@ -72,6 +72,11 @@ export function getAuthUserKey(): string {
   return safeGet(window.localStorage, AUTH_USER_KEY) ?? "anon";
 }
 
+export function getUserScopedStorageKey(baseKey: string, userKey = getAuthUserKey()): string {
+  const normalizedUser = userKey.trim() || "anon";
+  return `${baseKey}:${encodeURIComponent(normalizedUser)}`;
+}
+
 export function setAuthUserKey(value: string | null | undefined, emit = true) {
   const previous = getAuthUserKey();
   const next = typeof value === "string" ? value.trim() : "";