// Optional UI preferences must never prevent the workspace from opening.
export function readWorkspacePreferences(key: string): Record<string, string> {
  try {
    const value: unknown = JSON.parse(localStorage.getItem(key) ?? "{}");
    if (!value || typeof value !== "object" || Array.isArray(value)) return {};
    return Object.fromEntries(Object.entries(value).filter((entry): entry is [string, string] => typeof entry[1] === "string"));
  } catch { return {}; }
}

export function writeWorkspacePreferences(key: string, value: Record<string, string>) {
  try { localStorage.setItem(key, JSON.stringify(value)); } catch { /* Storage may be unavailable or full. */ }
}