Function isValidCacheEntry

src/utils/cache.ts:97–107

* Validate that a parsed object has the shape of a CacheEntry. * Guards against truncated writes, schema changes, or manual edits.

(value: unknown)

 * Guards against truncated writes, schema changes, or manual edits.
 */
function isValidCacheEntry(value: unknown): value is CacheEntry {
  if (typeof value !== 'object' || value === null) return false;
  const obj = value as Record<string, unknown>;
  return (
    typeof obj.endpoint === 'string' &&
    typeof obj.url === 'string' &&
    typeof obj.cachedAt === 'string' &&
    typeof obj.data === 'object' &&
    obj.data !== null
  );
}

/**
 * Safely remove a cache file (e.g. when it's corrupted).