clear method

@override Future<bool> clear()

Removes all values from the cache.

Returns true if cleared successfully

Implementation

@override
Future<bool> clear() async {
  await _ensureInitialized();

  // Remove all cache entries
  final keysToRemove = _prefs!
      .getKeys()
      .where(
        (key) =>
            key.startsWith(_keyPrefix) || key.startsWith(_metadataPrefix),
      )
      .toList();

  for (final key in keysToRemove) {
    await _prefs!.remove(key);
  }

  // Clear in-memory cache
  _metadataCache.clear();

  return true;
}