saveCachedServerTools method
Saves cached tools list for a server ID.
Implementation
@override
Future<void> saveCachedServerTools(
String serverId,
List<MCPTool> tools,
) async {
final prefs = await _instance;
final list = tools.map((t) => t.toJson()).toList();
await prefs.setString('${_kCachedServerTools}_$serverId', jsonEncode(list));
}