fix: improve FilePersistenceService code quality and security

wanshenmean

2026-03-13 efbfb630f60f6663deba83ec12c1fbf2f9bab183

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace WIDESEAWCS_Core
{
    public interface IDependency
    {
    }
}