chore: 优化代码注释

src/Infrastructure/TakeoutSaaS.Infrastructure/Identity/Persistence/IdentityDbContext.cs

@@ -1,4 +1,3 @@
-using System;
 using System.Linq;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
@@ -11,12 +10,8 @@ namespace TakeoutSaaS.Infrastructure.Identity.Persistence;
 /// <summary>
 /// 身份认证 DbContext。
 /// </summary>
-public sealed class IdentityDbContext : DbContext
+public sealed class IdentityDbContext(DbContextOptions<IdentityDbContext> options) : DbContext(options)
 {
-    public IdentityDbContext(DbContextOptions<IdentityDbContext> options)
-        : base(options)
-    {
-    }
 
     public DbSet<IdentityUser> IdentityUsers => Set<IdentityUser>();
     public DbSet<MiniUser> MiniUsers => Set<MiniUser>();
@@ -37,11 +32,11 @@ public sealed class IdentityDbContext : DbContext
         builder.Property(x => x.Avatar).HasMaxLength(256);
 
         var converter = new ValueConverter<string[], string>(
-            v => string.Join(',', v ?? Array.Empty<string>()),
+            v => string.Join(',', v),
             v => string.IsNullOrWhiteSpace(v) ? Array.Empty<string>() : v.Split(',', StringSplitOptions.RemoveEmptyEntries));
 
         var comparer = new ValueComparer<string[]>(
-            (l, r) => l!.SequenceEqual(r!),
+            (l, r) => (l == null && r == null) || (l != null && r != null && Enumerable.SequenceEqual(l, r)),
             v => v.Aggregate(0, (current, item) => HashCode.Combine(current, item.GetHashCode())),
             v => v.ToArray());