♻️ Extract the Storage service to DysonNetwork.Drive microservice

DysonNetwork.Drive/Models/Account.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace DysonNetwork.Drive.Models;
+
+public class Account : ModelBase
+{
+    [Key]
+    public Guid Id { get; set; } = Guid.NewGuid();
+    
+    [Required]
+    [MaxLength(256)]
+    public string Username { get; set; } = null!;
+    
+    [Required]
+    [MaxLength(256)]
+    public string Email { get; set; } = null!;
+    
+    [MaxLength(1024)]
+    public string? DisplayName { get; set; }
+    
+    public bool IsActive { get; set; } = true;
+    public bool IsVerified { get; set; } = false;
+    
+    // Navigation properties
+    public virtual ICollection<CloudFile> Files { get; set; } = new List<CloudFile>();
+    
+    // Timestamps
+    public DateTimeOffset? LastLoginAt { get; set; }
+    
+    // Methods
+    public bool HasPermission(Permission permission)
+    {
+        // TODO: Implement actual permission checking logic
+        return true;
+    }
+}