v1.2.0: 重构为插件+独立Manager架构，横版UI，精确保留文本框边距的文档转换

Manager/Services/IActivationService.cs

@@ -0,0 +1,23 @@
+using System.Threading.Tasks;
+
+namespace BetterSeewo.Manager.Services
+{
+    public interface IActivationService
+    {
+        Task<bool> CheckActivationStatusAsync();
+        Task<bool> ActivateProfessionalAsync(string licenseKey);
+        Task<bool> EnableIWBForNonTouchAsync();
+        Task<bool> ApplyBoardSupportPatchAsync();
+        Task<bool> LaunchBen5InstallerAsync();
+        ActivationInfo GetCurrentStatus();
+    }
+
+    public class ActivationInfo
+    {
+        public bool IsProfessional { get; set; }
+        public bool IsIWBActive { get; set; }
+        public bool IsNonTouchBoard { get; set; }
+        public string LicenseType { get; set; } = "Community";
+        public string LastActivationDate { get; set; } = "";
+    }
+}