Fix race condition in registry editor navigation on first launch

ContextMenuManager/BluePointLilac.Methods/ExternalProgram.cs

@@ -35,13 +35,36 @@
                 //注册表编辑器窗口多开
                 process = Process.Start("regedit.exe", "-m");
                 process.WaitForInputIdle();
-                hMain = process.MainWindowHandle;
+
+                // 等待主窗口句柄可用，最多等待5秒
+                int retries = MAX_WINDOW_WAIT_RETRIES;
+                while (retries-- > 0)
+                {
+                    process.Refresh();
+                    hMain = process.MainWindowHandle;
+                    if (hMain != IntPtr.Zero) break;
+                    Thread.Sleep(100);
+                }
+
+                if (hMain == IntPtr.Zero) return;
             }
 
             ShowWindowAsync(hMain, SW_SHOWNORMAL);
             SetForegroundWindow(hMain);
-            var hTree = FindWindowEx(hMain, IntPtr.Zero, "SysTreeView32", null);
-            var hList = FindWindowEx(hMain, IntPtr.Zero, "SysListView32", null);
+
+            // 等待树视图和列表视图控件就绪，最多等待5秒
+            IntPtr hTree = IntPtr.Zero;
+            IntPtr hList = IntPtr.Zero;
+            int retries2 = MAX_CHILD_WINDOW_WAIT_RETRIES;
+            while (retries2-- > 0)
+            {
+                hTree = FindWindowEx(hMain, IntPtr.Zero, "SysTreeView32", null);
+                hList = FindWindowEx(hMain, IntPtr.Zero, "SysListView32", null);
+                if (hTree != IntPtr.Zero && hList != IntPtr.Zero) break;
+                Thread.Sleep(100);
+            }
+
+            if (hTree == IntPtr.Zero || hList == IntPtr.Zero) return;
 
             SetForegroundWindow(hTree);
             SetFocus(hTree);
@@ -224,7 +247,7 @@
                         UseShellExecute = true
                     })?.Dispose();
                 }
                 catch (Exception ex1) when (
                     ex is Win32Exception || 
                     ex is InvalidOperationException || 
                     ex is UnauthorizedAccessException)
@@ -295,6 +318,8 @@
         private const int WM_CHAR = 0x102;
         private const int VK_HOME = 0x24;
         private const int VK_RIGHT = 0x27;
+        private const int MAX_WINDOW_WAIT_RETRIES = 50; // 等待主窗口最多5秒 (50 * 100ms)
+        private const int MAX_CHILD_WINDOW_WAIT_RETRIES = 50; // 等待子窗口最多5秒 (50 * 100ms)
 
         [DllImport("user32.dll")]
         private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);