diff --git a/.gitignore b/.gitignore
index 968cfb8..67e867d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,4 +46,5 @@ bin/
 logs/
 
 ### JCEF Dlls ###
-library/jcef/
\ No newline at end of file
+library/*/
+
diff --git a/library/WallpaperOptimization.dll b/library/WallpaperOptimization.dll
new file mode 100644
index 0000000..d7b10d7
Binary files /dev/null and b/library/WallpaperOptimization.dll differ
diff --git a/library/chrome_elf.dll b/library/chrome_elf.dll
new file mode 100644
index 0000000..8f29560
Binary files /dev/null and b/library/chrome_elf.dll differ
diff --git a/src/main/java/com/axis/innovators/box/window/CasdoorLoginWindow.java b/src/main/java/com/axis/innovators/box/window/CasdoorLoginWindow.java
index 574e9e0..ae184f2 100644
--- a/src/main/java/com/axis/innovators/box/window/CasdoorLoginWindow.java
+++ b/src/main/java/com/axis/innovators/box/window/CasdoorLoginWindow.java
@@ -32,6 +32,7 @@ import org.cef.handler.CefKeyboardHandlerAdapter;
 import org.cef.handler.CefLifeSpanHandlerAdapter;
 import org.cef.handler.CefLoadHandlerAdapter;
 import org.cef.callback.CefMenuModel;
+import org.cef.callback.CefMenuModel.MenuId;
 import org.cef.callback.CefContextMenuParams;
 
 
@@ -195,71 +196,34 @@ public class CasdoorLoginWindow {
 
         // 🔹 自定义右键菜单
         client.addContextMenuHandler(new org.cef.handler.CefContextMenuHandlerAdapter() {
-          private final int CMD_COPY = 100;
-          private final int CMD_BACK = 101;
-          private final int CMD_FORWARD = 102;
-          private final int CMD_RELOAD = 103;
 
           @Override
           public void onBeforeContextMenu(org.cef.browser.CefBrowser browser, org.cef.browser.CefFrame frame,
                                           org.cef.callback.CefContextMenuParams params, org.cef.callback.CefMenuModel model) {
             model.clear(); // 清空默认菜单
-            boolean hasSelection = false;
-            try {
-              java.lang.reflect.Method m = params.getClass().getMethod("getSelectionText");
-              Object sel = m.invoke(params);
-              if (sel != null && !sel.toString().trim().isEmpty()) {
-                hasSelection = true;
-              }
-            } catch (Throwable ignored) {}
-            if (hasSelection) {
-              model.addItem(CMD_COPY, "复制");
+            if (browser.canGoBack()) {
+              model.addItem(MenuId.MENU_ID_BACK, "后退");
             }
+            if (browser.canGoForward()) {
+              model.addItem(MenuId.MENU_ID_FORWARD, "前进");
+            }
+            // 仅有选中内容时显示“复制”
+            String selectionText = params.getSelectionText();
+            if (selectionText != null && !selectionText.trim().isEmpty()) {
+              model.addItem(MenuId.MENU_ID_COPY, "复制");
+            }
+            // 仅在可编辑区域显示“粘贴”
+            if (params.isEditable()) {
+              model.addItem(MenuId.MENU_ID_PASTE, "粘贴");
+            }
+            model.addItem(MenuId.MENU_ID_RELOAD, "刷新");
 
-            // 可后退/前进时显示
-            try {
-              if (browser.canGoBack()) {
-                model.addItem(CMD_BACK, "后退");
-              }
-              if (browser.canGoForward()) {
-                model.addItem(CMD_FORWARD, "前进");
-              }
-            } catch (Throwable ignored) {}
-
-            model.addItem(CMD_RELOAD, "刷新");
           }
 
           @Override
           public boolean onContextMenuCommand(org.cef.browser.CefBrowser browser, org.cef.browser.CefFrame frame,
-                                              org.cef.callback.CefContextMenuParams params, int commandId, int eventFlags) {
-            switch (commandId) {
-              case CMD_COPY:
-                // 通过 JS 将选中内容复制到剪贴板（包含降级方案）
-                String copyJs =
-                        "(function(){"
-                                + "var s = window.getSelection ? window.getSelection().toString() : (document.selection ? document.selection.createRange().text : '');"
-                                + "if(!s) return;"
-                                + "try{ navigator.clipboard.writeText(s); }"
-                                + "catch(e){ var ta=document.createElement('textarea'); ta.value=s; document.body.appendChild(ta); ta.select(); document.execCommand('copy'); document.body.removeChild(ta);} "
-                                + "})();";
-                browser.executeJavaScript(copyJs, browser.getURL(), 0);
-                return true;
-
-              case CMD_BACK:
-                try { if (browser.canGoBack()) browser.goBack(); } catch (Throwable ignored) {}
-                return true;
-
-              case CMD_FORWARD:
-                try { if (browser.canGoForward()) browser.goForward(); } catch (Throwable ignored) {}
-                return true;
-
-              case CMD_RELOAD:
-                try { browser.reload(); } catch (Throwable ignored) {}
-                return true;
-
-              default:
-                return false;
-            }
+              org.cef.callback.CefContextMenuParams params, int commandId, int eventFlags) {
+            return false; // 使用默认处理
           }
         });
       } catch (Throwable e) {