封装跨应用拉起，

CustomKeyboard/KeyboardViewController.m

@@ -16,6 +16,7 @@
 #import "KBFullAccessManager.h"
 #import "KBSkinManager.h"
 #import "KBSkinInstallBridge.h"
+#import "KBExtensionAppLauncher.h"
 
 // 提前声明一个类别，使编译器在 static 回调中识别 kb_consumePendingShopSkin 方法。
 @interface KeyboardViewController (KBSkinShopBridge)
@@ -206,13 +207,25 @@ static void KBSkinInstallNotificationCallback(CFNotificationCenterRef center,
 }
 
 - (void)keyBoardMainView:(KBKeyBoardMainView *)keyBoardMainView didTapToolActionAtIndex:(NSInteger)index {
-    if (index == 0) {
-        /// 充值操作
-        [KBHUD showInfo:KBLocalized(@"Recharge Now")];
-//        [self showFunctionPanel:YES];
-    } else {
+    if (index != 0) {
         [self showFunctionPanel:NO];
+        return;
     }
+
+    // 1. 构造自定义 scheme：kbkeyboardAppExtension://recharge?src=keyboard
+    NSString *urlStr = [NSString stringWithFormat:@"%@://recharge?src=keyboard", KB_APP_SCHEME];
+    NSURL *scheme = [NSURL URLWithString:urlStr];
+    if (!scheme) return;
+
+    // 2. 通过统一工具封装：extensionContext + 响应链兜底
+    [KBExtensionAppLauncher openScheme:scheme
+                  usingInputController:self
+                               source:self.view
+                           completion:^(BOOL success) {
+        if (!success) {
+            [KBHUD showInfo:KBLocalized(@"请切换到主App完成充值")];
+        }
+    }];
 }
 
 - (void)keyBoardMainViewDidTapSettings:(KBKeyBoardMainView *)keyBoardMainView {