feat(mobile-next): 迁移 Android 一对一语音通话薄适配与入口

复用官方 OpenIMLive 信令与房间，换票改走账号服务 /api/rtc_token；入口仅音频，占线/超时/重复回调与销毁释放由公司层防护。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

mobile-next/lib/pages/contacts/user_profile_panel/user_profile _panel_logic.dart

@@ -6,6 +6,7 @@ import 'package:extended_image/extended_image.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 import 'package:get/get.dart';
+import 'package:openim/company/feature_flags.dart';
 import 'package:openim/routes/app_navigator.dart';
 import 'package:openim_common/openim_common.dart';
 import 'package:sprintf/sprintf.dart';
@@ -324,13 +325,12 @@ class UserProfilePanelLogic extends GetxController {
   }
 
   void toCall() {
-    IMViews.openIMCallSheet(userInfo.value.showName, (index) {
-      imLogic.call(
-        callObj: CallObj.single,
-        callType: index == 0 ? CallType.audio : CallType.video,
-        inviteeUserIDList: [userInfo.value.userID!],
-      );
-    });
+    if (!FeatureFlags.livekitCall) return;
+    imLogic.call(
+      callObj: CallObj.single,
+      callType: CallType.audio,
+      inviteeUserIDList: [userInfo.value.userID!],
+    );
   }
 
   void copyID() {

mobile-next/lib/pages/contacts/user_profile_panel/user_profile _panel_view.dart

@@ -7,6 +7,7 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:get/get.dart';
 import 'package:openim_common/openim_common.dart';
 
+import '../../../company/feature_flags.dart';
 import 'user_profile _panel_logic.dart';
 
 class UserProfilePanelPage extends StatelessWidget {
@@ -234,12 +235,14 @@ class UserProfilePanelPage extends StatelessWidget {
               height: 108.h,
               child: Row(
                 children: [
-                  Expanded(
-                    child: ImageTextButton.call(
-                      onTap: logic.toCall,
+                  if (FeatureFlags.livekitCall) ...[
+                    Expanded(
+                      child: ImageTextButton.call(
+                        onTap: logic.toCall,
+                      ),
                     ),
-                  ),
-                  11.horizontalSpace,
+                    11.horizontalSpace,
+                  ],
                   Expanded(
                     child: ImageTextButton.message(
                       onTap: logic.toChat,