feat(mobile-next): 工号查询防抖、开关接入，资料页不再把工号当手机号

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

mobile-next/lib/company/ui/company_login_page.dart

@@ -6,6 +6,7 @@ import 'package:openim_common/openim_common.dart';
 import '../auth/company_login_logic.dart';
 import '../brand/app_tokens.dart';
 import '../feature_flags.dart';
+import 'state_views.dart';
 
 /// 登录页第一批：v2 布局 + Token，保留 OpenIM 标识，不做畅联换标。
 class CompanyLoginPage extends StatelessWidget {
@@ -66,9 +67,13 @@ class CompanyLoginPage extends StatelessWidget {
                           const SizedBox(height: AppGap.x4),
                           Obx(() => _loginButton(logic)),
                           const SizedBox(height: AppGap.x3),
+                          if (!FeatureFlags.hideRegisterAndReset)
+                            const SizedBox.shrink(),
                           const Text(
                             '登录即代表同意内部使用规范',
-                            style: TextStyle(fontSize: AppFont.small, color: AppColors.textSecondary),
+                            style: TextStyle(
+                                fontSize: AppFont.small,
+                                color: AppColors.textSecondary),
                           ),
                           const Spacer(flex: 3),
                         ],
@@ -79,30 +84,7 @@ class CompanyLoginPage extends StatelessWidget {
               },
             ),
           ),
-          Obx(() {
-            final msg = logic.toast.value;
-            if (msg == null) return const SizedBox.shrink();
-            return SafeArea(
-              child: Align(
-                alignment: Alignment.topCenter,
-                child: Padding(
-                  padding: const EdgeInsets.fromLTRB(AppGap.x4, AppGap.x2, AppGap.x4, 0),
-                  child: Material(
-                    color: AppColors.bannerBg,
-                    borderRadius: BorderRadius.circular(AppRadius.control),
-                    child: Padding(
-                      padding: const EdgeInsets.symmetric(horizontal: AppGap.x4, vertical: AppGap.x3),
-                      child: Text(
-                        msg,
-                        textAlign: TextAlign.center,
-                        style: const TextStyle(fontSize: AppFont.sub, color: Colors.white),
-                      ),
-                    ),
-                  ),
-                ),
-              ),
-            );
-          }),
+          Obx(() => CompanyToastBanner(message: logic.toast.value)),
         ],
       ),
     );