fix: follow undergraduate login links and capture live history URLs

mobile/test/school/undergraduate_session_test.dart

@@ -31,6 +31,59 @@ void main() {
     session = UndergraduateSession();
   });
   tearDown(() => session.dispose());
+  test('live URL cannot cross origin or change again during capture', () async {
+    await session.openTimetable();
+    final content = File('test/fixtures/school/undergraduate-timetable.html')
+        .readAsStringSync();
+    platform.web.javascript = (_) async => underEvidence(
+      'https://eams.uestc.edu.cn/eams/courseTableForStd.action?semester.id=523',
+      html: content,
+    );
+    for (final address in [
+      'https://other.test/eams/courseTableForStd.action',
+      'https://idas.uestc.edu.cn/authserver/login',
+      'http://eams.uestc.edu.cn/eams/courseTableForStd.action',
+      'https://eams.uestc.edu.cn/eams/courseTableForStd.action?semester.id=503',
+    ]) {
+      platform.web.documentUrl = address;
+      await session.readCurrentTimetable();
+      expect(session.pendingDraft, isNull);
+      expect(session.message, contains('未完成'));
+    }
+  });
+  test('visible timetable imports after same-document history changes native URL does not follow', () async {
+    await session.openTimetable();
+    platform.web.documentUrl = 'https://eams.uestc.edu.cn/eams/courseTableForStd.action?semester.id=523';
+    final content = File('test/fixtures/school/undergraduate-timetable.html')
+        .readAsStringSync();
+    platform.web.javascript = (_) async => underEvidence(
+      'https://eams.uestc.edu.cn/eams/courseTableForStd.action?semester.id=523',
+      html: content,
+    );
+    platform.delegate.finished(platform.web.url!);
+    await flushSchoolEvents();
+    expect(session.statusLabel, '已连接');
+    await session.readCurrentTimetable();
+    expect(session.pendingDraft!.courses, hasLength(18));
+  });
+  test(
+    'duplicate login continuation upgrades exact school HTTP to HTTPS',
+    () async {
+      await session.openTimetable();
+      final decision = await platform.delegate.navigation(
+        NavigationRequest(
+          url: 'http://eams.uestc.edu.cn/eams/home.action?login=1',
+          isMainFrame: true,
+        ),
+      );
+      expect(decision, NavigationDecision.prevent);
+      expect(
+        platform.web.loads.last,
+        'https://eams.uestc.edu.cn/eams/home.action?login=1',
+      );
+      expect(session.message, isNot(contains('未完成')));
+    },
+  );
   test(
     'page-finished during an old probe is retried on the redirected portal',
     () async {