Refine school script diagnostics and document-state capture

mobile/integration_test/school_browser_test.dart

@@ -6,6 +6,7 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 import 'package:webview_flutter/webview_flutter.dart';
 import 'package:hepan_everyday/features/school/school_browser.dart';
+import 'package:hepan_everyday/features/school/school_browser_diagnostics.dart';
 import 'package:hepan_everyday/services/diagnostic_log.dart';
 
 void main() {
@@ -31,7 +32,7 @@ void main() {
       await tester.pumpAndSettle();
       const html =
           '<!doctype html><html><head><meta name="viewport" content="width=1200"></head>'
-          '<body>Legacy teaching portal fixture</body></html>';
+          '<body>PRIVATE_NATIVE_PAGE_TEXT</body></html>';
       await web.loadHtmlString(html);
       await loaded.future.timeout(const Duration(seconds: 20));
       final before = num.parse(
@@ -51,11 +52,32 @@ void main() {
       expect(before, lessThan(1000));
       expect(after, greaterThanOrEqualTo(1100));
       expect(info.chromiumVersion, matches(r'^\d+(\.\d+){1,3}$'));
-      await web.runJavaScript('console.error("PRIVATE_NATIVE_CONSOLE_DETAIL")');
+      await web.runJavaScript(
+        'console.error("Uncaught ReferenceError: jQuery is not defined PRIVATE_NATIVE_CONSOLE_DETAIL")',
+      );
       await Future<void>.delayed(const Duration(milliseconds: 200));
+      // Native data fixtures use about:blank; test the script and decoder here.
+      // Separate tests cover production origin and document-generation guards.
+      dynamic fixtureUrl = await web.runJavaScriptReturningResult(
+        'location.href',
+      );
+      if ((fixtureUrl as String).startsWith('"')) {
+        fixtureUrl = jsonDecode(fixtureUrl);
+      }
+      final rawState = await web.runJavaScriptReturningResult(
+        schoolPageDiagnosticsScript.replaceAll(
+          '__EXPECTED_URL__',
+          jsonEncode(fixtureUrl),
+        ),
+      );
+      recordSchoolPageState(DiagnosticLog.instance, 'undergraduate', rawState);
       final log = utf8.decode(await DiagnosticLog.instance.export());
       expect(log, contains('school_console_error'));
+      expect(log, contains('"code":"jquery_missing"'));
+      expect(log, contains('"code":"jquery","result":false'));
+      expect(log, contains('school_asset_state'));
       expect(log, isNot(contains('PRIVATE_NATIVE_CONSOLE_DETAIL')));
+      expect(log, isNot(contains('PRIVATE_NATIVE_PAGE_TEXT')));
     },
   );
 }