diff --git a/README.md b/README.md
index 298b8b1..1426ef7 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # TPSchedule
 
-当前Android版本0.7.1+19：学校浏览器启用宽视口和认证Cookie配置，修复本科认证跳转期间停止读取的问题，补齐脚本/CSS/嵌入页面失败诊断和Chromium版本显示。详见[0.7.1验证记录](docs/tpschedule-0.7.1-validation.md)。真实学校页面仍需本人手机复测。
+当前Android版本0.7.2+20：细化教务页面脚本异常、基础库和样式表状态日志，导出头部显示当前版本及时间。用户0.7.1日志显示认证已成功、随后脚本报错；具体根因仍需新日志确认，本版不能认定已解决组件缺失。详见[0.7.2验证记录](docs/tpschedule-0.7.2-validation.md)。
 
 0.7.0补充：考试页查询类型与卡片保持16像素间距；反馈问题和建议可自选附带最近10分钟的登录/读取/提醒诊断日志。默认不发送，不含密码、Cookie或课表内容，单独作为邮件文本附件。服务端需按[日志附件更新说明](server/feedback/diagnostic-log-update.md)手动更新；真实学校登录及SMTP未由本次离线测试代替验证。玻璃取样偏移仍在调查，未纳入本次修复结论。
 
-学生课表 APP，Flutter 实现，支持电子科技大学研究生和本科生系统。Android 0.7.1+19，Android 7.0 及以上。
+学生课表 APP，Flutter 实现，支持电子科技大学研究生和本科生系统。Android 0.7.2+20，Android 7.0 及以上。
 
 使用用户提供的原始 SVG 图标，蓝色渐变、黄色日历框及白色笔画保持一致；启动画面使用相同配色。0.5.1修复重复启动页闪烁：初始化期间保留原生启动屏，数据就绪后直接显示课表首帧，不再叠加Flutter品牌页或淡出动画。Android12+ 原生启动屏使用同色纯蓝背景及图标，旧版采用蓝色渐变。
 
diff --git a/docs/android-mvp-validation.md b/docs/android-mvp-validation.md
index 3806def..a46be63 100644
--- a/docs/android-mvp-validation.md
+++ b/docs/android-mvp-validation.md
@@ -1,6 +1,6 @@
 # Android 首版验证记录
 
-当前浏览器兼容性修复版为0.7.1+19，验证见 [0.7.1记录](tpschedule-0.7.1-validation.md)。本科接入记录见 [0.7.0记录](tpschedule-0.7.0-validation.md)。下文为首版历史记录。
+当前浏览器诊断细化版为0.7.2+20，验证见 [0.7.2记录](tpschedule-0.7.2-validation.md)。本科接入记录见 [0.7.0记录](tpschedule-0.7.0-validation.md)。下文为首版历史记录。
 
 日期：2026-10-13。测试环境：Flutter 3.47.7 / Dart 3.13.5 / JDK 17；Android 16 API 36，Pixel 7 模拟器，1080×2400。首版版本 0.1.0+1，包 ID com.example.hepan_everyday，最低 Android 7.0（API 24）。
 
diff --git a/docs/school-integration-status.md b/docs/school-integration-status.md
index d20b18a..e88141e 100644
--- a/docs/school-integration-status.md
+++ b/docs/school-integration-status.md
@@ -1,4 +1,6 @@
-# 学校接入状态 · TPSchedule 0.7.1
+# 学校接入状态 · TPSchedule 0.7.2
+
+0.7.1真机新日志确认本科认证成功，进入教务页面后有重复脚本错误。0.7.2细化现有日志，记录固定错误类型、已知基础库与样式状态及导出时间；尚未确定实际组件缺失的根因。详见 [0.7.2记录](tpschedule-0.7.2-validation.md)。
 
 0.7.1补充学校浏览器宽视口、第三方Cookie和资源错误诊断，修复本科认证跳转导致读取永久中断的竞态。255项单元测试及Android16原生浏览器测试通过。用户截图中的样式与组件缺失尚需真机复测，不能仅凭测试认定已解决，详见 [0.7.1验证记录](tpschedule-0.7.1-validation.md)。
 
diff --git a/docs/tpschedule-0.7.2-review.md b/docs/tpschedule-0.7.2-review.md
new file mode 100644
index 0000000..8604835
--- /dev/null
+++ b/docs/tpschedule-0.7.2-review.md
@@ -0,0 +1,48 @@
+# 审查问题处理
+
+Important已修复：两所学校页面完成回调传入代次与生命周期有效性检查，异步URL读取及脚本返回后复核；保持同URL并让代次失效的回归测试观察到RED→GREEN。Minor已修复：beangle=null不再判断为库已加载，现有Node脚本测试覆盖null值。未要求再次审查；完整测试、静态检查与原生验证由主实现者完成并记录。以下为修复前独立审查及当时处理计划。
+
+# Browser diagnostics 0.7.2 review
+
+Reviewed the uncommitted mobile changes against `a4c2df838efe01f39fb27cc6062544a476d86949`, including the new diagnostics implementation, Dart tests, JavaScript guard test, and Android fixture. No original user logs or key files were opened. This is a read-only source review; no full tests were repeated and no application source was changed.
+
+## Strengths
+
+- Console messages become fixed category labels. The snapshot decoder exports only bounded integer counts and explicitly selected booleans, discarding unknown fields.
+- The JavaScript reads neither page text nor resource URLs, cookies, storage, forms, or HTML. Password-page and URL guards fail closed; inspection exceptions are swallowed.
+- Diagnostic capture is launched independently of the login/import callback and changes no navigation policy, import parser, or school security settings.
+- Export headers identify app version/build and the UTC export time. The fixture checks real WebView behavior while asserting private fixture text is absent from exported diagnostics.
+
+## Issues
+
+### Critical
+
+None found.
+
+### Important
+
+1. **URL equality cannot reject a snapshot from a replaced document with the same URL.** `mobile/lib/features/school/school_browser_diagnostics.dart:110-118`; callback sites `mobile/lib/features/school/school_session.dart:112-114` and `mobile/lib/features/school/undergraduate/session.dart:142-144`.
+
+   Capture awaits both native URL reads and JavaScript execution. If a portal document reloads at the same URL while one of these operations is pending, all three URL comparisons still pass. In particular, JavaScript may return the old document's counts, `onPageStarted` can advance the session document generation, and the final `currentUrl()` can still equal the original URL. Those old counts are then appended after the new navigation. This violates the requested different-document guard and can make the diagnostic evidence misleading even though it does not change imported data.
+
+   Pass a captured document generation plus a current-generation predicate (or equivalent) into diagnostics, and recheck after awaits and immediately before recording. The session already maintains `_pageGeneration` / `_document`. Include lifecycle validity where relevant. Add a focused asynchronous test that holds the JavaScript result, advances the document generation while keeping the URL unchanged, then verifies that no events are recorded. Existing tests exercise a different URL but do not cover this case.
+
+### Minor
+
+1. **A null Beangle global is reported as a loaded library.** `mobile/lib/features/school/school_browser_diagnostics.dart:40`.
+
+   JavaScript reports `typeof null === 'object'`, so `window.beangle = null` produces `beangle: true`. Require a non-null value in addition to the object type and cover the null case in the JavaScript test. This is a small diagnostic accuracy issue, not a login failure.
+
+## Declined to judge
+
+- The cause and resolution of the authenticated portal's styling/script failure: real affected-page evidence is absent from this change, and this release only refines diagnostic evidence.
+- Whether the queued complete Dart suite or native fixture passes: the coordinator is running them; this review makes no independent runtime success claim.
+- Untracked output artifacts: excluded from application-source review and not opened because they could include original user material.
+
+## Assessment
+
+**Ready to merge: With fixes.** Privacy boundaries and isolation from login/import behavior are sound in the inspected code. Address the document-generation gap before claiming that snapshots reject replaced documents; do not describe this diagnostic refinement as a fix for the portal rendering problem.
+
+## Coordinator disposition
+
+The coordinator accepted the Important finding and plans to pass an `isCurrent` predicate from each native page-finished callback: graduate capture will use `_pageGeneration` and route/activity guards, and undergraduate capture will use `_generation`, `_document`, and `_valid`. The predicate will be checked around asynchronous native capture. A focused regression will keep the URL unchanged while invalidating the generation during a pending JavaScript result. This is the planned disposition, not an independently verified fix; no second review was requested.
diff --git a/docs/tpschedule-0.7.2-validation.md b/docs/tpschedule-0.7.2-validation.md
new file mode 100644
index 0000000..f6b200f
--- /dev/null
+++ b/docs/tpschedule-0.7.2-validation.md
@@ -0,0 +1,35 @@
+# TPSchedule 0.7.2+20：教务页面脚本诊断细化
+
+2026-10-15，工程F:/program/app。继续已获用户确认的学校WebView兼容性诊断，范围为细化现有日志，不切换内核、不改变学校认证及导入流程。
+
+## 新证据与结论边界
+
+本次读取用户Downloads中的0.7.1日志，时间为北京时间12:36–12:37。浏览器配置完成，第二次启动记录Chromium156.0.8078.4。身份认证返回本科系统后，school_evidence.authenticated=true；随后多次school_console_error.code=script_error。身份认证阶段有图片HTTPS404。没有证据把该图片404认定为教务页面整体缺少组件的原因，也没有证据认定手机缺少Chromium内核。
+
+0.7.1把所有未分类控制台错误压成script_error，丢失了下一步定位所需的异常类型。因此本版修复的是诊断过粗，尚未修复已证实的登录后页面资源根因。
+
+公开入口只读请求对Chrome和WebView两类UA都返回202及脚本页面。另用Android16原生WebView正常进入学校身份认证页，观察到样式表和jQuery存在。该临时观察没有使用账号、未登录、未读取课表；不能替代用户手机登录后的验证，也不能据此宣称防护页面导致此次故障。临时测试已移除，原始附件不进入仓库和源码包。
+
+## 改动
+
+- 控制台新增固定错误分类：jQuery、beangle、require未定义，及ReferenceError、SyntaxError、TypeError、SecurityError、EvalError、RangeError。只存固定类别，保留原有混合内容、CSP、跨域及资源拒绝分类；不存原始报错文字。
+- 两所学校原生页面加载完成时，异步采集脚本标签数、样式表数量、样式链接数量及具备sheet对象的链接数。本科额外记录已知基础库是否存在；统计性能记录中脚本/链接响应202的数量。202本身不代表故障，计数仅供后续结合其他事件分析。
+- 只读页面状态，不改变DOM、发起额外资源请求或注入学校业务功能；跳转或出现密码框时跳过。脚本不读取正文、表单内容、Cookie、存储或资源URL。返回值严格校验类型及上限，诊断失败不影响登录读取。
+- 导出头部新增当前应用版本、构建号和UTC导出时间，便于分辨旧附件。最近10分钟及用户自选附带规则不变；服务端协议不变，无需为本版重新更新服务器。
+
+## 验证
+
+- 固定分类及受限返回值回归测试观察到缺能力时失败、实现后通过。完整Flutter套件258项通过，静态检查无问题。
+- 新Node脚本测试验证实际脚本计数、基础库状态、重定向与密码框保护，并把Cookie、正文和资源URL设为读取即抛错，仍通过。
+- Android16/API36原生测试1项通过，系统Chromium133.0.6943.137。原生控制台固定分类、实际页面状态脚本与解码及敏感夹具文本不外泄均验证；离线data页面不满足生产学校域名要求，脚本/解码在原生夹具验证，域名与文档代次保护由独立回归覆盖。
+- 独立审查发现同URL重新加载时旧诊断可能混入，已用两所学校现有页面代次和生命周期回调校验修复，并观察到回归RED→GREEN；beangle=null误判也已修复。最终258项测试及静态检查均通过。审查及处理见tpschedule-0.7.2-review.md。
+
+## 后续复测
+
+本版为诊断细化版。仍需用户覆盖安装、复现登录后缺组件、立即新建反馈附带日志，依据错误细类和页面依赖状态判断下一步修复。不得把本版发布或测试通过表述为真实教务页面已恢复。
+
+## 最终交付核对
+
+发布与调试APK构建成功；应用包名com.tpschedule.app，versionName=0.7.2、versionCode=20。发布包60106575字节，SHA256：24564624C9A1A908BE6A1A19EBB8C47089AE6ADF20D80E03873992D7F885F9DC。提供带版本名的TPSchedule-0.7.2.apk与稳定名称TPSchedule.apk，两者字节一致。
+
+与0.7.1签名证书逐字节相同；证书SHA256为AF5C21B1BA1E48E461D8EA38DF0FE1C3653F64EB7E8E7728BAE6E5D988BA0D0A。原私钥及登记冻结18项校验未变；0.7.1、0.7.0和0.6.2安装包备份保留。源码包由最终Git提交生成，不含私钥、运行缓存或原始学生附件。
diff --git a/mobile/README.md b/mobile/README.md
index 1ecfaca..443ab84 100644
--- a/mobile/README.md
+++ b/mobile/README.md
@@ -1,8 +1,8 @@
 # TPSchedule Flutter工程
 
-当前版本0.7.1+19，安卓包名 `com.tpschedule.app`。Dart包名保留 `hepan_everyday`，兼容既有代码引用。
+当前版本0.7.2+20，安卓包名 `com.tpschedule.app`。Dart包名保留 `hepan_everyday`，兼容既有代码引用。
 
-学校浏览器在首次导航前配置宽视口及第三方Cookie，显示系统Chromium版本，记录脱敏资源错误；本科认证跳转期间过期的探测会重试。255项单元测试、Android16原生浏览器测试通过，实际学校账号在线加载仍需手机验证，见 `../docs/tpschedule-0.7.1-validation.md`。
+学校浏览器沿用宽视口及第三方Cookie配置、Chromium版本显示和跳转重试；0.7.2细化脚本错误和页面依赖状态，258项单元测试通过。实际教务页面组件缺失仍未确认根因，见 `../docs/tpschedule-0.7.2-validation.md`。
 
 ## 本科使用
 
diff --git a/mobile/integration_test/school_browser_test.dart b/mobile/integration_test/school_browser_test.dart
index 90c6082..1aac93f 100644
--- a/mobile/integration_test/school_browser_test.dart
+++ b/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')));
     },
   );
 }
diff --git a/mobile/lib/app/app_version.dart b/mobile/lib/app/app_version.dart
index 70cbc45..03383db 100644
--- a/mobile/lib/app/app_version.dart
+++ b/mobile/lib/app/app_version.dart
@@ -1,2 +1,2 @@
-const appVersion = '0.7.1';
-const appBuildNumber = 19;
+const appVersion = '0.7.2';
+const appBuildNumber = 20;
diff --git a/mobile/lib/features/school/school_browser.dart b/mobile/lib/features/school/school_browser.dart
index d8647f7..d4346af 100644
--- a/mobile/lib/features/school/school_browser.dart
+++ b/mobile/lib/features/school/school_browser.dart
@@ -2,6 +2,7 @@ import 'package:webview_flutter/webview_flutter.dart';
 import 'package:webview_flutter_android/webview_flutter_android.dart';
 
 import '../../services/diagnostic_log.dart';
+import 'school_browser_diagnostics.dart';
 
 class SchoolBrowserInfo {
   const SchoolBrowserInfo({this.chromiumVersion});
@@ -27,18 +28,9 @@ Future<SchoolBrowserInfo> configureSchoolBrowser(
       await cookies.setAcceptThirdPartyCookies(android, true);
     }
     await controller.setOnConsoleMessage((message) {
-      final text = message.message.toLowerCase();
-      final code = text.contains('mixed content')
-          ? 'mixed_content'
-          : text.contains('content security policy')
-          ? 'content_security_policy'
-          : text.contains('cors')
-          ? 'cross_origin'
-          : text.contains('refused to')
-          ? 'resource_refused'
-          : message.level == JavaScriptLogLevel.error
-          ? 'script_error'
-          : null;
+      final code =
+          schoolConsoleCode(message.message) ??
+          (message.level == JavaScriptLogLevel.error ? 'script_error' : null);
       if (code != null) {
         DiagnosticLog.instance.add(
           'school_console_error',
diff --git a/mobile/lib/features/school/school_browser_diagnostics.dart b/mobile/lib/features/school/school_browser_diagnostics.dart
new file mode 100644
index 0000000..7fcb310
--- /dev/null
+++ b/mobile/lib/features/school/school_browser_diagnostics.dart
@@ -0,0 +1,126 @@
+import 'dart:convert';
+
+import 'package:webview_flutter/webview_flutter.dart';
+
+import '../../services/diagnostic_log.dart';
+
+/// Convert errors into fixed labels; never export the original console text.
+String? schoolConsoleCode(String message) {
+  final text = message.toLowerCase();
+  if (text.contains('mixed content')) return 'mixed_content';
+  if (text.contains('content security policy')) {
+    return 'content_security_policy';
+  }
+  if (text.contains('cors')) return 'cross_origin';
+  if (text.contains('refused to')) return 'resource_refused';
+  if (text.contains('referenceerror')) {
+    if (RegExp(r'(?:jquery|\$) is not defined').hasMatch(text)) {
+      return 'jquery_missing';
+    }
+    if (text.contains('beangle is not defined')) return 'beangle_missing';
+    if (text.contains('require is not defined')) return 'require_missing';
+    return 'reference_error';
+  }
+  if (text.contains('syntaxerror')) return 'syntax_error';
+  if (text.contains('typeerror')) return 'type_error';
+  if (text.contains('securityerror')) return 'security_error';
+  if (text.contains('evalerror')) return 'eval_error';
+  if (text.contains('rangeerror')) return 'range_error';
+  return null;
+}
+
+// Counts and known library booleans only. This never reads text, forms, cookies,
+// storage, or resource URLs. A different document or login form returns null.
+const schoolPageDiagnosticsScript = r'''(() => {
+  if(location.href!==__EXPECTED_URL__ || document.querySelector('input[type="password"]'))return 'null';
+  const links=Array.from(document.querySelectorAll('link[rel~="stylesheet"]'));
+  const resources=performance.getEntriesByType('resource');
+  return JSON.stringify({scripts:document.scripts.length,styles:document.styleSheets.length,
+    links:links.length,loaded:links.filter(link=>link.sheet!==null).length,
+    jquery:typeof window.jQuery==='function',beangle:window.beangle!==null && typeof window.beangle==='object',
+    require:typeof window.require==='function',
+    script202:resources.filter(r=>r.initiatorType==='script' && r.responseStatus===202).length,
+    style202:resources.filter(r=>r.initiatorType==='link' && r.responseStatus===202).length});
+})()''';
+
+void recordSchoolPageState(DiagnosticLog log, String school, Object raw) {
+  dynamic value = raw;
+  try {
+    for (var i = 0; i < 2 && value is String; i++) {
+      value = jsonDecode(value);
+    }
+    if (value is! Map) return;
+    const counts = [
+      'scripts',
+      'styles',
+      'links',
+      'loaded',
+      'script202',
+      'style202',
+    ];
+    const libraries = ['jquery', 'beangle', 'require'];
+    if (counts.any(
+          (key) => value[key] is! int || value[key] < 0 || value[key] > 100000,
+        ) ||
+        libraries.any((key) => value[key] is! bool)) {
+      return;
+    }
+    for (final key in counts) {
+      if ((key == 'script202' || key == 'style202') && value[key] == 0) {
+        continue;
+      }
+      log.add(
+        'school_asset_state',
+        fields: {
+          'school': school,
+          'code': key == 'script202'
+              ? 'script_202'
+              : key == 'style202'
+              ? 'stylesheet_202'
+              : key,
+          'count': value[key] as int,
+        },
+      );
+    }
+    if (school == 'undergraduate') {
+      for (final key in libraries) {
+        log.add(
+          'school_library_state',
+          fields: {'school': school, 'code': key, 'result': value[key] as bool},
+        );
+      }
+    }
+  } catch (_) {
+    /* Diagnostics must not interfere with the school page. */
+  }
+}
+
+Future<void> recordSchoolPageDiagnostics(
+  WebViewController web,
+  String school,
+  String url, {
+  bool Function()? isCurrent,
+}) async {
+  final uri = Uri.tryParse(url);
+  if (uri == null ||
+      uri.scheme != 'https' ||
+      !const {'eams.uestc.edu.cn', 'yjsjy.uestc.edu.cn'}.contains(uri.host)) {
+    return;
+  }
+  try {
+    if (isCurrent?.call() == false) return;
+    if (await web.currentUrl() != url || isCurrent?.call() == false) return;
+    final raw = await web.runJavaScriptReturningResult(
+      schoolPageDiagnosticsScript.replaceAll(
+        '__EXPECTED_URL__',
+        jsonEncode(url),
+      ),
+    );
+    if (await web.currentUrl() != url || isCurrent?.call() == false) {
+      return;
+    }
+    recordSchoolPageState(DiagnosticLog.instance, school, raw);
+  } catch (_) {
+    /* No original exceptions or page data enter the log. */
+  }
+}
diff --git a/mobile/lib/features/school/school_session.dart b/mobile/lib/features/school/school_session.dart
index fd3c7c3..c65e3a8 100644
--- a/mobile/lib/features/school/school_session.dart
+++ b/mobile/lib/features/school/school_session.dart
@@ -13,6 +13,7 @@ import 'school_exam_adapter.dart';
 import 'school_login_flow.dart';
 import 'school_page_probe.dart';
 import 'school_browser.dart';
+import 'school_browser_diagnostics.dart';
 
 enum SchoolConnectionState {
   signedOut,
@@ -34,7 +35,9 @@ class SchoolSession extends ChangeNotifier {
         controller,
         'graduate',
       ));
-      if (!hasOpened || generation != _pageGeneration || serial != _openSerial) {
+      if (!hasOpened ||
+          generation != _pageGeneration ||
+          serial != _openSerial) {
         return;
       }
       browserVersion = info.chromiumVersion;
@@ -106,7 +109,19 @@ class SchoolSession extends ChangeNotifier {
           _loading = true;
           notifyListeners();
         },
-        onPageFinished: _loaded,
+        onPageFinished: (url) {
+          final generation = _pageGeneration;
+          unawaited(
+            recordSchoolPageDiagnostics(
+              web,
+              'graduate',
+              url,
+              isCurrent: () =>
+                  hasOpened && !_routeClosed && generation == _pageGeneration,
+            ),
+          );
+          unawaited(_loaded(url));
+        },
         onWebResourceError: (error) async {
           DiagnosticLog.instance.resourceFailure(
             'graduate',
diff --git a/mobile/lib/features/school/undergraduate/session.dart b/mobile/lib/features/school/undergraduate/session.dart
index af22fc8..bb0b9f7 100644
--- a/mobile/lib/features/school/undergraduate/session.dart
+++ b/mobile/lib/features/school/undergraduate/session.dart
@@ -12,6 +12,7 @@ import 'page_probe.dart';
 import 'timetable_adapter.dart';
 import 'exam_adapter.dart';
 import '../school_browser.dart';
+import '../school_browser_diagnostics.dart';
 
 class UndergraduateSession extends ChangeNotifier {
   UndergraduateSession({this.configureBrowser = configureSchoolBrowser});
@@ -138,7 +139,18 @@ class UndergraduateSession extends ChangeNotifier {
             _emit();
           }
         },
-        onPageFinished: _loaded,
+        onPageFinished: (url) {
+          final generation = _generation, document = _document;
+          unawaited(
+            recordSchoolPageDiagnostics(
+              web,
+              'undergraduate',
+              url,
+              isCurrent: () => _valid(generation) && document == _document,
+            ),
+          );
+          unawaited(_loaded(url));
+        },
         onWebResourceError: (error) async {
           DiagnosticLog.instance.resourceFailure(
             'undergraduate',
diff --git a/mobile/lib/services/diagnostic_log.dart b/mobile/lib/services/diagnostic_log.dart
index 6c0a116..bbb308d 100644
--- a/mobile/lib/services/diagnostic_log.dart
+++ b/mobile/lib/services/diagnostic_log.dart
@@ -3,6 +3,8 @@ import 'dart:convert';
 import 'dart:io';
 import 'dart:typed_data';
 
+import '../app/app_version.dart';
+
 /// Small, structured breadcrumbs. Never accepts raw URLs, HTML or exceptions.
 class DiagnosticLog {
   DiagnosticLog({DateTime Function()? clock}) : clock = clock ?? DateTime.now;
@@ -183,7 +185,9 @@ class DiagnosticLog {
     _trim();
     await flush();
     final header =
-        'TPSchedule diagnostic log\nWindow: last 10 minutes (UTC timestamps)\n'
+        'TPSchedule diagnostic log\nApp: TPSchedule $appVersion+$appBuildNumber\n'
+        'Exported at: ${clock().toUtc().toIso8601String()}\n'
+        'Window: last 10 minutes (UTC timestamps)\n'
         'Up to 500 recent events; no passwords, cookies, HTML or feedback text.\n';
     return Uint8List.fromList(
       utf8.encode('$header${_entries.map(jsonEncode).join('\n')}\n'),
diff --git a/mobile/pubspec.yaml b/mobile/pubspec.yaml
index 42a0e31..bf79acb 100644
--- a/mobile/pubspec.yaml
+++ b/mobile/pubspec.yaml
@@ -1,7 +1,7 @@
 name: hepan_everyday
 description: TPSchedule 学生课表
 publish_to: none
-version: 0.7.1+19
+version: 0.7.2+20
 environment:
   sdk: ^3.13.5
 dependencies:
diff --git a/mobile/test/school/browser_diagnostics_js_test.cjs b/mobile/test/school/browser_diagnostics_js_test.cjs
new file mode 100644
index 0000000..a103db6
--- /dev/null
+++ b/mobile/test/school/browser_diagnostics_js_test.cjs
@@ -0,0 +1,31 @@
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const vm = require('node:vm');
+const path = require('node:path');
+const src = fs.readFileSync(path.join(__dirname, '../../lib/features/school/school_browser_diagnostics.dart'), 'utf8');
+const script = src.match(/schoolPageDiagnosticsScript = r'''([\s\S]*?)''';/)[1];
+const url = 'https://eams.uestc.edu.cn/eams/home.action';
+function state({redirect = false, password = false} = {}) {
+  const document = {
+    querySelector(s) { assert.equal(s, 'input[type="password"]'); return password ? {} : null; },
+    querySelectorAll(s) { assert.equal(s, 'link[rel~="stylesheet"]'); return [{sheet: {}}, {sheet: null}]; },
+    scripts: Array(4), styleSheets: Array(1),
+  };
+  // Reading private data or resource URLs must never be necessary.
+  for (const key of ['cookie', 'body', 'forms']) Object.defineProperty(document, key, {get() { throw Error('PRIVATE_DATA_READ'); }});
+  const resources = [
+    {initiatorType: 'script', responseStatus: 202},
+    {initiatorType: 'link', responseStatus: 202},
+    {initiatorType: 'script', responseStatus: 200},
+    {initiatorType: 'fetch', responseStatus: 202},
+  ];
+  for (const r of resources) Object.defineProperty(r, 'name', {get() { throw Error('PRIVATE_RESOURCE_URL_READ'); }});
+  return JSON.parse(vm.runInNewContext(script.replace('__EXPECTED_URL__', JSON.stringify(url)), {
+    document, location: {href: redirect ? 'https://idas.uestc.edu.cn/authserver/login' : url},
+    window: {jQuery() {}, require: {}, beangle: null}, performance: {getEntriesByType(type) { assert.equal(type, 'resource'); return resources; }},
+  }));
+}
+assert.equal(state({redirect: true}), null);
+assert.equal(state({password: true}), null);
+assert.deepEqual(state(), {scripts: 4, styles: 1, links: 2, loaded: 1, jquery: true, beangle: false, require: false, script202: 1, style202: 1});
+console.log('Browser diagnostics: actual counts, fixed library flags, redirect/password guards, no private data reads passed.');
diff --git a/mobile/test/school/browser_diagnostics_test.dart b/mobile/test/school/browser_diagnostics_test.dart
new file mode 100644
index 0000000..a987918
--- /dev/null
+++ b/mobile/test/school/browser_diagnostics_test.dart
@@ -0,0 +1,121 @@
+import 'dart:convert';
+import 'dart:async';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:hepan_everyday/features/school/school_browser_diagnostics.dart';
+import 'package:hepan_everyday/services/diagnostic_log.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+import '../support/fake_school_web.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  test('a same URL reload invalidates a pending page diagnostic', () async {
+    final platform = FakeSchoolPlatform();
+    WebViewPlatform.instance = platform;
+    final web = WebViewController();
+    const url = 'https://eams.uestc.edu.cn/eams/home.action';
+    platform.web.url = url;
+    final pending = Completer<Object>();
+    platform.web.javascript = (_) => pending.future;
+    var current = true;
+    final capture = recordSchoolPageDiagnostics(
+      web,
+      'undergraduate',
+      url,
+      isCurrent: () => current,
+    );
+    await flushSchoolEvents();
+    current = false;
+    pending.complete(
+      jsonEncode({
+        'scripts': 9345,
+        'styles': 0,
+        'links': 0,
+        'loaded': 0,
+        'jquery': false,
+        'beangle': false,
+        'require': false,
+        'script202': 0,
+        'style202': 0,
+      }),
+    );
+    await capture;
+    expect(
+      utf8.decode(await DiagnosticLog.instance.export()),
+      isNot(contains('"count":9345')),
+    );
+  });
+  test('legacy library failures and syntax failures retain useful fixed categories', () {
+    expect(
+      schoolConsoleCode('Uncaught ReferenceError: jQuery is not defined'),
+      'jquery_missing',
+    );
+    expect(
+      schoolConsoleCode(r'Uncaught ReferenceError: $ is not defined'),
+      'jquery_missing',
+    );
+    expect(
+      schoolConsoleCode('Uncaught ReferenceError: beangle is not defined'),
+      'beangle_missing',
+    );
+    expect(
+      schoolConsoleCode('Uncaught ReferenceError: require is not defined'),
+      'require_missing',
+    );
+    expect(
+      schoolConsoleCode("Uncaught SyntaxError: Unexpected token '<'"),
+      'syntax_error',
+    );
+    expect(
+      schoolConsoleCode(
+        'Uncaught TypeError: PRIVATE_STUDENT is not a function',
+      ),
+      'type_error',
+    );
+    expect(
+      schoolConsoleCode(
+        'Uncaught ReferenceError: PRIVATE_TOKEN is not defined',
+      ),
+      'reference_error',
+    );
+    expect(
+      schoolConsoleCode('Blocked by CORS policy: PRIVATE_URL'),
+      'cross_origin',
+    );
+    expect(schoolConsoleCode('normal PRIVATE_CONSOLE message'), isNull);
+  });
+
+  test('page state accepts only bounded typed diagnostics and rejects malformed state', () async {
+    final log = DiagnosticLog(clock: () => DateTime.utc(2026, 10, 15, 5));
+    final uri = Uri.parse('https://eams.uestc.edu.cn/eams/home.action');
+    final data = {
+      'scripts': 12,
+      'styles': 0,
+      'links': 4,
+      'loaded': 0,
+      'jquery': false,
+      'beangle': false,
+      'require': false,
+      'script202': 3,
+      'style202': 2,
+      'html': 'PRIVATE_HTML',
+      'cookie': 'PRIVATE_COOKIE',
+    };
+    recordSchoolPageState(log, 'undergraduate', jsonEncode(data));
+    var text = utf8.decode(await log.export());
+    expect(text, contains('"code":"jquery","result":false'));
+    expect(text, contains('"code":"stylesheet_202","count":2'));
+    expect(text, isNot(contains('PRIVATE_')));
+    expect(text, isNot(contains(uri.toString())));
+    final before = text;
+    recordSchoolPageState(log, 'undergraduate', 'null');
+    recordSchoolPageState(
+      log,
+      'undergraduate',
+      jsonEncode({'scripts': -1, 'jquery': 'PRIVATE_TEXT'}),
+    );
+    text = utf8.decode(await log.export());
+    expect(text, before);
+  });
+}