diff --git a/README.md b/README.md
index 74c4f83..d53a537 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # TPSchedule
 
-当前Android版本0.7.9+35：点按更快到位，缩短回弹和页面过渡，见[发布记录](docs/tpschedule-0.7.9-release.md)。构建34：未选中灰色、选中蓝色，增强乳白透射与滑块对图标本身的折射，见[本次记录](docs/tpschedule-0.7.8-dock-symbol-optics.md)。构建33：修复缓存仍在但系统触发信息丢失时跳过提醒重建的问题，保留启动/暖启动恢复前的诊断；Android 16深度Doze及rare分组测试已实际投递，vivo几小时长待机根因仍待新诊断确认。见[本次记录](docs/tpschedule-0.7.8-reminder-idle.md)。构建32：点按先放大再弹跳、底座方向跟随、边缘外溢及柔软光泽，见[本次记录](docs/tpschedule-0.7.8-dock-bloom.md)。构建31提供滑块移动中持续Q弹、前缘牵拉和弹性跟随，玻璃材质减薄，见[本次记录](docs/tpschedule-0.7.8-dock-drag.md)。构建30提供增强点按挤压回弹、整条Dock随拖动方向弹动、图标到位动画及乳白折射光泽，见[本次记录](docs/tpschedule-0.7.8-dock-spring.md)。构建29提供Dock点按/拖动弹性与Android平板横竖屏、分屏适配，见[本次验证记录](docs/tpschedule-0.7.8-dock-tablet.md)。构建28已提前建立通知类别、区分通知总开关和类别状态，见[通知排查记录](docs/tpschedule-0.7.8-notification-permissions.md)。用户手机已通过开启通知权限并重测确认恢复后台通知。Dock乳白透光层和边缘折射继续保留，见[材质优化记录](docs/tpschedule-0.7.8-dock-refinement.md)。本科/研究生HTML反馈见[0.7.8功能记录](docs/tpschedule-0.7.8-validation.md)及[反馈服务说明](server/feedback/html-diagnostic-update.md)，更新管理后台见[部署说明](server/updates/README.md)。
+当前Android版本0.7.10+36：缺教室保留课程并标为待定，研究生增加格式兼容和具体错误诊断，见[本次记录](docs/tpschedule-0.7.10-import-diagnostics.md)。构建35：点按更快到位，缩短回弹和页面过渡，见[发布记录](docs/tpschedule-0.7.9-release.md)。构建34：未选中灰色、选中蓝色，增强乳白透射与滑块对图标本身的折射，见[本次记录](docs/tpschedule-0.7.8-dock-symbol-optics.md)。构建33：修复缓存仍在但系统触发信息丢失时跳过提醒重建的问题，保留启动/暖启动恢复前的诊断；Android 16深度Doze及rare分组测试已实际投递，vivo几小时长待机根因仍待新诊断确认。见[本次记录](docs/tpschedule-0.7.8-reminder-idle.md)。构建32：点按先放大再弹跳、底座方向跟随、边缘外溢及柔软光泽，见[本次记录](docs/tpschedule-0.7.8-dock-bloom.md)。构建31提供滑块移动中持续Q弹、前缘牵拉和弹性跟随，玻璃材质减薄，见[本次记录](docs/tpschedule-0.7.8-dock-drag.md)。构建30提供增强点按挤压回弹、整条Dock随拖动方向弹动、图标到位动画及乳白折射光泽，见[本次记录](docs/tpschedule-0.7.8-dock-spring.md)。构建29提供Dock点按/拖动弹性与Android平板横竖屏、分屏适配，见[本次验证记录](docs/tpschedule-0.7.8-dock-tablet.md)。构建28已提前建立通知类别、区分通知总开关和类别状态，见[通知排查记录](docs/tpschedule-0.7.8-notification-permissions.md)。用户手机已通过开启通知权限并重测确认恢复后台通知。Dock乳白透光层和边缘折射继续保留，见[材质优化记录](docs/tpschedule-0.7.8-dock-refinement.md)。本科/研究生HTML反馈见[0.7.8功能记录](docs/tpschedule-0.7.8-validation.md)及[反馈服务说明](server/feedback/html-diagnostic-update.md)，更新管理后台见[部署说明](server/updates/README.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 0.7.9+35，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 0.7.10+36，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 382e341..9a8031e 100644
--- a/docs/android-mvp-validation.md
+++ b/docs/android-mvp-validation.md
@@ -1,6 +1,6 @@
 # Android 首版验证记录
 
-当前版本为0.7.9+35，点按节奏及发布验证见[本次记录](tpschedule-0.7.9-release.md)。构建34的灰蓝导航、乳白透射及图标折射见[本次记录](tpschedule-0.7.8-dock-symbol-optics.md)。构建33的提醒恢复与待机诊断见[本次记录](tpschedule-0.7.8-reminder-idle.md)。构建32的点按放大、外溢及柔软材质见[本次记录](tpschedule-0.7.8-dock-bloom.md)。构建31的移动中Q弹、牵拉及减薄见[本次记录](tpschedule-0.7.8-dock-drag.md)。构建30的点按/方向弹动及乳白材质见[本次记录](tpschedule-0.7.8-dock-spring.md)。构建29的Dock弹性与Android平板验证见[本次记录](tpschedule-0.7.8-dock-tablet.md)。构建28的通知权限恢复、通道初始化及真实后台触发见[通知记录](tpschedule-0.7.8-notification-permissions.md)。Dock乳白透光材质见[优化记录](tpschedule-0.7.8-dock-refinement.md)。本科/研究生HTML反馈及签名、备案信息见[0.7.8功能记录](tpschedule-0.7.8-validation.md)。应用更新检查与后台说明见[0.7.6记录](tpschedule-0.7.6-updates.md)。本科考试兼容的验证见[0.7.5记录](tpschedule-0.7.5-validation.md)。两例真实课表缺失字段问题待新页面定位。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。
+当前版本为0.7.10+36，导入日志定位及修复见[本次记录](tpschedule-0.7.10-import-diagnostics.md)。构建35的点按节奏及发布验证见[本次记录](tpschedule-0.7.9-release.md)。构建34的灰蓝导航、乳白透射及图标折射见[本次记录](tpschedule-0.7.8-dock-symbol-optics.md)。构建33的提醒恢复与待机诊断见[本次记录](tpschedule-0.7.8-reminder-idle.md)。构建32的点按放大、外溢及柔软材质见[本次记录](tpschedule-0.7.8-dock-bloom.md)。构建31的移动中Q弹、牵拉及减薄见[本次记录](tpschedule-0.7.8-dock-drag.md)。构建30的点按/方向弹动及乳白材质见[本次记录](tpschedule-0.7.8-dock-spring.md)。构建29的Dock弹性与Android平板验证见[本次记录](tpschedule-0.7.8-dock-tablet.md)。构建28的通知权限恢复、通道初始化及真实后台触发见[通知记录](tpschedule-0.7.8-notification-permissions.md)。Dock乳白透光材质见[优化记录](tpschedule-0.7.8-dock-refinement.md)。本科/研究生HTML反馈及签名、备案信息见[0.7.8功能记录](tpschedule-0.7.8-validation.md)。应用更新检查与后台说明见[0.7.6记录](tpschedule-0.7.6-updates.md)。本科考试兼容的验证见[0.7.5记录](tpschedule-0.7.5-validation.md)。两例真实课表缺失字段问题待新页面定位。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/superpowers/plans/2026-10-28-import-diagnostics.md b/docs/superpowers/plans/2026-10-28-import-diagnostics.md
new file mode 100644
index 0000000..f6ea7b1
--- /dev/null
+++ b/docs/superpowers/plans/2026-10-28-import-diagnostics.md
@@ -0,0 +1,9 @@
+# 0.7.10 导入问题定向修复
+
+用户取消反馈学校选择：不增加学校选择步骤，保留现有日志 school 标记。用户已授权直接实现。
+
+- [x] 本科日志定位为第 15 条活动 room_missing。用匿名样本复现空教室整表失败，保留完整周次/节次/教师，空教室显示“教室待定”，课程备注和导入提示解释来源。教师、课程号、周次和节次仍严格校验，不跳过错误课程。
+- [x] 研究生日志仅有 UnsupportedSchoolLayout，没有 HTML，不能确定具体字段。为解析各阶段增加可公开的原因码和行列号，保留失败快照；修正解析失败最终被误报为网络超时。对纯数字课程号限制及空教室补充严格格式下的兼容测试，不能声称这些就是同学的确切原因。
+- [x] 红绿回归、全量 Flutter 测试、静态分析、正式构建、独立审查、源码与 APK 发布完整性/原签名核对。本次作为 0.7.10+36，保留所有既有版本和登记冻结材料，不修改线上服务器。
+
+验证重点：空教室不丢课程；正常教室/教师不变；畸形时间仍拒绝；未知研究生格式不清空旧课表；具体错误及行列码可见但不输出课程内容；换页后不能沿用旧错误原因。
diff --git a/docs/tpschedule-0.7.10-import-diagnostics.md b/docs/tpschedule-0.7.10-import-diagnostics.md
new file mode 100644
index 0000000..64d5bd7
--- /dev/null
+++ b/docs/tpschedule-0.7.10-import-diagnostics.md
@@ -0,0 +1,36 @@
+# 0.7.10：无 HTML 导入日志排查
+
+日期：2026-10-28。版本 0.7.10+36，Android 包名 com.tpschedule.app。
+
+## 日志结论
+
+两份日志均标记为 TPSchedule 0.7.8+26，而非刚完成的 0.7.9。
+
+- TPSchedule-diagnostics.txt：2026-10-25 北京时间 09:08 左右，school=undergraduate。网页完整内容恢复已应用，随后课表读取反复返回 room_missing、activityNumber=15。可确认第 15 条 TaskActivity 的教室字符串为空，被原解析器当作整表错误拒绝。
+- TPSchedule-diagnostic5s.txt：2026-10-27 北京时间 09:02–09:03，school=graduate。认证后已自动访问课表，读到一个表格片段及学期 73；解析反复返回 UnsupportedSchoolLayout，最终 read_timeout。缺少 HTML 和细分原因码，无法判断究竟是字段、课程行、周次、表头还是空课表问题。不能把它归因于浏览器内核，也不能声称本轮已确定该同学的具体根因。
+
+用户取消反馈中的学校选择：不增加选择步骤，继续依靠日志中的 school 标记。反馈界面、协议、服务器代码均不变。
+
+## 修改
+
+1. 本科课程的教室字符串为空时，保留全部课程、教师、周次和节次，显示“教室待定”，在课程备注中解释学校未提供教室。导入成功提示及既有导入预览会提醒用户。没有猜测实际教室，也没有跳过该课程；教师、课程标识、周次和节次异常继续拒绝整表，保留旧数据。
+2. 研究生解析取消纯数字课程号的额外限制，接受首位为字母/数字、其后为字母/数字/点/下划线/连字符的课程标识；相同严格结构下，空教室也明确标为待定。空教师、无效周次、错位节次、缺失单元格和空表仍拒绝。这些是已通过匿名样本验证的兼容修复，尚不能证明命中原研究生样本。
+3. 研究生拒绝原因细分为来源、大小、学期、表头、单元格、课程字段、周次、节次等常量原因码，并在适用时记录时段行号和星期列号。日志不包含课程名称、教师、教室、帐号、Cookie 或 HTML。
+4. 自动读取和手动读取保留原始解析错误。读取期限或轮询次数耗尽时，若当前页面曾有具体解析错误，则显示并记录该原因；不再一概写成查找/网络超时。错误按页面代次隔离，换页后不继承旧原因；成功解析后清除旧原因。
+
+## 验证
+
+- 原始匿名复现有 4 项失败，分别为空教室、研究生代码/空教室、具体原因、错误被超时覆盖；修复后通过。
+- Flutter 全量 337 项测试通过，静态分析无问题，正式 APK 构建通过；独立审查无需要修复的缺陷。
+- 对比缺教室前后的全部 courseCode/teacher/weekday/period/week 集合，确认没有丢课、少周或少节。
+- 本科导入界面的模拟流程验证课程入库及“部分课程教室待定”提示。
+- 模拟 45 秒读取期限后仍保留 weeks_invalid；新页面不沿用旧周次错误；诊断不含课程值。
+- 既有学校来源校验、学期隔离、失效页面保护、未知布局不清空旧课表及反馈功能测试保持通过。
+
+本轮没有失败同学的 HTML，也未使用他们的帐号复测。请让同学先安装本修复版重试；研究生若仍失败，需新日志中的细分代码，最好自愿附带脱敏学校 HTML，才能继续定位实际页面差异。
+
+## 交付与发布
+
+TPSchedule-0.7.10.apk，同签名覆盖安装，构建号 36。原公钥、私钥、备案号和 0.5.4 的 18 项登记冻结材料保持，旧 APK/源码保持。
+
+服务器无需更新。更新后台发布版本 0.7.10、构建号 36，下载链接使用上传后实际可访问的 HTTPS 地址；本地未执行线上发布。
diff --git a/mobile/lib/app/app_version.dart b/mobile/lib/app/app_version.dart
index 49470d2..483b942 100644
--- a/mobile/lib/app/app_version.dart
+++ b/mobile/lib/app/app_version.dart
@@ -1,3 +1,3 @@
-const appVersion = '0.7.9';
-const appBuildNumber = 35;
+const appVersion = '0.7.10';
+const appBuildNumber = 36;
 const appFilingNumber = '蜀ICP备2025169276号-5A';
diff --git a/mobile/lib/features/profile/import_preview.dart b/mobile/lib/features/profile/import_preview.dart
index 6c917e9..100a31a 100644
--- a/mobile/lib/features/profile/import_preview.dart
+++ b/mobile/lib/features/profile/import_preview.dart
@@ -43,6 +43,11 @@ class _ImportPreviewState extends State<ImportPreview> {
               style: const TextStyle(color: river),
             ),
             if (draft.semesterLabel != null) Text('学期：${draft.semesterLabel}'),
+            if (draft.courses.any((course) => course.room == '教室待定'))
+              const Padding(
+                padding: EdgeInsets.only(top: 8),
+                child: Text('部分课程学校未提供教室，已标为“教室待定”；请以学校最新安排为准。'),
+              ),
             if (widget.controller.snapshot.courses.isNotEmpty &&
                 widget.controller.snapshot.schoolTerm != draft.schoolTerm &&
                 draft.schoolTerm != null)
diff --git a/mobile/lib/features/school/school_page_adapter.dart b/mobile/lib/features/school/school_page_adapter.dart
index 455c57a..56b266c 100644
--- a/mobile/lib/features/school/school_page_adapter.dart
+++ b/mobile/lib/features/school/school_page_adapter.dart
@@ -9,8 +9,32 @@ import '../../domain/school_term.dart';
 import 'school_navigation_policy.dart';
 
 class UnsupportedSchoolLayout implements Exception {
+  const UnsupportedSchoolLayout({
+    this.code = 'layout_unknown',
+    this.row,
+    this.column,
+  });
+  final String code;
+  final int? row, column;
+  String get description => switch (code) {
+    'origin_invalid' => '页面来源不符合学校课表要求',
+    'payload_too_large' => '课表页面超过读取大小限制',
+    'table_missing' => '未找到课表表格',
+    'semester_missing' => '课表学期信息缺失',
+    'row_count_invalid' => '课表时段行数不符合预期',
+    'weekday_header_invalid' => '星期表头格式不符合预期',
+    'row_cell_count_invalid' => '课表时段单元格不完整',
+    'period_header_invalid' => '课表节次表头无法识别',
+    'cell_id_invalid' => '课程单元格的星期或节次标识异常',
+    'course_record_invalid' => '课程名称、教师或课程字段格式无法识别',
+    'period_mismatch' => '课程节次与所在时段不一致',
+    'weeks_invalid' => '上课周次格式无法识别',
+    'unsafe_markup' => '课程单元格包含不支持的网页内容',
+    'empty_timetable' => '课表尚无可识别的课程安排',
+    _ => '学校课表格式暂不支持',
+  };
   @override
-  String toString() => '未识别到完整的学校课表，当前课表保持不变。请在课表查询页面保存 HTML 后重试。';
+  String toString() => '$description（$code），当前课表保持不变。请在反馈中附带学校HTML和日志。';
 }
 
 /// Reads the supplied graduate-system table as data; never executes its scripts.
@@ -22,28 +46,42 @@ class SchoolPageAdapter {
   }) {
     try {
       if (!SchoolNavigationPolicy.isTimetable(origin) ||
-          source == CourseSource.demo ||
-          utf8.encode(content).length > 2 * 1024 * 1024) {
-        throw UnsupportedSchoolLayout();
+          source == CourseSource.demo) {
+        throw const UnsupportedSchoolLayout(code: 'origin_invalid');
+      }
+      if (utf8.encode(content).length > 2 * 1024 * 1024) {
+        throw const UnsupportedSchoolLayout(code: 'payload_too_large');
       }
       final document = html.parse(content);
       final table = document.querySelector('#tbl');
       final selected = document.querySelector('#drpxq option[selected]');
       final term = selected?.attributes['value'];
-      if (table == null ||
-          term == null ||
+      if (table == null) {
+        throw const UnsupportedSchoolLayout(code: 'table_missing');
+      }
+      if (term == null ||
           !RegExp(r'^\d+$').hasMatch(term) ||
           selected!.text.trim().isEmpty) {
-        throw UnsupportedSchoolLayout();
+        throw const UnsupportedSchoolLayout(code: 'semester_missing');
       }
       final rows = table.querySelectorAll('tr');
       const weekdays = ['节次', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六', '星期日'];
-      if (rows.length != 6 || rows.first.children.length != 8) {
-        throw UnsupportedSchoolLayout();
+      if (rows.length != 6) {
+        throw const UnsupportedSchoolLayout(code: 'row_count_invalid');
+      }
+      if (rows.first.children.length != 8) {
+        throw const UnsupportedSchoolLayout(
+          code: 'weekday_header_invalid',
+          row: 0,
+        );
       }
       for (var i = 0; i < 8; i++) {
         if (rows.first.children[i].text.trim() != weekdays[i]) {
-          throw UnsupportedSchoolLayout();
+          throw UnsupportedSchoolLayout(
+            code: 'weekday_header_invalid',
+            row: 0,
+            column: i,
+          );
         }
       }
       final courses = <String, Course>{};
@@ -52,28 +90,79 @@ class SchoolPageAdapter {
       for (var row = 0; row < starts.length; row++) {
         final first = starts[row], last = first == 9 ? 11 : first + 1;
         final cells = rows[row + 1].children;
-        if (cells.length != 8 ||
-            cells.first.id != 't0$first' ||
+        if (cells.length != 8) {
+          throw UnsupportedSchoolLayout(
+            code: 'row_cell_count_invalid',
+            row: row + 1,
+          );
+        }
+        if (cells.first.id != 't0$first' ||
             cells.first.text.trim() != '$first-$last节') {
-          throw UnsupportedSchoolLayout();
+          throw UnsupportedSchoolLayout(
+            code: 'period_header_invalid',
+            row: row + 1,
+          );
         }
         for (var day = 1; day <= 7; day++) {
           final cell = cells[day];
-          if (cell.id != 't$day$first') throw UnsupportedSchoolLayout();
-          for (final line in _lines(cell)) {
+          if (cell.id != 't$day$first') {
+            throw UnsupportedSchoolLayout(
+              code: 'cell_id_invalid',
+              row: row + 1,
+              column: day,
+            );
+          }
+          final List<String> lines;
+          try {
+            lines = _lines(cell);
+          } on UnsupportedSchoolLayout catch (error) {
+            throw UnsupportedSchoolLayout(
+              code: error.code,
+              row: row + 1,
+              column: day,
+            );
+          }
+          for (final line in lines) {
             final record = RegExp(
-              r'^(\d+)/(.+?)/(\d+(?:\.\d+)?)/(\d+(?:\.\d+)?)/([^/]+)/([^/]+)周/(\d+)[~～-](\d+)节/(.+)$',
+              r'^([A-Za-z0-9][A-Za-z0-9_.-]*)\s*/(.+?)/\s*(\d+(?:\.\d+)?)\s*/\s*(\d+(?:\.\d+)?)\s*/([^/]+)/([^/]+)周/(\d+)[~～-](\d+)节/(.*)$',
             ).firstMatch(line);
-            if (record == null ||
-                int.parse(record[7]!) != first ||
+            if (record == null) {
+              throw UnsupportedSchoolLayout(
+                code: 'course_record_invalid',
+                row: row + 1,
+                column: day,
+              );
+            }
+            if (int.parse(record[7]!) != first ||
                 int.parse(record[8]!) != last) {
-              throw UnsupportedSchoolLayout();
+              throw UnsupportedSchoolLayout(
+                code: 'period_mismatch',
+                row: row + 1,
+                column: day,
+              );
             }
             final code = record[1]!,
                 name = record[2]!.trim(),
                 teacher = record[5]!.trim(),
-                room = record[9]!.trim();
-            final weeks = _weeks(record[6]!);
+                rawRoom = record[9]!.trim(),
+                room = rawRoom.isEmpty ? '教室待定' : rawRoom;
+            if (name.isEmpty || teacher.isEmpty) {
+              throw UnsupportedSchoolLayout(
+                code: 'course_record_invalid',
+                row: row + 1,
+                column: day,
+              );
+            }
+            final Set<int> weeks;
+            try {
+              weeks = _weeks(record[6]!);
+            } on UnsupportedSchoolLayout catch (error) {
+              throw UnsupportedSchoolLayout(
+                code: error.code,
+                row: row + 1,
+                column: day,
+              );
+            }
             final identity = jsonEncode([
               term,
               code,
@@ -101,12 +190,15 @@ class SchoolPageAdapter {
               endPeriod: last,
               weeks: {...?previous?.weeks, ...weeks},
               source: source,
+              notes: rawRoom.isEmpty ? '学校未提供教室，请以学校最新安排为准并在公布后刷新课表。' : '',
             );
           }
         }
       }
       // An empty DOM can be an expired session or an incomplete response.
-      if (courses.isEmpty) throw UnsupportedSchoolLayout();
+      if (courses.isEmpty) {
+        throw const UnsupportedSchoolLayout(code: 'empty_timetable');
+      }
       return ImportDraft(
         courses: List.unmodifiable(courses.values),
         explicitlyEmpty: false,
@@ -132,7 +224,7 @@ class SchoolPageAdapter {
           buffer.write('\n');
         } else {
           if (node.localName == 'script' || node.localName == 'style') {
-            throw UnsupportedSchoolLayout();
+            throw const UnsupportedSchoolLayout(code: 'unsafe_markup');
           }
           for (final child in node.nodes) {
             visit(child);
@@ -157,11 +249,13 @@ class SchoolPageAdapter {
     for (final part in text.split(RegExp('[,，、]'))) {
       final range = RegExp(r'^\s*(\d+)(?:\s*[-~～]\s*(\d+))?\s*$')
           .firstMatch(part);
-      if (range == null) throw UnsupportedSchoolLayout();
+      if (range == null) {
+        throw const UnsupportedSchoolLayout(code: 'weeks_invalid');
+      }
       final first = int.parse(range[1]!),
           last = int.parse(range[2] ?? range[1]!);
       if (first < 1 || last > 30 || last < first) {
-        throw UnsupportedSchoolLayout();
+        throw const UnsupportedSchoolLayout(code: 'weeks_invalid');
       }
       result.addAll(List.generate(last - first + 1, (i) => first + i));
     }
diff --git a/mobile/lib/features/school/school_session.dart b/mobile/lib/features/school/school_session.dart
index c0bfc9a..60e6194 100644
--- a/mobile/lib/features/school/school_session.dart
+++ b/mobile/lib/features/school/school_session.dart
@@ -174,6 +174,8 @@ class SchoolSession extends ChangeNotifier {
   bool _routeClosed = false;
   int _pollsLeft = 0;
   int? _probeGeneration;
+  UnsupportedSchoolLayout? _lastLayoutFailure;
+  int? _layoutFailureGeneration;
   SchoolConnectionState connectionState = SchoolConnectionState.signedOut;
   bool _loading = false,
       hasOpened = false,
@@ -334,9 +336,16 @@ class SchoolSession extends ChangeNotifier {
   String get _findingMessage => requestingExams ? '正在查找考试安排，请稍候' : '正在查找课表，请稍候';
   void _armTimeout() {
     _timeout?.cancel();
-    _timeout = Timer(
-      const Duration(seconds: 45),
-      () => _failure('查找超时，请检查学校页面后重试。已有数据保持不变。', code: 'read_timeout'),
+    _timeout = Timer(const Duration(seconds: 45), _finishReadFailure);
+  }
+
+  void _finishReadFailure() {
+    final error = _layoutFailureGeneration == _pageGeneration
+        ? _lastLayoutFailure
+        : null;
+    _failure(
+      error == null ? '查找超时，请检查学校页面后重试。已有数据保持不变。' : '课表读取未完成：$error',
+      code: error?.code ?? 'read_timeout',
     );
   }
 
@@ -396,7 +405,7 @@ class SchoolSession extends ChangeNotifier {
     }
     _poll?.cancel();
     if (_pollsLeft-- <= 0) {
-      if (finding) _failure('查找超时，请检查学校页面后重试。已有数据保持不变。', code: 'read_timeout');
+      if (finding) _finishReadFailure();
       return;
     }
     _poll = Timer(const Duration(milliseconds: 750), () {
@@ -500,6 +509,8 @@ class SchoolSession extends ChangeNotifier {
             // gets only its recognized fragment with the canonical table path.
             final draft = await _reader.read(_target, () async => page.html);
             if (!hasOpened || generation != _pageGeneration) return;
+            _lastLayoutFailure = null;
+            _layoutFailureGeneration = null;
             if (draft.schoolTerm != selectedTerm) {
               DiagnosticLog.instance.add(
                 'term_mismatch',
@@ -528,11 +539,24 @@ class SchoolSession extends ChangeNotifier {
           notifyListeners();
           return;
         } catch (error) {
+          if (generation != _pageGeneration) return;
+          if (error is UnsupportedSchoolLayout) {
+            _lastLayoutFailure = error;
+            _layoutFailureGeneration = generation;
+            message =
+                '课表暂未识别：${error.description}。正在等待页面加载完整；若仍失败，请在反馈中附带学校HTML和日志。';
+          }
           DiagnosticLog.instance.add(
             'school_parse_rejected',
             fields: {
               'school': 'graduate',
-              'code': error.runtimeType.toString(),
+              'code': error is UnsupportedSchoolLayout
+                  ? error.code
+                  : error.runtimeType.toString(),
+              if (error is UnsupportedSchoolLayout && error.row != null)
+                'row': error.row,
+              if (error is UnsupportedSchoolLayout && error.column != null)
+                'column': error.column,
             },
           );
           if (generation != _pageGeneration) return;
@@ -595,6 +619,7 @@ class SchoolSession extends ChangeNotifier {
         liveUrl != uri.toString()) {
       throw UnsupportedSchoolLayout();
     }
+    UnsupportedSchoolLayout? rejected;
     for (final page in evidence.pages) {
       if (page.kind != 'timetable') continue;
       SchoolPageDiagnostic.instance.remember(page.html, page.url);
@@ -608,11 +633,12 @@ class SchoolSession extends ChangeNotifier {
         }
         if (draft.schoolTerm != selectedTerm) continue;
         return draft;
-      } on UnsupportedSchoolLayout {
+      } on UnsupportedSchoolLayout catch (error) {
         if (generation != _pageGeneration) rethrow;
+        rejected = error;
       }
     }
-    throw UnsupportedSchoolLayout();
+    throw rejected ?? const UnsupportedSchoolLayout(code: 'table_missing');
   }
 
   Future<void> readCurrentPage() async {
diff --git a/mobile/lib/features/school/undergraduate/activity_data.dart b/mobile/lib/features/school/undergraduate/activity_data.dart
index 5759c54..748a0ef 100644
--- a/mobile/lib/features/school/undergraduate/activity_data.dart
+++ b/mobile/lib/features/school/undergraduate/activity_data.dart
@@ -54,13 +54,6 @@ List<UndergraduateActivity> parseActivityData(
         i + 1,
       );
     }
-    if (args[5].trim().isEmpty) {
-      throw UndergraduateActivityException(
-        'room_missing',
-        '课程活动未提供教室信息，请附带网页反馈',
-        i + 1,
-      );
-    }
     final bitmap = args[6];
     if (!RegExp(r'^0[01]+$').hasMatch(bitmap) ||
         bitmap.length > 64 ||
@@ -109,7 +102,7 @@ List<UndergraduateActivity> parseActivityData(
         args[1].trim(),
         args[3].substring(0, suffix.start).trim(),
         suffix[1]!,
-        args[5].trim(),
+        args[5].trim().isEmpty ? '教室待定' : args[5].trim(),
         indices,
         weeks,
       ),
diff --git a/mobile/lib/features/school/undergraduate/auth_page.dart b/mobile/lib/features/school/undergraduate/auth_page.dart
index 5a20d87..ecc7994 100644
--- a/mobile/lib/features/school/undergraduate/auth_page.dart
+++ b/mobile/lib/features/school/undergraduate/auth_page.dart
@@ -103,7 +103,13 @@ class _UndergraduateAuthPageState extends State<UndergraduateAuthPage> {
         if (route?.isCurrent == true) Navigator.pop(context);
         messenger.showSnackBar(
           SnackBar(
-            content: Text(exams == null ? '课表已导入，请核对学期开始日。' : '考试信息已更新'),
+            content: Text(
+              exams != null
+                  ? '考试信息已更新'
+                  : draft!.courses.any((c) => c.room == '教室待定')
+                  ? '课表已导入，部分课程教室待定；请核对学期开始日。'
+                  : '课表已导入，请核对学期开始日。',
+            ),
           ),
         );
       } else if (controller.lastError != null) {
diff --git a/mobile/lib/features/school/undergraduate/timetable_adapter.dart b/mobile/lib/features/school/undergraduate/timetable_adapter.dart
index 71438c3..ae24a24 100644
--- a/mobile/lib/features/school/undergraduate/timetable_adapter.dart
+++ b/mobile/lib/features/school/undergraduate/timetable_adapter.dart
@@ -28,7 +28,8 @@ class UndergraduateTimetableAdapter {
           table = html
               .parse(content)
               .querySelector('#manualArrangeCourseTable');
-      if (table == null || doc.querySelector('input[type="password"]') != null) {
+      if (table == null ||
+          doc.querySelector('input[type="password"]') != null) {
         throw const FormatException('请先在学校网页打开课表');
       }
       final termIds = doc
@@ -161,7 +162,10 @@ class UndergraduateTimetableAdapter {
               weeks: group.weeks,
               source: source,
               courseCode: info?.code ?? a.courseCode,
-              notes: info?.notes ?? '',
+              notes: [
+                if (info?.notes.isNotEmpty == true) info!.notes,
+                if (a.room == '教室待定') '学校未提供教室，请以学校最新安排为准并在公布后刷新课表。',
+              ].join('\n'),
             ),
           );
         }
diff --git a/mobile/lib/services/diagnostic_log.dart b/mobile/lib/services/diagnostic_log.dart
index bbb308d..01b4d34 100644
--- a/mobile/lib/services/diagnostic_log.dart
+++ b/mobile/lib/services/diagnostic_log.dart
@@ -21,6 +21,8 @@ class DiagnosticLog {
     'code',
     'version',
     'result',
+    'row',
+    'column',
   };
   final DateTime Function() clock;
   final _entries = <Map<String, dynamic>>[];
diff --git a/mobile/pubspec.yaml b/mobile/pubspec.yaml
index cd5c71b..042a1ef 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: 0.7.9+35
+version: 0.7.10+36
 environment:
   sdk: ^3.13.5
 dependencies:
diff --git a/mobile/test/school/recognized_timetable_test.dart b/mobile/test/school/recognized_timetable_test.dart
index b1ef899..e25785a 100644
--- a/mobile/test/school/recognized_timetable_test.dart
+++ b/mobile/test/school/recognized_timetable_test.dart
@@ -16,6 +16,31 @@ String fixture() {
 
 void main() {
   final url = Uri.parse('https://yjsjy.uestc.edu.cn/pyxx/pygl/xskbcx/index/1');
+  test('graduate course identifiers need not be numeric and missing rooms remain explicit', () {
+    final body = fixture()
+        .replaceAll('101/示例', 'G101/示例')
+        .replaceAll('/示例楼B212', '/');
+    final draft = SchoolPageAdapter().extract(body, url);
+    expect(draft.courses, hasLength(4));
+    final pending = draft.courses.where((c) => c.name.contains('集成电路'));
+    expect(pending.every((c) => c.room == '教室待定'), isTrue);
+    expect(pending.every((c) => c.notes.contains('学校未提供教室')), isTrue);
+  });
+  test('graduate malformed record provides a safe specific reason', () {
+    expect(
+      () => SchoolPageAdapter().extract(
+        fixture().replaceFirst('1-3周', '未知周'),
+        url,
+      ),
+      throwsA(
+        isA<UnsupportedSchoolLayout>().having(
+          (e) => e.toString(),
+          'reason',
+          contains('上课周次'),
+        ),
+      ),
+    );
+  });
   test('school DOM merges week segments without losing full metadata or evening periods', () {
     final draft = SchoolPageAdapter().extract(fixture(), url);
     expect(draft.courses.length, 4);
diff --git a/mobile/test/school/school_session_flow_test.dart b/mobile/test/school/school_session_flow_test.dart
index 6aca2c4..ac14258 100644
--- a/mobile/test/school/school_session_flow_test.dart
+++ b/mobile/test/school/school_session_flow_test.dart
@@ -31,6 +31,59 @@ void main() {
     platform.delegate.finished(url);
   }
 
+  testWidgets(
+    'graduate parser rejection keeps its reason instead of becoming a network timeout',
+    (tester) async {
+      addTearDown(SchoolPageDiagnostic.instance.clear);
+      session.connectionState = SchoolConnectionState.connected;
+      await session.openTimetable(term: SchoolTerm(73));
+      platform.web.javascript = (_) async => schoolPageEvidence(
+        topUrl: platform.web.url!,
+        html: fixture().replaceFirst('1-3周', '未知周'),
+      );
+      await tester.runAsync(() async {
+        navigate(SchoolTerm(73).timetableUri.toString());
+        await flushSchoolEvents();
+      });
+      expect(session.message, contains('上课周次'));
+      await tester.pump(const Duration(seconds: 46));
+      expect(session.message, contains('上课周次'));
+      expect(session.message, isNot(contains('查找超时')));
+      expect(session.pendingDraft, isNull);
+      final log = utf8.decode(await DiagnosticLog.instance.export());
+      expect(log, contains('"code":"weeks_invalid"'));
+      expect(log, contains('"column":5'));
+      expect(log, isNot(contains('示例集成电路')));
+      SchoolPageDiagnostic.instance.clear();
+    },
+  );
+  testWidgets('a new graduate page never inherits an old parsing reason', (
+    tester,
+  ) async {
+    addTearDown(SchoolPageDiagnostic.instance.clear);
+    session.connectionState = SchoolConnectionState.connected;
+    await session.openTimetable(term: SchoolTerm(73));
+    platform.web.javascript = (_) async => schoolPageEvidence(
+      topUrl: platform.web.url!,
+      html: fixture().replaceFirst('1-3周', '未知周'),
+    );
+    await tester.runAsync(() async {
+      navigate(SchoolTerm(73).timetableUri.toString());
+      await flushSchoolEvents();
+    });
+    expect(session.message, contains('上课周次'));
+    platform.web.javascript = (_) async =>
+        schoolPageEvidence(topUrl: platform.web.url!);
+    await tester.runAsync(() async {
+      navigate(SchoolTerm(72).timetableUri.toString());
+      await flushSchoolEvents();
+    });
+    await tester.pump(const Duration(seconds: 46));
+    expect(session.message, contains('查找超时'));
+    expect(session.message, isNot(contains('上课周次')));
+    SchoolPageDiagnostic.instance.clear();
+  });
+
   test(
     'graduate auto read retains HTML after leaving and clears on next query',
     () async {
diff --git a/mobile/test/school/undergraduate_timetable_adapter_test.dart b/mobile/test/school/undergraduate_timetable_adapter_test.dart
index 8a8dbd1..145d8cd 100644
--- a/mobile/test/school/undergraduate_timetable_adapter_test.dart
+++ b/mobile/test/school/undergraduate_timetable_adapter_test.dart
@@ -7,6 +7,7 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:hepan_everyday/features/school/undergraduate/timetable_adapter.dart';
 import 'package:hepan_everyday/data/schedule_file_import.dart';
 import 'package:hepan_everyday/domain/school_identity.dart';
+import 'package:hepan_everyday/domain/course.dart';
 
 void main() {
   test('missing course fields identify the failing field without disclosing values', () {
@@ -15,7 +16,6 @@ void main() {
         'index=0*unitCount+0;table0.activities[index][table0.activities[index].length]=activity;';
     for (final entry in {
       'teacher_missing': base.replaceFirst('"教师"', '""'),
-      'room_missing': base.replaceFirst('"教室"', '""'),
       'course_sequence_invalid': base.replaceFirst('课程(C.01)', '课程'),
     }.entries) {
       expect(
@@ -51,6 +51,24 @@ void main() {
   String fixture() =>
       File('test/fixtures/school/undergraduate-timetable.html')
           .readAsStringSync();
+  test('missing room retains every scheduled occurrence and clearly marks it pending', () {
+    final original = UndergraduateTimetableAdapter.extract(fixture(), uri);
+    final draft = UndergraduateTimetableAdapter.extract(
+      fixture().replaceFirst('"教室1"', '""'),
+      uri,
+    );
+    Set<String> occurrences(Iterable<Course> courses) => <String>{
+      for (final c in courses)
+        for (final w in c.weeks)
+          for (var p = c.startPeriod; p <= c.endPeriod; p++)
+            '${c.courseCode}/${c.teacher}/${c.weekday}/$p/$w',
+    };
+    expect(occurrences(draft.courses), occurrences(original.courses));
+    final pending = draft.courses.where((c) => c.room == '教室待定');
+    expect(pending, isNotEmpty);
+    expect(pending.every((c) => c.notes.contains('学校未提供教室')), isTrue);
+    expect(draft.courses.any((c) => c.room == '教室2'), isTrue);
+  });
   test('undergraduate activity data preserves teachers rooms weeks and period twelve', () {
     final draft = UndergraduateTimetableAdapter.extract(fixture(), uri);
     expect(draft.schoolTerm!.id, 523);
diff --git a/mobile/test/widgets/undergraduate_auth_test.dart b/mobile/test/widgets/undergraduate_auth_test.dart
index eafbe6c..d100f30 100644
--- a/mobile/test/widgets/undergraduate_auth_test.dart
+++ b/mobile/test/widgets/undergraduate_auth_test.dart
@@ -31,7 +31,7 @@ void main() {
     session.dispose();
     controller.dispose();
   });
-  Future<void> open(WidgetTester tester) async {
+  Future<void> open(WidgetTester tester, {String? timetableHtml}) async {
     controller = AppController(
       store,
       FakeNotifications(),
@@ -43,8 +43,9 @@ void main() {
     platform.web.javascript = (s) async => underEvidence(
       platform.web.url!,
       html: s == undergraduateCaptureScript
-          ? File('test/fixtures/school/undergraduate-timetable.html')
-                .readAsStringSync()
+          ? timetableHtml ??
+                File('test/fixtures/school/undergraduate-timetable.html')
+                    .readAsStringSync()
           : null,
     );
     platform.delegate.finished(platform.web.url!);
@@ -85,6 +86,21 @@ void main() {
     expect(find.text('打开'), findsOneWidget);
     SchoolPageDiagnostic.instance.clear();
   });
+  testWidgets('missing room imports with a visible pending-room notice', (
+    tester,
+  ) async {
+    await open(
+      tester,
+      timetableHtml: File('test/fixtures/school/undergraduate-timetable.html')
+          .readAsStringSync()
+          .replaceFirst('"教室1"', '""'),
+    );
+    await tester.tap(find.text('导入当前课表'));
+    await tester.pumpAndSettle();
+    expect(controller.snapshot.courses.any((c) => c.room == '教室待定'), isTrue);
+    expect(find.textContaining('部分课程教室待定'), findsOneWidget);
+    SchoolPageDiagnostic.instance.clear();
+  });
   testWidgets('cross school replacement can be cancelled without saving', (
     tester,
   ) async {