feat: integrate undergraduate school workflows and period twelve

mobile/lib/features/exams/exams_page.dart

@@ -6,12 +6,20 @@ import 'package:flutter/material.dart';
 
 import '../../app/app_controller.dart';
 import '../../app/app_theme.dart';
-import '../school/school_exam_adapter.dart';
+import '../../data/exam_file_import.dart';
+import '../../domain/school_identity.dart';
+import '../../domain/undergraduate_exam_query.dart';
 
 class ExamsPage extends StatelessWidget {
-  const ExamsPage({super.key, required this.controller, required this.onSync});
+  const ExamsPage({
+    super.key,
+    required this.controller,
+    required this.onSync,
+    this.onQueryOptions,
+  });
   final AppController controller;
   final VoidCallback onSync;
+  final VoidCallback? onQueryOptions;
   Future<void> _import(BuildContext context) async {
     try {
       final file = await FilePicker.pickFile(
@@ -28,7 +36,7 @@ class ExamsPage extends StatelessWidget {
         }
         bytes.add(chunk);
       }
-      final draft = SchoolExamAdapter.extract(utf8.decode(bytes.takeBytes()));
+      final draft = ExamFileImport.parse(utf8.decode(bytes.takeBytes()));
       if (!context.mounted) return;
       final confirmed = await showDialog<bool>(
         context: context,
@@ -95,6 +103,12 @@ class ExamsPage extends StatelessWidget {
               onPressed: onSync,
               icon: const Icon(Icons.sync_rounded),
             ),
+            if (onQueryOptions != null)
+              IconButton(
+                tooltip: '查询选项',
+                onPressed: onQueryOptions,
+                icon: const Icon(Icons.tune_rounded),
+              ),
             IconButton(
               tooltip: '导入考试 HTML',
               onPressed: () => _import(context),
@@ -132,11 +146,21 @@ class ExamsPage extends StatelessWidget {
           ),
         ] else ...[
           Text(
-            '${schedule.semesterLabel} · ${schedule.records.length} 门课程',
+            '${schedule.school.label} · ${schedule.semesterLabel} · ${schedule.records.length} 条考试',
             style: TextStyle(fontSize: 13, color: ink.withValues(alpha: 0.55)),
           ),
           const SizedBox(height: 18),
-          if (schedule.records.isEmpty) const Text('该学期暂无考试课程'),
+          if (schedule.school == SupportedSchool.uestcUndergraduate)
+            Text(
+              '查询类型：${UndergraduateExamQuery.fromSchedule(schedule)!.orderedTypes.map((t) => t.label).join('、')}',
+              style: const TextStyle(fontSize: 12),
+            ),
+          if (schedule.records.isEmpty)
+            Text(
+              schedule.school == SupportedSchool.uestcUndergraduate
+                  ? '所选考试类型暂未安排'
+                  : '该学期暂无考试课程',
+            ),
           for (final exam in schedule.records)
             Padding(
               padding: const EdgeInsets.only(bottom: 14),
@@ -152,9 +176,25 @@ class ExamsPage extends StatelessWidget {
                       ),
                     ),
                     const SizedBox(height: 14),
+                    if (exam.date.isNotEmpty)
+                      _field(Icons.calendar_today_rounded, '考试日期', exam.date),
                     _field(Icons.schedule_rounded, '考试时间', exam.time),
                     _field(Icons.location_on_outlined, '考场', exam.room),
                     _field(Icons.event_seat_outlined, '座位号', exam.seat),
+                    if (exam.examTypeId != null)
+                      _field(
+                        Icons.category_outlined,
+                        '考试类型',
+                        UndergraduateExamType.fromId(exam.examTypeId!).label,
+                      ),
+                    if (exam.status.isNotEmpty)
+                      _field(
+                        Icons.assignment_turned_in_outlined,
+                        '考试情况',
+                        exam.status,
+                      ),
+                    if (exam.notes.isNotEmpty)
+                      _field(Icons.info_outline_rounded, '说明', exam.notes),
                     if (exam.assessment.isNotEmpty)
                       _field(
                         Icons.assignment_outlined,

mobile/lib/features/school/school_session.dart

@@ -506,6 +506,25 @@ class SchoolSession extends ChangeNotifier {
     return future.whenComplete(() => _logoutFuture = null);
   }
 
+  void invalidateAuthentication() {
+    _openSerial++;
+    _pageGeneration++;
+    _reader.invalidate();
+    _flow.reset();
+    _poll?.cancel();
+    _timeout?.cancel();
+    _readingActive = false;
+    _routeClosed = true;
+    hasOpened = false;
+    pendingDraft = null;
+    pendingExams = null;
+    finding = false;
+    _loading = false;
+    connectionState = SchoolConnectionState.signedOut;
+    message = '学校登录已退出';
+    notifyListeners();
+  }
+
   Future<void> _performLogout() async {
     _openSerial++;
     _pageGeneration++;

mobile/lib/features/school/undergraduate/session.dart

@@ -368,6 +368,8 @@ class UndergraduateSession extends ChangeNotifier {
 
   void invalidateAuthentication() {
     _reset();
+    _active = false;
+    hasOpened = false;
     _connected = false;
     awaitingAuthentication = false;
     message = '学校登录已退出';

mobile/lib/features/timetable/course_details.dart

@@ -24,6 +24,10 @@ void showCourseDetails(BuildContext context, CourseOccurrence event) {
             const SizedBox(height: 20),
             _line(Icons.person_outline_rounded, event.course.teacher),
             _line(Icons.location_on_outlined, event.course.room),
+            if (event.course.courseCode.isNotEmpty)
+              _line(Icons.tag_rounded, '课程代码：${event.course.courseCode}'),
+            if (event.course.notes.isNotEmpty)
+              _line(Icons.info_outline_rounded, event.course.notes),
             _line(
               Icons.schedule_rounded,
               '${minuteLabel(event.start.hour * 60 + event.start.minute)}–${minuteLabel(event.end.hour * 60 + event.end.minute)} · 第 ${event.course.startPeriod}–${event.course.endPeriod} 节',

mobile/lib/features/timetable/timetable_page.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import '../../app/app_controller.dart';
 import '../../app/app_theme.dart';
 import '../../domain/schedule_engine.dart';
+import '../../domain/school_identity.dart';
 import '../../widgets/directional_week_transition.dart';
 import '../profile/settings_page.dart';
 import 'week_grid.dart';
@@ -84,13 +85,24 @@ class _TimetablePageState extends State<TimetablePage> {
             Padding(
               padding: const EdgeInsets.fromLTRB(14, 0, 14, 8),
               child: Text(
-                c.snapshot.schoolTerm!.label,
+                '${c.snapshot.schoolTerm!.school.label} · ${c.snapshot.schoolTerm!.label}',
                 style: TextStyle(
                   fontSize: 12,
                   color: ink.withValues(alpha: 0.5),
                 ),
               ),
             ),
+          if (!c.isDemo &&
+              c.snapshot.schoolTerm != null &&
+              c.snapshot.selectedSchool != null &&
+              c.snapshot.selectedSchool != c.snapshot.schoolTerm!.school)
+            Padding(
+              padding: const EdgeInsets.fromLTRB(14, 0, 14, 8),
+              child: Text(
+                '当前仍为${c.snapshot.schoolTerm!.school.label}课表；新课表导入成功后才会替换。',
+                style: const TextStyle(fontSize: 12, color: river),
+              ),
+            ),
           const SizedBox(height: 10),
           SurfaceCard(
             padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 0),
@@ -182,6 +194,12 @@ class _TimetablePageState extends State<TimetablePage> {
                 monday: monday,
                 today: today,
                 settings: c.visibleSettings,
+                periodCount:
+                    !c.isDemo &&
+                        c.snapshot.schoolTerm?.school ==
+                            SupportedSchool.uestcUndergraduate
+                    ? 12
+                    : 11,
               ),
             ),
             const SizedBox(height: 12),

mobile/lib/features/timetable/week_grid.dart

@@ -14,7 +14,9 @@ class WeekGrid extends StatelessWidget {
     required this.monday,
     required this.today,
     required this.settings,
-  });
+    this.periodCount = 11,
+  }) : assert(periodCount == 11 || periodCount == 12);
+  final int periodCount;
   final List<CourseOccurrence> events;
   final DateTime monday, today;
   final AppSettings settings;
@@ -111,7 +113,7 @@ class WeekGrid extends StatelessWidget {
           (period - 1) * rowHeight +
           (period > 4 ? gap : 0) +
           (period > 8 ? gap : 0);
-      final height = 11 * rowHeight + 2 * gap;
+      final height = periodCount * rowHeight + 2 * gap;
       return Row(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
@@ -120,7 +122,7 @@ class WeekGrid extends StatelessWidget {
             height: header + height,
             child: Stack(
               children: [
-                for (final slot in lessonSlots)
+                for (final slot in lessonSlots.take(periodCount))
                   Positioned(
                     top: header + top(slot.period),
                     left: 0,
@@ -244,7 +246,7 @@ class WeekGrid extends StatelessWidget {
                             ),
                           ),
                         ),
-                      for (var p = 1; p <= 11; p++)
+                      for (var p = 1; p <= periodCount; p++)
                         Positioned(
                           left: 0,
                           right: 0,