班级查询按“考试场次”合并，显示为“分散至 N 个考场”，不再生成大量重复卡片。[后端实现 (line 416)](E:/jiaowu/src/Jiaowu.Api/Infrastructure/Timetables/TimetableDataService.cs:416)

学生登录后只显示本人座位对应的考场，同时修复混排考场可能带出其他课程的问题。[筛选逻辑 (line 561)](E:/jiaowu/src/Jiaowu.Api/Infrastructure/Timetables/TimetableDataService.cs:561)
多考场卡片提示学生登录查看本人考场及监考教师。[前端展示 (line 1122)](E:/jiaowu/web/src/views/TimetableView.vue:1122)
教室课表、监考教师课表仍按具体考场显示，不受合并影响。
已增加班级合并和学生精准考场回归测试。[测试 (line 183)](E:/jiaowu/tests/Jiaowu.Api.Tests/ExamArrangementServiceTests.cs:183)

src/Jiaowu.Api/Infrastructure/Timetables/TimetableDataService.cs

@@ -340,6 +340,7 @@ public sealed class TimetableDataService(AppDbContext db)
             .OrderBy(x => x.ExamDate)
             .ThenBy(x => x.StartPeriod)
             .Select(x => new ExamSessionProjection(
+                x.Id,
                 x.Id,
                 x.TeachingTaskId,
                 x.TeachingTask!.TaskNumber,
@@ -384,6 +385,7 @@ public sealed class TimetableDataService(AppDbContext db)
             .ThenBy(link => link.ExamRoom!.StartPeriod)
             .ThenBy(link => link.ExamSession!.TeachingTask!.Course!.Code)
             .Select(link => new ExamSessionProjection(
+                link.ExamSessionId,
                 link.ExamRoomId,
                 link.ExamSession!.TeachingTaskId,
                 link.ExamSession.TeachingTask!.TaskNumber,
@@ -408,8 +410,17 @@ public sealed class TimetableDataService(AppDbContext db)
                 link.ExamRoom.UpdatedAt))
             .ToListAsync(cancellationToken);
 
-        result.AddRange(mixedSessions.Select(x =>
-            MapToEntryDto(x, slotLookup)));
+        if (resourceType == TimetableResourceType.Class && !studentId.HasValue)
+        {
+            result.AddRange(mixedSessions
+                .GroupBy(x => x.ExamSessionId)
+                .Select(group => MapClassExamEntryDto(group, slotLookup)));
+        }
+        else
+        {
+            result.AddRange(mixedSessions.Select(x =>
+                MapToEntryDto(x, slotLookup)));
+        }
 
         return result;
     }
@@ -545,10 +556,9 @@ public sealed class TimetableDataService(AppDbContext db)
                 if (studentId.HasValue)
                 {
                     return source.Where(link =>
-                        link.ExamSession!.TeachingTask!.Classes.Any(c =>
-                            c.AdministrativeClassId == resourceId) ||
                         link.ExamRoom!.Seats.Any(s =>
-                            s.StudentId == studentId.Value));
+                            s.StudentId == studentId.Value &&
+                            s.ExamSessionId == link.ExamSessionId));
                 }
                 return source.Where(link =>
                     link.ExamSession!.TeachingTask!.Classes.Any(c =>
@@ -604,7 +614,7 @@ public sealed class TimetableDataService(AppDbContext db)
                 new[] { "监考：" + string.Join("、", x.InvigilatorNames) })
             : x.TeacherNames;
         return new TimetableEntryDto(
-            x.Id,
+            x.ExamRoomId,
             x.TeachingTaskId,
             x.TaskNumber,
             x.TaskName,
@@ -627,8 +637,42 @@ public sealed class TimetableDataService(AppDbContext db)
             x.UpdatedAt);
     }
 
+    private static TimetableEntryDto MapClassExamEntryDto(
+        IEnumerable<ExamSessionProjection> sessions,
+        IReadOnlyDictionary<int, TimetableSlotDto> slotLookup)
+    {
+        var rooms = sessions.ToList();
+        var first = rooms[0];
+        var roomCount = rooms
+            .Select(x => x.ExamRoomId)
+            .Distinct()
+            .Count();
+        var buildingNames = rooms
+            .Select(x => x.BuildingName)
+            .Distinct()
+            .ToList();
+        var campusNames = rooms
+            .Select(x => x.CampusName)
+            .Distinct()
+            .ToList();
+        var entry = MapToEntryDto(first, slotLookup);
+        return entry with
+        {
+            Id = first.ExamSessionId,
+            TeacherNames = first.TeacherNames,
+            ClassroomName = roomCount == 1
+                ? first.ClassroomName
+                : $"分散至 {roomCount} 个考场",
+            BuildingName = buildingNames.Count == 1 ? buildingNames[0] : null,
+            CampusName = campusNames.Count == 1 ? campusNames[0] : null,
+            UpdatedAt = rooms.Max(x => x.UpdatedAt),
+            ExamRoomCount = roomCount
+        };
+    }
+
     private sealed record ExamSessionProjection(
-        Guid Id,
+        Guid ExamSessionId,
+        Guid ExamRoomId,
         Guid TeachingTaskId,
         string TaskNumber,
         string TaskName,
@@ -759,7 +803,8 @@ public sealed record TimetableEntryDto(
     string? ExperimentProjectName = null,
     DateOnly? ExperimentDate = null,
     ExperimentArrangementMode? ExperimentArrangementMode = null,
-    ScheduleEntryKind Kind = ScheduleEntryKind.Lecture);
+    ScheduleEntryKind Kind = ScheduleEntryKind.Lecture,
+    int ExamRoomCount = 1);
 
 public sealed record FlexibleCourseDto(
     Guid Id,