已完成“考试安排与考场管理”模块：

考试计划草稿、场次配置与正式发布。
教学班、考试时间、考场、监考教师关联。
自动校验考场容量。
阻止考场、监考教师和学生考试时间冲突。
管理员查看考生名单。
教师查看个人监考安排。
学生查看已发布考试日程。
SQLite 增量升级和 MySQL 正式迁移。

src/Jiaowu.Api/Domain/Academic/ExamEntities.cs

@@ -0,0 +1,43 @@
+using Jiaowu.Api.Domain.Common;
+
+namespace Jiaowu.Api.Domain.Academic;
+
+public sealed class ExamPlan : EntityBase
+{
+    public Guid AcademicTermId { get; set; }
+    public AcademicTerm? AcademicTerm { get; set; }
+    public required string Name { get; set; }
+    public ExamPlanStatus Status { get; set; } = ExamPlanStatus.Draft;
+    public string? Notes { get; set; }
+    public DateTime? PublishedAt { get; set; }
+    public ICollection<ExamSession> Sessions { get; set; } = [];
+}
+
+public sealed class ExamSession : EntityBase
+{
+    public Guid ExamPlanId { get; set; }
+    public ExamPlan? ExamPlan { get; set; }
+    public Guid TeachingTaskId { get; set; }
+    public TeachingTask? TeachingTask { get; set; }
+    public Guid ClassroomId { get; set; }
+    public Classroom? Classroom { get; set; }
+    public DateTime StartsAt { get; set; }
+    public DateTime EndsAt { get; set; }
+    public string? Notes { get; set; }
+    public ICollection<ExamSessionInvigilator> Invigilators { get; set; } = [];
+}
+
+public sealed class ExamSessionInvigilator
+{
+    public Guid ExamSessionId { get; set; }
+    public ExamSession? ExamSession { get; set; }
+    public Guid TeacherId { get; set; }
+    public Teacher? Teacher { get; set; }
+}
+
+public enum ExamPlanStatus
+{
+    Draft = 1,
+    Published = 2,
+    Archived = 3
+}