学籍异动：休学、复学、退学申请及辅导员→学院→教务处分级审批。

毕业审核：批次计算、缺失课程检查、人工复核、结果发布。
学位授予：毕业资格与 GPA 计算、人工调整、发布授予结果。
毕业离校：离校事项配置、责任角色分工、逐项办理及批次关闭。

tests/Jiaowu.Api.Tests/DegreeAwardRulesTests.cs

@@ -0,0 +1,32 @@
+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Graduation;
+
+namespace Jiaowu.Api.Tests;
+
+public sealed class DegreeAwardRulesTests
+{
+    [Fact]
+    public void Graduated_student_meeting_gpa_requirement_is_granted()
+    {
+        var conclusion = DegreeAwardRules.Evaluate(
+            true, StudentStatus.Graduated, 3.12m, 2.0m);
+
+        Assert.Equal(DegreeAwardConclusion.Granted, conclusion);
+    }
+
+    [Theory]
+    [InlineData(false, StudentStatus.Graduated, 3.12, 2.0)]
+    [InlineData(true, StudentStatus.Active, 3.12, 2.0)]
+    [InlineData(true, StudentStatus.Graduated, 1.99, 2.0)]
+    public void Missing_prerequisite_prevents_degree_award(
+        bool graduationEligible,
+        StudentStatus status,
+        decimal averageGradePoint,
+        decimal minimumGradePoint)
+    {
+        var conclusion = DegreeAwardRules.Evaluate(
+            graduationEligible, status, averageGradePoint, minimumGradePoint);
+
+        Assert.Equal(DegreeAwardConclusion.NotGranted, conclusion);
+    }
+}

tests/Jiaowu.Api.Tests/GraduationAuditRulesTests.cs

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+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Graduation;
+
+namespace Jiaowu.Api.Tests;
+
+public sealed class GraduationAuditRulesTests
+{
+    [Fact]
+    public void Active_student_with_full_credits_and_courses_is_eligible()
+    {
+        var conclusion = GraduationAuditRules.Evaluate(
+            true, StudentStatus.Active, 160, 162, 42, 42, 0);
+
+        Assert.Equal(GraduationAuditConclusion.Eligible, conclusion);
+    }
+
+    [Theory]
+    [InlineData(false, StudentStatus.Active, 160, 162, 42, 42, 0)]
+    [InlineData(true, StudentStatus.Suspended, 160, 162, 42, 42, 0)]
+    [InlineData(true, StudentStatus.Active, 160, 159, 42, 42, 0)]
+    [InlineData(true, StudentStatus.Active, 160, 162, 42, 41, 0)]
+    [InlineData(true, StudentStatus.Active, 160, 162, 42, 42, 1)]
+    public void Any_unresolved_requirement_makes_student_ineligible(
+        bool hasPlan,
+        StudentStatus status,
+        decimal requiredCredits,
+        decimal earnedCredits,
+        int requiredCourses,
+        int passedRequiredCourses,
+        int failedCourses)
+    {
+        var conclusion = GraduationAuditRules.Evaluate(
+            hasPlan, status, requiredCredits, earnedCredits,
+            requiredCourses, passedRequiredCourses, failedCourses);
+
+        Assert.Equal(GraduationAuditConclusion.Ineligible, conclusion);
+    }
+}

tests/Jiaowu.Api.Tests/GraduationClearanceRulesTests.cs

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+using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Graduation;
+
+namespace Jiaowu.Api.Tests;
+
+public sealed class GraduationClearanceRulesTests
+{
+    [Fact]
+    public void Required_items_may_be_completed_or_waived()
+    {
+        var records = new[]
+        {
+            (true, GraduationClearanceRecordStatus.Completed),
+            (true, GraduationClearanceRecordStatus.Waived),
+            (false, GraduationClearanceRecordStatus.Pending)
+        };
+
+        Assert.True(GraduationClearanceRules.CanClose(records));
+    }
+
+    [Fact]
+    public void Pending_required_item_prevents_batch_close()
+    {
+        var records = new[]
+        {
+            (true, GraduationClearanceRecordStatus.Completed),
+            (true, GraduationClearanceRecordStatus.Pending)
+        };
+
+        Assert.False(GraduationClearanceRules.CanClose(records));
+    }
+
+    [Fact]
+    public void Empty_batch_cannot_be_closed()
+    {
+        Assert.False(GraduationClearanceRules.CanClose([]));
+    }
+}