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。

src/Jiaowu.Api/Infrastructure/Graduation/DegreeAwardRules.cs

@@ -0,0 +1,17 @@
+using Jiaowu.Api.Domain.Academic;
+
+namespace Jiaowu.Api.Infrastructure.Graduation;
+
+public static class DegreeAwardRules
+{
+    public static DegreeAwardConclusion Evaluate(
+        bool graduationEligible,
+        StudentStatus studentStatus,
+        decimal averageGradePoint,
+        decimal minimumGradePoint) =>
+        graduationEligible &&
+        studentStatus == StudentStatus.Graduated &&
+        averageGradePoint >= minimumGradePoint
+            ? DegreeAwardConclusion.Granted
+            : DegreeAwardConclusion.NotGranted;
+}

src/Jiaowu.Api/Infrastructure/Graduation/GraduationAuditRules.cs

@@ -0,0 +1,24 @@
+using Jiaowu.Api.Domain.Academic;
+
+namespace Jiaowu.Api.Infrastructure.Graduation;
+
+public static class GraduationAuditRules
+{
+    public static GraduationAuditConclusion Evaluate(
+        bool hasPublishedPlan,
+        StudentStatus studentStatus,
+        decimal requiredCredits,
+        decimal earnedCredits,
+        int requiredCourseCount,
+        int passedRequiredCourseCount,
+        int failedCourseCount)
+    {
+        if (!hasPublishedPlan || studentStatus != StudentStatus.Active)
+            return GraduationAuditConclusion.Ineligible;
+        if (earnedCredits < requiredCredits ||
+            passedRequiredCourseCount < requiredCourseCount ||
+            failedCourseCount > 0)
+            return GraduationAuditConclusion.Ineligible;
+        return GraduationAuditConclusion.Eligible;
+    }
+}

src/Jiaowu.Api/Infrastructure/Graduation/GraduationClearanceRules.cs

@@ -0,0 +1,16 @@
+using Jiaowu.Api.Domain.Academic;
+
+namespace Jiaowu.Api.Infrastructure.Graduation;
+
+public static class GraduationClearanceRules
+{
+    public static bool CanClose(
+        IEnumerable<(bool IsRequired, GraduationClearanceRecordStatus Status)> records)
+    {
+        var snapshot = records.ToArray();
+        return snapshot.Length > 0 && snapshot
+            .Where(x => x.IsRequired)
+            .All(x => x.Status is GraduationClearanceRecordStatus.Completed or
+                GraduationClearanceRecordStatus.Waived);
+    }
+}