feat:统一公共审计填充并调整系统枚举接口风格

src/test/java/com/bruce/common/config/EntityAuditMetaObjectHandlerTests.java

@@ -0,0 +1,36 @@
+package com.bruce.common.config;
+
+import com.bruce.rag.entity.RagStore;
+import org.apache.ibatis.reflection.SystemMetaObject;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class EntityAuditMetaObjectHandlerTests {
+
+    @Test
+    void insertFillShouldPopulateAuditFields() {
+        EntityAuditMetaObjectHandler handler = new EntityAuditMetaObjectHandler();
+        RagStore entity = new RagStore();
+
+        handler.insertFill(SystemMetaObject.forObject(entity));
+
+        assertNotNull(entity.getCreateTime());
+        assertNotNull(entity.getUpdateTime());
+        assertEquals("system", entity.getCreateBy());
+        assertEquals("system", entity.getUpdateBy());
+    }
+
+    @Test
+    void updateFillShouldRefreshUpdateAuditFields() {
+        EntityAuditMetaObjectHandler handler = new EntityAuditMetaObjectHandler();
+        RagStore entity = new RagStore();
+        entity.setUpdateBy("oldUser");
+
+        handler.updateFill(SystemMetaObject.forObject(entity));
+
+        assertNotNull(entity.getUpdateTime());
+        assertEquals("system", entity.getUpdateBy());
+    }
+}