feat(W4): 院系子站嵌套路径-cms_site.path列+uk_site_path/parent_code,门户单段+嵌套双映射,旧链301,public_base_url派生,sitePath预览,SQL三处+升级脚本,T-W4-01..15 全绿279/279

src/main/java/com/yunhai/cms/entity/CmsSite.java

@@ -24,14 +24,24 @@ import javax.persistence.UniqueConstraint;
 @Setter
 @Entity
 @Table(name = "cms_site",
-        uniqueConstraints = @UniqueConstraint(name = "uk_site_code", columnNames = "code"),
+        uniqueConstraints = {
+                @UniqueConstraint(name = "uk_site_path", columnNames = "path"),
+                @UniqueConstraint(name = "uk_site_parent_code", columnNames = {"parent_site_id", "code"})
+        },
         indexes = @Index(name = "idx_site_sch", columnList = "sch_id"))
 public class CmsSite extends BaseEntity {
 
-    /** 站点编码，URL 路径用（/portal/{code}） */
+    /** 站点编码（URL 末段；W4 起不再全局唯一——不同学校可重用同一编码） */
     @Column(name = "code", nullable = false, length = 64)
     private String code;
 
+    /**
+     * 门户路径（W4 嵌套路径，方案 §8.4/D2）：顶层=code；子站=父path+'/'+code。
+     * 门户 URL 唯一标识（/portal/{path}/**），全站唯一。
+     */
+    @Column(name = "path", nullable = false, length = 191)
+    private String path = "";
+
     /** 上级站点ID（0=顶层校站点；院系子站挂主站 id，层级固定两层） */
     @Column(name = "parent_site_id", nullable = false)
     private Integer parentSiteId = 0;