diff --git a/lesingle-creation-backend/src/main/resources/db/migration/V20__drop_biz_contest_contest_name_unique.sql b/lesingle-creation-backend/src/main/resources/db/migration/V20__drop_biz_contest_contest_name_unique.sql
new file mode 100644
index 0000000..9ce5abb
--- /dev/null
+++ b/lesingle-creation-backend/src/main/resources/db/migration/V20__drop_biz_contest_contest_name_unique.sql
@@ -0,0 +1,43 @@
+-- V20: 去除活动名称唯一约束 — 删除 t_biz_contest 上包含 contest_name 的唯一索引（保留主键）
+-- 背景: 允许同一租户/系统内创建同名活动，不再强制活动名称全局或联合唯一
+
+DROP PROCEDURE IF EXISTS tmp_drop_biz_contest_name_uniques;
+
+DELIMITER //
+CREATE PROCEDURE tmp_drop_biz_contest_name_uniques()
+BEGIN
+  DECLARE done INT DEFAULT FALSE;
+  DECLARE ix VARCHAR(128);
+  DECLARE cur CURSOR FOR
+    SELECT DISTINCT s.INDEX_NAME
+    FROM information_schema.STATISTICS s
+    WHERE s.TABLE_SCHEMA = DATABASE()
+      AND s.TABLE_NAME = 't_biz_contest'
+      AND s.NON_UNIQUE = 0
+      AND s.INDEX_NAME <> 'PRIMARY'
+      AND EXISTS (
+        SELECT 1 FROM information_schema.STATISTICS s2
+        WHERE s2.TABLE_SCHEMA = DATABASE()
+          AND s2.TABLE_NAME = 't_biz_contest'
+          AND s2.INDEX_NAME = s.INDEX_NAME
+          AND s2.COLUMN_NAME = 'contest_name'
+      );
+  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
+
+  OPEN cur;
+  ix_loop: LOOP
+    FETCH cur INTO ix;
+    IF done THEN
+      LEAVE ix_loop;
+    END IF;
+    SET @dsql = CONCAT('ALTER TABLE t_biz_contest DROP INDEX `', REPLACE(ix, '`', '``'), '`');
+    PREPARE ps FROM @dsql;
+    EXECUTE ps;
+    DEALLOCATE PREPARE ps;
+  END LOOP;
+  CLOSE cur;
+END //
+DELIMITER ;
+
+CALL tmp_drop_biz_contest_name_uniques();
+DROP PROCEDURE IF EXISTS tmp_drop_biz_contest_name_uniques;
diff --git a/lesingle-creation-frontend/tsconfig.json b/lesingle-creation-frontend/tsconfig.json
index c0175cc..5a02498 100644
--- a/lesingle-creation-frontend/tsconfig.json
+++ b/lesingle-creation-frontend/tsconfig.json
@@ -20,10 +20,10 @@
     "noUnusedParameters": true,
     "noFallthroughCasesInSwitch": true,
 
-    /* Path alias */
+    /* paths 需配合 baseUrl，否则 IDE 无法稳定解析 @/ 与「查找引用」「转到定义」 */
     "baseUrl": ".",
     "paths": {
-      "@/*": ["src/*"]
+      "@/*": ["./src/*"]
     }
   },
   "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"],