fix(aihr): make daily drill completion race-safe

backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java

@@ -1926,7 +1926,7 @@ public class AihrPracticeSeedService {
         Long audioOssId = request == null ? null : request.audioOssId();
         DailyDrillScore score = scoreDailyDrill(answer, parts.referenceAnswer());
         LocalDateTime now = LocalDateTime.now();
-        jdbcTemplate.update("""
+        int updated = jdbcTemplate.update("""
             UPDATE aihr_practice_assignment
             SET status = '已完成',
                 answer_text = ?,
@@ -1948,6 +1948,9 @@ public class AihrPracticeSeedService {
             tenantId(),
             id
         );
+        if (updated == 0) {
+            return null;
+        }
         return new DailyDrillAnswerResponse(id, "已完成", score.correct(), score.score(), score.feedback(), parts.referenceAnswer(), audioUrl, audioOssId);
     }
 

backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrPracticeSeedServiceTest.java

@@ -131,6 +131,7 @@ public class AihrPracticeSeedServiceTest {
         String statusGuard = "status = '待训练'";
         assertTrue(method.contains("AND " + statusGuard));
         assertTrue(method.indexOf("AND " + statusGuard) != method.lastIndexOf("AND " + statusGuard));
+        assertTrue(method.contains("if (updated == 0)"));
     }
 
     @Test