fix(aihr): bind assignment completion to session

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

@@ -656,7 +656,7 @@ public class AihrPracticeSeedService {
         String extPartyId = activeSession == null ? trainee : activeSession.extPartyId();
         RecordResponse record = new RecordResponse(null, sessionId, formatNow(), trainee, scenario.name(), result.total(), "待复盘", result.summary(), extPartyId);
         savePracticeRecord(sessionId, activeSession, scenario, record, result);
-        markAssignmentCompleted(request == null ? null : request.assignmentId(), activeSession);
+        markAssignmentCompleted(activeSession == null ? null : activeSession.assignmentId(), activeSession);
         return new FinishResponse(
             result.total(),
             result.scores(),

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

@@ -149,6 +149,13 @@ public class AihrPracticeSeedServiceTest {
         assertTrue(method.contains("训练任务场景与请求不一致"));
     }
 
+    @Test
+    public void finishUsesAssignmentBoundToActiveSession() throws Exception {
+        String source = Files.readString(Path.of("src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java"));
+        assertTrue(source.contains("markAssignmentCompleted(activeSession == null ? null : activeSession.assignmentId(), activeSession)"));
+        assertFalse(source.contains("markAssignmentCompleted(request == null ? null : request.assignmentId(), activeSession)"));
+    }
+
     @Test
     public void mobilePracticeSessionRejectsForeignAndUnknownOwner() {
         JdbcTemplate jdbcTemplate = mock(JdbcTemplate.class);