修复验收：修正最终验收证据问题

scripts/qa/CheckRound3bDatabase.java

@@ -23,12 +23,7 @@ public class CheckRound3bDatabase {
             }
         }
         if (pass.isEmpty()) {
-            File yml = new File("RuoYi-Vue/ruoyi-admin/src/main/resources/application-druid.yml");
-            for (String line : Files.readAllLines(yml.toPath())) {
-                if (line.trim().startsWith("password:")) {
-                    pass = line.trim().substring("password:".length()).trim();
-                }
-            }
+            throw new IllegalStateException("QA_DB_PASSWORD is required and must be configured in ~/.railwaysystem-qa.env");
         }
 
         String dbUrl = "jdbc:kingbase8://192.168.139.218:4321/railwaysystem_integrated_qa_20260916?useUnicode=true&characterEncoding=utf8";
@@ -45,7 +40,8 @@ public class CheckRound3bDatabase {
                     "train_class_plan", "train_teacher", "train_student", "train_course",
                     "train_classroom_info", "train_training_site", "train_dormitory_info",
                     "train_lesson", "train_enrollment", "train_accommodation", "train_student_checkin",
-                    "train_dorm_auth", "train_external_operation", "sys_user", "sys_role"
+                    "train_dorm_auth", "train_external_operation", "train_student_portrait", "train_study_duration",
+                    "sys_user", "sys_role"
                 };
 
                 for (String t : tables) {