docs: 记录已授权迁移的备份恢复阻塞与只读核验

scripts/qa/QaDatabaseProbe.java

@@ -40,8 +40,15 @@ public class QaDatabaseProbe {
                 r.next(); if (!DATABASE.equals(r.getString(1))) throw new SecurityException("Database mismatch");
             }
             query(c,"identity", "SELECT current_database(), current_user, current_schema(), version()");
+            query(c,"server_endpoint", "SELECT inet_server_addr(),inet_server_port(),current_database(),current_user");
+            query(c,"read_only_transaction", "SHOW transaction_read_only");
             query(c,"search_path", "SHOW search_path");
             query(c,"schemas", "SELECT schema_name FROM information_schema.schemata ORDER BY schema_name");
+            // Kingbase information_schema.tables can require extra catalog privileges;
+            // reuse the readable pg_tables view rather than broadening the app role.
+            query(c,"table_inventory", "SELECT schemaname,count(*) FROM pg_tables WHERE schemaname IN ('public','iotlocks') GROUP BY schemaname ORDER BY schemaname");
+            query(c,"training_counts", "SELECT 'train_student',count(*) FROM public.train_student UNION ALL SELECT 'train_enrollment',count(*) FROM public.train_enrollment UNION ALL SELECT 'train_accommodation',count(*) FROM public.train_accommodation");
+            query(c,"round5s_prestate", "SELECT count(*) FROM information_schema.columns WHERE table_schema='iotlocks' AND table_name IN ('lock_auth','lock_command') AND column_name IN ('execution_mode','environment_id','intent_key','intent_version','execution_state','intent_action','intent_at','attempt_started_at')");
             query(c,"columns", "SELECT table_schema,table_name,column_name,data_type,is_nullable,column_default "
                     + "FROM information_schema.columns WHERE (table_schema='iotlocks' AND table_name IN ('lock_auth','lock_command')) ORDER BY table_name,ordinal_position");
             query(c,"constraints", "SELECT table_schema,table_name,constraint_name,constraint_type FROM information_schema.table_constraints "