fix(dq): устранено переполнение памяти проверок

- Зачем:
  - параллельный DQ выгружал деловые ключи в Python и исчерпывал 640 МиБ планировщика.
- Что:
  - четыре сверки агрегируют дневные итоги и ограниченную диагностику в ClickHouse.
  - коробка планировщика поднята до 1,5 ГиБ, локальные пределы задач удалены.
  - измерения и граница между SQL и Python записаны в документации.
- Проверка:
  - make lint, make config-test, make smoke, make check-clickhouse, make check-services.
  - полный etl_pipeline, красный и восстановительный прогоны dq_check.

sql/dq/daily_traffic_vs_dds.sql

@@ -23,24 +23,49 @@ WITH
             any(known_users) AS known_users
         FROM dm.daily_traffic_v
         GROUP BY report_date
+    ),
+    comparison AS
+    (
+        SELECT
+            coalesce(reference.report_date, actual.report_date) AS data_date,
+            toString(coalesce(reference.report_date, actual.report_date))
+                AS business_key,
+            isNotNull(reference.report_date) AS reference_present,
+            isNotNull(actual.report_date) AS actual_present,
+            toString(tuple(reference.visitors, reference.known_users))
+                AS reference_value,
+            concat(
+                toString(tuple(actual.visitors, actual.known_users)),
+                ', rows=',
+                toString(actual.physical_rows)
+            ) AS actual_value,
+            isNull(reference.report_date)
+                OR isNull(actual.report_date)
+                OR actual.physical_rows != 1
+                OR NOT isNotDistinctFrom(reference.visitors, actual.visitors)
+                OR NOT isNotDistinctFrom(reference.known_users, actual.known_users)
+                AS failed
+        FROM reference
+        GLOBAL FULL OUTER JOIN actual USING (report_date)
     )
 SELECT
-    coalesce(reference.report_date, actual.report_date) AS data_date,
-    toString(coalesce(reference.report_date, actual.report_date)) AS business_key,
-    isNotNull(reference.report_date) AS reference_present,
-    isNotNull(actual.report_date) AS actual_present,
-    toString(tuple(reference.visitors, reference.known_users)) AS reference_value,
-    concat(
-        toString(tuple(actual.visitors, actual.known_users)),
-        ', rows=',
-        toString(actual.physical_rows)
-    ) AS actual_value,
-    isNull(reference.report_date)
-        OR isNull(actual.report_date)
-        OR actual.physical_rows != 1
-        OR NOT isNotDistinctFrom(reference.visitors, actual.visitors)
-        OR NOT isNotDistinctFrom(reference.known_users, actual.known_users) AS failed
-FROM reference
-GLOBAL FULL OUTER JOIN actual USING (report_date)
+    data_date,
+    countIf(reference_present) AS reference_rows,
+    countIf(actual_present) AS actual_rows,
+    countIf(failed) AS failed_rows,
+    groupArrayIf(20)(
+        concat(
+            toString(data_date),
+            ' key=',
+            business_key,
+            ': эталон=',
+            if(reference_present, reference_value, 'нет ключа'),
+            ', объект=',
+            if(actual_present, actual_value, 'нет ключа')
+        ),
+        failed
+    ) AS diagnostics
+FROM comparison
+GROUP BY data_date
 ORDER BY data_date
 SETTINGS join_use_nulls = 1