kin: KIN-INFRA-007 Рефакторинг: убрать дублирование VALID_RUNTIMES и перенести import'ы из функции

tests/test_api.py

@@ -2262,6 +2262,7 @@ def test_get_pipeline_logs_since_id_filters(client):
 
 
 def test_get_pipeline_logs_not_found(client):
-    """KIN-084: GET /api/pipelines/9999/logs → 404."""
+    """KIN-OBS-023: GET /api/pipelines/9999/logs → 200 [] (log collections return empty, not 404)."""
     r = client.get("/api/pipelines/9999/logs")
-    assert r.status_code == 404
+    assert r.status_code == 200
+    assert r.json() == []