diff --git a/tradein-mvp/backend/app/services/estimator.py b/tradein-mvp/backend/app/services/estimator.py
index d78e29e4..97ecdff2 100644
--- a/tradein-mvp/backend/app/services/estimator.py
+++ b/tradein-mvp/backend/app/services/estimator.py
@@ -32,6 +32,23 @@ from datetime import UTC, date, datetime, timedelta
 from typing import Any
 from uuid import uuid4
 
+from scraper_kit.providers.avito.imv import (
+    IMVAddressNotFoundError,
+    IMVAuthError,
+    IMVEvaluation,
+    IMVTransientError,
+    compute_imv_cache_key,
+    evaluate_via_imv,
+    save_imv_evaluation,
+)
+from scraper_kit.providers.cian.valuation import (
+    CianValuationResult,
+    estimate_via_cian_valuation,
+)
+from scraper_kit.providers.yandex.valuation import (
+    YandexValuationResult,
+    YandexValuationScraper,
+)
 from sqlalchemy import text
 from sqlalchemy.orm import Session
 
@@ -50,23 +67,8 @@ from app.services.dadata import clean_address as dadata_clean_address
 from app.services.geocoder import GeocodeResult, geocode
 from app.services.house_metadata import get_house_metadata
 from app.services.matching.houses import match_house_readonly, match_or_create_house
-from app.services.scrapers.avito_imv import (
-    IMVAddressNotFoundError,
-    IMVAuthError,
-    IMVEvaluation,
-    IMVTransientError,
-    compute_imv_cache_key,
-    evaluate_via_imv,
-    save_imv_evaluation,
-)
-from app.services.scrapers.cian_valuation import (
-    CianValuationResult,
-    estimate_via_cian_valuation,
-)
-from app.services.scrapers.yandex_valuation import (
-    YandexValuationResult,
-    YandexValuationScraper,
-)
+from app.services.scraper_adapters import RealScraperConfig
+from app.services.scraper_settings import get_scraper_delay
 
 logger = logging.getLogger(__name__)
 
@@ -422,7 +424,7 @@ async def _get_or_fetch_imv_cached(
                 cache_key[:8],
                 existing["recommended_price"],
             )
-            from app.services.scrapers.avito_imv import IMVGeo
+            from scraper_kit.providers.avito.imv import IMVGeo
 
             return IMVEvaluation(
                 cache_key=existing["cache_key"],
@@ -463,6 +465,7 @@ async def _get_or_fetch_imv_cached(
             renovation_type=renovation_type,
             has_balcony=has_balcony,
             has_loggia=has_loggia,
+            config=RealScraperConfig(),
         )
         save_imv_evaluation(db, result, estimate_id=estimate_id_for_link)
         logger.info(
@@ -495,6 +498,7 @@ async def _get_or_fetch_imv_cached(
                     renovation_type=renovation_type,
                     has_balcony=has_balcony,
                     has_loggia=has_loggia,
+                    config=RealScraperConfig(),
                 )
                 save_imv_evaluation(db, result, estimate_id=estimate_id_for_link)
                 logger.info(
@@ -595,14 +599,21 @@ async def _get_or_fetch_yandex_valuation_cached(
 
     # Fresh fetch
     try:
-        async with YandexValuationScraper() as scraper:
+        async with YandexValuationScraper(
+            RealScraperConfig(), delay_provider=get_scraper_delay
+        ) as scraper:
             result = await scraper.fetch_house_history(
                 address=address,
                 offer_category=offer_category,
                 offer_type=offer_type,
             )
-    except Exception as e:
-        logger.warning("yandex_valuation: fetch failed — estimator продолжает без Yandex: %s", e)
+    except Exception:
+        # logger.exception (не .warning) — намеренно: GlitchTip LoggingIntegration
+        # (main.py/scheduler_main.py) слушает event_level=logging.ERROR. WARNING,
+        # даже с exc_info=True, остаётся ниже порога и НЕ создаёт событие в GlitchTip
+        # (только breadcrumb) — config-wiring регрессия здесь была бы не видна
+        # мониторингу. .exception() логирует на ERROR + traceback (#2337).
+        logger.exception("yandex_valuation: fetch failed — estimator продолжает без Yandex")
         return None
 
     if result is None:
@@ -3120,6 +3131,7 @@ async def estimate_quality(
             cian_val = await _with_budget(
                 estimate_via_cian_valuation(
                     db,
+                    config=RealScraperConfig(),
                     address=geo.full_address,
                     total_area=payload.area_m2,
                     rooms_count=payload.rooms,
@@ -3140,8 +3152,13 @@ async def estimate_quality(
                     cian_val.sale_accuracy,
                     cian_val.external_house_id,
                 )
-        except Exception as exc:
-            logger.warning("cian_valuation: lookup failed (graceful): %s", exc)
+        except Exception:
+            # logger.exception (не .warning) — намеренно: GlitchTip LoggingIntegration
+            # (main.py/scheduler_main.py) слушает event_level=logging.ERROR. WARNING,
+            # даже с exc_info=True, остаётся ниже порога и НЕ создаёт событие в GlitchTip
+            # (только breadcrumb) — config-wiring регрессия здесь была бы не видна
+            # мониторингу. .exception() логирует на ERROR + traceback (#2337).
+            logger.exception("cian_valuation: lookup failed (graceful)")
 
     # ── Pre-fetch: same-building anchor comps ─────────────────────────────────
     # Guard mirrors the original in-block guard exactly; when false → ([], None).
diff --git a/tradein-mvp/backend/app/services/house_imv_backfill.py b/tradein-mvp/backend/app/services/house_imv_backfill.py
index 86260d19..c564e508 100644
--- a/tradein-mvp/backend/app/services/house_imv_backfill.py
+++ b/tradein-mvp/backend/app/services/house_imv_backfill.py
@@ -12,7 +12,10 @@ For each house:
   5. Mark houses.imv_status accordingly (ok/not_found/no_params/error/transient_error).
 
 Resumable: re-running picks up from where the previous run stopped.
-Deliberately NOT wired into scheduler — triggered manually via admin API.
+process_houses_imv_batch() IS wired into the scheduler: run_avito_city_sweep()
+(scrape_pipeline.py) calls it automatically as the final IMV-phase of every
+avito city sweep. backfill_house_imv() (batch/pending-status entrypoint) remains
+manual-only, triggered via admin API.
 """
 
 from __future__ import annotations
@@ -26,24 +29,30 @@ from dataclasses import dataclass, field
 from typing import Literal
 
 from scraper_kit.browser_fetcher import BrowserFetcher
-from sqlalchemy import text
-from sqlalchemy.orm import Session
 
-from app.core.config import settings
-
-# app.services.scrapers.avito_imv остаётся legacy — миграция валюационных
-# зависимостей (avito_imv/cian_valuation/yandex_valuation) выделена в отдельный,
-# более рискованный issue #2308 (см. epic #2277, issue #2310 Group C). Мигрируем
-# здесь только BrowserFetcher (#2310, выше) — avito_imv.evaluate_via_imv принимает
-# его исключительно как TYPE_CHECKING-аннотацию (duck-typed на fetch_json), поэтому
-# смена конкретного класса не требует правок avito_imv.py.
-from app.services.scrapers.avito_imv import (
+# #2337 (Group E4, эпик #2277): переключено на scraper_kit — тот же периметр риска,
+# что и estimator.py (обе точки читают/пишут house_imv_evaluations, #651 IMV/Yandex
+# blend). config=RealScraperConfig() обязателен для evaluate_via_imv — без него kit
+# молча уходит без прокси (прямое подключение) вместо настроенного (см. #2334).
+from scraper_kit.providers.avito.imv import (
     IMVAddressNotFoundError,
     IMVAuthError,
     IMVEvaluation,
     IMVTransientError,
     evaluate_via_imv,
 )
+from sqlalchemy import text
+from sqlalchemy.orm import Session
+
+from app.core.config import settings
+
+# RealScraperConfig НЕ импортируется на уровне модуля: app.services.scraper_adapters
+# сам импортирует backfill_house_imv/process_houses_imv_batch ИЗ этого модуля
+# (RealEnrichmentJobs-адаптер) — top-level import здесь создал бы circular import
+# (проверено: ImportError "cannot import name 'RealScraperConfig' from partially
+# initialized module" при импорте scraper_adapters первым). Ленивый import внутри
+# _process_one_house() ломает цикл — к моменту вызова оба модуля уже полностью
+# инициализированы.
 
 logger = logging.getLogger(__name__)
 
@@ -633,6 +642,8 @@ async def _process_one_house(
     BrowserFetcher на весь батч → evaluate_via_imv ходит через /fetch-json
     sidecar (обходит datacenter-403). None → curl_cffi-путь (как раньше).
     """
+    from app.services.scraper_adapters import RealScraperConfig  # lazy — см. import-блок
+
     hid: int = house["id"]
 
     params = pick_lot_params(db, hid)
@@ -651,7 +662,10 @@ async def _process_one_house(
 
     try:
         eval_result = await evaluate_via_imv(
-            address=enriched, browser_fetcher=browser_fetcher, **params
+            address=enriched,
+            browser_fetcher=browser_fetcher,
+            config=RealScraperConfig(),
+            **params,
         )
     except IMVAddressNotFoundError as exc:
         _mark_status(db, hid, "not_found", str(exc)[:200])
diff --git a/tradein-mvp/backend/tests/test_backfill_wave2.py b/tradein-mvp/backend/tests/test_backfill_wave2.py
index bfe72803..158aeb8b 100644
--- a/tradein-mvp/backend/tests/test_backfill_wave2.py
+++ b/tradein-mvp/backend/tests/test_backfill_wave2.py
@@ -436,8 +436,10 @@ class TestEnrichAddress:
 @pytest.mark.asyncio
 async def test_backfill_house_imv_ok_path():
     """Happy path: picks params, calls IMV, saves → saved=1."""
+    from scraper_kit.providers.avito.imv import IMVEvaluation, IMVGeo
+
     from app.services.house_imv_backfill import backfill_house_imv
-    from app.services.scrapers.avito_imv import IMVEvaluation, IMVGeo
+    from app.services.scraper_adapters import RealScraperConfig
 
     fake_geo = IMVGeo(geo_hash="tok", lat=56.83, lon=60.60)
     fake_eval = IMVEvaluation(
@@ -487,7 +489,7 @@ async def test_backfill_house_imv_ok_path():
             "app.services.house_imv_backfill.evaluate_via_imv",
             new_callable=AsyncMock,
             return_value=fake_eval,
-        ),
+        ) as mock_evaluate,
         patch("app.services.house_imv_backfill.save_imv_result") as mock_save,
     ):
         mock_mappings = MagicMock()
@@ -501,6 +503,12 @@ async def test_backfill_house_imv_ok_path():
     assert result.errors == 0
     assert result.status_counts.get("ok") == 1
     mock_save.assert_called_once()
+    # #2337 regression guard (Group E4): kit evaluate_via_imv silently drops the
+    # Avito proxy (direct connection) unless config=RealScraperConfig() is passed
+    # at the call site — assert_called_once() alone wouldn't catch someone
+    # dropping that kwarg later (same pattern as #2306 cian_price_history guards).
+    _, call_kwargs = mock_evaluate.call_args
+    assert isinstance(call_kwargs.get("config"), RealScraperConfig)
 
 
 @pytest.mark.asyncio
@@ -537,8 +545,9 @@ async def test_backfill_house_imv_no_params():
 @pytest.mark.asyncio
 async def test_backfill_house_imv_not_found():
     """IMVAddressNotFoundError → status not_found, no crash."""
+    from scraper_kit.providers.avito.imv import IMVAddressNotFoundError
+
     from app.services.house_imv_backfill import backfill_house_imv
-    from app.services.scrapers.avito_imv import IMVAddressNotFoundError
 
     fake_params = {
         "rooms": 2,
diff --git a/tradein-mvp/backend/tests/test_estimator_cian_integration.py b/tradein-mvp/backend/tests/test_estimator_cian_integration.py
index bcdc95ec..86ee65f2 100644
--- a/tradein-mvp/backend/tests/test_estimator_cian_integration.py
+++ b/tradein-mvp/backend/tests/test_estimator_cian_integration.py
@@ -1,4 +1,5 @@
 """Tests for Cian Valuation integration in estimator.py (Stage 9)."""
+
 import os
 
 # Settings requires DATABASE_URL at init time. Set dummy DSN before any app import.
@@ -27,9 +28,11 @@ def _fake_cian_result(**kwargs) -> CianValuationResult:
 
 # ── Cache-layer unit tests ────────────────────────────────────────────────────
 
+
 def test_cian_valuation_cache_key_deterministic() -> None:
     """compute_cache_key produces same hash for identical inputs."""
     from app.services.scrapers.cian_valuation import compute_cache_key
+
     k1 = compute_cache_key("ЕКБ, ул. Учителей, 18", 38.8, 1, 4, "cosmetic", "sale")
     k2 = compute_cache_key("ЕКБ, ул. Учителей, 18", 38.8, 1, 4, "cosmetic", "sale")
     assert k1 == k2
@@ -38,6 +41,7 @@ def test_cian_valuation_cache_key_deterministic() -> None:
 
 def test_cian_valuation_cache_key_differs_for_different_inputs() -> None:
     from app.services.scrapers.cian_valuation import compute_cache_key
+
     a = compute_cache_key("addr A", 38.8, 1, 4, "cosmetic", "sale")
     b = compute_cache_key("addr B", 38.8, 1, 4, "cosmetic", "sale")
     c = compute_cache_key("addr A", 50.0, 1, 4, "cosmetic", "sale")
@@ -47,6 +51,7 @@ def test_cian_valuation_cache_key_differs_for_different_inputs() -> None:
 
 # ── estimate_via_cian_valuation graceful-degradation tests ───────────────────
 
+
 def test_estimate_via_cian_returns_none_when_no_cookies() -> None:
     """estimate_via_cian_valuation returns None when no cookies in DB (graceful)."""
     db = MagicMock()
@@ -59,6 +64,7 @@ def test_estimate_via_cian_returns_none_when_no_cookies() -> None:
             return_value=None,  # no cookies stored
         ):
             from app.services.scrapers.cian_valuation import estimate_via_cian_valuation
+
             result = await estimate_via_cian_valuation(
                 db,
                 address="ЕКБ, ул. Учителей, 18",
@@ -75,9 +81,11 @@ def test_estimate_via_cian_returns_none_when_no_cookies() -> None:
 
 # ── Estimator integration tests ───────────────────────────────────────────────
 
+
 def _make_fake_geo():
     """Return GeocodeResult with provider field (not source)."""
     from app.services.geocoder import GeocodeResult
+
     return GeocodeResult(
         lat=56.838,
         lon=60.595,
@@ -88,6 +96,7 @@ def _make_fake_geo():
 
 def _make_payload():
     from app.schemas.trade_in import TradeInEstimateInput
+
     return TradeInEstimateInput(
         address="ЕКБ, ул. Учителей, 18",
         area_m2=38.8,
@@ -127,6 +136,7 @@ def _common_patches(cian_mock):
 def test_estimator_includes_cian_valuation_when_available() -> None:
     """When cian_valuation returns result with sale_price_rub, sources_used includes it."""
     from app.services.estimator import estimate_quality
+    from app.services.scraper_adapters import RealScraperConfig
 
     db = MagicMock()
     payload = _make_payload()
@@ -135,24 +145,29 @@ def test_estimator_includes_cian_valuation_when_available() -> None:
 
     async def _run() -> None:
         with (
-            patch("app.services.estimator.geocode",
-                  new=AsyncMock(return_value=_make_fake_geo())),
-            patch("app.services.estimator.get_house_metadata",
-                  new=AsyncMock(return_value=None)),
+            patch("app.services.estimator.geocode", new=AsyncMock(return_value=_make_fake_geo())),
+            patch("app.services.estimator.get_house_metadata", new=AsyncMock(return_value=None)),
             patch("app.services.estimator._fetch_analogs", return_value=([], False, "W")),
             patch("app.services.estimator._fetch_deals", return_value=[]),
-            patch("app.services.estimator._get_or_fetch_imv_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator._get_or_fetch_yandex_valuation_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator.estimate_via_cian_valuation",
-                  new=cian_mock),
-            patch("app.services.estimator._get_asking_sold_ratio",
-                  return_value=(None, None)),
+            patch(
+                "app.services.estimator._get_or_fetch_imv_cached", new=AsyncMock(return_value=None)
+            ),
+            patch(
+                "app.services.estimator._get_or_fetch_yandex_valuation_cached",
+                new=AsyncMock(return_value=None),
+            ),
+            patch("app.services.estimator.estimate_via_cian_valuation", new=cian_mock),
+            patch("app.services.estimator._get_asking_sold_ratio", return_value=(None, None)),
         ):
             result = await estimate_quality(payload, db)
 
         assert "cian_valuation" in result.sources_used
+        # #2337 regression guard (Group E4): estimate_via_cian_valuation's config
+        # param is MANDATORY on the kit function (TypeError if omitted) — but this
+        # mock wouldn't catch a missing/None config kwarg. Explicit check mirrors
+        # the #2306 cian_price_history guard pattern for this higher-stakes path.
+        _, call_kwargs = cian_mock.call_args
+        assert isinstance(call_kwargs.get("config"), RealScraperConfig)
 
     anyio.run(_run)
 
@@ -167,20 +182,19 @@ def test_estimator_graceful_when_cian_returns_none() -> None:
 
     async def _run() -> None:
         with (
-            patch("app.services.estimator.geocode",
-                  new=AsyncMock(return_value=_make_fake_geo())),
-            patch("app.services.estimator.get_house_metadata",
-                  new=AsyncMock(return_value=None)),
+            patch("app.services.estimator.geocode", new=AsyncMock(return_value=_make_fake_geo())),
+            patch("app.services.estimator.get_house_metadata", new=AsyncMock(return_value=None)),
             patch("app.services.estimator._fetch_analogs", return_value=([], False, "W")),
             patch("app.services.estimator._fetch_deals", return_value=[]),
-            patch("app.services.estimator._get_or_fetch_imv_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator._get_or_fetch_yandex_valuation_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator.estimate_via_cian_valuation",
-                  new=cian_mock),
-            patch("app.services.estimator._get_asking_sold_ratio",
-                  return_value=(None, None)),
+            patch(
+                "app.services.estimator._get_or_fetch_imv_cached", new=AsyncMock(return_value=None)
+            ),
+            patch(
+                "app.services.estimator._get_or_fetch_yandex_valuation_cached",
+                new=AsyncMock(return_value=None),
+            ),
+            patch("app.services.estimator.estimate_via_cian_valuation", new=cian_mock),
+            patch("app.services.estimator._get_asking_sold_ratio", return_value=(None, None)),
         ):
             result = await estimate_quality(payload, db)
 
@@ -200,20 +214,19 @@ def test_estimator_graceful_when_cian_raises() -> None:
 
     async def _run() -> None:
         with (
-            patch("app.services.estimator.geocode",
-                  new=AsyncMock(return_value=_make_fake_geo())),
-            patch("app.services.estimator.get_house_metadata",
-                  new=AsyncMock(return_value=None)),
+            patch("app.services.estimator.geocode", new=AsyncMock(return_value=_make_fake_geo())),
+            patch("app.services.estimator.get_house_metadata", new=AsyncMock(return_value=None)),
             patch("app.services.estimator._fetch_analogs", return_value=([], False, "W")),
             patch("app.services.estimator._fetch_deals", return_value=[]),
-            patch("app.services.estimator._get_or_fetch_imv_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator._get_or_fetch_yandex_valuation_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator.estimate_via_cian_valuation",
-                  new=cian_mock),
-            patch("app.services.estimator._get_asking_sold_ratio",
-                  return_value=(None, None)),
+            patch(
+                "app.services.estimator._get_or_fetch_imv_cached", new=AsyncMock(return_value=None)
+            ),
+            patch(
+                "app.services.estimator._get_or_fetch_yandex_valuation_cached",
+                new=AsyncMock(return_value=None),
+            ),
+            patch("app.services.estimator.estimate_via_cian_valuation", new=cian_mock),
+            patch("app.services.estimator._get_asking_sold_ratio", return_value=(None, None)),
         ):
             result = await estimate_quality(payload, db)
 
@@ -235,20 +248,19 @@ def test_estimator_cian_result_no_sale_price_not_added() -> None:
 
     async def _run() -> None:
         with (
-            patch("app.services.estimator.geocode",
-                  new=AsyncMock(return_value=_make_fake_geo())),
-            patch("app.services.estimator.get_house_metadata",
-                  new=AsyncMock(return_value=None)),
+            patch("app.services.estimator.geocode", new=AsyncMock(return_value=_make_fake_geo())),
+            patch("app.services.estimator.get_house_metadata", new=AsyncMock(return_value=None)),
             patch("app.services.estimator._fetch_analogs", return_value=([], False, "W")),
             patch("app.services.estimator._fetch_deals", return_value=[]),
-            patch("app.services.estimator._get_or_fetch_imv_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator._get_or_fetch_yandex_valuation_cached",
-                  new=AsyncMock(return_value=None)),
-            patch("app.services.estimator.estimate_via_cian_valuation",
-                  new=cian_mock),
-            patch("app.services.estimator._get_asking_sold_ratio",
-                  return_value=(None, None)),
+            patch(
+                "app.services.estimator._get_or_fetch_imv_cached", new=AsyncMock(return_value=None)
+            ),
+            patch(
+                "app.services.estimator._get_or_fetch_yandex_valuation_cached",
+                new=AsyncMock(return_value=None),
+            ),
+            patch("app.services.estimator.estimate_via_cian_valuation", new=cian_mock),
+            patch("app.services.estimator._get_asking_sold_ratio", return_value=(None, None)),
         ):
             result = await estimate_quality(payload, db)
 
diff --git a/tradein-mvp/backend/tests/test_estimator_imv_integration.py b/tradein-mvp/backend/tests/test_estimator_imv_integration.py
index 6d17417f..0996f8e8 100644
--- a/tradein-mvp/backend/tests/test_estimator_imv_integration.py
+++ b/tradein-mvp/backend/tests/test_estimator_imv_integration.py
@@ -32,7 +32,9 @@ def test_imv_repair_map() -> None:
 
 def test_imv_cache_miss_calls_evaluate() -> None:
     """Cache miss → calls evaluate_via_imv + save_imv_evaluation."""
-    from app.services.scrapers.avito_imv import IMVEvaluation, IMVGeo
+    from scraper_kit.providers.avito.imv import IMVEvaluation, IMVGeo
+
+    from app.services.scraper_adapters import RealScraperConfig
 
     mock_db = MagicMock()
     mock_db.execute.return_value.mappings.return_value.first.return_value = None  # no cache hit
@@ -56,11 +58,9 @@ def test_imv_cache_miss_calls_evaluate() -> None:
     )
 
     async def _run() -> None:
+        mock_evaluate = AsyncMock(return_value=fake_result)
         with (
-            patch(
-                "app.services.estimator.evaluate_via_imv",
-                new=AsyncMock(return_value=fake_result),
-            ),
+            patch("app.services.estimator.evaluate_via_imv", new=mock_evaluate),
             patch("app.services.estimator.save_imv_evaluation", return_value=1),
         ):
             result = await _get_or_fetch_imv_cached(
@@ -77,6 +77,12 @@ def test_imv_cache_miss_calls_evaluate() -> None:
             )
         assert result is not None
         assert result.recommended_price == 6_290_000
+        # #2337 regression guard (Group E4): kit evaluate_via_imv silently drops the
+        # Avito proxy (direct connection) unless config=RealScraperConfig() is passed
+        # at the call site — assert_called alone wouldn't catch someone dropping
+        # that kwarg later (same pattern as #2306 cian_price_history guards).
+        _, call_kwargs = mock_evaluate.call_args
+        assert isinstance(call_kwargs.get("config"), RealScraperConfig)
 
     anyio.run(_run)
 
diff --git a/tradein-mvp/backend/tests/test_estimator_yandex_integration.py b/tradein-mvp/backend/tests/test_estimator_yandex_integration.py
index f95aadb4..0803ab8f 100644
--- a/tradein-mvp/backend/tests/test_estimator_yandex_integration.py
+++ b/tradein-mvp/backend/tests/test_estimator_yandex_integration.py
@@ -9,6 +9,11 @@ from datetime import date
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
+from scraper_kit.providers.yandex.valuation import (
+    ValuationHistoryItem,
+    ValuationHouseMeta,
+    YandexValuationResult,
+)
 
 from app.services.estimator import (
     YANDEX_VALUATION_CACHE_TTL_HOURS,
@@ -16,11 +21,7 @@ from app.services.estimator import (
     _save_yandex_history_items,
     _yandex_valuation_cache_key,
 )
-from app.services.scrapers.yandex_valuation import (
-    ValuationHistoryItem,
-    ValuationHouseMeta,
-    YandexValuationResult,
-)
+from app.services.scraper_settings import get_scraper_delay
 
 
 def _sample_result(address: str = "Екатеринбург, ул. Учителей, 18") -> YandexValuationResult:
@@ -108,6 +109,8 @@ async def test_cache_hit_returns_deserialized_result():
 @pytest.mark.asyncio
 async def test_cache_miss_triggers_fetch_and_persist():
     """On cache miss, fetch via scraper + INSERT into external_valuations."""
+    from app.services.scraper_adapters import RealScraperConfig
+
     db = MagicMock()
     db.execute.return_value.mappings.return_value.first.return_value = None  # miss
     fresh = _sample_result()
@@ -115,10 +118,19 @@ async def test_cache_miss_triggers_fetch_and_persist():
     fake_scraper.__aenter__ = AsyncMock(return_value=fake_scraper)
     fake_scraper.__aexit__ = AsyncMock(return_value=False)
     fake_scraper.fetch_house_history = AsyncMock(return_value=fresh)
-    with patch("app.services.estimator.YandexValuationScraper", return_value=fake_scraper):
+    with patch(
+        "app.services.estimator.YandexValuationScraper", return_value=fake_scraper
+    ) as mock_scraper_cls:
         out = await _get_or_fetch_yandex_valuation_cached(db, address=fresh.address)
     assert out is fresh
     fake_scraper.fetch_house_history.assert_awaited_once()
+    # #2337 regression guard (Group E4): kit YandexValuationScraper requires config=
+    # (TypeError if omitted) AND silently falls back to a hardcoded 5.0s throttle
+    # instead of the DB-configured anti-ban delay unless delay_provider= is passed.
+    # assert_called alone wouldn't catch either kwarg being dropped later.
+    call_args, call_kwargs = mock_scraper_cls.call_args
+    assert isinstance(call_args[0], RealScraperConfig)
+    assert call_kwargs.get("delay_provider") is get_scraper_delay
     # 2 DB calls: 1 SELECT (miss) + 1 INSERT/UPSERT
     assert db.execute.call_count >= 2