fix: preserve OHLCV stale detection

tests/unit/test_ingestion_service.py

@@ -130,9 +130,34 @@ async def test_empty_fetch_with_stale_history_reports_stale(session):
     ]
     await svc.fetch_and_ingest(session, MockMarketDataProvider(ohlcv_data=old), "SATS")
 
-    result = await svc.fetch_and_ingest(session, MockMarketDataProvider(ohlcv_data=[]), "SATS")
+    # Incremental overlap means Alpaca can keep returning the final historical
+    # bar. That is still stale: the latest session did not advance.
+    result = await svc.fetch_and_ingest(
+        session,
+        MockMarketDataProvider(ohlcv_data=[old[-1]]),
+        "SATS",
+    )
 
     assert result.status == "stale"
-    assert result.records_ingested == 0
+    assert result.records_ingested == 1
     assert result.last_date is not None
     assert "renamed" in (result.message or "").lower() or "halted" in (result.message or "").lower()
+
+
+async def test_ingest_can_skip_sr_refresh_when_scanner_follows(session, monkeypatch):
+    await _add_ticker(session, "SCAN")
+    calls: list[str] = []
+
+    async def fake_refresh(db, symbol):
+        calls.append(symbol)
+
+    monkeypatch.setattr(svc, "_refresh_structural_sr", fake_refresh)
+    result = await svc.fetch_and_ingest(
+        session,
+        MockMarketDataProvider(ohlcv_data=_bars("SCAN", 3)),
+        "SCAN",
+        refresh_sr=False,
+    )
+
+    assert result.status == "complete"
+    assert calls == []