fix: make SEC quality gating terminal-safe

tests/unit/test_rr_scanner_scan_all.py

@@ -131,3 +131,38 @@ async def test_scan_skips_ticker_with_incomplete_sec_fundamentals(
     monkeypatch.setattr(rr_scanner_service, "scan_ticker", _unexpected_scan)
 
     assert await rr_scanner_service.scan_all_tickers(session) == []
+
+
+async def test_scan_quality_failure_blocks_closed_and_emits_event(
+    session, monkeypatch
+):
+    session.add(Ticker(symbol="BLOCKED"))
+    await session.commit()
+
+    async def _boom(db):
+        raise ValueError("bad quality metadata")
+
+    async def _unexpected_scan(*args, **kwargs):
+        raise AssertionError("ticker was scanned without a quality decision")
+
+    events: list[dict] = []
+
+    async def _capture_event(**kwargs):
+        events.append(kwargs)
+
+    monkeypatch.setattr(
+        rr_scanner_service.fundamentals_quality_service,
+        "blocked_ticker_ids",
+        _boom,
+    )
+    monkeypatch.setattr(rr_scanner_service, "scan_ticker", _unexpected_scan)
+    monkeypatch.setattr(
+        rr_scanner_service.system_event_service,
+        "log_event_standalone",
+        _capture_event,
+    )
+
+    assert await rr_scanner_service.scan_all_tickers(session) == []
+    assert [event["code"] for event in events] == [
+        "fundamentals_quality_unavailable"
+    ]