fix: refresh latest regime trading session

tests/unit/test_regime_monitor.py

@@ -169,6 +169,59 @@ async def test_prior_v2_snapshot_is_immutable_without_explicit_rebuild(db_sessio
     assert row.total_score == 10.0
 
 
+@pytest.mark.asyncio
+async def test_routine_can_refresh_latest_trading_session_after_civil_day_rolls(
+    monkeypatch,
+):
+    latest_date = date(2020, 1, 3)
+    config = copy.deepcopy(DEFAULT_CONFIG)
+    prices = {
+        "SMH": [(latest_date, 100.0)],
+        "QQQ": [(latest_date, 100.0)],
+        "SPY": [(latest_date, 100.0)],
+    }
+    rewrites: list[bool] = []
+
+    async def fake_config(_db):
+        return config
+
+    async def fake_overrides(_db):
+        return {"locked": True, "fetched_at": None, "effective_date": None}
+
+    async def fake_prices(_config, _start, _end):
+        return prices
+
+    async def fake_fred(_series_id, _start, _end):
+        return None
+
+    async def fake_breadth(_db, _symbols, window, min_tickers):
+        return {}, {}
+
+    async def fake_latest(_db):
+        return object(), {"methodology": "v2"}
+
+    async def fake_upsert(_db, result, *, rewrite_existing_v2):
+        rewrites.append(rewrite_existing_v2)
+        return True, result
+
+    class FakeDB:
+        async def commit(self):
+            return None
+
+    monkeypatch.setattr(rms, "get_regime_config", fake_config)
+    monkeypatch.setattr(rms, "get_fundamental_overrides", fake_overrides)
+    monkeypatch.setattr(rms, "_fetch_prices", fake_prices)
+    monkeypatch.setattr(rms, "_fetch_fred_series", fake_fred)
+    monkeypatch.setattr(rms.breadth_service, "compute_breadth_details", fake_breadth)
+    monkeypatch.setattr(rms, "_latest_v2_row", fake_latest)
+    monkeypatch.setattr(rms, "_upsert_snapshot", fake_upsert)
+
+    result = await rms.update_regime_monitor(FakeDB())
+
+    assert result["date"] == latest_date.isoformat()
+    assert rewrites == [True]
+
+
 def test_compute_index_uses_one_max_price_vote_and_has_no_combined_score():
     end = date(2026, 6, 26)
     rising = [100.0 + index * 0.2 for index in range(700)]