feat(stock): compute_and_store + build_holdings_brief

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

stock/app/test_holdings_intel.py

@@ -273,3 +273,25 @@ def test_portfolio_health_empty_and_zero():
     h1 = hi.portfolio_health([{"ticker": "X", "quantity": 1, "avg_price": 0,
                                "current_price": 0, "is_krx": True}], total_cash=0)
     assert h1["total_pnl_rate"] == 0.0
+
+
+# ---- Phase 4 tests ----
+
+def test_compute_and_store_and_brief(monkeypatch):
+    import os, tempfile
+    from app import db
+    monkeypatch.setattr(db, "DB_PATH", os.path.join(tempfile.mkdtemp(), "stock.db"))
+    db.init_db()
+    monkeypatch.setattr(hi, "get_holdings", lambda: [
+        {"ticker": "005930", "name": "삼성전자", "quantity": 10, "avg_price": 1000,
+         "current_price": 1100, "pnl_rate": 10.0, "is_krx": True}])
+    ctx = _toy_ctx(("005930",))
+    monkeypatch.setattr(hi, "_load_ctx", lambda asof: ctx)
+    monkeypatch.setattr(hi, "_news_sentiment_map", lambda date: {})
+    monkeypatch.setattr(hi.db, "get_all_broker_cash", lambda: [{"broker": "kis", "cash": 500000}])
+    res = hi.compute_and_store(asof=ctx.asof, use_llm=False)
+    assert res["stored"] == 1
+    brief = hi.build_holdings_brief()
+    assert brief["holdings"][0]["ticker"] == "005930"
+    assert "portfolio_health" in brief
+    assert brief["holdings"][0]["action"] in ("add", "hold", "trim", "sell")