feat: REQ-028 add display_name to GET /v1/portfolios response

- Portfolio domain model + PortfolioItem schema에 display_name 필드 추가
- _SELECT_PORTFOLIO에 a.display_name JOIN 보강, _portfolio_to_item 매퍼 전달
- REQ-028 CHG-20260601-01/02: Implemented → Approved → Implemented
  - AC-13 신설 (display_name == joined assets.display_name)
- BAT-009 verification.md: AC-13 매핑 + augmentation history 누적
- REL-001 verification checklist 재실행 evidence 갱신 (368 PASSED, 로컬 smoke 5건 통과)
- tests/test_v1.py: dead 중복 GET /v1/assets 섹션 제거 (두 번째 동명 정의가 첫 번째를 override하던 잔재)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_v1.py

@@ -209,135 +209,6 @@ def test_auth_issue_service_token_generates_distinct_runtime_ids_per_token(monke
     assert first.json()["runtime_id"] != second.json()["runtime_id"]
 
 
-# ---------------------------------------------------------------------------
-# GET /v1/assets
-# ---------------------------------------------------------------------------
-
-def _make_portfolio(portfolio_id: str = "p1") -> Portfolio:
-    return Portfolio(
-        portfolio_id=portfolio_id,
-        broker="kis",
-        status="enabled",
-        name="Test",
-        symbol="005930",
-        tags=["tag1"],
-        cash_balance=1000.0,
-        asset_quantity=10.0,
-        price=50000.0,
-        profit_buffer=0.0,
-        active_strategy_id=None,
-        avabile_strategies=None,
-        owner_user_id="user-1",
-        managed_by_daemon_id="d-1",
-    )
-
-
-def test_v1_assets_requires_service_token(monkeypatch) -> None:
-    monkeypatch.setenv("PORTFOLIOHUB_DB_ENABLED", "false")
-    settings = _make_settings(db_enabled=False)
-    client = _make_app(settings)
-    resp = client.get("/v1/assets")
-    assert resp.status_code == 401
-
-
-def test_v1_assets_rejects_env_token() -> None:
-    from app.core.config import get_settings
-    settings = _make_settings(db_enabled=False, read_tokens_raw="env-token")
-    app = create_app(settings_factory=lambda: settings)
-    app.dependency_overrides[get_settings] = lambda: settings
-    client = TestClient(app)
-    resp = client.get("/v1/assets", headers=_service_token_header("env-token"))
-    assert resp.status_code == 403
-
-
-def test_v1_assets_returns_asset_list(monkeypatch) -> None:
-    settings = _make_app_db(monkeypatch)
-
-    portfolio = _make_portfolio()
-    principal = TokenPrincipal(
-        token_id="t1", user_id="user-1", permission="read",
-        token_type="service", runtime_id="rt-1", daemon_id="d-1"
-    )
-
-    mock_repo = MagicMock()
-    mock_repo.get_token_principal.return_value = principal
-    mock_repo.list_portfolios_with_strategies.return_value = [portfolio]
-    mock_repo.get_strategy_set.return_value = None
-
-    with patch("app.core.auth.get_portfolio_repository_from_settings", return_value=mock_repo), \
-         patch("app.api.v1_assets.get_portfolio_repository_from_settings", return_value=mock_repo):
-        client = _make_app(_make_settings(credential_encryption_key=_TEST_ENC_KEY))
-        resp = client.get("/v1/assets", headers=_service_token_header())
-
-    assert resp.status_code == 200
-    body = resp.json()
-    assert body["total"] == 1
-    item = body["assets"][0]
-    assert item["asset_id"] == "p1"
-    assert "market" not in item
-    assert item["broker_type"] == "kis"
-    assert item["cash"] == 1000.0
-    assert item["quantity"] == 10.0
-    assert item["strategy_params"] == {}
-    assert item["strategy_type"] is None
-    mock_repo.list_portfolios_with_strategies.assert_called_once_with(
-        owner_user_id="user-1",
-        include_disabled=False,
-        managed_by_daemon_id="d-1",
-        market=None,
-    )
-
-
-def test_v1_assets_status_filter(monkeypatch) -> None:
-    settings = _make_app_db(monkeypatch)
-    principal = TokenPrincipal(
-        token_id="t1", user_id="user-1", permission="read",
-        token_type="service", runtime_id="rt-1", daemon_id="d-1"
-    )
-    mock_repo = MagicMock()
-    mock_repo.get_token_principal.return_value = principal
-
-    with patch("app.core.auth.get_portfolio_repository_from_settings", return_value=mock_repo):
-        client = _make_app(_make_settings(credential_encryption_key=_TEST_ENC_KEY))
-        resp = client.get("/v1/assets?status=active", headers=_service_token_header())
-
-    assert resp.status_code == 403
-
-
-def test_v1_assets_strategy_params(monkeypatch) -> None:
-    """GET /v1/assets is admin catalog only — service token is rejected (strategy data is on GET /v1/portfolios)."""
-    settings = _make_app_db(monkeypatch)
-    principal = TokenPrincipal(
-        token_id="t1", user_id="user-1", permission="read",
-        token_type="service", runtime_id="rt-1", daemon_id="d-1"
-    )
-    mock_repo = MagicMock()
-    mock_repo.get_token_principal.return_value = principal
-
-    with patch("app.core.auth.get_portfolio_repository_from_settings", return_value=mock_repo):
-        client = _make_app(_make_settings(credential_encryption_key=_TEST_ENC_KEY))
-        resp = client.get("/v1/assets", headers=_service_token_header())
-
-    assert resp.status_code == 403
-
-
-def test_v1_assets_strategy_params_fallback_on_error(monkeypatch) -> None:
-    """GET /v1/assets is admin catalog only — service token is rejected."""
-    settings = _make_app_db(monkeypatch)
-    principal = TokenPrincipal(
-        token_id="t1", user_id="user-1", permission="read",
-        token_type="service", runtime_id="rt-1", daemon_id="d-1"
-    )
-    mock_repo = MagicMock()
-    mock_repo.get_token_principal.return_value = principal
-
-    with patch("app.core.auth.get_portfolio_repository_from_settings", return_value=mock_repo):
-        client = _make_app(_make_settings(credential_encryption_key=_TEST_ENC_KEY))
-        resp = client.get("/v1/assets", headers=_service_token_header())
-
-    assert resp.status_code == 403
-
-
 # ---------------------------------------------------------------------------
 # GET /v1/user_info
 # ---------------------------------------------------------------------------