feat(build): 任务书 02 第四阶段代码——build 装入 CEUS 结果

- build.yaml 加必填字段 ceus_run（CEUS 运行目录或 null）。
- 不为 null 时按视频号找结果；在 failed.csv 里或缺结果目录的整例跳过，记 C15；关键帧图沿用 C14 检查。
- 资料库超声一路加 keyframes/<槽位>.png（去附加数据重编码）和 tic.json（白名单逐字段构造：
  四条曲线的拟合成败与 R²、灌注指标、紫圈曲线是否可用、7 个槽位的定位与视频时间或原因）。
- manifest 的 CEUS 来源写运行号；泄露扫描已覆盖 tic.json，补命中测试。
- 真实构建等配准改完、全量 CEUS 运行之后再做。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_ceus_quant.py

@@ -13,6 +13,7 @@ import csv
 import importlib.util
 import json
 from collections.abc import Callable, Mapping, Sequence
+from datetime import datetime
 from pathlib import Path
 from types import ModuleType
 from typing import Any
@@ -23,9 +24,12 @@ import numpy.typing as npt
 import pytest
 import yaml
 
+from cadx.answers import read_aliases
+from cadx.build import run_build
 from cadx.ceus import ANCHOR_SLOTS, LognormalParameters, evaluate_lognormal
+from cadx.library import list_aliases, read_ultrasound
 from conftest import CEUS_YAML
-from fake_delivery import make_delivery
+from fake_delivery import REPO_ROOT, make_delivery, write_config
 
 _SCRIPT = Path(__file__).resolve().parents[1] / "scripts" / "ceus_quant.py"
 _WIDTH, _HEIGHT, _SPLIT = 400, 200, 200
@@ -177,6 +181,36 @@ def test_run_writes_outputs_and_failed_case(
     assert "U001" not in out and "U002" not in out
 
 
+def test_build_reads_real_run_layout(
+    tmp_path: Path,
+    setup: tuple[ModuleType, _CountingSegment, dict[str, Any], Callable[[str], None]],
+) -> None:
+    """build 读这个脚本真实写出的运行目录：第 1 例带 tic.json 和关键帧进库，第 2 例记 C15。"""
+    module, _, document, next_run_id = setup
+    next_run_id("run-a")
+    module.main(["--config", str(_write_config(tmp_path, document, "ceus.yaml"))])
+    run_dir = tmp_path / "runs" / "run-a"
+    delivery_dir = Path(document["paths"]["delivery_dir"])
+    build_dir = tmp_path / "build"
+    build_dir.mkdir()
+    result = run_build(
+        write_config(build_dir, delivery_dir, 1, None, run_dir),
+        REPO_ROOT,
+        datetime(2026, 10, 16, 12, 0, 0).astimezone(),
+    )
+    assert [r.case_no for r in read_aliases(result.answers_dir)] == ["001"]
+    assert result.skipped_by_check == {"C15": 1}
+    (alias,) = list_aliases(result.library_dir)
+    route = read_ultrasound(result.library_dir, alias)
+    summary = json.loads((run_dir / "U001" / "summary.json").read_text(encoding="utf-8"))
+    located = {s for s, a in summary["anchor_frames"].items() if a["status"] == "ok"}
+    assert set(route.keyframes) == located
+    assert route.tic is not None
+    assert set(route.tic) == {"fits", "perfusion_metrics", "pan_curve_usable", "keyframes"}
+    assert route.tic["keyframes"]["F1"]["video_time_s"] == pytest.approx(15.0, abs=0.1)
+    assert route.tic["keyframes"]["F2"]["located"] is False
+
+
 def test_unreadable_video_fails_at_step_1_and_next_case_runs(
     tmp_path: Path,
     monkeypatch: pytest.MonkeyPatch,