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_build_outputs.py

@@ -217,7 +217,7 @@ def _png_chunks(data: bytes) -> list[str]:
 def _build_with_key_image(tmp_path: Path, image: Image.Image) -> None:
     root = make_delivery(2).write(tmp_path / "delivery")
     image.save(root / "CEUS_agent" / "002" / "U002_key.png", format="PNG")
-    run_build(write_config(tmp_path, root, 1, None), REPO_ROOT, NOW)
+    run_build(write_config(tmp_path, root, 1, None, None), REPO_ROOT, NOW)
 
 
 def _assert_key_image_skipped(tmp_path: Path, reason: str) -> None:
@@ -254,7 +254,7 @@ def test_key_image_palette_source_skips_case(tmp_path: Path) -> None:
 def test_key_image_not_png_skips_case(tmp_path: Path) -> None:
     root = make_delivery(2).write(tmp_path / "delivery")
     Image.new("RGB", (4, 4)).save(root / "CEUS_agent" / "002" / "U002_key.png", format="JPEG")
-    run_build(write_config(tmp_path, root, 1, None), REPO_ROOT, NOW)
+    run_build(write_config(tmp_path, root, 1, None, None), REPO_ROOT, NOW)
     _assert_key_image_skipped(tmp_path, "不是 PNG")
 
 
@@ -270,6 +270,7 @@ def test_write_library_rejects_unchecked_key_image(tmp_path: Path) -> None:
         ultrasound_report="",
         key_image_source=source,
         mr_report="",
+        ceus=None,
     )
     with pytest.raises(ValueError, match="check_key_image"):
         write_library(target, "b", "c", True, {}, False, (), None, [case])