diff --git a/B07_DesignDetail/B07_DesignDetail_Cross_Overlay.ts b/B07_DesignDetail/B07_DesignDetail_Cross_Overlay.ts
index 23f3dbb4e..ee93e2f2e 100644
--- a/B07_DesignDetail/B07_DesignDetail_Cross_Overlay.ts
+++ b/B07_DesignDetail/B07_DesignDetail_Cross_Overlay.ts
@@ -19,10 +19,9 @@ import { appendFordOverlay } from "../B06_Section/B06_Section_UI_Cross_Ford";
 import { appendFordPavementOverlay } from "../B06_Section/B06_Section_UI_Cross_Ford_Pavement";
 import { appendUnderdrainOverlay } from "../B06_Section/B06_Section_UI_Cross_Underdrain";
 import { groundLine } from "../B06_Section/logic/B06_Section_Cross_Wall_Hatch_Geom";
-import {
-  appendCrossDesignOverlay,
-  appendPavementOverlay,
-} from "../B06_Section/B06_Section_UI_Cross_Design";
+// 허브(`_UI_Cross_Design`)가 아닌 그리기 파일에서 직접 — 허브는 상세 창 · CAD · API 를 끈다(574-1)
+import { appendCrossDesignOverlay } from "../B06_Section/B06_Section_UI_Cross_Design_Line";
+import { appendPavementOverlay } from "../B06_Section/B06_Section_UI_Cross_Design_Surface";
 import { appendRevetmentOverlay } from "../B06_Section/B06_Section_UI_Cross_Revetment";
 import { clipPointsToPolygon, clipSegment, pointInPolygon } from "../A00_Common/b_polygon_clip";
 
diff --git a/resources/tester/test_574_b07_extent_no_ui.py b/resources/tester/test_574_b07_extent_no_ui.py
new file mode 100644
index 000000000..beba7120f
--- /dev/null
+++ b/resources/tester/test_574_b07_extent_no_ui.py
@@ -0,0 +1,68 @@
+"""B07 횡단 덧그림 서버 묶음(`b07-extent`)이 화면 코드를 끌지 않음 (574-1).
+
+묶음 입구에서 값 import 를 따라가 닿는 TS 파일에 확인 창 · CAD · 상세 창 · API ·
+부품 상자 · B06 허브(`_UI_Cross_Design`)가 없어야 함. `import type` 은 지워지므로 뺌.
+"""
+
+import re
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+ENTRY = ROOT / "B07_DesignDetail" / "B07_DesignDetail_Cross_Extent_Node.ts"
+ALIAS = {"@util/": ROOT / "common_util", "@ui/": ROOT / "ui_template"}
+_IMPORT = re.compile(
+    r"^\s*(?:import|export)\s+(type\s+)?(?:([^;]*?)\s+from\s+)?[\"']([^\"']+)[\"']",
+    re.M | re.S,
+)
+FORBIDDEN = re.compile(
+    r"ui_template|_Cad|Cross_Detail|_Api_|B06_Section_UI_Cross_Design\.ts$|three"
+)
+
+
+def _type_only(names: str | None) -> bool:
+    inner = (names or "").strip()
+    if not inner.startswith("{"):
+        return False
+    parts = [p.strip() for p in inner.strip("{} \n").split(",") if p.strip()]
+    return bool(parts) and all(p.startswith("type ") for p in parts)
+
+
+def _resolve(origin: Path, spec: str) -> Path | None:
+    for prefix, base in ALIAS.items():
+        if spec.startswith(prefix):
+            target = base / spec[len(prefix) :]
+            break
+    else:
+        if not spec.startswith("."):
+            return None  # node:fs · 라이브러리
+        target = origin.parent / spec
+    for suffix in (".ts", ""):
+        path = Path(str(target) + suffix).resolve()
+        if path.is_file():
+            return path
+    return None
+
+
+def _reachable() -> set[Path]:
+    seen, queue = {ENTRY.resolve()}, [ENTRY.resolve()]
+    while queue:
+        current = queue.pop()
+        if current.suffix != ".ts":
+            continue
+        for match in _IMPORT.finditer(current.read_text(encoding="utf-8")):
+            type_kw, names, spec = match.groups()
+            if type_kw or _type_only(names):
+                continue
+            found = _resolve(current, spec)
+            if found and found not in seen:
+                seen.add(found)
+                queue.append(found)
+    return seen
+
+
+def test_extent_bundle_pulls_no_screen_code():
+    reached = _reachable()
+    names = {p.relative_to(ROOT).as_posix() for p in reached}
+    assert "B07_DesignDetail/B07_DesignDetail_Cross_Overlay.ts" in names  # 걷기가 실제로 돎
+    bad = sorted(n for n in names if FORBIDDEN.search(n))
+    assert not bad, bad