chore(rebar): Pier_T_rebar 작업 폴더 초기 구성 및 외부 의존 파일 통합

- Code\rebar_pipeline, review_pipeline, pier-program을 정션에서 실제 폴더로 전환
- Code\rhino_mcp 및 CLAUDE_rhino배경.md 추가, .mcp.json은 PYTHONPATH로 새 위치 사용
- pier-program 내부 .git 제거(이력은 backup\pier-program_20261028.bundle에 보관)
- worktree 가이드 반영(CLAUDE.local.md, HANDOFF.md)
- D:\Rhino-MCP 경로 참조를 새 위치로 치환

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

Code/교각모델링앱/engine/rhino/perturb.py

@@ -0,0 +1,34 @@
+"""Negative test helper: move selected objects of the open doc (inside Rhino 8, via runner).
+
+Globals: __rhino_doc__, PIER_ID, MOVES = [{"id": "BS08"} | {"mark": "P2"}, "d": [dx, dy, dz]}, ...],
+optional UNDO (move back by -d). A `mark` selector moves the first occurrence (sorted) of that mark,
+centreline and pipe together. Prints what was moved; raises if a selector matches nothing.
+"""
+import json
+
+import Rhino.Geometry as rg
+from Rhino.DocObjects import ObjectEnumeratorSettings
+
+doc = __rhino_doc__
+s = ObjectEnumeratorSettings()
+s.HiddenObjects = True
+s.LockedObjects = True
+objs = list(doc.Objects.GetObjectList(s))
+sign = -1 if globals().get("UNDO") else 1
+moved = []
+for mv in MOVES:
+    if "id" in mv:
+        sel = [o for o in objs if o.Attributes.GetUserString("id") == f"{PIER_ID}-{mv['id']}"]
+    else:
+        cand = [o for o in objs if o.Attributes.GetUserString("mark") == mv["mark"]
+                and (o.Attributes.GetUserString("id") or "").startswith(f"{PIER_ID}-R")]
+        first = sorted({o.Attributes.GetUserString("occurrence") for o in cand})[0] if cand else None
+        sel = [o for o in cand if o.Attributes.GetUserString("occurrence") == first]
+    if not sel:
+        raise RuntimeError(f"perturb: nothing matches {mv}")
+    dx, dy, dz = (sign * v for v in mv["d"])
+    xf = rg.Transform.Translation(dx, dy, dz)
+    for o in sel:
+        doc.Objects.Transform(o.Id, xf, True)
+        moved.append(o.Attributes.GetUserString("id"))
+print(json.dumps({"moved": moved, "undo": sign < 0}))