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/render.py

@@ -0,0 +1,41 @@
+"""Region image of a converted drawing (DXF) for the "도면 보기" links of the candidate tables (stage C, 2026-10-19).
+
+The same drawing code as the reading aid Code/울산P1판독/dxftools.render, parameterised by a DXF path. Entities that touch the region are drawn
+black on white; Korean text shows as boxes (no font mapping), numbers are readable.
+"""
+import ezdxf
+from ezdxf import bbox
+
+
+def _in_region(e, x0, y0, x1, y1):
+    try:
+        b = bbox.extents([e], fast=True)
+    except Exception:
+        return False
+    return b.has_data and b.extmax.x >= x0 and b.extmin.x <= x1 and b.extmax.y >= y0 and b.extmin.y <= y1
+
+
+def render(dxf_path, cx, cy, half, out_png, px=1400, mark=True):
+    """PNG of the square [cx-half, cx+half] x [cy-half, cy+half]; a ring marks the point (cx, cy)."""
+    import matplotlib
+    matplotlib.use("Agg")
+    import matplotlib.pyplot as plt
+    from ezdxf.addons.drawing import Frontend, RenderContext
+    from ezdxf.addons.drawing.config import BackgroundPolicy, ColorPolicy, Configuration
+    from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
+    doc = ezdxf.readfile(dxf_path)
+    x0, x1, y0, y1 = cx - half, cx + half, cy - half, cy + half
+    keep = [e for e in doc.modelspace() if _in_region(e, x0, y0, x1, y1)]
+    fig = plt.figure(figsize=(px / 100, px / 100), dpi=100)
+    ax = fig.add_axes([0, 0, 1, 1])
+    cfg = Configuration(background_policy=BackgroundPolicy.WHITE, color_policy=ColorPolicy.BLACK)
+    Frontend(RenderContext(doc), MatplotlibBackend(ax), config=cfg).draw_entities(keep)
+    if mark:
+        ax.add_patch(plt.Circle((cx, cy), half * 0.04, fill=False, color="red", linewidth=2))
+    ax.set_xlim(x0, x1)
+    ax.set_ylim(y0, y1)
+    ax.set_aspect("equal")
+    ax.axis("off")
+    fig.savefig(out_png, facecolor="white")
+    plt.close(fig)
+    return out_png