feat(bearing): 솔플레이트 규칙을 교각별 입력으로 바꾸고 도면 불러오기 제거 (C안)

- 받침 기준 카드, 도면 불러오기(xlsx·csv·dxf), 도면 참조 표·오버레이 제거
- 교각마다 솔플레이트 규칙 입력: 받침높이 H(솔플레이트 포함) 211, 교직 L 1000,
  교축 W 1100, 종단 기울기 S −0.5 % (기본값, 가정 표시)
- 중심 두께 T = ⌈22 + L·|S|/200⌉ 로 계산해 얇은 쪽 T2가 22 mm 이상이 되게 함
  (기본값 T 25, T2 22.5, h3 = H − T = 186)
- geometry·scene·SVG는 교각 규칙에서 만든 같은 솔플레이트 계획을 모든 받침에 사용

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

src/core/geometry.ts

@@ -5,7 +5,8 @@ import { type CopingRebarSettings, DEFAULT_COPING_REBAR, DEFAULT_TOP_SPLICE, typ
 import { type ColumnRebarSettings, DEFAULT_COLUMN_REBAR } from './rebar/column-settings';
 import { type FootingRebarSettings, DEFAULT_FOOTING_REBAR } from './rebar/footing-settings';
 import { layoutText, resolveRowCounts, rowLayout, type PileGeometry } from './piles';
-import type { PierInput, Row } from './types';
+import type { PierInput, Row, SolplatePlan } from './types';
+import { SOLPLATE_RULE_DEFAULT, solplatePlan } from './solplate-rule';
 import { type CopingGeom, P1_COPING_GEOM } from './coping-geom';
 
 /** Dimensions in m. Sources: intent.PR sheet (P1 rules) and spec.md §3 defaults. */
@@ -74,8 +75,8 @@ export interface BlockModel {
   padTop: number;
   /** Skew (deg, −90…90] of the bearing row against the perpendicular of the stretch axis; the block sides follow the row. */
   rowSkewDeg: number;
-  /** Solplate plan of this bearing (A, B, S, T, margin, h3), when the input gives it. */
-  plan?: { A: number; B: number; S: number; T: number; margin: number; h3: number };
+  /** Solplate of this bearing (C안, 2026-11-03): the pier's rule, the same for every bearing. */
+  plan: SolplatePlan;
 }
 
 /** Skew of a bearing row (deg) from the bearing azimuth and the stretch axis direction u (see {@link BlockModel.rowSkewDeg}). */
@@ -432,19 +433,15 @@ export function buildPier(input: PierInput): PierModel {
   const blocks: BlockModel[] = [];
   const bearingAz = new Map(input.bearings.map((r) => [r.no, r.azimuthDeg]));
   const skewOf = (no: number, k: number) => rowSkewDeg(bearingAz.get(no) ?? NaN, axis.segments[k].u);
-  // Solplate plans from the input (승인 2026-10-23); the 공통 규칙 default is T 30, margin 100, h3 181.
-  const rules = input.solplate ?? { T: 30, margin: 100, h3: 181 };
-  const planOf = (no: number) => {
-    const p = input.bearingPlans?.find((q) => q.no === no);
-    return p ? { A: p.A, B: p.B, S: p.S, T: rules.T, margin: rules.margin, h3: rules.h3 } : undefined;
-  };
+  // Solplate of every bearing from the pier's rule (C안, 2026-11-03): the same plan for each bearing.
+  const plan = solplatePlan(input.solplate ?? SOLPLATE_RULE_DEFAULT);
   frontPlaced.forEach((b) => {
     const bottom = segmentTop(segments, b.g);
-    blocks.push({ no: b.no, row: '전열', k: b.k, s: b.s, g: b.g, n: b.n, bottom, top: b.z - DIM.padThickness, padTop: b.z, rowSkewDeg: skewOf(b.no, b.k), plan: planOf(b.no) });
+    blocks.push({ no: b.no, row: '전열', k: b.k, s: b.s, g: b.g, n: b.n, bottom, top: b.z - DIM.padThickness, padTop: b.z, rowSkewDeg: skewOf(b.no, b.k), plan });
   });
   backPlaced.forEach((b) => {
     const bottom = b.z - h2;
-    blocks.push({ no: b.no, row: '후열', k: b.k, s: b.s, g: b.g, n: b.n, bottom, top: b.z - DIM.padThickness, padTop: b.z, rowSkewDeg: skewOf(b.no, b.k), plan: planOf(b.no) });
+    blocks.push({ no: b.no, row: '후열', k: b.k, s: b.s, g: b.g, n: b.n, bottom, top: b.z - DIM.padThickness, padTop: b.z, rowSkewDeg: skewOf(b.no, b.k), plan });
   });
 
   const blockHeightFront = blocks.find((b) => b.row === '전열')!.top - blocks.find((b) => b.row === '전열')!.bottom;