fix(view): solplate reference shows centre T = 30 with the (−) and (+) side thicknesses (taper along the axis)

The solplate tapers along the bridge axis. T is the centre thickness (30), T1 the thickness on the 교각축 직각 (−) side
(38) and T2 on the (+) side (22); T1 + T2 = 2T. The table's T column had shown the (−) side value, so T is now 30 on every
row. A test checks T1 + T2 = 2T.

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

tests/bearing-ref.test.ts

@@ -23,6 +23,14 @@ describe('교량받침 reference (도면값, 읽기 전용, 1단계)', () => {
     }
   });
 
+  it('the solplate tapers along the axis: T1 (−측) + T2 (+측) = 2·T, with T = 30 at the centre', () => {
+    for (const r of SOLPLATE_REF) {
+      expect(r.T, `No ${r.no}`).toBe(SOLPLATE_T_RULE);
+      expect(r.T1 + r.T2, `No ${r.no}`).toBe(2 * r.T);
+      expect(r.T1, `No ${r.no}`).toBeGreaterThan(r.T2);
+    }
+  });
+
   it('the drawing EL.X − E sits a constant 0.211 m below the model coping top on all ten bearings (Q16 diagnostic)', () => {
     const m = buildPier(loadP1());
     const back = m.blocks.filter((b) => b.row === '후열');