fix: [fire-shutter] 모터 외경 확대 + 슬랫 롤 외경 바깥 이격

- 모터 반경: shaftR*0.9 → shaftR*1.1 (외경 확대)
- 이격 기준: shaftR → rollR (슬랫 롤 외경 기준)
- 간격: rollR + mR + 10*sc (절대 간섭 없음)

resources/views/rd/fire-shutter-drawing/index.blade.php

@@ -1494,10 +1494,10 @@ function renderSbSide() {
                 }).join('')}
             ` : ''}
             ${b.showMotor ? (() => {
-                const mR = shaftR * 0.9;
-                const gap = shaftR + mR + 6*sc;
+                const mR = shaftR * 1.1;
+                const gap = rollR + mR + 10*sc;
                 const mCx = shaftCx + gap;
-                const mCy = shaftCy + 5*sc;
+                const mCy = shaftCy;
                 return `
                 <circle cx="${mCx}" cy="${mCy}" r="${mR}" fill="#2563eb" opacity="0.25" stroke="#3b82f6" stroke-width="1.5" stroke-dasharray="4 2"/>
                 <text x="${mCx}" y="${mCy+3}" fill="#3b82f6" font-size="8" font-weight="900" text-anchor="middle" font-family="Pretendard" opacity="0.6">M</text>