feat: 增加模拟测试肩宽参考展示

code/frontend/src/views/simulation/index.vue

@@ -292,6 +292,38 @@
 
               <!-- 背部中线参考 -->
               <line :x1="SVG_C7_X" :y1="SVG_C7_Y - 20" :x2="SVG_C7_X" :y2="SVG_S4_Y" stroke="rgba(99,102,241,0.35)" stroke-width="2" stroke-dasharray="8 6" stroke-linecap="round" />
+              <g v-if="currentShoulderWidthMm">
+                <line
+                  :x1="currentShoulderStartX"
+                  :y1="SVG_SHOULDER_Y"
+                  :x2="currentShoulderEndX"
+                  :y2="SVG_SHOULDER_Y"
+                  stroke="rgba(249,115,22,0.9)"
+                  stroke-width="3"
+                  stroke-linecap="round"
+                />
+                <line
+                  :x1="currentShoulderStartX"
+                  :y1="SVG_SHOULDER_Y - 8"
+                  :x2="currentShoulderStartX"
+                  :y2="SVG_SHOULDER_Y + 8"
+                  stroke="rgba(249,115,22,0.9)"
+                  stroke-width="2"
+                  stroke-linecap="round"
+                />
+                <line
+                  :x1="currentShoulderEndX"
+                  :y1="SVG_SHOULDER_Y - 8"
+                  :x2="currentShoulderEndX"
+                  :y2="SVG_SHOULDER_Y + 8"
+                  stroke="rgba(249,115,22,0.9)"
+                  stroke-width="2"
+                  stroke-linecap="round"
+                />
+                <text :x="SVG_C7_X" :y="SVG_SHOULDER_Y - 12" text-anchor="middle" font-size="10" fill="#c2410c" font-weight="700" font-family="system-ui, sans-serif">
+                  肩宽 {{ fmtNum(currentShoulderWidthCm) }} cm
+                </text>
+              </g>
               <line
                 :x1="SVG_C7_X + 18"
                 :y1="SVG_C7_Y"
@@ -479,6 +511,7 @@ const showBodyPhoto = false
 const SVG_C7_X = 200
 // 参考经络示意图：大椎位于颈后下缘、后正中线处，视觉上略低于头颈连接点
 const SVG_C7_Y = 112
+const SVG_SHOULDER_Y = SVG_C7_Y + 44
 const SVG_S4_Y = 520
 const DEFAULT_SPINE_LENGTH_MM = 450
 const MAX_VISUAL_SPINE_LENGTH_MM = 600
@@ -502,6 +535,21 @@ const visualScale = (SVG_S4_Y - SVG_C7_Y) / MAX_VISUAL_SPINE_LENGTH_MM
 const currentSpineEndY = computed(() =>
   Math.min(SVG_S4_Y, SVG_C7_Y + currentSpineLengthMm.value * visualScale)
 )
+const currentShoulderWidthMm = computed(() => {
+  const shoulderWidthCm = Number(pushData.value?.bodyData?.shoulderWidth ?? bodyForm.shoulderWidth)
+  return Number.isFinite(shoulderWidthCm) && shoulderWidthCm > 0
+    ? shoulderWidthCm * 10
+    : null
+})
+const currentShoulderWidthCm = computed(() =>
+  currentShoulderWidthMm.value ? currentShoulderWidthMm.value / 10 : null
+)
+const currentShoulderStartX = computed(() =>
+  currentShoulderWidthMm.value ? bodyToSvgX(-currentShoulderWidthMm.value / 2) : SVG_C7_X
+)
+const currentShoulderEndX = computed(() =>
+  currentShoulderWidthMm.value ? bodyToSvgX(currentShoulderWidthMm.value / 2) : SVG_C7_X
+)
 
 function bodyToSvg(offsetXmm, offsetYmm) {
   return {