View the figure from a slight elevation and refine the leg-machine rollers

The default camera pitches down 10 degrees, so the floor reads as a
plane (drawn as a rectangle) and near/far contacts straddle it.
Elevation is pure presentation - IK pins solve in the flat authored
view and the posed body tilts, the same pattern as the orbit, so
authored canvas targets never go out of reach. The leg-extension
roller moves up onto the shin above the ankle and the leg-curl roller
tucks under the heel. Fixtures and reference test values regenerated
for the pitched camera.

Claude-Session: https://claude.ai/code/session_01LEoff8bXGBS83tK1c55Mf7

Exercise Library/Dead Bug/frames/frame-2.svg

@@ -1,15 +1,15 @@
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   <title>Dead Bug</title>
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-  <path id="arm_l" d="M 106.0 150.0 L 106.0 120.0 L 106.0 90.0" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_l" d="M 191.0 150.0 L 235.2 137.3 L 273.7 126.3 L 270.6 115.7" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="girdle" d="M 106.0 150.0 L 100.0 148.0 L 100.0 148.0" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="pelvisBar" d="M 191.0 150.0 L 185.0 148.0 L 185.0 148.0" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <rect x="16" y="150.8" width="288" height="10.4" rx="3" fill="none" stroke="#b9bec9" stroke-width="3"/>
+  <path id="arm_l" d="M 105.9 148.1 L 105.9 118.5 L 105.9 89.0" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_l" d="M 190.9 148.8 L 235.1 136.3 L 273.6 125.4 L 270.5 115.0" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 105.9 148.1 L 100.0 148.0 L 100.0 149.9" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="pelvisBar" d="M 190.9 148.8 L 185.0 148.0 L 185.0 149.2" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
   <path id="spine" d="M 185.0 148.0 Q 141.5 148.0 100.0 148.0" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_r" d="M 185.0 148.0 L 205.2 106.7 L 244.6 113.6 L 246.5 102.8" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_r" d="M 100.0 148.0 L 78.8 126.8 L 57.6 105.6" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <circle id="head" cx="80.4" cy="143.8" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
-  <line id="nose" x1="80.4" y1="133.8" x2="80.4" y2="126.8" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
+  <path id="leg_r" d="M 185.0 149.2 L 205.2 108.5 L 244.6 115.3 L 246.5 104.7" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 100.0 149.9 L 78.8 129.0 L 57.6 108.1" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle id="head" cx="80.4" cy="143.9" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
+  <line id="nose" x1="80.4" y1="133.9" x2="80.4" y2="127.0" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
   <g font-family="-apple-system, Helvetica, sans-serif" font-size="11" fill="#6b7180">
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     <text x="243" y="20">near</text>