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/Hollow Body Hold/frames/frame-2.svg

@@ -1,14 +1,14 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 180" fill="none">
   <title>Hollow Body Hold</title>
-  <line x1="16" y1="156" x2="304" y2="156" stroke="#b9bec9" stroke-width="3" stroke-linecap="round"/>
-  <path id="leg_l" d="M 191.0 150.0 L 236.0 140.4 L 275.1 132.1 L 272.8 121.4" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="girdle" d="M 108.8 131.1 L 102.8 129.1 L 102.8 129.1" stroke="#0d9488" 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="#0d9488" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="spine" d="M 185.0 148.0 Q 140.6 148.4 102.8 129.1" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_r" d="M 185.0 148.0 L 230.0 138.4 L 269.1 130.1 L 266.8 119.4" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_r" d="M 102.8 129.1 L 75.6 116.5 L 48.4 103.8" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <circle id="head" cx="87.4" cy="116.3" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
-  <line id="nose" x1="93.9" y1="108.6" x2="98.4" y2="103.3" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
+  <rect x="16" y="150.8" width="288" height="10.4" rx="3" fill="none" stroke="#b9bec9" stroke-width="3"/>
+  <path id="leg_l" d="M 190.9 148.8 L 235.9 139.3 L 275.0 131.1 L 272.7 120.5" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 108.7 129.5 L 102.8 129.4 L 102.8 131.3" stroke="#0d9488" 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="#0d9488" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="spine" d="M 185.0 148.0 Q 140.6 148.4 102.8 129.4" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_r" d="M 185.0 149.2 L 230.0 139.8 L 269.1 131.6 L 266.8 121.0" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 102.8 131.3 L 75.6 118.9 L 48.4 106.4" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle id="head" cx="87.4" cy="116.8" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
+  <line id="nose" x1="93.9" y1="109.2" x2="98.4" y2="103.9" 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>