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/Arm Curl/visual.svg

@@ -1,19 +1,19 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 180" fill="none">
   <title>Arm Curl</title>
-  <line x1="16" y1="156" x2="304" y2="156" stroke="#b9bec9" stroke-width="3" stroke-linecap="round"/>
+  <rect x="16" y="150.8" width="288" height="10.4" rx="3" fill="none" stroke="#b9bec9" stroke-width="3"/>
   <path d="M 116.0 134.0 L 150.0 134.0" stroke="#c5cad4" stroke-width="8" stroke-linecap="round" stroke-linejoin="round"/>
   <path d="M 136.0 52.0 L 164.0 70.0" stroke="#c5cad4" stroke-width="8" stroke-linecap="round" stroke-linejoin="round"/>
   <path d="M 164.0 70.0 L 164.0 128.0" stroke="#c5cad4" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_l" d="M 140.4 41.1 L 165.0 58.3 L 184.3 35.4" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_l" d="M 136.0 126.0 L 179.5 111.0 L 180.0 151.0 L 191.0 150.9" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="girdle" d="M 140.4 41.1 L 134.4 39.1 L 134.4 39.1" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="pelvisBar" d="M 136.0 126.0 L 130.0 124.0 L 130.0 124.0" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="spine" d="M 130.0 124.0 Q 130.8 80.5 134.4 39.1" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_r" d="M 130.0 124.0 L 173.8 110.1 L 176.0 150.0 L 187.0 149.4" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_r" d="M 134.4 39.1 L 159.0 56.3 L 178.3 33.4" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path d="M 181.3 40.4 L 181.3 28.4" stroke="#6b7180" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
-  <circle id="head" cx="137.2" cy="19.3" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
-  <line id="nose" x1="146.7" y1="22.4" x2="153.4" y2="24.6" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
+  <path id="leg_l" d="M 135.9 124.8 L 179.4 110.0 L 180.0 149.4 L 191.0 149.2" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_l" d="M 140.3 40.5 L 164.9 57.4 L 184.2 34.8" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 140.3 40.5 L 134.4 40.4 L 134.4 42.3" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="pelvisBar" d="M 135.9 124.8 L 130.0 124.0 L 130.0 125.2" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="spine" d="M 130.0 124.0 Q 130.8 81.1 134.4 40.4" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_r" d="M 130.0 125.2 L 173.8 111.5 L 176.0 150.8 L 187.0 150.2" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 134.4 42.3 L 159.0 59.3 L 178.3 36.6" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M 181.2 41.7 L 181.2 29.7" stroke="#6b7180" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle id="head" cx="137.2" cy="20.9" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
+  <line id="nose" x1="146.7" y1="24.0" x2="153.4" y2="26.1" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
   <g font-family="-apple-system, Helvetica, sans-serif" font-size="11" fill="#6b7180">
     <line x1="224" y1="16" x2="238" y2="16" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>
     <text x="243" y="20">near</text>