Give the figure real girdles, fix orbit pinning, add roller pads

Shoulder and pelvis widths grow to human-like proportions per profile
(shoulders wider than hips for neutral/male, reversed for female) and
are now drawn — bars across the attach points that read near-full-width
face-on and as a shoulder/hip nub in profile, so limbs visibly hang
from a torso instead of a point. Orbiting no longer re-solves IK pins
in the rotated view (pins are canvas targets in the authored camera):
the pose resolves first and the posed body rotates, which fixes hands
sticking to stale screen points mid-orbit (Cat-Cow, Bird Dog, Plank).
Leg Extension and Leg Curl swap their ankle bars for a machine roller
disc — a new `roller` prop riding the shin's press side. Fixtures
regenerated; both renderers updated in lockstep.

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

Exercise Library/Rotary/frames/frame-1.svg

@@ -4,11 +4,13 @@
   <path d="M 138.0 130.0 L 182.0 130.0" stroke="#c5cad4" stroke-width="8" stroke-linecap="round" stroke-linejoin="round"/>
   <path d="M 160.0 132.0 L 160.0 150.0" stroke="#c5cad4" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
   <path d="M 144.0 150.0 L 176.0 150.0" stroke="#c5cad4" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 167.1 37.0 L 160.0 37.0 L 152.9 37.0" stroke="#0d9488" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="pelvisBar" d="M 167.0 122.0 L 160.0 122.0 L 153.0 122.0" stroke="#0d9488" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
   <path id="spine" d="M 160.0 122.0 Q 160.0 78.5 160.0 37.0" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_l" d="M 164.5 37.0 L 186.1 47.3 L 208.7 52.5" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="arm_r" d="M 155.5 37.0 L 177.1 47.3 L 199.7 52.5" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_l" d="M 165.0 122.0 L 177.7 128.2 L 181.5 167.2 L 184.3 164.9" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
-  <path id="leg_r" d="M 155.0 122.0 L 142.3 128.2 L 138.5 167.2 L 135.7 164.9" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_l" d="M 167.1 37.0 L 188.7 47.3 L 211.3 52.5" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 152.9 37.0 L 174.5 47.3 L 197.2 52.5" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_l" d="M 167.0 122.0 L 179.7 128.2 L 183.5 167.2 L 186.3 164.9" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_r" d="M 153.0 122.0 L 140.3 128.2 L 136.5 167.2 L 133.7 164.9" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
   <path d="M 204.2 66.5 L 204.2 38.5" stroke="#6b7180" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
   <circle id="head" cx="160.0" cy="17.0" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
   <line id="nose" x1="170.0" y1="17.0" x2="173.7" y2="17.0" stroke="#3a3f4b" stroke-width="4" stroke-linecap="round"/>