Add the hinge pattern: Deadlift, RDL, Glute Bridge, Hip Thrust, Back Extension

The biggest hole in the coverage matrix - the hinge had zero entries in
any modality. Deadlift and Romanian Deadlift are the library's first
standing (camera.zoom) and first barbell motions.

Claude-Session: https://claude.ai/code/session_01HJDQQDA9QdP8zByg43H5v3

Exercise Library/Glute Bridge/frames/frame-1.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 180" fill="none">
+  <title>Glute Bridge</title>
+  <path d="M 42.2 161.0 L 235.6 161.0 L 235.6 150.6 L 42.2 150.6 Z" fill="none" stroke="#b9bec9" stroke-width="3" stroke-linejoin="round"/>
+  <path id="arm_l" d="M 88.9 144.1 L 118.8 146.1 L 148.8 148.2" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_l" d="M 173.9 144.8 L 203.1 109.8 L 209.0 148.7 L 219.7 146.2" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 88.9 144.1 L 83.0 144.0 L 83.0 145.9" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="pelvisBar" d="M 173.9 144.8 L 168.0 144.0 L 168.0 145.2" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="spine" d="M 168.0 144.0 Q 124.5 144.0 83.0 144.0" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 83.0 145.9 L 112.9 148.0 L 142.9 150.0" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_r" d="M 168.0 145.2 L 197.5 110.5 L 205.0 149.2 L 215.6 146.2" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle id="head" cx="64.2" cy="137.3" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
+  <line id="nose" x1="66.7" y1="127.6" x2="68.4" y2="120.9" 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>
+    <line x1="273" y1="16" x2="287" y2="16" stroke="#a9afba" stroke-width="4" stroke-linecap="round"/>
+    <text x="292" y="20">far</text>
+  </g>
+</svg>

Exercise Library/Glute Bridge/frames/frame-2.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 180" fill="none">
+  <title>Glute Bridge</title>
+  <path d="M 42.2 160.6 L 235.6 160.6 L 235.6 150.2 L 42.2 150.2 Z" fill="none" stroke="#b9bec9" stroke-width="3" stroke-linejoin="round"/>
+  <path id="arm_l" d="M 99.1 147.4 L 128.7 142.2 L 158.2 137.1" stroke="#a9afba" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_l" d="M 177.9 116.8 L 223.6 111.6 L 209.0 148.3 L 219.6 151.4" stroke="#86cfc5" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="girdle" d="M 99.1 147.4 L 93.2 147.3 L 93.2 149.2" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="pelvisBar" d="M 177.9 116.8 L 172.0 116.0 L 172.0 117.2" stroke="#3a3f4b" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="spine" d="M 172.0 116.0 Q 130.6 129.3 93.2 147.3" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="leg_r" d="M 172.0 117.2 L 217.6 111.3 L 205.0 148.7 L 215.7 151.2" stroke="#0d9488" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <path id="arm_r" d="M 93.2 149.2 L 122.8 144.1 L 152.3 139.0" stroke="#3a3f4b" stroke-width="6" stroke-linecap="round" stroke-linejoin="round"/>
+  <circle id="head" cx="75.0" cy="139.3" r="10" fill="white" stroke="#3a3f4b" stroke-width="6"/>
+  <line id="nose" x1="78.1" y1="129.8" x2="80.2" y2="123.2" 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>
+    <line x1="273" y1="16" x2="287" y2="16" stroke="#a9afba" stroke-width="4" stroke-linecap="round"/>
+    <text x="292" y="20">far</text>
+  </g>
+</svg>