xfce: geodesic 2V logo for Start button

Replace the filled gradient triangle with the unified geodesic
logo — outer triangle + inverted inner triangle at midpoints.
SVG + 48px + 64px PNG renders. Cyan on transparent, inherits
panel background.

live/operator-session/icons/clawdie-start.svg

@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64">
-  <!-- Clawdie Start-button icon: upward triangle, brand navy->blue gradient
-       fill with a coral edge. Matches the clawdie.si triangle wordmark and the
-       operator wallpaper palette. Source of truth; PNG renders are derived. -->
-  <defs>
-    <linearGradient id="tri" x1="0" y1="0" x2="0" y2="1">
-      <stop offset="0%" stop-color="#21457a"/>
-      <stop offset="100%" stop-color="#0f3460"/>
-    </linearGradient>
-  </defs>
+  <!-- Clawdie Start-button icon: unified geodesic 2V logo.
+       Outer triangle + inverted inner triangle whose vertices
+       touch the midpoints of the outer sides.
+       Cyan on transparent — inherits panel background. -->
   <path d="M32 7 L57 55 L7 55 Z"
-        fill="url(#tri)"
-        stroke="#e94560"
-        stroke-width="3.5"
+        fill="none"
+        stroke="#00b4d8"
+        stroke-width="3"
+        stroke-linejoin="round"/>
+  <path d="M19.5 31 L44.5 31 L32 55 Z"
+        fill="none"
+        stroke="#00b4d8"
+        stroke-width="3"
         stroke-linejoin="round"/>
 </svg>