add ui design ./ui/designs/ecomm-login-and-create-storefront-designs/

Claude Design export for SD-0001 (login + create-storefront surfaces): wf-*/hf-*
screens, design-system bundle, offline preview. First artifact in the ui/designs/
collection (ecomm#8). Also ignore .DS_Store.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ui/designs/ecomm-login-and-create-storefront-designs/project/assets/wiggleverse-mark.svg

@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120" viewBox="0 0 120 120" fill="none" role="img" aria-label="Wiggleverse">
+  <title>Wiggleverse — Circle of Equals</title>
+  <defs>
+    <linearGradient id="wv-grad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0" stop-color="#9B8CFF"></stop>
+      <stop offset="1" stop-color="#F4C76B"></stop>
+    </linearGradient>
+  </defs>
+  
+  <path d="M98 60 Q105 86 79 93 Q60 82 41 93 Q15 86 22 60 Q41 49 41 27 Q60 8 79 27 Q79 49 98 60 Z" stroke="url(#wv-grad)" stroke-width="2.4" fill="none" stroke-linejoin="round"></path>
+  <g fill="#EDEAFF">
+    <circle cx="98" cy="60" r="4.5"></circle>
+    <circle cx="79" cy="93" r="4.5"></circle>
+    <circle cx="41" cy="93" r="4.5"></circle>
+    <circle cx="22" cy="60" r="4.5"></circle>
+    <circle cx="41" cy="27" r="4.5"></circle>
+    <circle cx="79" cy="27" r="4.5"></circle>
+  </g>
+</svg>