docs(design): remove SVG, use PNG logo only

SVG icon is no longer in use. public/logo.png (1024x1024 RGBA) is
the single logo asset. DESIGN.md updated accordingly: SVG snippet
removed, wordmark pattern and <head> references updated to PNG.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

node_modules/@heroicons/react/24/outline/NumberedListIcon.js

@@ -0,0 +1,26 @@
+const React = require("react");
+function NumberedListIcon({
+  title,
+  titleId,
+  ...props
+}, svgRef) {
+  return /*#__PURE__*/React.createElement("svg", Object.assign({
+    xmlns: "http://www.w3.org/2000/svg",
+    fill: "none",
+    viewBox: "0 0 24 24",
+    strokeWidth: 1.5,
+    stroke: "currentColor",
+    "aria-hidden": "true",
+    "data-slot": "icon",
+    ref: svgRef,
+    "aria-labelledby": titleId
+  }, props), title ? /*#__PURE__*/React.createElement("title", {
+    id: titleId
+  }, title) : null, /*#__PURE__*/React.createElement("path", {
+    strokeLinecap: "round",
+    strokeLinejoin: "round",
+    d: "M8.242 5.992h12m-12 6.003H20.24m-12 5.999h12M4.117 7.495v-3.75H2.99m1.125 3.75H2.99m1.125 0H5.24m-1.92 2.577a1.125 1.125 0 1 1 1.591 1.59l-1.83 1.83h2.16M2.99 15.745h1.125a1.125 1.125 0 0 1 0 2.25H3.74m0-.002h.375a1.125 1.125 0 0 1 0 2.25H2.99"
+  }));
+}
+const ForwardRef = /*#__PURE__*/ React.forwardRef(NumberedListIcon);
+module.exports = ForwardRef;