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/tailwindcss/lib/util/responsive.js

@@ -0,0 +1,24 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "default", {
+    enumerable: true,
+    get: function() {
+        return responsive;
+    }
+});
+const _postcss = /*#__PURE__*/ _interop_require_default(require("postcss"));
+const _cloneNodes = /*#__PURE__*/ _interop_require_default(require("./cloneNodes"));
+function _interop_require_default(obj) {
+    return obj && obj.__esModule ? obj : {
+        default: obj
+    };
+}
+function responsive(rules) {
+    return _postcss.default.atRule({
+        name: "responsive"
+    }).append((0, _cloneNodes.default)(Array.isArray(rules) ? rules : [
+        rules
+    ]));
+}