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/resolve/lib/caller.js

@@ -0,0 +1,12 @@
+'use strict';
+
+var $Error = require('es-errors');
+
+module.exports = function () {
+    // see https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
+    var origPrepareStackTrace = $Error.prepareStackTrace;
+    $Error.prepareStackTrace = function (_, stack) { return stack; };
+    var stack = (new $Error()).stack;
+    $Error.prepareStackTrace = origPrepareStackTrace;
+    return stack[2].getFileName();
+};