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/fast-glob/out/readers/stream.d.ts

@@ -0,0 +1,14 @@
+/// <reference types="node" />
+import { Readable } from 'stream';
+import * as fsStat from '@nodelib/fs.stat';
+import * as fsWalk from '@nodelib/fs.walk';
+import { Pattern, ReaderOptions } from '../types';
+import Reader from './reader';
+export default class ReaderStream extends Reader<Readable> {
+    protected _walkStream: typeof fsWalk.walkStream;
+    protected _stat: typeof fsStat.stat;
+    dynamic(root: string, options: ReaderOptions): Readable;
+    static(patterns: Pattern[], options: ReaderOptions): Readable;
+    private _getEntry;
+    private _getStat;
+}