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/providers/transformers/entry.d.ts

@@ -0,0 +1,8 @@
+import Settings from '../../settings';
+import { EntryTransformerFunction } from '../../types';
+export default class EntryTransformer {
+    private readonly _settings;
+    constructor(_settings: Settings);
+    getTransformer(): EntryTransformerFunction;
+    private _transform;
+}