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/mz/dns.js

@@ -0,0 +1,16 @@
+
+require('thenify-all').withCallback(
+  require('dns'),
+  exports, [
+    'lookup',
+    'resolve',
+    'resolve4',
+    'resolve6',
+    'resolveCname',
+    'resolveMx',
+    'resolveNs',
+    'resolveSrv',
+    'resolveTxt',
+    'reverse'
+  ]
+)