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>

docker-compose.yml

@@ -0,0 +1,16 @@
+services:
+  netork-website:
+    build: .
+    image: netork-website:latest
+    container_name: netork-website
+    restart: unless-stopped
+    expose:
+      - "80"
+    networks:
+      - proxy-net
+
+# Zoraxy proxies to netork-website:80 via proxy-net.
+# No host port binding needed — SSL terminated by Zoraxy.
+networks:
+  proxy-net:
+    external: true