Regenerates the README hero banner and the (web-UI-only) demo GIF. Run from repo root.

1. scripts/demo/render-banner.sh # docs/social.html (+ docs/logo.svg) -> docs/social.png
2. Boot a demo mcpproxy and capture the web UI:

   cd scripts/demo
   ln -sfn ../../e2e/playwright/node_modules ./node_modules
   MCPPROXY_BASE_URL=http://127.0.0.1:18082 MCPPROXY_API_KEY=<key> \
     ./node_modules/.bin/playwright test --config=playwright.config.ts
   

   produces /tmp/demo-webui//video.webm for the 4 beats

3. scripts/demo/build-demo.sh # stitches the 4 web beats -> docs/demo.gif + docs/demo.webp

The macOS tray menu and native app are shown as static screenshots in the README (docs/screenshot-macos-tray.png, docs/screenshot-macos-activity.png), not in the GIF.

All outputs are committed under docs/. social.png is also uploaded manually to GitHub Settings -> Social preview (one-time, cannot be scripted).