[codex] redesign landing and app experience

[mnvvr]

Summary

• redesign the landing experience around the orange/black "folder" visual system and updated information architecture
• restyle the in-app queue, match, and results surfaces to align the live game with the landing brand direction
• refresh shared shell assets including the favicon and add a logo exploration page used during the design pass

Files

• public/index.html
• public/app.html
• public/favicon.svg
• public/logo-alternatives.html
• package.json

Validation

• reviewed locally in browser preview during the design iteration
• compared the content and flow against the live product/repo references provided during the session

[github-actions]

Preview Guide

This repo deploys a PR-scoped Cloudflare preview for same-repository pull requests.

• PR preview: https://schelling-games-pr-303.0xferit.workers.dev
• Next step: open the preview URL above. This preview is dedicated to this PR and updates in place on new pushes.
• Build source: the GitHub pull request merge ref, so the preview reflects the merged result rather than just the branch head.
• Isolation: each PR gets its own Worker and D1 database, and the preview is deleted automatically when the PR closes.
• Local preview:

  npm ci
  npx wrangler d1 migrations apply DB --local
  npm run dev

• Smoke validation: if preview deployment succeeds, the same CI run also executes npm run smoke:staging against the PR URL.