Skipping API responses, where we need absolute URLs, and those that are
intended for sharing or external use:
- account/join_codes/show.html.erb - Join code URL for sharing
- boards/edit/_publication.html.erb - Publication URL for sharing
- public/* views - Public page URLs and og:url meta tags
- pwa/manifest.json.erb - PWA manifest needs absolute URLs
For this, we had to replace `url_for` used with Active Storage variants
and previews with the specific path helper (for Active Storage
representations).