fix: technical debts left by the Sites, Authors and SEO slices, plus backend support for the new Sites and Authors pagination

README.md

@@ -48,6 +48,7 @@ task dev                # API with hot reload + Vite HMR → http://localhost:51
 | [docs/docker.md](docs/docker.md) | Running RenewCMS in Docker: image, Compose, data volume, backups, reverse proxy, tags, upgrades, publishing |
 | [docs/configuration.md](docs/configuration.md) | Every environment variable |
 | [docs/architecture.md](docs/architecture.md) | Backend layering and how the SPA is embedded |
+| [docs/performance.md](docs/performance.md) | Measured costs, such as the `?seo=` article filter |
 | [docs/api.md](docs/api.md) | API reference: authentication, API keys, routes and the activity log |
 | [docs/api/articles.md](docs/api/articles.md) | Reading articles: pagination, search, `format` and body schemas |
 | [docs/image-variants.md](docs/image-variants.md) | Image variants and their cache |