* fix: add SVG check in helper/image before accessing .Width and .Height
* refactor: drop image resizing logic in render-image, and use helper/image to process image
* fix: render-image $permalink not correct
* refactor: migrate page visibility control from `Params.hidden` to the new `build.list` parameter.
* refactor: centralize page filtering logic into a new `helper/pages.html` partial
* feat: introduce `SortBy` parameter to enable sorting pages by last modified date
* refactor: extract page sorting logic into a new `pages-sort.html` partial
