* feat: use images.AutoOrient in `helper/image`
closes https://github.com/CaiJimmy/hugo-theme-stack/issues/1292
* fix: check if IsImageResourceProcessable before using filter
* remove local field
* feat: add configurable image auto-orientation via a new `autoOrient` parameter in site configuration
* 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
