Hard to see list of blog posts

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Currently on the new [version of the blog](https://matrix.turbo.fish/blog/) it's hard to see a chronological list of all posts, or those in a particular category. I can show posts in a specific category with a couple of clicks, but (a) this isn't super intuitive, and (b) they don't appear chronological, nor in any particularly sensible order that I can tell.

For example, if I click [This Week in Matrix](https://matrix.turbo.fish/category/this-week-in-matrix), then [(See all Category)](https://matrix.turbo.fish/category), it shows me *all* categories, rather than just the category I clicked. Then, when I go down to the This Week in Matrix section and click that, it takes me to the first page again, showing all blog posts inline rather than a list that I can easily read.

Start by reproducing the navigation from the blog homepage through the This Week in Matrix category and the See all Category link. Check how category results are selected and ordered, then verify that the chosen category shows only its posts in chronological order and provides an easy-to-scan list.

Written by the indexing model from the issue text.