I don’t know why there is no search box, but I have discovered that I can use the “s” query string parameter to search this blog hosted by WordPress, which is handy because I haven’t figured out how to add a list of all the posts. For example, to search for paging:
Update: I found the search box. You have to set s to something that does not appear on the blog. <a href="https://deliverystack.net?s=https://deliverystack.net?s=<replace this with something unique or unparseable>
Update 16.May.2021: In the browser address bar, you can type deliverystack.net [space], then a search term, and then press Enter.