On the Unread tab, a swipe back goes to the item just read (#50)

selectEntry took each read item out of the list the moment you moved on
from it, so the item was not there for the back swipe (or k) to reach: it
went to the one before, or to the list if the item had been first.

Items read while turning from one to the next (a swipe, j and k) now stay
in the list until the reader closes or another item is picked from the
list, and a background refresh keeps them as it keeps the open one.
Picking a row still drops the item left behind at once, as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- On the Unread tab, a swipe back (or k) goes to the item you just read, instead of past it or
+  back to the list. The items read on the way leave the Unread tab once you close the reader.
+
 ## [0.9.0] - 2026-09-28
 
 ### Added