feat: releases and changelog links in the status pane; the version opens its release

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/keys.md

@@ -116,7 +116,8 @@ On top, the status pane (`0`) shows the version, a newer release and how
 your accounts are doing. Focused, the right pane lists more: the version
 and updates (`U`), each account (`L` on one that needs it signs in), the
 config, state and cache files (`e` opens one in your editor), and links
-to the docs, source and issues (`o` opens one), then the changelog of
+to the docs, source, issues, releases and changelog (`o` opens one; on
+the version or update, its release), then the changelog of
 every release up to yours, built in so it needs no network: `/` filters
 it (`/fixed`, `/search`). `y` copies any row.