docs: note the Applications layout fix in the CHANGELOG

The change itself landed in 8add005, which swept up an unrelated tree while
the layout work was still in progress, so its message says nothing about
Applications. Splitting that commit would mean rewriting a branch already
pushed to origin; the entry here stands in for it instead.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -30,6 +30,15 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
   the longest unbreakable run it holds, and email addresses have nothing to
   break on. Timestamps are exempt and stay on one line.
 
+- panel: the Applications list on a domain page no longer comes apart. It was a
+  four-column table whose last column held six controls, two of them expanding
+  panels with textareas — far more than the width of a column, so the controls
+  broke into a staircase, the login cell grew into a block as tall as the row,
+  and the two text columns were left stranded on the baseline halfway down it.
+  An application is now a block rather than a row: the login on one line, mode
+  and addresses on the next, and the controls in a single wrapping row, with an
+  opened panel claiming the full width for its fields.
+
 ## [0.3.0] - 2026-08-03
 
 ### Fixed