Update 31.4 changelog

Co-authored-by: Copilot <copilot@github.com>

Author: isontheline

documentation/src/docs/documentation/changelog/31.md

@@ -7,7 +7,19 @@ title: 31 - Ocean
 
     [Wikipedia](https://en.wikipedia.org/wiki/Ocean)
 
-## 31.4 - Ocean (Littoral) - [Soon](https://webssh.net/documentation/becoming-external-tester/)
+## 31.5 - Ocean (Abyssal) - [Soon](https://webssh.net/documentation/becoming-external-tester/)
+
+## 31.4 - Ocean (Littoral)
+** April 23, 2026**
+
+| Title | Type of change | Issue |
+| --- | --- | --- |
+| SSH Session Logging | Added | [#1489](https://github.com/isontheline/pro.webssh.net/issues/1489) |
+| Light / dark terminal theme | Added | [#1545](https://github.com/isontheline/pro.webssh.net/issues/1545) |
+| Ability to choose rendering engine : WebGL / Canvas | Added | [#1580](https://github.com/isontheline/pro.webssh.net/issues/1580) |
+| Apple Terminal colour schemes | Added | [#1560](https://github.com/isontheline/pro.webssh.net/issues/1560) |
+| Cursor is not blinking anymore | Fixed | [#1577](https://github.com/isontheline/pro.webssh.net/issues/1577) |
+| App becomes unresponsive after using the text editor 10-15 times | Fixed | [#1591](https://github.com/isontheline/pro.webssh.net/issues/1591) |
 
 ## 31.3 - Ocean (Neritic)
 ** March 31, 2026 **