docs: note portfolio overview

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [Frontend 0.13.0 / Backend 0.12.0 / Shared 0.7.0] - 2026-08-27
+
+### Added
+
+- Added a separate portfolio view with the latest broker and IIS positions and total valuation.
+
 ## [Frontend 0.12.0 / Backend 0.11.0 / Shared 0.6.0] - 2026-08-26
 
 ### Added