Document compact layout

CHANGELOG.md

@@ -19,6 +19,8 @@ be added after repeatable testing with the fixed evaluation set in
 - Calendar date picker for the most recent cycle-start date.
 - Accessible dark-mode palette for the interface, chatbot, inputs, notices, and
   calendar.
+- Compact laptop layout that keeps the profile, chat controls, suggested
+  prompts, medical notice, and Sources section visible without page scrolling.
 - Evaluation workbook with a fixed test library, scoring rubric, run log, and
   formula-driven dashboard.