diff --git a/CHANGELOG.md b/CHANGELOG.md
index 112c585b4..64099f150 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- d2-diagram skill — text-to-diagram generation with project defaults (theme 200, dagre, PNG)
+- frame0-wireframe skill — UI wireframing via Frame0 HTTP API, replaces MCP dependency with bash+curl
+- 16 decision diagrams — architecture, data-flow, entity, state, and UI categories covering all project decisions
 - Tilemap z-layer filtering — FloorTiles renders z=0 only, z=1/z>1 reserved for future layer nodes (#71, D-049)
 - Entity 24x32 footprint per D-044 visual hierarchy — split ENTITY_SIZE into WIDTH/HEIGHT with separate offsets (#72)
 - Follow target stub on GameState — `follow_target_id` field ready for server #241 Follow verb