diff --git a/.agent/skills/pencil-design/SKILL.md b/.agent/skills/pencil-design/SKILL.md
index 2cd5b3d2..d63fb0eb 100644
--- a/.agent/skills/pencil-design/SKILL.md
+++ b/.agent/skills/pencil-design/SKILL.md
@@ -361,6 +361,7 @@ python3 scripts/build.py --library
 - [Build System Reference](./references/BUILD_SYSTEM.md) - Build configuration, workflows, troubleshooting
 - [Atomic Design Reference](./references/ATOMIC_DESIGN.md) - Enterprise UI Kit organization, extraction scripts
 - [Code Conversion Reference](./references/CODE_CONVERSION.md) - Design to HTML/CSS/React/Blazor conversion
+- [Pitfalls Reference](./references/PITFALLS.md) - Common mistakes and solutions
 
 ### Related Skills