diff --git a/CLAUDE.md b/CLAUDE.md
index aed0a27..f9a9aa0 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -285,3 +285,12 @@ Attempted fixes:
 - Called `await refetchFilaments()` before setting form value
 
 Still not working reliably. May need to investigate react-query cache invalidation timing or add the new option manually to the select options array.
+
+### 3dfilamentprofiles Sample Data
+The 3dfp GitHub repo only contains sample data (3 filaments). The full dataset may require:
+- Using their website API directly (may need auth)
+- Waiting for them to publish full JSON exports
+- Current implementation uses `sample-filaments.json` from the repo
+
+### Next Up: Issue #9 - Hierarchical Locations
+Add room/bin/shelf support for locations. See Gitea issue #9 for details.