diff --git a/src/commander_ai_lab/deck_builder/core/models.py b/src/commander_ai_lab/deck_builder/core/models.py
new file mode 100644
index 0000000..afea282
--- /dev/null
+++ b/src/commander_ai_lab/deck_builder/core/models.py
@@ -0,0 +1 @@
+# Pydantic models (CardEntry, CommanderDeck) — Phase 2