feat(phase-8): add api __init__ exports

src/commander_ai_lab/deck_builder/api/__init__.py

@@ -1 +1,11 @@
-# api subpackage
+"""API subpackage – external service clients (Scryfall, EDHRec, Ollama)."""
+
+from .scryfall import ScryfallClient
+from .edhrec import EDHRecClient
+from .ollama_client import OllamaClient
+
+__all__ = [
+    "ScryfallClient",
+    "EDHRecClient",
+    "OllamaClient",
+]