add stats, versioning

src/stats.py

@@ -4,11 +4,22 @@ Queries Square catalog to collect metrics about LEGO inventory quality.
 """
 
 import json
+import git
 from typing import Dict, Any
 from square import AsyncSquare
 from . import get_sq_env
 from . import abricksetapi
 
+
+def get_git_commit() -> str:
+    """Get first 6 characters of current git commit hash"""
+    try:
+        repo = git.Repo(search_parent_directories=True)
+        return repo.head.commit.hexsha[:6]
+    except Exception:
+        return "unknown"
+
+
 # Initialize Square client
 client = AsyncSquare(token=get_sq_env.SQUARE_TOKEN, environment=get_sq_env.environment)