Add version number and fix warnings

backend/main.py

@@ -5,14 +5,15 @@ from sqlalchemy import text
 from typing import List
 import models, schemas
 from database import engine, get_db
+from version import __version__, __app_name__, __description__
 
 # Create database tables
 models.Base.metadata.create_all(bind=engine)
 
 app = FastAPI(
-    title="Product Tracker API",
-    description="API for tracking product prices and shopping events",
-    version="1.0.0"
+    title=__app_name__,
+    description=__description__,
+    version=__version__
 )
 
 # CORS middleware for React frontend
@@ -92,7 +93,7 @@ def build_shopping_event_response(event: models.ShoppingEvent, db: Session) -> s
 # Root endpoint
 @app.get("/")
 def read_root():
-    return {"message": "Product Tracker API", "version": "1.0.0"}
+    return {"message": __app_name__, "version": __version__, "name": "Groceries Tracker Backend"}
 
 # Product endpoints
 @app.post("/products/", response_model=schemas.Product)