feat: add read-only inventory API

backend/app/main.py

@@ -17,10 +17,12 @@ from app.identity import (
     install_identity_middleware,
     router as identity_router,
 )
+from app.inventory.router import router as inventory_router
 
 
 app = FastAPI(title=settings.app_name)
 app.include_router(identity_router)
+app.include_router(inventory_router)
 install_identity_middleware(app)