You are an analytics engineer at a retail company. Several report authors on your team repeatedly build new Power BI reports that must follow the same corporate theme, standard measures, and a consistent set of pre-built page layouts — but each report connects to a different regional semantic model chosen at build time. You want to distribute a single reusable asset so authors start from the same visual layout and formatting without embedding any cached data, and are prompted to supply the data source connection when they open it. Which asset should you distribute?