sharepoint-data-must-flow-through-snowflake-not-vantage-ingestion

SharePoint CSVs and Excel files for R-Dash/Vantage must be materialized into Snowflake by upstream pipelines (Fivetran/n8n/custom shim) before Vantage queries them. Vantage is a pure consumption platform with zero ingestion logic — building a file-to-table shim inside the BI app violates AR-4 and adds unnecessary complexity. This collapses the connector surface to Snowflake-only and eliminates the Microsoft Graph API polling pattern from the application layer entirely.