Enable automated population of custom variables and metrics in Keeper by allowing integration with external data sources such as Google Sheets, BigQuery, or API access. Right now, entering custom metrics (e.g., billable hours, client-specific KPIs, operational ratios) requires manual input each month. This is both time-consuming and error-prone, especially across multiple clients. For our CFO clients, we already store operational metrics (like session counts, hours worked, staff utilization). We want to sync these directly into Keeper each month without manual rekeying.