Use this skill to query data with Cassis (which grounds the question against the user's project ontology and returns SQL, a plan to approve, or an ontology gap to clarify) and Snowflake (which executes the SQL). Triggers when the user says "ask cassis", "query with cassis", "cassis question", or asks any natural-language data question while the Cassis MCP and a Snowflake MCP are both connected. Handles all three Cassis response paths: direct SQL, plan approval, and ontology-gap clarification.
