#20 Add Snowflake connector/runtime

[Anonymous]

Originally created by: intraq-dev-ai

Connector gap

WrenAI supports Snowflake. IntraQ lists Snowflake in some UI/source-type paths, but the live SQL runner does not execute Snowflake queries.

Evidence

WrenAI docs list Snowflake as a supported data source. IntraQ has Snowflake dialect helpers, but live execution types/runners only cover PostgreSQL, MySQL/MariaDB, SQL Server, Databricks, and ClickHouse.

Acceptance criteria

• Add a real Snowflake connector/runtime.
• Support account/warehouse/database/schema/role credentials securely.
• Support schema discovery, query preview, SQL Editor execution, Analyzer, and Dashboard Builder.
• Add tests for limits, parameter handling, connection validation, and warehouse/schema selection.