An automated SQL performance analyzer, schema linter, and query execution optimizer built for GitHub Actions. Parses raw SQL code or schema files, identifies structural anti-patterns, connects to ephemeral database containers (PostgreSQL / MySQL / MariaDB / SQL Server) or an in-memory SQLite engine, and evaluates query execution plans (EXPLAIN / SHOWPLAN) to flag sequential scans, disk sorts, and full table scans. BigQuery and Snowflake are supported for static dialect linting only.