rgql: AST-Aware GraphQL Refactoring That AI Agents Can Trust

`rgql` is a CLI tool that renames GraphQL types, fields, and fragments across schema files and embedded TypeScript queries using full AST analysis. Because it's type-safe and deterministic, it's ideal for AI coding agents like Claude Code and Codex — they can invoke a single command instead of performing fragile find-and-replace across dozens of files.