//! NoETL Tool Library
//!
//! Shared tool implementations for workflow execution.
//!
//! This crate provides:
//! - Tool execution framework with registry pattern
//! - Built-in tools: shell, rhai, http, duckdb/ducklake, postgres, python, playbook, noop
//! - Template engine with Jinja2-compatible syntax
//! - Authentication resolvers (GCP ADC, credentials)
//! - Apache Arrow IPC codec for the columnar data plane (R-2.1, see
//! Appendix H of the global hybrid cloud blueprint)
pub use ExecutionContext;
pub use ToolError;
pub use ;
pub use ;