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)