A self-contained Dockerfile analyzer that reads a Dockerfile, parses instructions, and produces an annotated layer report showing which instructions create filesystem layers, metadata changes, or build args. It handles multi-stage builds, COPY --from relationships, and provides cache hints and educational notes for each instruction. The package is well-structured with clear separation of parsing, analysis, and reporting, and includes comprehensive tests. It could be extracted into a standalone library or CLI tool for Docker education and debugging.

A CLI tool that processes Markdown spec files into structured execution prompts for Codex, supporting multiple output modes: clipboard copy, stdout printing, direct Codex launch with arguments, and publishing to unhash.sh for review. It implements section parsing with prioritization, cliping large sections to fit prompt limits, and a review system with feedback retrieval. The code demonstrates a clean command-line tool design with flag parsing, Git integration for repo context, and API interaction, making it a reusable template for spec-to-execution workflows.

A workspace configuration manager that provides list/add/remove operations on multi-key JSON configuration files (RepoPrompt workspace.json) with fuzzy finder integration for interactive removal. It uses custom JSON unmarshal/marshal logic to preserve unknown fields via a raw message map, making it robust against schema drift. The pattern of loading, mutating, and saving structured configuration with user-friendly interactive prompts is reusable for any CLI tool that needs to manage local configuration lists.