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awesome-copilot/plugins/arch/README.md
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# Arch Plugin
Architecture and modernization toolkit for locally-cloned repositories. It produces a single, cited architecture document from the code on disk, and generates a phased modernization plan that automatically runs Documentation mode first when no architecture document exists yet.
## Installation
```bash
copilot plugin install arch@awesome-copilot
```
## What's Included
### Skills
- **`doc-and-modernize`** — Two complementary workflows for a locally-cloned repository, in one skill (installed via this plugin it surfaces as `arch:doc-and-modernize`):
- **Documentation mode** — Produce one comprehensive, verifiable architecture document for a repository you already have checked out locally. Works local-first (prefers the local checkout, treating remote/API lookups as a flagged last resort), cites every claim to a file + line, flags unverified facts, resolves contradictions, and deep-dives the most complex subsystems. Ideal for onboarding docs and system-design maps.
- **Modernization mode** — Generate a phased modernization plan for a legacy codebase. If a current architecture document exists it builds on it; otherwise it first runs the Documentation mode workflow to produce one, then continues to the plan. Produces per-feature migration docs, tech-stack recommendations with ADRs, and an adaptive, safety-laddered phased implementation plan.
## Source
This plugin is part of [Awesome Copilot](https://github.com/github/awesome-copilot).
## License
MIT