Update README with project description, docs links, and centered logo

README.md

@@ -1,24 +1,102 @@
-# RegShape Overview
+# RegShape
 
 ![GitHub issues](https://img.shields.io/github/issues-raw/toddysm/regshape?link=https%3A%2F%2Fgithub.com%2Ftoddysm%2Fregshape%2Fissues)
  ![GitHub pull requests](https://img.shields.io/github/issues-pr-raw/toddysm/regshape?link=https%3A%2F%2Fgithub.com%2Ftoddysm%2Fregshape%2Fpulls)
 
-![RegShape](./docs/media/regshape-logo.png)
+<p align="center">
+  <img src="./docs/media/regshape-logo.png" alt="RegShape" width="256">
+</p>
 
-RegShape (from REGistry reSHAPE) is a CLI tool and a Python library for manipulating 
-artifacts in an [OCI](https://opencoutnaiers.org) registry. While there are many other tools that can do this
-(see [ORAS](https://oras.land), [regclient](https://github.com/regclient/regclient)
-or Google's [crane](https://github.com/google/go-containerregistry/tree/main/cmd/crane)), 
-the goal of RegShape is to provide a flexibility to manipulate the requests with 
+RegShape (from **REG**istry re**SHAPE**) is a CLI tool and a Python library for
+manipulating artifacts in an [OCI](https://opencontainers.org) registry. While
+there are many other tools that can do this (see
+[ORAS](https://oras.land),
+[regclient](https://github.com/regclient/regclient), or Google's
+[crane](https://github.com/google/go-containerregistry/tree/main/cmd/crane)),
+the goal of RegShape is to provide flexibility to manipulate the requests with
 an intention to break the consistency of the artifacts.
 
-You should be able to use RegShape similarly to the tools above, but you can also
-use it in expert mode where you can manually craft the requests to the registry
-and try to break it. This is useful for testing the registry implementations or
-the security of the registry.
+You can use RegShape in two modes:
 
-RegShape is written in Python and offers Python libraries that can be leveraged 
-to build your own tools. The CLI tool is built on top of the libraries and uses
-[click](https://click.palletsprojects.com/) framework.
+- **Standard mode** — interact with registries as you would with any other tool:
+  pull and push manifests, blobs, tags, and more.
+- **Expert / break mode** — manually craft requests to test registry
+  implementations and probe their security boundaries.
 
-**Note:** The tool is still in early development and the API is not stable yet.
+RegShape is written in Python and offers Python libraries that can be leveraged
+to build your own tools. The CLI is built on top of the libraries and uses the
+[Click](https://click.palletsprojects.com/) framework.
+
+> **Note:** The tool is still in early development and the API is not stable yet.
+
+## Installation
+
+```bash
+git clone https://github.com/toddysm/regshape.git
+cd regshape
+pip install -e .
+```
+
+## Quick Start
+
+Ping a registry to verify connectivity:
+
+```bash
+regshape ping registry-1.docker.io
+```
+
+Retrieve a manifest:
+
+```bash
+regshape manifest get -i docker.io/library/alpine:latest
+```
+
+List tags for a repository:
+
+```bash
+regshape tag list -i docker.io/library/alpine
+```
+
+## Documentation
+
+### Guides
+
+- [Creating OCI Layouts](docs/guides/create-oci-layout.md)
+- [Docker Desktop Integration](docs/guides/docker-desktop-integration.md)
+
+### Architecture & Design
+
+- [Architecture Overview](specs/architecture.md)
+
+### CLI Command Specs
+
+| Command | Spec |
+|---------|------|
+| Auth | [specs/cli/auth.md](specs/cli/auth.md) |
+| Blob | [specs/cli/blob.md](specs/cli/blob.md) |
+| Catalog | [specs/cli/catalog.md](specs/cli/catalog.md) |
+| Manifest | [specs/cli/manifest.md](specs/cli/manifest.md) |
+| Tag | [specs/cli/tag.md](specs/cli/tag.md) |
+| Referrer | [specs/cli/referrer.md](specs/cli/referrer.md) |
+| Ping | [specs/cli/ping.md](specs/cli/ping.md) |
+| Layout | [specs/cli/layout.md](specs/cli/layout.md) |
+| Layout Push | [specs/cli/layout-push.md](specs/cli/layout-push.md) |
+| Formatting | [specs/cli/formatting.md](specs/cli/formatting.md) |
+
+### Library Specs
+
+- [Models](specs/models/) — Blob, Catalog, Error, Manifest, Referrer, Tags
+- [Operations](specs/operations/) — Blobs, Catalog, Manifests, Referrers, Tags
+
+## Contributing
+
+See [CONTRIBUTING.md](CONTRIBUTING.md) for instructions on setting up your
+development environment.
+
+## Security
+
+To report a vulnerability, please see [SECURITY.md](SECURITY.md).
+
+## License
+
+This project is licensed under the Apache License 2.0 — see the [LICENSE](LICENSE) file for details.