docs: improve README for developer onboarding

README.md

@@ -1,6 +1,67 @@
 # origin-community
 
-This is a place where organizations and people that use [Origin Cloud](https://docs.origincloud.net)™ can [report bugs](https://github.com/provenant-dev/origin-community/issues/new?assignees=&labels=&projects=&template=bug_report.md&title=) or [security vulnerabilities](https://github.com/provenant-dev/origin-community/security/advisories/new), [request features](https://github.com/provenant-dev/origin-community/issues/new?assignees=&labels=&projects=&template=feature_request.md&title=), and share knowledge and resources via a [wiki](https://github.com/provenant-dev/origin-community/wiki).
+**Origin Cloud** is a zero-trust identity and workflow platform built on
+[KERI](https://keri.one)-based cryptographic identifiers.
+This repository is the public community hub for organizations and
+individuals who *use* Origin Cloud — it is the right place to report
+problems, request improvements, ask questions, and share resources.
+It contains no application source code.
 
-To contribute something here, please raise a pull request. Remember that in doing so, you are contributing public content that has CC-BY-SA 4.0 license.
+---
 
+## How to participate
+
+| What you want to do | Where to go |
+|---|---|
+| Report a bug | [Open a bug report](https://github.com/provenant-dev/origin-community/issues/new?template=bug_report.md) |
+| Report a security vulnerability | [Open a private security advisory](https://github.com/provenant-dev/origin-community/security/advisories/new) |
+| Request a feature | [Open a feature request](https://github.com/provenant-dev/origin-community/issues/new?template=feature_request.md) |
+| Ask a question or share a resource | [Use the wiki](https://github.com/provenant-dev/origin-community/wiki) |
+| Browse or search known issues | [Issues list](https://github.com/provenant-dev/origin-community/issues) |
+
+## Contributing content
+
+Pull requests are welcome for any content in this repository (issue templates,
+guides, and other in-repo files).  By submitting a PR you agree that your
+contribution is licensed under
+[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) — the same
+license that covers everything else in this repo.
+
+Steps:
+
+1. Fork the repository.
+2. Create a branch with a short descriptive name (`fix/bug-template-wording`,
+   `add/getting-started-guide`, etc.).
+3. Make your changes.
+4. Open a pull request against `main` and describe what you changed and why.
+
+There is no build step and no test suite — this repo is documentation and
+GitHub configuration only.
+
+## Repository layout
+
+```
+.github/
+  ISSUE_TEMPLATE/
+    bug_report.md          # Template for bug reports
+    feature_request.md     # Template for feature requests
+LICENSE                    # CC BY 4.0
+README.md                  # This file
+```
+
+A `docs/` directory for richer guides and reference material is planned
+and will appear here as the community grows.
+
+## Going deeper
+
+| Resource | Description |
+|---|---|
+| [Origin Cloud docs](https://docs.origincloud.net) | Official product documentation |
+| [Wiki](https://github.com/provenant-dev/origin-community/wiki) | Community-maintained tips, examples, and Q&A |
+| [Security policy](https://github.com/provenant-dev/origin-community/security/policy) | How to responsibly disclose vulnerabilities |
+
+## License
+
+All content in this repository is licensed under the
+[Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/)
+license.  See [LICENSE](LICENSE) for the full text.