docs: add CHANGELOG, GOVERNANCE, SUPPORT, CODEOWNERS

.github/CODEOWNERS

@@ -0,0 +1,7 @@
+# Code owners for the Code Architects Enterprise Solution Platform.
+#
+# These owners are automatically requested for review on pull requests and are
+# the maintainers referenced in GOVERNANCE.md. Replace the entry below with a
+# GitHub team (e.g. @codearchitects/esp-maintainers) once one is created.
+
+* @gmasci-ca

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+All packages in the repository share a single version.
+
+## [10.0.0]
+
+### Added
+
+- Initial public open-source release of the Code Architects Enterprise Solution
+  Platform under the Apache License 2.0.
+- `CodeArchitects.Platform.*` libraries — messaging, actors, state management,
+  data access (ADO.NET, Entity Framework Core, MongoDB), application services,
+  policy management and GraphQL — published to NuGet.org from a single .NET
+  solution, with first-class [Dapr](https://dapr.io/) support.
+- Project legal and governance documentation: `LICENSE`, `NOTICE`,
+  `CONTRIBUTING.md`, `CODE_OF_CONDUCT.md`, `SECURITY.md`, `GOVERNANCE.md`,
+  `SUPPORT.md`, issue/PR templates, and `.github/CODEOWNERS`.
+- Continuous integration (build + test), a NuGet publish workflow with
+  semantic/pre-release versioning, an SBOM step, and Dependabot configuration.
+
+[10.0.0]: https://github.com/codearchitects/CodeArchitects.EnterprisePlatform.Server/releases/tag/v10.0.0

GOVERNANCE.md

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+# Project Governance
+
+This document describes how the Code Architects Enterprise Solution Platform
+project is governed and how decisions are made.
+
+## Overview
+
+The project is maintained by **Code Architects S.r.l.** and is open to
+contributions from the community under the [Apache License 2.0](LICENSE).
+
+## Roles
+
+### Users
+
+Anyone who uses the libraries. Users are encouraged to participate by reporting
+issues, requesting features, and joining discussions.
+
+### Contributors
+
+Anyone who submits a contribution (code, documentation, tests, reviews, triage)
+to the project. Contributions are accepted via pull request and must follow
+[CONTRIBUTING.md](CONTRIBUTING.md).
+
+### Maintainers
+
+Maintainers are responsible for the overall health and direction of the project.
+They review and merge pull requests, triage issues, manage releases, and uphold
+the [Code of Conduct](CODE_OF_CONDUCT.md). Maintainers are appointed by Code
+Architects S.r.l. and are listed in [.github/CODEOWNERS](.github/CODEOWNERS).
+
+## Decision making
+
+Day-to-day decisions are made by maintainers through the normal review process:
+
+- **Pull requests** require approval from at least one maintainer who is not the
+  author before merging.
+- **Non-trivial or breaking changes** should first be discussed in an issue to
+  reach rough consensus.
+- Where consensus cannot be reached, Code Architects S.r.l., as the project
+  steward, makes the final decision.
+
+## Releases
+
+All packages share a single version and are released together. Releases are cut
+by maintainers via the automated publish workflow — either by running it manually
+from the Actions tab or by publishing a GitHub Release. See
+[README.md](README.md#versioning--releases) for details.
+
+## Changes to governance
+
+This document may be amended by the maintainers. Material changes will be made
+via pull request so the community can review them.

README.md

@@ -59,10 +59,31 @@ pip install mkdocs
 mkdocs serve
 ```
 
+## Versioning & releases
+
+All packages share a **single version**, defined once in
+[`Directory.Build.props`](Directory.Build.props). Versioning follows
+[Semantic Versioning](https://semver.org/), with the major version aligned to the
+.NET release wave (the first public release is `10.0.0`). Internal project
+references are pinned to the same shared version at pack time.
+
+Releases are cut by maintainers through the
+[publish workflow](.github/workflows/publish.yml), in one of two ways:
+
+- **Manually** from the *Actions* tab — pick a bump type (`patch`/`minor`/`major`,
+  or a `prepatch`/`preminor`/`premajor`/`prerelease` with a `beta`/`rc`/`alpha`/
+  `canary`/`next` identifier). A `dry_run` option is available.
+- **By publishing a GitHub Release** with a tag such as `v10.1.0` or `v10.1.0-rc.1`.
+
+Pre-release versions carry a suffix (e.g. `10.1.0-beta.0`); consumers opt in to
+them with `--prerelease`. See the [CHANGELOG](CHANGELOG.md) for release notes.
+
 ## Contributing
 
 Contributions are welcome! Please read [CONTRIBUTING.md](CONTRIBUTING.md) and our
 [Code of Conduct](CODE_OF_CONDUCT.md) before opening an issue or pull request.
+See [GOVERNANCE.md](GOVERNANCE.md) for how the project is run and
+[SUPPORT.md](SUPPORT.md) for how to get help.
 
 ## Security
 

SUPPORT.md

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+# Support
+
+Thanks for using the Code Architects Enterprise Solution Platform! Here is how
+to get help.
+
+## Questions and usage help
+
+- **Read the docs first** — start with the [README](README.md), the guides under
+  [`docs/`](docs/), and each package's own README.
+- **Search existing issues** — your question may already be answered.
+- **Open a discussion or issue** — if you can't find an answer, open a GitHub
+  issue and describe what you're trying to do.
+
+## Reporting bugs and requesting features
+
+Use the GitHub issue templates:
+
+- **Bug report** — for something that isn't working as documented.
+- **Feature request** — for a new capability or improvement.
+
+Please provide a minimal reproduction, versions (.NET SDK, target framework, and
+the affected `CodeArchitects.Platform.*` package version) and expected vs. actual
+behavior.
+
+## Security issues
+
+Do **not** open a public issue for security problems. Follow the private
+reporting process in [SECURITY.md](SECURITY.md).
+
+## Commercial support
+
+For commercial support and enterprise inquiries, contact
+[Code Architects S.r.l.](https://www.codearchitects.com/).