diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
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index 000000000..ce144bf1f
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,8 @@
+# Code of Conduct
+
+This project follows the ownCloud Code of Conduct.
+
+Please read the full Code of Conduct at:
+****
+
+By participating in this project, you agree to abide by its terms.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
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--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,9 @@
+# Contributing
+
+Thank you for your interest in contributing to this project!
+
+Please read the full contributing guidelines at:
+****
+
+For development setup, coding standards, and pull request process,
+see the README in this repository.
diff --git a/README.md b/README.md
index 004444758..38f593264 100644
--- a/README.md
+++ b/README.md
@@ -1,63 +1,115 @@
# ownCloud Contacts
-[](https://webchat.freenode.net/?channels=owncloud-contacts)
-[](https://scrutinizer-ci.com/g/owncloud/contacts/build-status/master)
-[](https://sonarcloud.io/dashboard?id=owncloud_contacts)
-[](https://sonarcloud.io/dashboard?id=owncloud_contacts)
-[](https://sonarcloud.io/dashboard?id=owncloud_contacts)
+
-**A contacts app for [ownCloud](https://owncloud.org)**
+[](LICENSE) [](https://kiteworks.com/opensource) [](https://hub.docker.com/r/owncloud/server)
-This is the new contacts app that has replaced the [old contacts app](https://github.com/owncloudarchive/contacts), and is only the frontend for the new server-integrated CardDAV-Backend.
+The ownCloud Contacts app provides a feature-rich web interface for managing CardDAV contacts in ownCloud Server. It is the frontend for the server-integrated CardDAV backend, replacing the original contacts app. Users can create, edit, and organize contacts, manage address books, and share contacts with other users.
-
+## Part of Classic (OC10)
-## Maintainers:
+Contacts is an app for [ownCloud Server (Classic)](https://github.com/owncloud/core). It uses the CardDAV backend built into ownCloud Server core. The app is available on [Docker Hub as part of the ownCloud Server image](https://hub.docker.com/r/owncloud/server).
-- [Thomas Müller](https://github.com/DeepDiver1975)
-- [Hendrik Leppelsack](https://github.com/Henni)
-- [Jan-Christoph Borchardt](https://github.com/jancborchardt)
-- [Tom Needham](https://github.com/tomneedham)
+## Getting Started
+Follow the steps below to build and install the Contacts app.
-If you’d like to join, just go through the [issue list](https://github.com/owncloud/contacts/issues) and fix some. :)
+### Building
+The app can be built using the provided Makefile:
-## Building the app
+```bash
+make
+```
-The app can be built by using the provided Makefile by running:
+This requires: make, which, tar, curl, npm.
- make
+### Installation
-This requires the following things to be present:
-* make
-* which
-* tar: for building the archive
-* curl: used if phpunit and composer are not installed to fetch them from the web
-* npm: for building and testing everything JS
+Extract the build artifact in the `apps/` folder of your ownCloud Server installation, then enable the app.
+### Running Tests
-## Publish to App Store
+```bash
+make test
+```
-First get an account for the [App Store](http://apps.owncloud.com/) then run:
+This runs both PHP unit tests and JavaScript tests.
- make && make appstore
+## Documentation
-The archive is located in build/artifacts/appstore and can then be uploaded to the App Store.
+- [ownCloud Server documentation](https://doc.owncloud.com)
+- For CardDAV backend issues, see [ownCloud Core](https://github.com/owncloud/core)
-## Running tests
-You can use the provided Makefile to run all tests by using:
+## Community & Support
- make test
+**[Star](https://github.com/owncloud/contacts)** this repo and **Watch** for release notifications!
-This will run the PHP unit and integration tests and if a package.json is present in the **js/** folder will execute **npm run test**
+- [ownCloud Website](https://owncloud.com)
+- [Community Discussions](https://github.com/orgs/owncloud/discussions)
+- [Matrix Chat](https://app.element.io/#/room/#owncloud:matrix.org)
+- [Documentation](https://doc.owncloud.com)
+- [Enterprise Support](https://owncloud.com/contact-us/)
+- [OSPO Home](https://kiteworks.com/opensource)
-Of course you can also install [PHPUnit](http://phpunit.de/getting-started.html) and use the configurations directly:
+## Contributing
- phpunit -c phpunit.xml
+We welcome contributions! Please read the [Contributing Guidelines](CONTRIBUTING.md)
+and our [Code of Conduct](CODE_OF_CONDUCT.md) before getting started.
-or:
+### Workflow
- phpunit -c phpunit.integration.xml
+- **Rebase Early, Rebase Often!** We use a rebase workflow. Always rebase on the target branch before submitting a PR.
+- **Dependabot**: Automated dependency updates are managed via Dependabot. Review and merge dependency PRs promptly.
+- **Signed Commits**: All commits **must** be PGP/GPG signed. See [GitHub's signing guide](https://docs.github.com/en/authentication/managing-commit-signature-verification).
+- **DCO Sign-off**: Every commit must carry a `Signed-off-by` line:
+ ```
+ git commit -s -S -m "your commit message"
+ ```
+- **GitHub Actions Policy**: Workflows may only use actions that are (a) owned by `owncloud`, (b) created by GitHub (`actions/*`), or (c) verified in the GitHub Marketplace.
-for integration tests
+## Translations
+
+Help translate this project on Transifex:
+****
+
+Please submit translations via Transifex -- do not open pull requests for translation changes.
+
+## Security
+
+**Do not open a public GitHub issue for security vulnerabilities.**
+
+Report vulnerabilities at **** -- see [SECURITY.md](SECURITY.md).
+
+Bug bounty: [YesWeHack ownCloud Program](https://yeswehack.com/programs/owncloud-bug-bounty-program)
+
+## License
+
+See [LICENSE](LICENSE) for license details.
+
+## About the ownCloud OSPO
+
+The [Kiteworks Open Source Program Office](https://kiteworks.com/opensource), operating under
+the [ownCloud](https://owncloud.com) brand, launched on May 5, 2026, to steward the open source
+ecosystem around ownCloud's products. The OSPO ensures transparent governance, license compliance,
+community health, and sustainable collaboration between the open source community and
+[Kiteworks](https://www.kiteworks.com), which acquired ownCloud in 2023.
+
+- **OSPO Home**:
+- **GitHub**:
+- **ownCloud**:
+
+For questions about the OSPO or licensing, contact ospo@kiteworks.com.
+
+### License Migration to Apache 2.0
+
+The OSPO is driving a strategic relicensing of ownCloud repositories toward the
+[Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0), following
+the [Apache Software Foundation's third-party license policy](https://www.apache.org/legal/resolved.html).
+
+Individual repositories will migrate as their audit is completed. The LICENSE file
+in each repo reflects its **current** license status (not the target).
+
+**Current license: Not detected.** The OSPO will determine the current license status of this
+repository before planning any migration steps. If you know the intended license, please open an
+issue or contact ospo@kiteworks.com.
diff --git a/SECURITY.md b/SECURITY.md
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+++ b/SECURITY.md
@@ -0,0 +1,11 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+**Do NOT open a public GitHub issue for security vulnerabilities.**
+
+Please report security issues responsibly via:
+****
+
+You can also report vulnerabilities through our YesWeHack bug bounty program:
+****
diff --git a/SUPPORT.md b/SUPPORT.md
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+++ b/SUPPORT.md
@@ -0,0 +1,10 @@
+# Support
+
+For support with this project, please use the following channels:
+
+- **Enterprise Support**:
+- **Community discussions**: https://github.com/orgs/owncloud/discussions
+- **Matrix Chat**:
+- **Documentation**:
+
+Please do not use GitHub issues for general support questions.
diff --git a/agents.md b/agents.md
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+++ b/agents.md
@@ -0,0 +1,95 @@
+# AI Agent Guidelines for Contacts
+
+This file provides context for AI coding agents (Claude Code, GitHub Copilot, Cursor, etc.) working in this repository.
+
+## Repository Overview
+- **Product family:** Classic (OC10)
+- **Primary language(s):** JavaScript, PHP
+- **Build system:** Composer, Make, npm, Bower, Gulp
+- **Test framework:** PHPUnit, Karma (JavaScript)
+- **CI system:** GitHub Actions
+
+## Architecture & Key Paths
+- `controller/` - PHP controllers
+- `lib/` - PHP library code
+- `js/` - Frontend JavaScript
+- `css/` - Stylesheets
+- `templates/` - Server-side templates
+- `l10n/` - Translations
+- `appinfo/` - ownCloud app metadata
+- `img/` - App icons
+- `tests/` - PHP and JS test suites
+- `Makefile` - Build and test automation
+- `composer.json` - PHP dependencies
+- `package.json` - JavaScript dependencies
+- `bower.json` - Bower dependencies
+- `gulpfile.js` - Gulp task runner configuration
+- `karma.conf.js` - Karma test runner configuration
+- `phpunit.xml` - PHPUnit configuration
+- `phpunit.integration.xml` - PHPUnit integration test configuration
+- `phpstan.neon` - PHPStan configuration
+
+## Development Conventions
+- **Branching:** master
+- **Commit messages:** DCO sign-off required (`git commit -s`)
+- **Code style:** PHP_CodeSniffer, ownCloud coding standard
+- **PR process:** Open a PR against master. All CI checks must pass.
+
+## Build & Test Commands
+```bash
+# Build
+make
+
+# Test (all)
+make test
+
+# Test (PHP unit)
+make test-php-unit
+
+# Test (PHP integration)
+make test-php-integration
+
+# Test (JavaScript)
+make test-js
+
+# Lint (PHP)
+make test-php-style
+
+# Fix code style
+make test-php-style-fix
+
+# Publish to App Store
+make && make appstore
+```
+
+## Important Constraints
+- All code contributions must be compatible with the project's license
+- Do not introduce new **copyleft-licensed dependencies** (GPL, AGPL, LGPL, MPL) without explicit discussion in an issue first. This is especially important for repos migrating to Apache 2.0.
+- Do not introduce new dependencies without discussion in an issue first
+- This app is the frontend only; the CardDAV backend is in ownCloud Core
+
+
+## OSPO Policy Constraints
+
+### GitHub Actions
+- **Only** use actions owned by `owncloud`, created by GitHub (`actions/*`), verified on the GitHub Marketplace, or verified by the ownCloud Maintainers.
+- Pin all actions to their full commit SHA (not tags): `uses: actions/checkout@ # vX.Y.Z`
+- Never introduce actions from unverified third parties.
+
+### Dependency Management
+- Dependabot is configured for automated dependency updates.
+- Review and merge Dependabot PRs as part of regular maintenance.
+- Do not introduce new dependencies without discussion in an issue first.
+
+### Git Workflow
+- **Rebase policy**: Always rebase; never create merge commits. Use `git pull --rebase` and `git rebase` before pushing.
+- **Signed commits**: All commits **must** be PGP/GPG signed (`git commit -S -s`).
+- **DCO sign-off**: Every commit needs a `Signed-off-by` line (`git commit -s`).
+- **Conventional Commits & Squash Merge**: Use the [Conventional Commits](https://www.conventionalcommits.org/) format where the repository enforces it. Many repos use squash merge, where the PR title becomes the commit message on the default branch — apply Conventional Commits format to PR titles as well. A reusable GitHub Actions workflow enforces this.
+
+## Context for AI Agents
+- Match existing code style
+- Do not refactor unrelated code in the same PR
+- Write tests for new functionality
+- Keep PRs focused and atomic
+- Backend (CardDAV) issues should be filed against ownCloud Core, not this repository