Update license status and add proprietary license file

Signed-off-by: ryjiang <jiangruiyi@gmail.com>

LICENSE_PROPRIETARY.txt

@@ -0,0 +1,15 @@
+Copyright © 2025 ZILLIZ INC.
+
+From version 2.6.0 onward, this software is distributed under a proprietary license.
+
+You may:
+- Use the official binaries and build artifacts provided by the Attu project;
+- Submit bug reports, issues, and feature requests via GitHub;
+
+You may NOT:
+- Access, view, modify, copy, or redistribute the source code of versions 2.6.0 and above;
+- Reverse engineer, decompile, or create derivative works from the closed-source releases.
+
+Earlier versions (<= 2.5.12) remain available under the Apache License 2.0.
+
+This project is no longer open source from version 2.6.0 forward.

README.md

@@ -1,14 +1,20 @@
 # Attu
 
-![GitHub release (latest by date)](https://img.shields.io/github/v/release/zilliztech/attu)
-![License](https://img.shields.io/github/license/zilliztech/attu)
-[![downloads](https://img.shields.io/docker/pulls/zilliz/attu)](https://hub.docker.com/r/zilliz/attu/tags)
-![GitHub last commit](https://img.shields.io/github/last-commit/zilliztech/attu)
-![GitHub stars](https://img.shields.io/github/stars/zilliztech/attu)
-[![中文](https://img.shields.io/badge/README-中文-blue.svg)](./README_CN.md)
-[![Contributors](https://img.shields.io/github/contributors/zilliztech/attu)](https://github.com/zilliztech/attu/graphs/contributors)
-[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/zilliztech/attu/pulls)
+## 📢 License and Open Source Status
 
+Attu was open source under the **Apache License 2.0** up to version `v2.5.12`.
+
+Starting from **version `v2.6.0`**, Attu is no longer open source. The source code is no longer publicly available, and development has moved to a closed-source model.
+
+You can still:
+
+- Use and fork versions up to and including `v2.5.12`;
+- Download and use binaries for future releases;
+- Report bugs or suggest features via GitHub issues.
+
+🔒 For details, see [`LICENSE_PROPRIETARY.txt`](./LICENSE_PROPRIETARY.txt).
+
+## Documentation
 Attu is designed to manage and interact with Milvus, offering features such as:
 
 - **Database, Collection, and Partition Management:** Efficiently organize and manage your Milvus setup.
@@ -105,7 +111,7 @@ docker run -d --name milvus_standalone -p 19530:19530 -p 9091:9091 milvusdb/milv
 2. Start Attu:
 
 ```bash
-docker run -p 8000:3000 -e MILVUS_URL=localhost:19530 zilliz/attu:v2.5
+docker run -p 8000:3000 -e MILVUS_URL=localhost:19530 zilliz/attu:v2.6
 ```
 
 3. Open your browser and navigate to `http://localhost:8000`
@@ -118,6 +124,7 @@ Before you begin, make sure that you have Milvus installed on either [Zilliz Clo
 
 | Milvus Version | Recommended Attu Version                                           |
 | -------------- | ------------------------------------------------------------------ |
+| 2.6.x          | [v2.6.0](https://github.com/zilliztech/attu/releases/tag/v2.6.0)   |
 | 2.5.x          | [v2.5.10](https://github.com/zilliztech/attu/releases/tag/v2.5.10) |
 | 2.4.x          | [v2.4.12](https://github.com/zilliztech/attu/releases/tag/v2.4.12) |
 | 2.3.x          | [v2.3.5](https://github.com/zilliztech/attu/releases/tag/v2.3.5)   |
@@ -129,7 +136,7 @@ Before you begin, make sure that you have Milvus installed on either [Zilliz Clo
 Here are the steps to start a container for running Attu:
 
 ```code
-docker run -p 8000:3000 -e MILVUS_URL={milvus server IP}:19530 zilliz/attu:v2.5
+docker run -p 8000:3000 -e MILVUS_URL={milvus server IP}:19530 zilliz/attu:v2.6
 ```
 
 Make sure that the Attu container can access the Milvus IP address. After starting the container, open your web browser and enter `http://{ Attu IP }:8000` to view the Attu GUI.
@@ -161,7 +168,7 @@ docker run -p 8000:3000 \
 -e PRIVATE_KEY_PATH=/app/tls/client.key \
 -e CERT_CHAIN_PATH=/app/tls/client.pem \
 -e SERVER_NAME=your_server_name \
-zilliz/attu:v2.5
+zilliz/attu:v2.6
 ```
 
 #### Custom Server Port Example
@@ -175,7 +182,7 @@ docker run --network host \
 -e ATTU_LOG_LEVEL=info  \
 -e SERVER_NAME=your_server_name \
 -e SERVER_PORT=8080 \
-zilliz/attu:v2.5
+zilliz/attu:v2.6
 ```
 
 ### Running Attu within Kubernetes
@@ -206,54 +213,6 @@ If you prefer to use a desktop application, you can download the [desktop versio
   sudo xattr -rd com.apple.quarantine /Applications/attu.app
 ```
 
-## Development
-
-### Prerequisites
-
-- Node.js 16.x or later
-- Yarn package manager
-- Docker (for local development)
-
-### Setup Development Environment
-
-1. Clone the repository:
-
-```bash
-git clone https://github.com/zilliztech/attu.git
-cd attu
-```
-
-2. Install dependencies:
-
-```bash
-yarn install
-```
-
-3. Start development server:
-
-```bash
-yarn start
-```
-
-### Build Docker Image Locally
-
-- Dev: `yarn run build:dev`
-- Release: `yarn run build:release`
-
-### Running Tests
-
-```bash
-yarn test
-```
-
-## Contributing
-
-We welcome contributions from the community! Please read our [Contributing Guidelines](CONTRIBUTING.md) before submitting pull requests.
-
-### Code of Conduct
-
-Please read our [Code of Conduct](CODE_OF_CONDUCT.md) to keep our community approachable and respectable.
-
 ## FAQ
 
 - I can't log into the system
@@ -291,10 +250,6 @@ Here are some helpful resources to get you started with Milvus:
 
 <a href="https://discord.com/invite/8uyFbECzPX"><img style="display:block; margin: '8px';" src="https://assets-global.website-files.com/6257adef93867e50d84d30e2/636e0b5061df29d55a92d945_full_logo_blurple_RGB.svg" alt="license"/></a>
 
-## License
-
-Attu is licensed under the [Apache License 2.0](LICENSE). See the LICENSE file for details.
-
 ## Changelog
 
 See our [CHANGELOG.md](CHANGELOG.md) for a list of changes between versions.