chore: drop the open licence and stop taking pull requests

The site exists to be read, not reused. It is no longer licensed for
anything, and external contributions have moved to issues only.

- Replace the MIT + CC-BY-4.0 dual licence with an all-rights-reserved
  notice. No permission is granted to copy, modify or distribute any part
  of the repository; reading and linking stay free.
- Carve out third-party components explicitly. Rspress, React, Rsbuild and
  Tailwind CSS keep their own licences, and an all-rights-reserved notice
  that did not say so would be wrong.
- Rewrite CONTRIBUTING around issues rather than pull requests, and say
  plainly that PRs will be closed without review.
- Mark the package UNLICENSED, the npm convention for proprietary code.

Note: this makes the repository source-available, not open source — a
licence that forbids all reuse cannot meet the OSI definition. The README
no longer calls it open source.

Closing PRs for real also needs the "Pull requests" feature switched off
in the repository's GitHub settings; that is not something this commit can
do.

CONTRIBUTING.md

@@ -1,8 +1,46 @@
 # Contributing to OnixByte Homepage
 
+This repository holds the company website. It is published openly so that the
+Rspress set-up can be read and learned from, but it is **not open for external
+contributions**.
+
+## We do not accept pull requests
+
+External pull requests are not accepted and will be closed without review.
+This is not a comment on the work — it is that a company website is edited by
+the people accountable for what it says, and merging outside changes would put
+content on the site that nobody here has signed off.
+
+## Issues are welcome
+
+Please do open an issue if you spot:
+
+- a broken or dead link
+- something factually wrong, in either language
+- a typo, or a place where the British English or Chinese wording is off
+- an accessibility problem
+- a build or runtime bug you can reproduce
+
+Issues are read, and genuine problems are usually fixed. If a report turns into
+a change, we will make that change ourselves.
+
+## Licence
+
+Nothing in this repository is licensed for reuse. See [LICENCE](./LICENCE) —
+copyright is retained and no permission is granted to copy, modify or
+distribute any part of it. Reading it and linking to it are fine.
+
+Third-party software this project depends on keeps its own licence; see
+[THIRD_PARTY_NOTICES.md](./THIRD_PARTY_NOTICES.md).
+
+---
+
+The rest of this document is for people working on the site internally.
+
 ## Development Setup
 
-This project uses [Rspress](https://rspress.rs) as the static site framework and pnpm as the package manager.
+This project uses [Rspress](https://rspress.rs) as the static site framework and
+pnpm as the package manager.
 
 ```bash
 pnpm install
@@ -23,8 +61,8 @@ theme/          # Custom theme overrides
 - Write content in both English (British) and Simplified Chinese. British
   spelling is required throughout — interface text, documentation, code
   comments and commit messages (`customised`, `centre`, `colour`, and so on).
-- Blog posts and documentation articles are licensed under CC-BY-4.0.
-- Code contributions are licensed under MIT.
+- Marketing pages address the reader as 您; the technical blog keeps the
+  peer-to-peer 你.
 
 ## Navigation and Sidebars
 
@@ -42,8 +80,9 @@ the theme:
 Do not add a `_meta.json` next to `_nav.json` at the root of a locale
 directory; doing so collapses the whole site into one flat sidebar.
 
-## Pull Request Process
+## Before Committing
 
-1. Ensure the site builds cleanly: `pnpm build`
-2. Run linting: `pnpm lint`
-3. If adding a new page, include both `en-gb` and `zh-hans` versions.
+1. Ensure the site builds: `pnpm build:com` and `pnpm build:cn`
+2. Type-check: `pnpm typecheck`
+3. Lint and format: `pnpm lint` and `pnpm format`
+4. If adding a new page, include both `en-gb` and `zh-hans` versions.

LICENCE

@@ -1,59 +1,31 @@
-MIT Licence
+Copyright © 2026 Changsha OnixByte Technology Co., Ltd.
+版权所有 © 2026 长沙曜珀科技有限公司
 
-Copyright (c) 2026 OnixByte
+All rights reserved. 保留所有权利。
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+This repository and its contents — source code, build scripts, theme
+components, configuration, and all written content under `docs/` — are the
+property of Changsha OnixByte Technology Co., Ltd.
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+No licence is granted. No permission is given to use, copy, modify, merge,
+publish, distribute, sublicense or sell any part of this repository, in whole
+or in part, for any purpose, whether commercial or otherwise.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
----
-CC-BY-4.0
-
-Copyright (c) 2026 OnixByte
-
-You are free to:
-- Share - copy and redistribute the material in any medium or format for any purpose,
-  even commercially.
-- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
-
-The licensor cannot revoke these freedoms as long as you follow the license terms.
-
-Under the following terms:
-- Attribution — You must give appropriate credit, provide a link to the license, and indicate
-  if changes were made. You may do so in any reasonable manner, but not in any way that suggests
-  the licensor endorses you or your use.
-
-No additional restrictions — You may not apply legal terms or technological measures that
- legally restrict others from doing anything the license permits.
-
-NOTICES
-
-You do not have to comply with the license for elements of the material in the public domain or
-where your use is permitted by an applicable exception or limitation.
-
-No warranties are given. The license may not give you all of the permissions necessary for your
-intended use. For example, other rights such as publicity, privacy, or moral rights may limit
-how you use the material.
+This repository is published for reading. You are welcome to read it, to learn
+from it, and to link to it. Those things need no permission.
 
 ---
 
-This project applies a dual-licensing model:
+Third-party components
 
-- Code (source code, build scripts, theme, configuration) is licensed under the MIT License (above).
-- Content (blog posts, documentation articles, and other written content under docs/) is licensed under the Creative Commons Attribution 4.0 International License (CC-BY-4.0).
+This project depends on third-party software, including Rspress, React,
+Rsbuild and Tailwind CSS. Those components remain under their own licences,
+and nothing in this notice changes or restricts the rights they grant you.
+See THIRD_PARTY_NOTICES.md for the direct dependencies and their terms.
 
-To view a copy of CC-BY-4.0, visit https://creativecommons.org/licenses/by/4.0/
+---
+
+Enquiries
+
+If you would like to use any part of this repository, write to
+business@onixbyte.com.

package.json

@@ -2,6 +2,7 @@
   "name": "onixbyte-homepage",
   "version": "1.0.0",
   "private": true,
+  "license": "UNLICENSED",
   "type": "module",
   "packageManager": "pnpm@12.5.1",
   "engines": {