diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
index de2bfc3625e..ab8a7d4fe4d 100644
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -3,5 +3,5 @@ contact_links:
     url: https://github.com/react/react/issues/new/choose
     about: This issue tracker is not for bugs in React. Please file React issues here.
   - name: 🤔 Questions and Help
-    url: https://reactjs.org/community/support.html
+    url: https://react.dev/community
     about: This issue tracker is not for support questions. Please refer to the React community's help and discussion forums.
diff --git a/CLAUDE.md b/CLAUDE.md
index 3a081e6d517..3943097cc4f 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -4,7 +4,7 @@ This file provides guidance to Claude Code when working with this repository.
 
 ## Project Overview
 
-This is the React documentation website (react.dev), built with Next.js 15.1.11 and React 19. Documentation is written in MDX format.
+This is the React documentation website (react.dev), built with Next.js 15.1.12 and React 19. Documentation is written in MDX format.
 
 ## Development Commands
 
@@ -47,6 +47,6 @@ When editing files in `src/content/`, the appropriate skill will be auto-suggest
 For MDX components (DeepDive, Pitfall, Note, etc.), invoke `/docs-components`.
 For Sandpack code examples, invoke `/docs-sandpack`.
 
-See `.claude/docs/react-docs-patterns.md` for comprehensive style guidelines.
+See `.claude/skills/` for comprehensive style guidelines.
 
 Prettier is used for formatting (config in `.prettierrc`).
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 4c7e5ec74c2..93a01cd0dbf 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -40,7 +40,7 @@ Ignore this if you're specifically writing about ES5.
 
 #### Don't use ES6 features when equivalent ES5 features have no downsides.
 
-Remember that ES6 is still new to a lot of people. While we use it in many places (`const` / `let`, classes, arrow functions), if the equivalent ES5 code is just as straightforward and readable, consider using it.
+While we use ES6 in many places (`const` / `let`, classes, arrow functions), if the equivalent ES5 code is just as straightforward and readable, consider using it.
 
 In particular, you should prefer named `function` declarations over `const myFunction = () => ...` arrows for top-level functions. However, you *should* use arrow functions where they provide a tangible improvement (such as preserving `this` context inside a component). Consider both sides of the tradeoff when deciding whether to use a new feature.
 
@@ -49,26 +49,27 @@ In particular, you should prefer named `function` declarations over `const myFun
 For example, **don't** write this:
 
 ```js
-class MyComponent extends React.Component {
-  state = {value: ''};
-  handleChange = (e) => {
-    this.setState({value: e.target.value});
+function Greeting({isLoggedIn}) {
+  return do {
+    if (isLoggedIn) {
+      <h1>Welcome back!</h1>;
+    } else {
+      <h1>Please sign in.</h1>;
+    }
   };
 }
 ```
 
+The [`do` expression syntax](https://github.com/tc39/proposal-do-expressions) is still experimental.
+
 Instead, **do** write this:
 
 ```js
-class MyComponent extends React.Component {
-  constructor(props) {
-    super(props);
-    this.handleChange = this.handleChange.bind(this);
-    this.state = {value: ''};
-  }
-  handleChange(e) {
-    this.setState({value: e.target.value});
+function Greeting({isLoggedIn}) {
+  if (isLoggedIn) {
+    return <h1>Welcome back!</h1>;
   }
+  return <h1>Please sign in.</h1>;
 }
 ```
 
diff --git a/README.md b/README.md
index 182192cb552..b02001c3431 100644
--- a/README.md
+++ b/README.md
@@ -7,14 +7,15 @@ This repo contains the source code and documentation powering [react.dev](https:
 ### Prerequisites
 
 1. Git
-1. Node: any version starting with v16.8.0 or greater
-1. Yarn: See [Yarn website for installation instructions](https://yarnpkg.com/lang/en/docs/install/)
+1. Node: v18.18.0 or greater (see supported versions in [`package.json`](./package.json))
+1. Yarn Classic 1.22.22: See [Yarn website for installation instructions](https://classic.yarnpkg.com/en/docs/install/)
 1. A fork of the repo (for any contributions)
 1. A clone of the [react.dev repo](https://github.com/reactjs/react.dev) on your local machine
 
 ### Installation
 
 1. `cd react.dev` to go into the project root
+2. `git remote add my-fork-name https://github.com/YOUR_USERNAME/react.dev.git` to add your fork as a remote. Replace `YOUR_USERNAME` with your GitHub username. You only need to do this once.
 3. `yarn` to install the website's npm dependencies
 
 ### Running locally
@@ -39,13 +40,14 @@ The documentation is divided into several sections with a different tone and pur
 1. Follow the ["Running locally"](#running-locally) instructions
 1. Save the files and check in the browser
   1. Changes to React components in `src` will hot-reload
-  1. Changes to markdown files in `content` will hot-reload
-  1. If working with plugins, you may need to remove the `.cache` directory and restart the server
+  1. Changes to markdown files in `src/content` will hot-reload
+  1. If working with plugins, you may need to remove the `node_modules/.cache/react-docs-mdx` directory and restart the server
 
 ### Test the change
 
 1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
-2. Run `yarn check-all`. (This will run Prettier, ESLint and validate types.)
+2. Run `yarn check-all`. (This will apply Prettier and ESLint fixes, validate types, and generate RSS.)
+3. Run `yarn ci-check` to run the same checks as CI.
 
 ### Push it
 
@@ -57,7 +59,7 @@ The documentation is divided into several sections with a different tone and pur
 
 ## Translation
 
-If you are interested in translating `react.dev`, please see the current translation efforts [here](https://github.com/reactjs/react.dev/issues/4135).
+If you are interested in translating `react.dev`, please see the current translation efforts [here](https://react.dev/community/translations).
 
 ## License
 Content submitted to [react.dev](https://react.dev/) is CC-BY-4.0 licensed, as found in the [LICENSE-DOCS.md](https://github.com/reactjs/react.dev/blob/main/LICENSE-DOCS.md) file.
diff --git a/package.json b/package.json
index 20af6969d11..f7a4a352526 100644
--- a/package.json
+++ b/package.json
@@ -111,7 +111,7 @@
     "webpack-bundle-analyzer": "^4.5.0"
   },
   "engines": {
-    "node": ">=16.8.0"
+    "node": "^18.18.0 || ^19.8.0 || >=20.0.0"
   },
   "nextBundleAnalysis": {
     "budget": null,