chore(deps): harmonize Node.js to 22.19.0 from CircleCI image

.github/workflows/example-cypress-github-action.yml

@@ -25,6 +25,9 @@ jobs:
       options: --user 1001
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
       - uses: cypress-io/github-action@v6
         with:
           # Only the Electron browser is available with cypress/base
@@ -47,6 +50,9 @@ jobs:
       options: --user 1001
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
       - uses: cypress-io/github-action@v6
         with:
           working-directory: examples/basic
@@ -68,6 +74,9 @@ jobs:
       options: --user 1001
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
       - uses: cypress-io/github-action@v6
         with:
           # Using Cypress project with no Cypress version pre-installed

.github/workflows/example-tests.yml

@@ -31,6 +31,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
       - name: Run test script
         working-directory: examples/${{ matrix.directory }}
         run: ./scripts/test.sh

.node-version

@@ -0,0 +1 @@
+22.19.0

.nvmrc

@@ -0,0 +1 @@
+22.19.0

CONTRIBUTING.md

@@ -207,3 +207,14 @@ In CI, the images are built and tested in real `arm64` and `x64` architectures.
 │  └──────────────────────────────────────┘   │
 └─────────────────────────────────────────────┘
 ```
+
+## Node.js
+
+The version of Node.js to be used in GitHub Actions workflows, and when running locally, is defined in [.node-version](.node-version).
+This version is aligned with the Node.js version provided by the CircleCI machine image used in the config [circle.yml](circle.yml).
+You can find a list of tools on [node-version-usage](https://github.com/shadowspawn/node-version-usage) to switch the version of Node.js based on [.node-version](.node-version).
+For convenience, [.nvmrc](.nvmrc) also contains an identical setting of Node.js version for use with the POSIX version of [nvm](https://github.com/nvm-sh/nvm).
+
+If the CircleCI machine image in [circle.yml](circle.yml) is updated, then [.node-version](.node-version) and [.nvmrc](.nvmrc) should also be updated to use the same version of Node.js throughout.
+
+This is separate from the version of Node.js to be installed and used within Cypress Docker images, which is defined in the [factory NODE_VERSION](./factory/README.md#node_version) document section.

circle.yml

@@ -49,6 +49,18 @@ commands:
               circleci-agent step halt
             fi
 
+# Available CircleCI Ubuntu machine images are listed in
+# https://circleci.com/developer/images?imageType=machine
+# ubuntu-2404 images are listed under
+# https://circleci.com/developer/machine/image/ubuntu-2404
+# New releases are generally announced in https://discuss.circleci.com/c/ecosystem/63
+#
+# The currently used image ubuntu-2404:2025.09.1 is described in
+# https://discuss.circleci.com/t/ubuntu-22-04-24-04-q3-edge-release-including-cuda/54106
+#
+# When updating the machine image, update also .node-version and .nvmrc to the same version of Node.js
+# used by the new machine image.
+
 jobs:
   lint:
     machine: