From a18b846b9812a41da7dabe6b19d81614712bf286 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 19:29:20 -0400
Subject: [PATCH 1/9] Configure parallel steps for workflows.

---
 .../workflows/reusable-check-built-files.yml  | 11 ++++++++
 .../workflows/reusable-end-to-end-tests.yml   | 16 +++++++++---
 .../workflows/reusable-phpunit-tests-v3.yml   | 25 ++++++++++++++++---
 .../reusable-test-core-build-process.yml      |  5 ++++
 ...sable-test-local-docker-environment-v1.yml | 17 +++++++++++--
 5 files changed, 66 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/reusable-check-built-files.yml b/.github/workflows/reusable-check-built-files.yml
index 033b2a46ac3e9..e0c6e008b462f 100644
--- a/.github/workflows/reusable-check-built-files.yml
+++ b/.github/workflows/reusable-check-built-files.yml
@@ -51,6 +51,7 @@ jobs:
       # passing a custom cache suffix ensures that the cache is flushed at least once per week.
       - name: Install Composer dependencies
         uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+        background: true
         with:
           custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
 
@@ -62,19 +63,29 @@ jobs:
           git --version
 
       - name: Install npm Dependencies
+        background: true
         run: npm ci
 
+      - name: Wait for install commands
+        wait-all:
+
       - name: Run SASS precommit tasks
+        background: true
         run: npm run grunt precommit:css
 
       - name: Run Emoji precommit task
+        background: true
         run: npm run grunt precommit:emoji
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run certificate tasks
+        background: true
         run: npm run grunt copy:certificates
 
+      - name: Wait for build commands
+        wait-all:
+
       - name: Build WordPress
         run: npm run build:dev
 
diff --git a/.github/workflows/reusable-end-to-end-tests.yml b/.github/workflows/reusable-end-to-end-tests.yml
index 87f90f1b53039..0a50cc733e54a 100644
--- a/.github/workflows/reusable-end-to-end-tests.yml
+++ b/.github/workflows/reusable-end-to-end-tests.yml
@@ -103,11 +103,15 @@ jobs:
         run: npx playwright install --with-deps chromium
 
       - name: Build WordPress
+        background: true
         run: npm run build
 
       - name: Start Docker environment
-        run: |
-          npm run env:start
+        background: true
+        run: npm run env:start
+
+      - name: Wait for build & Docker commands
+        wait-all:
 
       - name: Log running Docker containers
         run: docker ps -a
@@ -122,12 +126,14 @@ jobs:
           docker compose run --rm php locale -a
 
       - name: Install WordPress
+        background: true
+        run: npm run env:install
         env:
           LOCAL_SCRIPT_DEBUG: ${{ inputs.LOCAL_SCRIPT_DEBUG }}
-        run: npm run env:install
 
       - name: Install Gutenberg
         if: ${{ inputs.install-gutenberg }}
+        background: true
         run: |
           npm run env:cli -- plugin install gutenberg \
           ${{ inputs.gutenberg-version && '--version="${GUTENBERG_VERSION}"' || '' }} \
@@ -136,11 +142,15 @@ jobs:
           GUTENBERG_VERSION: ${{ inputs.gutenberg-version }}
 
       - name: Install additional languages
+        background: true
         run: |
           npm run env:cli -- language core install de_DE --path="/var/www/${LOCAL_DIR}"
           npm run env:cli -- language plugin install de_DE --all --path="/var/www/${LOCAL_DIR}"
           npm run env:cli -- language theme install de_DE --all --path="/var/www/${LOCAL_DIR}"
 
+      - name: Wait for install commands
+        wait-all:
+
       - name: Run E2E tests
         run: npm run test:e2e
 
diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index 7e10a030953a4..8bb9f1162fb47 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -137,6 +137,7 @@ jobs:
 
       - name: Set up Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        background: true
         with:
           node-version-file: '.nvmrc'
           cache: npm
@@ -150,22 +151,36 @@ jobs:
       ##
       - name: Set up PHP
         uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+        background: true
         with:
           php-version: '${{ inputs.php }}'
           coverage: none
 
+      - name: Wait for setup steps
+        wait-all:
+
       # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
       # passing a custom cache suffix ensures that the cache is flushed at least once per week.
       - name: Install Composer dependencies
         uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+        background: true
         with:
           custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
 
       - name: Install npm dependencies
+        background: true
         run: npm ci
 
+      - name: Wait for install commands
+        wait-all:
+
       - name: Build WordPress
         run: npm run build:dev
+        background: true
+
+      - name: Start Docker environment
+        background: true
+        run: npm run env:start
 
       - name: General debug information
         run: |
@@ -180,9 +195,8 @@ jobs:
         run: |
           docker -v
 
-      - name: Start Docker environment
-        run: |
-          npm run env:start
+      - name: Wait for build script & Docker environment
+        wait-all:
 
       - name: Log running Docker containers
         run: docker ps -a
@@ -198,6 +212,7 @@ jobs:
           LOCAL_DB_CMD: ${{ env.LOCAL_DB_TYPE == 'mariadb' && contains( fromJSON('["5.5", "10.0", "10.1", "10.2", "10.3"]'), env.LOCAL_DB_VERSION ) && 'mysql' || env.LOCAL_DB_TYPE }}
 
       - name: Install WordPress
+        background: true
         run: npm run env:install
 
       # Installs PCOV as the code coverage driver for the PHPUnit run below.
@@ -213,6 +228,7 @@ jobs:
       #   during test warmup. The default of 64 is far too low here.
       - name: Install PCOV coverage driver
         if: ${{ inputs.coverage-report }}
+        background: true
         run: |
           docker compose exec -T -u 0 php sh -c '
             pecl install --force pcov-1.0.12 &&
@@ -225,6 +241,9 @@ jobs:
             php -m | grep -i pcov
           '
 
+      - name: Wait for installation steps
+        wait-all:
+
       - name: Run external HTTP tests
         if: ${{ ! inputs.multisite && ! inputs.phpunit-test-groups && ! inputs.coverage-report }}
         continue-on-error: ${{ inputs.allow-errors }}
diff --git a/.github/workflows/reusable-test-core-build-process.yml b/.github/workflows/reusable-test-core-build-process.yml
index 1566d1583a807..d71165de83f2b 100644
--- a/.github/workflows/reusable-test-core-build-process.yml
+++ b/.github/workflows/reusable-test-core-build-process.yml
@@ -87,15 +87,20 @@ jobs:
       - name: Install Composer dependencies
         if: ${{ inputs.test-certificates }}
         uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+        background: true
         with:
           custom-cache-suffix: ${{ steps.get-date.outputs.date }}
 
       - name: Set up Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        background: true
         with:
           node-version-file: '.nvmrc'
           cache: npm
 
+      - name: Wait for Node.js & Composer commands
+        wait-all:
+
       - name: Log debug information
         run: |
           npm --version
diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
index 8f1a556afa2b4..d2d2629635538 100644
--- a/.github/workflows/reusable-test-local-docker-environment-v1.yml
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -93,6 +93,7 @@ jobs:
 
       - name: Set up Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        background: true
         with:
           node-version-file: '.nvmrc'
           cache: npm
@@ -106,21 +107,31 @@ jobs:
       ##
       - name: Set up PHP
         uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+        background: true
         with:
           php-version: '${{ inputs.php }}'
           coverage: none
 
+      - name: Wait for setup commands
+        wait-all:
+
       # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
       # passing a custom cache suffix ensures that the cache is flushed at least once per week.
       - name: Install Composer dependencies
         uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+        background: true
         with:
           custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
 
       - name: Install npm dependencies
+        background: true
         run: npm ci
 
+      - name: Wait for install commands
+        wait-all:
+
       - name: Build WordPress
+        background: true
         run: npm run build:dev
 
       - name: General debug information
@@ -137,8 +148,10 @@ jobs:
           docker -v
 
       - name: Start Docker environment
-        run: |
-          npm run env:start
+        run: npm run env:start
+
+      - name: Wait for build script & Docker environment
+        wait-all:
 
       - name: Log running Docker containers
         run: docker ps -a

From 38fca41bf9926ef5655e5c14a8cadea5577a387e Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 20:59:58 -0400
Subject: [PATCH 2/9] Correct step documentation.

---
 .github/workflows/reusable-phpunit-tests-v3.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index 8bb9f1162fb47..047d55acd29e5 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -105,9 +105,10 @@ jobs:
   # - Sets up PHP.
   # - Installs Composer dependencies.
   # - Installs npm dependencies
+  # - Builds WordPress to run from the `src` directory.
+  # - Starts the WordPress Docker container.
   # - Logs general debug information about the runner.
   # - Logs Docker debug information (about the Docker installation within the runner).
-  # - Starts the WordPress Docker container.
   # - Logs the running Docker containers.
   # - Logs debug information about what's installed within the WordPress Docker containers.
   # - Install WordPress within the Docker container.

From 79d8dde0ea43f111dd277e5c41d8e29e4613bb10 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:00:50 -0400
Subject: [PATCH 3/9] Improvements to the order of steps.

---
 .../workflows/reusable-end-to-end-tests.yml   | 41 ++++++++++++++++---
 1 file changed, 35 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/reusable-end-to-end-tests.yml b/.github/workflows/reusable-end-to-end-tests.yml
index 0a50cc733e54a..e0fba0e5b48d0 100644
--- a/.github/workflows/reusable-end-to-end-tests.yml
+++ b/.github/workflows/reusable-end-to-end-tests.yml
@@ -49,8 +49,10 @@ jobs:
   # - Sets environment variables.
   # - Checks out the repository.
   # - Sets up Node.js.
-  # - Logs debug information about the GitHub Action runner.
+  # - Sets up PHP.
   # - Installs npm dependencies.
+  # - Installs Composer dependencies.
+  # - Logs debug information about the GitHub Action runner.
   # - Install Playwright browsers.
   # - Builds WordPress to run from the `build` directory.
   # - Starts the WordPress Docker container.
@@ -87,6 +89,34 @@ jobs:
           node-version-file: '.nvmrc'
           cache: npm
 
+      ##
+      # This allows Composer dependencies to be installed using a single step.
+      #
+      # Since the tests are currently run within the Docker containers where the PHP version varies,
+      # the same PHP version needs to be configured for the action runner machine so that the correct
+      # dependency versions are installed and cached.
+      ##
+      - name: Set up PHP
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+        background: true
+        with:
+          php-version: '${{ inputs.php }}'
+          coverage: none
+
+      - name: Wait for setup steps
+        wait-all:
+
+      - name: Install npm Dependencies
+        run: npm ci
+
+      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+      - name: Install Composer dependencies
+        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+        background: true
+        with:
+          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
       - name: Log debug information
         run: |
           npm --version
@@ -95,13 +125,13 @@ jobs:
           git --version
           locale -a
 
-      - name: Install npm Dependencies
-        run: npm ci
-
       - name: Install Playwright browsers
         if: ${{ inputs.install-playwright }}
         run: npx playwright install --with-deps chromium
 
+      - name: Wait for install commands
+        wait-all:
+
       - name: Build WordPress
         background: true
         run: npm run build
@@ -126,7 +156,6 @@ jobs:
           docker compose run --rm php locale -a
 
       - name: Install WordPress
-        background: true
         run: npm run env:install
         env:
           LOCAL_SCRIPT_DEBUG: ${{ inputs.LOCAL_SCRIPT_DEBUG }}
@@ -148,7 +177,7 @@ jobs:
           npm run env:cli -- language plugin install de_DE --all --path="/var/www/${LOCAL_DIR}"
           npm run env:cli -- language theme install de_DE --all --path="/var/www/${LOCAL_DIR}"
 
-      - name: Wait for install commands
+      - name: Wait for WP-CLI install commands
         wait-all:
 
       - name: Run E2E tests

From 2b76acc126f2aa9a276afb906cf4feffd5197544 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:12:11 -0400
Subject: [PATCH 4/9] Update `zizmor`.

---
 .github/workflows/reusable-workflow-lint.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/reusable-workflow-lint.yml b/.github/workflows/reusable-workflow-lint.yml
index 127a392a2dd28..bd2d624fa1e4d 100644
--- a/.github/workflows/reusable-workflow-lint.yml
+++ b/.github/workflows/reusable-workflow-lint.yml
@@ -58,7 +58,7 @@ jobs:
         uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
 
       - name: Run zizmor
-        run: uvx zizmor@1.24.1 --persona=regular --format=sarif --strict-collection . > results.sarif
+        run: uvx zizmor@1.26.1 --persona=regular --format=sarif --strict-collection . > results.sarif
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 

From 29b01f82768cbce952f7f785dc138ade6352bcee Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:43:05 -0400
Subject: [PATCH 5/9] Switch from shorthand `parallel` grouping.

---
 .../workflows/reusable-check-built-files.yml  |  69 ++++----
 .../workflows/reusable-end-to-end-tests.yml   | 144 ++++++++--------
 .../workflows/reusable-phpunit-tests-v3.yml   | 157 ++++++++----------
 .../reusable-test-core-build-process.yml      | 100 ++++++-----
 ...sable-test-local-docker-environment-v1.yml | 137 +++++++--------
 5 files changed, 284 insertions(+), 323 deletions(-)

diff --git a/.github/workflows/reusable-check-built-files.yml b/.github/workflows/reusable-check-built-files.yml
index e0c6e008b462f..29326baf4ba00 100644
--- a/.github/workflows/reusable-check-built-files.yml
+++ b/.github/workflows/reusable-check-built-files.yml
@@ -18,8 +18,8 @@ jobs:
   # - Checks out the repository.
   # - Sets up Node.js.
   # - Installs Composer dependencies.
-  # - Logs general debug information about the runner.
   # - Installs npm dependencies.
+  # - Logs general debug information about the runner.
   # - Builds CSS file using SASS.
   # - Builds Emoji files.
   # - Builds bundled Root Certificate files.
@@ -47,44 +47,35 @@ jobs:
           node-version-file: '.nvmrc'
           cache: npm
 
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        background: true
-        with:
-          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
-
-      - name: Log debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-
-      - name: Install npm Dependencies
-        background: true
-        run: npm ci
-
-      - name: Wait for install commands
-        wait-all:
-
-      - name: Run SASS precommit tasks
-        background: true
-        run: npm run grunt precommit:css
-
-      - name: Run Emoji precommit task
-        background: true
-        run: npm run grunt precommit:emoji
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Run certificate tasks
-        background: true
-        run: npm run grunt copy:certificates
-
-      - name: Wait for build commands
-        wait-all:
+      - parallel:
+        - name: Install npm Dependencies
+          run: npm ci
+
+        # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+        # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+        - name: Log debug information
+          run: |
+            npm --version
+            node --version
+            curl --version
+            git --version
+
+      - parallel:
+        - name: Run SASS precommit tasks
+          run: npm run grunt precommit:css
+
+        - name: Run Emoji precommit task
+          run: npm run grunt precommit:emoji
+          env:
+            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+        - name: Run certificate tasks
+          run: npm run grunt copy:certificates
 
       - name: Build WordPress
         run: npm run build:dev
diff --git a/.github/workflows/reusable-end-to-end-tests.yml b/.github/workflows/reusable-end-to-end-tests.yml
index e0fba0e5b48d0..1f1c25dfbee2e 100644
--- a/.github/workflows/reusable-end-to-end-tests.yml
+++ b/.github/workflows/reusable-end-to-end-tests.yml
@@ -52,8 +52,8 @@ jobs:
   # - Sets up PHP.
   # - Installs npm dependencies.
   # - Installs Composer dependencies.
-  # - Logs debug information about the GitHub Action runner.
   # - Install Playwright browsers.
+  # - Logs debug information about the GitHub Action runner.
   # - Builds WordPress to run from the `build` directory.
   # - Starts the WordPress Docker container.
   # - Logs the running Docker containers.
@@ -83,65 +83,55 @@ jobs:
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
           persist-credentials: false
 
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
-
-      ##
-      # This allows Composer dependencies to be installed using a single step.
-      #
-      # Since the tests are currently run within the Docker containers where the PHP version varies,
-      # the same PHP version needs to be configured for the action runner machine so that the correct
-      # dependency versions are installed and cached.
-      ##
-      - name: Set up PHP
-        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
-        background: true
-        with:
-          php-version: '${{ inputs.php }}'
-          coverage: none
-
-      - name: Wait for setup steps
-        wait-all:
-
-      - name: Install npm Dependencies
-        run: npm ci
-
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        background: true
-        with:
-          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
-
-      - name: Log debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-          locale -a
-
-      - name: Install Playwright browsers
-        if: ${{ inputs.install-playwright }}
-        run: npx playwright install --with-deps chromium
-
-      - name: Wait for install commands
-        wait-all:
-
-      - name: Build WordPress
-        background: true
-        run: npm run build
-
-      - name: Start Docker environment
-        background: true
-        run: npm run env:start
-
-      - name: Wait for build & Docker commands
-        wait-all:
+      - parallel:
+        - name: Set up Node.js
+          uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+          with:
+            node-version-file: '.nvmrc'
+            cache: npm
+
+        ##
+        # This allows Composer dependencies to be installed using a single step.
+        #
+        # Since the tests are currently run within the Docker containers where the PHP version varies,
+        # the same PHP version needs to be configured for the action runner machine so that the correct
+        # dependency versions are installed and cached.
+        ##
+        - name: Set up PHP
+          uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+          with:
+            php-version: '${{ inputs.php }}'
+            coverage: none
+
+      - parallel:
+        - name: Install npm Dependencies
+          run: npm ci
+
+        # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+        # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+        - name: Install Playwright browsers
+          if: ${{ inputs.install-playwright }}
+          run: npx playwright install --with-deps chromium
+
+        - name: Log debug information
+          run: |
+            npm --version
+            node --version
+            curl --version
+            git --version
+            locale -a
+
+      - parallel:
+        - name: Build WordPress
+          run: npm run build
+
+        - name: Start Docker environment
+          run: npm run env:start
 
       - name: Log running Docker containers
         run: docker ps -a
@@ -160,25 +150,21 @@ jobs:
         env:
           LOCAL_SCRIPT_DEBUG: ${{ inputs.LOCAL_SCRIPT_DEBUG }}
 
-      - name: Install Gutenberg
-        if: ${{ inputs.install-gutenberg }}
-        background: true
-        run: |
-          npm run env:cli -- plugin install gutenberg \
-          ${{ inputs.gutenberg-version && '--version="${GUTENBERG_VERSION}"' || '' }} \
-          --path="/var/www/${LOCAL_DIR}"
-        env:
-          GUTENBERG_VERSION: ${{ inputs.gutenberg-version }}
-
-      - name: Install additional languages
-        background: true
-        run: |
-          npm run env:cli -- language core install de_DE --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- language plugin install de_DE --all --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- language theme install de_DE --all --path="/var/www/${LOCAL_DIR}"
-
-      - name: Wait for WP-CLI install commands
-        wait-all:
+      - parallel:
+        - name: Install Gutenberg
+          if: ${{ inputs.install-gutenberg }}
+          run: |
+            npm run env:cli -- plugin install gutenberg \
+            ${{ inputs.gutenberg-version && '--version="${GUTENBERG_VERSION}"' || '' }} \
+            --path="/var/www/${LOCAL_DIR}"
+          env:
+            GUTENBERG_VERSION: ${{ inputs.gutenberg-version }}
+
+        - name: Install additional languages
+          run: |
+            npm run env:cli -- language core install de_DE --path="/var/www/${LOCAL_DIR}"
+            npm run env:cli -- language plugin install de_DE --all --path="/var/www/${LOCAL_DIR}"
+            npm run env:cli -- language theme install de_DE --all --path="/var/www/${LOCAL_DIR}"
 
       - name: Run E2E tests
         run: npm run test:e2e
diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index 047d55acd29e5..80f562d2dbea3 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -112,6 +112,7 @@ jobs:
   # - Logs the running Docker containers.
   # - Logs debug information about what's installed within the WordPress Docker containers.
   # - Install WordPress within the Docker container.
+  # - Install the PCOV code coverage driver.
   # - Run the PHPUnit tests.
   # - Upload the code coverage report to Codecov.io.
   # - Ensures version-controlled files are not modified or deleted.
@@ -136,68 +137,56 @@ jobs:
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
           persist-credentials: false
 
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        background: true
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
-
-      ##
-      # This allows Composer dependencies to be installed using a single step.
-      #
-      # Since the tests are currently run within the Docker containers where the PHP version varies,
-      # the same PHP version needs to be configured for the action runner machine so that the correct
-      # dependency versions are installed and cached.
-      ##
-      - name: Set up PHP
-        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
-        background: true
-        with:
-          php-version: '${{ inputs.php }}'
-          coverage: none
+      - parallel:
+        - name: Set up Node.js
+          uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+          with:
+            node-version-file: '.nvmrc'
+            cache: npm
 
-      - name: Wait for setup steps
-        wait-all:
+        ##
+        # This allows Composer dependencies to be installed using a single step.
+        #
+        # Since the tests are currently run within the Docker containers where the PHP version varies,
+        # the same PHP version needs to be configured for the action runner machine so that the correct
+        # dependency versions are installed and cached.
+        ##
+        - name: Set up PHP
+          uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+          with:
+            php-version: '${{ inputs.php }}'
+            coverage: none
 
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        background: true
-        with:
-          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+      - parallel:
+        # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+        # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
 
-      - name: Install npm dependencies
-        background: true
-        run: npm ci
+        - name: Install npm dependencies
+          run: npm ci
 
-      - name: Wait for install commands
-        wait-all:
+      - parallel:
+        - name: Build WordPress
+          run: npm run build:dev
 
-      - name: Build WordPress
-        run: npm run build:dev
-        background: true
+        - name: Start Docker environment
+          run: npm run env:start
 
-      - name: Start Docker environment
-        background: true
-        run: npm run env:start
+        - name: General debug information
+          run: |
+            npm --version
+            node --version
+            curl --version
+            git --version
+            composer --version
+            locale -a
 
-      - name: General debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-          composer --version
-          locale -a
-
-      - name: Docker debug information
-        run: |
-          docker -v
-
-      - name: Wait for build script & Docker environment
-        wait-all:
+        - name: Docker debug information
+          run: |
+            docker -v
 
       - name: Log running Docker containers
         run: docker ps -a
@@ -212,38 +201,34 @@ jobs:
         env:
           LOCAL_DB_CMD: ${{ env.LOCAL_DB_TYPE == 'mariadb' && contains( fromJSON('["5.5", "10.0", "10.1", "10.2", "10.3"]'), env.LOCAL_DB_VERSION ) && 'mysql' || env.LOCAL_DB_TYPE }}
 
-      - name: Install WordPress
-        background: true
-        run: npm run env:install
-
-      # Installs PCOV as the code coverage driver for the PHPUnit run below.
-      #
-      # The INI directives tune PCOV for WordPress's codebase:
-      # - `pcov.enabled` keeps the Zend hooks active (this is the default, but
-      #   stated explicitly for clarity).
-      # - `pcov.directory` restricts instrumentation to `src/`, so PCOV does not
-      #   record hits for `vendor/`, `tests/`, or WordPress test fixtures that
-      #   PHPUnit would discard at report time anyway.
-      # - `pcov.initial.files` pre-sizes the internal file tracking array for
-      #   the thousands of files under `src/`, avoiding reallocation churn
-      #   during test warmup. The default of 64 is far too low here.
-      - name: Install PCOV coverage driver
-        if: ${{ inputs.coverage-report }}
-        background: true
-        run: |
-          docker compose exec -T -u 0 php sh -c '
-            pecl install --force pcov-1.0.12 &&
-            docker-php-ext-enable pcov &&
-            {
-              echo "pcov.enabled=1"
-              echo "pcov.directory=/var/www/src"
-              echo "pcov.initial.files=10000"
-            } >> /usr/local/etc/php/conf.d/docker-php-ext-pcov.ini &&
-            php -m | grep -i pcov
-          '
+      - parallel:
+        - name: Install WordPress
+          run: npm run env:install
 
-      - name: Wait for installation steps
-        wait-all:
+        # Installs PCOV as the code coverage driver for the PHPUnit run below.
+        #
+        # The INI directives tune PCOV for WordPress's codebase:
+        # - `pcov.enabled` keeps the Zend hooks active (this is the default, but
+        #   stated explicitly for clarity).
+        # - `pcov.directory` restricts instrumentation to `src/`, so PCOV does not
+        #   record hits for `vendor/`, `tests/`, or WordPress test fixtures that
+        #   PHPUnit would discard at report time anyway.
+        # - `pcov.initial.files` pre-sizes the internal file tracking array for
+        #   the thousands of files under `src/`, avoiding reallocation churn
+        #   during test warmup. The default of 64 is far too low here.
+        - name: Install PCOV coverage driver
+          if: ${{ inputs.coverage-report }}
+          run: |
+            docker compose exec -T -u 0 php sh -c '
+              pecl install --force pcov-1.0.12 &&
+              docker-php-ext-enable pcov &&
+              {
+                echo "pcov.enabled=1"
+                echo "pcov.directory=/var/www/src"
+                echo "pcov.initial.files=10000"
+              } >> /usr/local/etc/php/conf.d/docker-php-ext-pcov.ini &&
+              php -m | grep -i pcov
+            '
 
       - name: Run external HTTP tests
         if: ${{ ! inputs.multisite && ! inputs.phpunit-test-groups && ! inputs.coverage-report }}
diff --git a/.github/workflows/reusable-test-core-build-process.yml b/.github/workflows/reusable-test-core-build-process.yml
index d71165de83f2b..f45c7b087b2c6 100644
--- a/.github/workflows/reusable-test-core-build-process.yml
+++ b/.github/workflows/reusable-test-core-build-process.yml
@@ -51,8 +51,12 @@ jobs:
   # Performs the following steps:
   # - Checks out the repository.
   # - Sets up Node.js.
-  # - Logs debug information about the GitHub Action runner.
+  # - Sets up PHP.
+  # - Installs Composer dependencies.
   # - Installs npm dependencies.
+  # - Logs debug information about the GitHub Action runner.
+  # - Runs Emoji build scripts.
+  # - Runs bundled Root Certificate build scripts.
   # - Builds WordPress to run from the desired location (src or build).
   # - Ensures version-controlled files are not modified or deleted.
   # - Creates a ZIP of the built WordPress files (when building to the build directory).
@@ -75,51 +79,55 @@ jobs:
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
           persist-credentials: false
 
-      # This date is used to ensure that the PHPCS cache is cleared at least once every week.
-      # http://man7.org/linux/man-pages/man1/date.1.html
-      - name: "Get last Monday's date"
-        id: get-date
-        if: ${{ inputs.test-certificates }}
-        run: echo "date=$(/bin/date -u --date='last Mon' "+%F")" >> "$GITHUB_OUTPUT"
-
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        if: ${{ inputs.test-certificates }}
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        background: true
-        with:
-          custom-cache-suffix: ${{ steps.get-date.outputs.date }}
-
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        background: true
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
-
-      - name: Wait for Node.js & Composer commands
-        wait-all:
-
-      - name: Log debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-
-      - name: Install npm Dependencies
-        run: npm ci
-
-      - name: Run Emoji precommit task
-        if: ${{ inputs.test-emoji }}
-        run: npm run grunt precommit:emoji
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Ensure certificates files are updated
-        if: ${{ inputs.test-certificates }}
-        run: npm run grunt copy:certificates && npm run grunt build:certificates
+      - parallel:
+        - name: Set up Node.js
+          uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+          with:
+            node-version-file: '.nvmrc'
+            cache: npm
+
+        ##
+        # This allows Composer dependencies to be installed using a single step.
+        #
+        # Since the tests are currently run within the Docker containers where the PHP version varies,
+        # the same PHP version needs to be configured for the action runner machine so that the correct
+        # dependency versions are installed and cached.
+        ##
+        - name: Set up PHP
+          uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+          with:
+            php-version: '8.3'
+            coverage: none
+
+      - parallel:
+          # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+          # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          if: ${{ inputs.test-certificates }}
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+        - name: Install npm Dependencies
+          run: npm ci
+
+        - name: Log debug information
+          run: |
+            npm --version
+            node --version
+            curl --version
+            git --version
+
+      - parallel:
+        - name: Run Emoji precommit task
+          if: ${{ inputs.test-emoji }}
+          run: npm run grunt precommit:emoji
+          env:
+            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+        - name: Ensure certificates files are updated
+          if: ${{ inputs.test-certificates }}
+          run: npm run grunt copy:certificates && npm run grunt build:certificates
 
       - name: Build WordPress to run from ${{ inputs.directory }}
         run: npm run ${{ inputs.directory == 'src' && 'build:dev' || 'build' }}
diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
index d2d2629635538..5d51b5b5012e5 100644
--- a/.github/workflows/reusable-test-local-docker-environment-v1.yml
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -61,9 +61,10 @@ jobs:
   # - Sets up PHP.
   # - Installs Composer dependencies.
   # - Installs npm dependencies
+  # - Builds WordPress to run from `src/`
+  # - Starts the WordPress Docker container.
   # - Logs general debug information about the runner.
   # - Logs Docker debug information (about the Docker installation within the runner).
-  # - Starts the WordPress Docker container.
   # - Logs the running Docker containers.
   # - Logs debug information about what's installed within the WordPress Docker containers.
   # - Install WordPress within the Docker container.
@@ -91,78 +92,68 @@ jobs:
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
           persist-credentials: false
 
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        background: true
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
-
-      ##
-      # This allows Composer dependencies to be installed using a single step.
-      #
-      # Since tests are currently run within the Docker containers where the PHP version varies,
-      # the same PHP version needs to be configured for the action runner machine so that the correct
-      # dependency versions are installed and cached.
-      ##
-      - name: Set up PHP
-        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
-        background: true
-        with:
-          php-version: '${{ inputs.php }}'
-          coverage: none
-
-      - name: Wait for setup commands
-        wait-all:
-
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        background: true
-        with:
-          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
-
-      - name: Install npm dependencies
-        background: true
-        run: npm ci
-
-      - name: Wait for install commands
-        wait-all:
-
-      - name: Build WordPress
-        background: true
-        run: npm run build:dev
-
-      - name: General debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-          composer --version
-          locale -a
-
-      - name: Docker debug information
-        run: |
-          docker -v
-
-      - name: Start Docker environment
-        run: npm run env:start
-
-      - name: Wait for build script & Docker environment
-        wait-all:
-
-      - name: Log running Docker containers
-        run: docker ps -a
-
-      - name: WordPress Docker container debug information
-        run: |
-          docker compose run --rm mysql "${LOCAL_DB_TYPE}" --version
-          docker compose run --rm php php --version
-          docker compose run --rm php php -m
-          docker compose run --rm php php -i
-          docker compose run --rm php locale -a
+      - parallel:
+        - name: Set up Node.js
+          uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+          with:
+            node-version-file: '.nvmrc'
+            cache: npm
+
+        ##
+        # This allows Composer dependencies to be installed using a single step.
+        #
+        # Since tests are currently run within the Docker containers where the PHP version varies,
+        # the same PHP version needs to be configured for the action runner machine so that the correct
+        # dependency versions are installed and cached.
+        ##
+        - name: Set up PHP
+          uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+          with:
+            php-version: '${{ inputs.php }}'
+            coverage: none
+
+      - parallel:
+        # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+        # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+        - name: Install npm dependencies
+          run: npm ci
+
+      - parallel:
+        - name: Build WordPress
+          run: npm run build:dev
+
+        - name: Start Docker environment
+          run: npm run env:start
+
+        - name: General debug information
+          run: |
+            npm --version
+            node --version
+            curl --version
+            git --version
+            composer --version
+            locale -a
+
+        - name: Docker debug information
+          run: |
+            docker -v
+
+      - parallel:
+        - name: Log running Docker containers
+          run: docker ps -a
+
+        - name: WordPress Docker container debug information
+          run: |
+            docker compose run --rm mysql "${LOCAL_DB_TYPE}" --version
+            docker compose run --rm php php --version
+            docker compose run --rm php php -m
+            docker compose run --rm php php -i
+            docker compose run --rm php locale -a
 
       - name: Install WordPress
         run: npm run env:install

From 12b18c6a5787de0fa395cc9cd3c69fa22a4ef568 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:45:37 -0400
Subject: [PATCH 6/9] `setup-php`'s `latest` != Docker container `latest`.

---
 .github/workflows/reusable-test-local-docker-environment-v1.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
index 5d51b5b5012e5..9b65049e5b983 100644
--- a/.github/workflows/reusable-test-local-docker-environment-v1.yml
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -109,7 +109,7 @@ jobs:
         - name: Set up PHP
           uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
           with:
-            php-version: '${{ inputs.php }}'
+            php-version: '${{ inputs.php == 'latest' && '8.3' || inputs.php }}'
             coverage: none
 
       - parallel:

From d4db00107dd3f38be921de71544ee8b2bb9c7c70 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:50:31 -0400
Subject: [PATCH 7/9] `setup-php`'s `latest` != Docker's.

---
 .github/workflows/reusable-phpunit-tests-v3.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index 80f562d2dbea3..df145546998a4 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -154,7 +154,7 @@ jobs:
         - name: Set up PHP
           uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
           with:
-            php-version: '${{ inputs.php }}'
+            php-version: '${{ inputs.php == 'latest' && '8.3' || inputs.php }}'
             coverage: none
 
       - parallel:

From e9abf99d4eb34e9ee5743d0ac9e88a7377c95bc0 Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 21:53:43 -0400
Subject: [PATCH 8/9] Fix syntax error.

---
 .github/workflows/reusable-phpunit-tests-v3.yml                 | 2 +-
 .github/workflows/reusable-test-local-docker-environment-v1.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/reusable-phpunit-tests-v3.yml b/.github/workflows/reusable-phpunit-tests-v3.yml
index df145546998a4..d76eef59a0da2 100644
--- a/.github/workflows/reusable-phpunit-tests-v3.yml
+++ b/.github/workflows/reusable-phpunit-tests-v3.yml
@@ -154,7 +154,7 @@ jobs:
         - name: Set up PHP
           uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
           with:
-            php-version: '${{ inputs.php == 'latest' && '8.3' || inputs.php }}'
+            php-version: ${{ inputs.php == 'latest' && '8.3' || inputs.php }}
             coverage: none
 
       - parallel:
diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
index 9b65049e5b983..7864508ea56f4 100644
--- a/.github/workflows/reusable-test-local-docker-environment-v1.yml
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -109,7 +109,7 @@ jobs:
         - name: Set up PHP
           uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
           with:
-            php-version: '${{ inputs.php == 'latest' && '8.3' || inputs.php }}'
+            php-version: ${{ inputs.php == 'latest' && '8.3' || inputs.php }}
             coverage: none
 
       - parallel:

From edd29991ec2a7c120d3ea18f9a78cf09b35674ac Mon Sep 17 00:00:00 2001
From: Jonathan Desrosiers <359867+desrosj@users.noreply.github.com>
Date: Thu, 25 Jun 2026 22:17:39 -0400
Subject: [PATCH 9/9] Add parallelization to PHPStan workflow.

---
 .../reusable-phpstan-static-analysis-v1.yml   | 52 ++++++++++---------
 1 file changed, 27 insertions(+), 25 deletions(-)

diff --git a/.github/workflows/reusable-phpstan-static-analysis-v1.yml b/.github/workflows/reusable-phpstan-static-analysis-v1.yml
index c73c1e5e692fe..58c66db1b3c97 100644
--- a/.github/workflows/reusable-phpstan-static-analysis-v1.yml
+++ b/.github/workflows/reusable-phpstan-static-analysis-v1.yml
@@ -48,38 +48,40 @@ jobs:
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
           persist-credentials: false
 
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
+      - parallel:
+        - name: Set up Node.js
+          uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+          with:
+            node-version-file: '.nvmrc'
+            cache: npm
 
-      - name: Set up PHP
-        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
-        with:
-          php-version: ${{ inputs.php-version }}
-          coverage: none
-          tools: cs2pr
+        - name: Set up PHP
+          uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
+          with:
+            php-version: ${{ inputs.php-version }}
+            coverage: none
+            tools: cs2pr
 
-      - name: General debug information
-        run: |
-          npm --version
-          node --version
-          composer --version
+      - parallel:
+        # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+        # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+        - name: Install Composer dependencies
+          uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+          with:
+            custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
 
-      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
-      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
-      - name: Install Composer dependencies
-        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
-        with:
-          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+        - name: Install npm dependencies
+          run: npm ci --ignore-scripts
+
+        - name: General debug information
+          run: |
+            npm --version
+            node --version
+            composer --version
 
       - name: Make Composer packages available globally
         run: echo "${PWD}/vendor/bin" >> "$GITHUB_PATH"
 
-      - name: Install npm dependencies
-        run: npm ci --ignore-scripts
-
       - name: Build WordPress
         run: npm run build:dev