diff --git a/.github/workflows/check-built-files.yml b/.github/workflows/check-built-files.yml
index 8e4946330a..e1338f8518 100644
--- a/.github/workflows/check-built-files.yml
+++ b/.github/workflows/check-built-files.yml
@@ -1,12 +1,12 @@
-# Checks for uncommitted changes to built files and pushes changes back.
-name: Check built files
+# Checks for uncommitted changes to built files in pull requests.
+name: Check Built Files (PRs)
 
 on:
   # Because all commits happen through SVN and should always be manually reviewed by a committer, this workflow only
   # runs for pull requests.
   #
-  # Other workflows that run on push will detect changes to versioned files and fail.
-  pull_request_target:
+  # Other workflows that run for the push event will detect changes to versioned files and fail.
+  pull_request:
     branches:
       - trunk
       - '6.[8-9]'
@@ -31,7 +31,7 @@ on:
 concurrency:
   # The concurrency group contains the workflow name and the branch name for pull requests
   # or the commit hash for any other events.
-  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request_target' && github.head_ref || github.sha }}
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
   cancel-in-progress: true
 
 # Disable permissions for all available scopes by default.
@@ -39,13 +39,8 @@ concurrency:
 permissions: {}
 
 jobs:
-  update-built-files:
-    name: Update built files
-    permissions:
-      contents: write
-    if: ${{ github.repository == 'WordPress/wordpress-develop' }}
-    # This should always reference a version of the workflow committed through SVN and never a local reference.
-    uses: WordPress/wordpress-develop/.github/workflows/reusable-check-built-files.yml@trunk
-    secrets:
-      GH_APP_ID: ${{ secrets.GH_PR_MANAGEMENT_APP_ID }}
-      GH_APP_PRIVATE_KEY: ${{ secrets.GH_PR_MANAGEMENT_APP_PRIVATE_KEY }}
+  check-for-built-file-changes:
+    name: Check built files
+    # This prevents an unnecessary second run after changes are committed back because Dependabot always rebases and force pushes.
+    if: ${{ github.repository == 'wordpress/wordpress-develop' && ( github.actor != 'dependabot[bot]' || github.event.commits < 2 ) }}
+    uses: ./.github/workflows/reusable-check-built-files.yml
diff --git a/.github/workflows/commit-built-file-changes.yml b/.github/workflows/commit-built-file-changes.yml
new file mode 100644
index 0000000000..bbe4b62d4f
--- /dev/null
+++ b/.github/workflows/commit-built-file-changes.yml
@@ -0,0 +1,126 @@
+# Commits all missed changes to built files back to pull request branches.
+name: Commit Built File Changes (PRs)
+
+on:
+  workflow_run:
+    workflows: [ 'Check Built Files (PRs)' ]
+    types:
+      - completed
+
+# Cancels all previous workflow runs for pull requests that have not completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name for pull requests
+  # or the commit hash for any other events.
+  group: ${{ github.workflow }}-${{ github.event_name == 'workflow_run' && format( '{0}-{1}', github.event.workflow_run.head_branch, github.event.workflow_run.head_repository.name ) || github.sha }}
+
+# Disable permissions for all available scopes by default.
+# Any needed permissions should be configured at the job level.
+permissions: {}
+
+jobs:
+  # Checks a PR for uncommitted changes to built files.
+  #
+  # Performs the following steps:
+  # - Attempts to download the artifact containing the PR diff.
+  # - Checks for the existence of an artifact.
+  # - Unzips the artifact.
+  # - Checks out the repository.
+  # - Applies the patch file.
+  # - Displays the result of git diff.
+  # - Configures the Git author.
+  # - Stages changes.
+  # - Commits changes.
+  # - Pushes changes.
+  update-built-files:
+    name: Check and update built files
+    runs-on: ubuntu-24.04
+    if: ${{ github.repository == 'wordpress/wordpress-develop' }}
+    timeout-minutes: 10
+    permissions:
+      contents: write
+    steps:
+      - name: Download artifact
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          script: |
+            const artifacts = await github.rest.actions.listWorkflowRunArtifacts( {
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               run_id: process.env.RUN_ID,
+            } );
+
+            const matchArtifact = artifacts.data.artifacts.filter( ( artifact ) => {
+              return artifact.name === 'pr-built-file-changes'
+            } )[0];
+
+            if ( ! matchArtifact ) {
+              core.info( 'No artifact found!' );
+              return;
+            }
+
+            const download = await github.rest.actions.downloadArtifact( {
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifact.id,
+               archive_format: 'zip',
+            } );
+
+            const fs = require( 'fs' );
+            fs.writeFileSync( '${{ github.workspace }}/pr-built-file-changes.zip', Buffer.from( download.data ) )
+        env:
+          RUN_ID: ${{ github.event.workflow_run.id }}
+
+      - name: Check for artifact
+        id: artifact-check
+        run: |
+          if [ -f "pr-built-file-changes.zip" ]; then
+            echo "exists=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "exists=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Unzip the artifact containing the PR data
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        run: unzip pr-built-file-changes.zip
+
+      - name: Checkout repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        with:
+          repository: ${{ github.event.workflow_run.repository.full_name }}
+          ref: ${{ github.event.workflow_run.head_branch }}
+          path: 'pr-repo'
+          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
+
+      - name: Apply patch
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: git apply ${{ github.workspace }}/changes.diff
+
+      - name: Display changes to versioned files
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: git diff
+
+      - name: Configure git user name and email
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: |
+          git config user.name "WordPress Build Script Bot[bot]"
+          git config user.email wordpress@users.noreply.github.com
+
+      - name: Stage changes
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: git add .
+
+      - name: Commit changes
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: |
+          git commit -m "Automation: Updating built files with changes. [dependabot skip]"
+
+      - name: Push changes
+        if: ${{ steps.artifact-check.outputs.exists == 'true' }}
+        working-directory: 'pr-repo'
+        run: git push
diff --git a/.github/workflows/reusable-check-built-files.yml b/.github/workflows/reusable-check-built-files.yml
index 72cc138b60..8c54ac3472 100644
--- a/.github/workflows/reusable-check-built-files.yml
+++ b/.github/workflows/reusable-check-built-files.yml
@@ -1,24 +1,20 @@
-name: Lint GitHub Actions workflows
+##
+# A reusable workflow that checks for uncommitted changes to built files in pull requests.
+##
+name: Check Built Files (PRs)
+
 on:
   workflow_call:
-    secrets:
-      GH_APP_ID:
-        description: 'A GitHub App ID.'
-        required: true
-      GH_APP_PRIVATE_KEY:
-        description: 'A GitHub App private key.'
-        required: true
 
 permissions: {}
 
 jobs:
   # Checks a PR for uncommitted changes to built files.
   #
-  # This job uses a GitHub App instead of $GITHUB_TOKEN because Dependabot pull requests are only granted
-  # read-only access.
+  # When changes are detected, the patch is stored as an artifact for processing by the Commit Built File Changes
+  # workflow.
   #
   # Performs the following steps:
-  # - Generates a token for authenticating with the GitHub App.
   # - Checks out the repository.
   # - Sets up Node.js.
   # - Configures caching for Composer.
@@ -31,62 +27,17 @@ jobs:
   # - Builds WordPress.
   # - Checks for changes to versioned files.
   # - Displays the result of git diff for debugging purposes.
-  # - Configures the Git author.
-  # - Stages changes.
-  # - Commits changes.
-  # - Pushes changes.
+  # - Saves the diff to a patch file.
+  # - Uploads the patch file as an artifact.
   update-built-files:
     name: Check and update built files
     runs-on: ubuntu-24.04
-    # This prevents an unnecessary second run after changes are committed back because Dependabot always rebases
-    # updates and force pushes.
-    if: ${{ github.actor != 'dependabot[bot]' || github.event.commits < 2 }}
     timeout-minutes: 10
-    permissions:
-      contents: write
     steps:
-      - name: Generate Installation Token
-        id: generate_token
-        env:
-          GH_APP_ID: ${{ secrets.GH_APP_ID }}
-          GH_APP_PRIVATE_KEY: ${{ secrets.GH_APP_PRIVATE_KEY }}
-        run: |
-          echo "$GH_APP_PRIVATE_KEY" > private-key.pem
-
-          # Generate JWT
-          JWT=$(python3 - <<EOF
-          import jwt, time
-          private_key = open("private-key.pem", "r").read()
-          payload = {
-              "iat": int(time.time()),
-              "exp": int(time.time()) + 600,  # 10-minute expiration
-              "iss": $GH_APP_ID
-          }
-          print(jwt.encode(payload, private_key, algorithm="RS256"))
-          EOF
-          )
-
-          # Get Installation ID
-          INSTALLATION_ID=$(curl -s -X GET -H "Authorization: Bearer $JWT" \
-            -H "Accept: application/vnd.github.v3+json" \
-            https://api.github.com/app/installations | jq -r '.[0].id')
-
-          # Request Installation Access Token
-          ACCESS_TOKEN=$(curl -s -X POST -H "Authorization: Bearer $JWT" \
-            -H "Accept: application/vnd.github.v3+json" \
-            "https://api.github.com/app/installations/$INSTALLATION_ID/access_tokens" | jq -r '.token')
-
-          echo "ACCESS_TOKEN=$ACCESS_TOKEN" >> "$GITHUB_ENV"
-
-          rm -f private-key.pem
-
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          repository: ${{ github.event.pull_request.head.repo.full_name }}
-          ref: ${{ github.event.pull_request.head.ref }}
           show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
-          token: ${{ env.ACCESS_TOKEN }}
 
       - name: Set up Node.js
         uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
@@ -144,21 +95,14 @@ jobs:
         if: ${{ steps.built-file-check.outputs.uncommitted_changes == 'true' }}
         run: git diff
 
-      - name: Configure git user name and email
+      - name: Save diff to a file
         if: ${{ steps.built-file-check.outputs.uncommitted_changes == 'true' }}
-        run: |
-          git config user.name "wordpress-develop-pr-bot[bot]"
-          git config user.email ${{ secrets.GH_APP_ID }}+wordpress-develop-pr-bot[bot]@users.noreply.github.com
+        run: git diff > ./changes.diff
 
-      - name: Stage changes
+      # Uploads the diff file as an artifact.
+      - name: Upload diff file as artifact
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         if: ${{ steps.built-file-check.outputs.uncommitted_changes == 'true' }}
-        run: git add .
-
-      - name: Commit changes
-        if: ${{ steps.built-file-check.outputs.uncommitted_changes == 'true' }}
-        run: |
-          git commit -m "Automation: Updating built files with changes. [dependabot skip]"
-
-      - name: Push changes
-        if: ${{ steps.built-file-check.outputs.uncommitted_changes == 'true' }}
-        run: git push
+        with:
+          name: pr-built-file-changes
+          path: changes.diff