Migrate release uploads to Apps CDN

[sejas]

Related issues

• Fixes STU-452

Proposed Changes

• Migrate Fastline release uploads to Apps CDN.
• Upgrade the wpmreleasetoolkit gem to version 13.

Testing Instructions

Make sure you have all the build files in the out folder. You can download them from buildkite.

out
├── make
│   └── squirrel.windows
│       └── x64
│           ├── RELEASES
│           ├── studio-setup.exe
│           └── studio-update.nupkg
├── Studio-appx-unsigned
│   └── studio-win32-v1.5.6-unsigned.appx
├── Studio-darwin-arm64
│   └── Studio.app.zip
├── Studio-darwin-arm64.dmg
├── Studio-darwin-x64
│   └── Studio.app.zip
└── Studio-darwin-x64.dmg

1. Test dev build distribution (dry run):

DRY_RUN=true BUILDKITE_BUILD_NUMBER=9999 bundle exec fastlane distribute_dev_build

2. Check the file_paths point to existing files.

3. Upload files to Apps CDN
   You can grab the WPCOM_API_TOKEN from the secret store.

WPCOM_API_TOKEN=12546 BUILDKITE_BUILD_NUMBER=1338 bundle exec fastlane distribute_dev_build

4. Check the files exist on:

https://appscdn.wordpress.com/products/wordpress-com-studio/

5. Confirm the https://appscdn.wordpress.com/builds/wordpress-com-studio/releases.json include the correct versions.

6. To see the valid parameters that upload_build_to_apps_cdn accepts, you can execute:

bundle exec fastlane action upload_build_to_apps_cdn

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[Copilot]

Pull Request Overview

Purpose: Migrate release uploads to Apps CDN by updating CDN URLs and related tooling.

• Update CDN URLs in the release manifest generation script.
• Update documentation to reference the correct manifest script filename.
• Upgrade the fastlane-plugin-wpmreleasetoolkit gem to version 13.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
scripts/generate-releases-manifest.mjs	Updated CDN URLs to point to Apps CDN.
docs/versioning-and-updates.md	Adjusted script filename reference in documentation.
Gemfile	Upgraded fastlane-plugin-wpmreleasetoolkit to v13.

[sejas]

We shouldn't merge this PR until STU-707 is solved.

[github-actions]

📊 Performance Test Results

Comparing 5f78b6a vs trunk

site-editor

Metric	trunk	5f78b6a	Diff	Change
load	11455.50 ms	9918.00 ms	-1537.50 ms	🟢 -13.4%

site-startup

Metric	trunk	5f78b6a	Diff	Change
siteCreation	12043.00 ms	11981.00 ms	-62.00 ms	🟢 -0.5%
siteStartup	3981.00 ms	3981.00 ms	0.00 ms	⚪ 0.0%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change