Migrates the chrome-devtools-patches project from Cloudflare Pages to Cloudflare Workers + Assets.

Changes

• New wrangler.jsonc: Assets-only Worker config with preview_urls: true and workers_dev: true
• Makefile: Production deploy uses wrangler deploy; new publish-preview target uses wrangler versions upload (uploads without activating in production)
• package.json: New deploy:preview script for PR preview deployments
• deploy-previews.yml: Uses deploy:preview instead of deploy for PR previews; URL extraction updated from Pages format (Take a peek over at) to Workers format (Version Preview URL:)
• Inspector proxy origin allowlists: Added workers.dev regex patterns to both InspectorProxyWorker.ts and inspector-proxy-controller.ts, while retaining the legacy pages.dev patterns for backward compatibility
• README.md: Updated deployment documentation

Testing

This can be tested without changing the devtools.devprod.cloudflare.dev custom domain:

1. Preview deploy (via this PR)

The preview:chrome-devtools-patches label has been added to trigger the deploy-previews workflow. Once complete, a comment will appear with the Version Preview URL. Verify:

• Navigate to <preview-url>/js_app in a browser — the DevTools frontend should load

2. End-to-end WebSocket test

To verify the new workers.dev origin is accepted by the inspector proxy:

1. Run wrangler dev on any Worker locally
2. Press d to open DevTools (opens devtools.devprod.cloudflare.dev/js_app?ws=...)
3. In the browser address bar, replace just the hostname with the preview URL (or the workers.dev URL after production deploy), keeping all query params
4. Verify the WebSocket connection succeeds — Console, Sources, and Network tabs should all work

3. Production deploy

After merge, the changesets workflow will run wrangler deploy, making the Worker live at:

https://cloudflare-devtools.<account-subdomain>.workers.dev

Verify the same way as step 1 and 2 above using the workers.dev URL.

Post-merge steps

• Re-point custom domain devtools.devprod.cloudflare.dev from the Pages project to the new Worker in the Cloudflare dashboard
• Verify production deploy works via the changesets workflow

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: this is a deployment infrastructure change; the DevTools frontend build itself is unchanged. Manual testing steps are described above.
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: internal infrastructure change only