chore: migrate deployment from Vercel to Cloudflare Workers

[CryptoFewka]

Summary

• Adds wrangler.toml to configure a Cloudflare Workers static assets deployment (name: docs, output: .vitepress/dist)
• Removes vercel.json — no longer needed
• Removes the push: branches trigger from build.yml — Cloudflare Workers Builds now owns all deployments on main

What's needed before merging

The following manual steps must be completed in the Cloudflare dashboard before this is live:

1. Connect the repo — Workers & Pages → Create → Connect to Git → select this repo
   • Production branch: main
   • Build command: yarn install && make build
   • Build output directory: .vitepress/dist
2. Add custom domain — after first successful build, go to the docs Worker → Settings → Domains & Routes → Add Custom Domain → docs.getoptimum.xyz
3. Update DNS — remove/update the Vercel DNS record for docs.getoptimum.xyz only after confirming the Worker serves the site correctly

PR previews

Once connected, Cloudflare will automatically deploy a preview worker for each PR and post the preview URL as a comment — no GitHub secrets or deploy workflows required.

Test plan

• Merge to main triggers a Cloudflare build and deployment
• https://docs.getoptimum.xyz loads correctly after DNS cutover
• Opening a PR causes Cloudflare to post a preview URL comment
• build.yml still runs on PRs for CI validation

Summary by CodeRabbit

• Chores
  • Updated build workflow configuration to trigger only on pull requests and merge group events, removing automatic triggers for direct pushes to main and release branches.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
docs	Error		Apr 21, 2026 7:17pm

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository: getoptimum/coderabbit/.coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: ab2c8158-f3f9-4a62-bcf4-f04e67314767

📥 Commits

Reviewing files that changed from the base of the PR and between 2807665 and 74597a0.

⛔ Files ignored due to path filters (2)

• vercel.json is excluded by none and included by none
• wrangler.toml is excluded by none and included by none

📒 Files selected for processing (1)

• .github/workflows/build.yml

💤 Files with no reviewable changes (1)

• .github/workflows/build.yml

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📝 Walkthrough

Walkthrough

This change removes the push event trigger from the Build Site GitHub Actions workflow for the main and release/** branches, eliminating four lines of configuration. The workflow now activates exclusively on pull_request and merge_group events, preventing automatic builds from direct commits to these branches while maintaining CI/CD execution for pull requests and merge queue operations.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 9 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title does not include the required domain/package identifier in parentheses as specified by the format requirement.	Update the title to follow the format: chore(github): migrate deployment from Vercel to Cloudflare Workers or similar, including the domain/package in parentheses.

✅ Passed checks (9 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Go Build And Test Rationale	✅ Passed	Repository is a Node.js/VitePress documentation site without Go code; Go build and test rationale check is not applicable.
Concurrency Safety	✅ Passed	Pull request modifies only VitePress documentation configuration files with no concurrent code patterns or shared state concerns present.
Public Api Changes	✅ Passed	VitePress documentation site with no public API exports. Package.json lacks main, exports, and types fields. PR changes are infrastructure-related only: GitHub Actions workflows, Vercel removal, and Cloudflare Workers configuration. No public APIs to change.
Security Considerations	✅ Passed	The pull request presents no security vulnerabilities; wrangler.toml contains safe configuration, build.yml uses pinned actions with minimal permissions, and the Makefile invokes yarn scripts safely.
Rust Best Practices	✅ Passed	Custom Rust best practices check is not applicable; PR contains only configuration files (YAML, TOML) with zero Rust source code.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch migrate-to-cloudflare-workers

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	docs	0c2ba6b	Commit Preview URL Branch Preview URL	Apr 21 2026, 07:18 PM