ci: update Discord link to builders server

[jonchurch]

🧭 Context

The workflow for welcoming a contributor via comment on PR merge points to the chat.npmx.dev discord and mentions claiming a contributor role via wamellow. Wamellow is setup to handle role assignment on the build.npmx.dev discord not chat.

e.g. #1494 (comment)

📚 Description

Update the link to point the build.npmx.dev discord

[vercel]

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

Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Apr 10, 2026 6:59pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored	Preview	Apr 10, 2026 6:59pm
npmx-lunaria	Ignored		Apr 10, 2026 6:59pm

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 8e5cbad1-867a-4d11-b6c0-2ab8b72245cc

📥 Commits

Reviewing files that changed from the base of the PR and between 6c6e274 and 408c917.

📒 Files selected for processing (1)

• .github/workflows/welcome-close.yml

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📝 Walkthrough

Walkthrough

The pull request modifies the .github/workflows/welcome-close.yml GitHub Actions workflow file. It updates the Discord URL referenced in the welcome comment message generated by the workflow, replacing https://chat.npmx.dev with https://build.npmx.dev. The change affects a single line with no modifications to workflow logic, conditions, or API calls.

Possibly related PRs

• feat: chat.npmx.dev + build.npmx.dev #1774: Performs the same code-level replacement of chat.npmx.dev with build.npmx.dev (in a Vercel redirect configuration rather than a workflow message)
• ci: add welcome workflow #1086: Modifies the welcome workflow's generated PR comment; this PR updates the Discord URL within that message, whilst the related PR implements the workflow that generates and posts that message

Suggested labels

chore

Suggested reviewers

• whitep4nth3r

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The pull request description clearly explains the context and rationale for updating the Discord link from chat.npmx.dev to build.npmx.dev, directly relating to the changeset.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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[serhalp]

Thank you!