Auth.js integration

[isvictorious]

Describe your changes

Adds a new integration guide for authenticating an application against Tiger Cloud or self-hosted TimescaleDB using Auth.js with the official PostgreSQL adapter. Covers the required schema (users, accounts, sessions, verification_token), installing @auth/pg-adapter pg, setting connection env vars, the auth.ts configuration with a pg Pool, verification, and troubleshooting. Adds the Auth.js card logo and a sidebar entry under Code & libraries.

Drafted from the Auth.js PostgreSQL adapter docs. Linear: EDU-582.

Needs review (AI-drafted, not hand-verified):

• The AUTH_SECRET / provider note comes from the base Auth.js install docs, not the adapter page itself.
• Confirm the card logo renders correctly on the integration overview card.

Affected pages

• /integrate/code/auth-js

Related Issues

If there is a related issue, please add it below (just put the number after the # below, and GitHub will automatically create a link):

Issue: #number

Checklist before requesting a review

• - This is ready for review. If not, raise as a draft PR
• - I have reviewed my changes.
• - I have confirmed the content is technically accurate.
• - I have tested any code that is added or updated on the latest available version.
• - I have confirmed the content is free of typos or grammar errors.
• - I have verified all images and videos are clear and match production (or dev for unreleased features).
• - This references a feature that is public. If not, add a note and we can schedule the merge for after the feature release.

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Project	Deployment	Actions	Updated (UTC)
tiger-data-docs	Ready	Preview, Comment	Jun 30, 2026 12:30am

[github-actions]

⚠️ Checklist Incomplete

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