[platforms] add multi-tenant blog example with Neon

[rishi-raj-jain]

Description

Adds solutions/platforms-blog-neon, a Platforms-style multi-tenant blog on Neon Postgres, Auth, Data API, and Object Storage.

A signed-in user creates a site and gets a subdomain (acme.yourapp.com) that serves a public blog. The dashboard talks to the Data API with a Neon Auth JWT and RLS, public tenant pages use the serverless driver and published rows only. Cover images are stored and fetch over presigned URLs from Neon Object Storage.

Includes db/schema.sql, demo seed data, and clone/deploy docs.

Demo URL

https://platforms-blog-neon.vercel.app

Type of Change

• New Example
• Example updates (Bug fixes, new features, etc.)
• Other (changes to the codebase, but not to examples)

New Example Checklist

• 🛫 npm run new-example was used to create the example
• 📚 The template wasn't used but I carefuly read the Adding a new example steps and implemented them in the example
• 📱 Is it responsive? Are mobile and tablets considered?

[vercel]

@rishi-raj-jain is attempting to deploy a commit to the Vercel Labs Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

Deployment failed for project mintlify-docs-rewrite with the following error:

The `vercel.ts` schema validation failed with the following message: `rewrites[0]` missing required property `destination`

Learn More: https://vercel.com/docs/concepts/projects/project-configuration

[vercel]

Deployment failed for project mintlify-docs-rewrite with the following error:

The `vercel.ts` schema validation failed with the following message: `rewrites[0]` missing required property `destination`

Learn More: https://vercel.com/docs/concepts/projects/project-configuration

[vercel]

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

Project	Deployment	Actions	Updated (UTC)
mintlify-docs-rewrite	Error		Aug 18, 2026 11:50am

[rishi-raj-jain]

Deployment failed for project mintlify-docs-rewrite with the following error:

The `vercel.ts` schema validation failed with the following message: `rewrites[0]` missing required property `destination`

Learn More: https://vercel.com/docs/concepts/projects/project-configuration

But this is not related to my PR 😓

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​aws4fetch@​1.0.20
	npm/​react-markdown@​10.1.0
	npm/​@​neondatabase/​serverless@​1.1.0
	npm/​@​tailwindcss/​typography@​0.5.20
	npm/​jose@​6.2.9
	npm/​@​neondatabase/​neon-js@​0.7.0-beta

View full report

[vercel]

Deployment failed for project single-spa-root-microfrontend with the following error:

Creating the Deployment Timed Out.

[vercel]

Deployment failed for project microfrontends-docs with the following error:

Creating the Deployment Timed Out.

[vercel]

Deployment failed for project single-spa-content-microfrontend with the following error:

Creating the Deployment Timed Out.

[vercel]

Deployment failed for project microfrontends-marketing with the following error:

Creating the Deployment Timed Out.

[rishi-raj-jain]

All of the above failures have nothing to do with my PR.