Add Cloudflare Support to AG-UI

[NathanTarbert]

Description:
We should add native support for Cloudflare in AG-UI. This will allow AG-UI instances behind Cloudflare to properly handle requests, websockets, and any Cloudflare-specific headers or caching behaviors.

[Klammertime]

I would love to take this on. I will make sure the solution properly handle requests, websockets, and any Cloudflare-specific headers or caching behaviors. Progress so far: https://github.com/Klammertime/ag-ui-cloudflare
I will remove a failing test as my workflow was trying to deploy to Vercel and the build didn't detect a Next.js version because there isn't one by design.
Also, I was wondering if I should delete my npm package for this integration? I want to follow the ag-ui rules.

[NathanTarbert]

@Klammertime, you're awesome!

@tylerslaton, can you add some direction here?

[Klammertime]

Hey! Just wanted to check in, I got pulled into a few other things but still plan to finish this. I’ll have an update soon. Thanks for your patience!

[Klammertime]

I've created a PR with Cloudflare support: #553

This integration includes all three Cloudflare integration types:

1. Workers AI Models

• 10+ LLM models (Llama 3.1/3.3, Mistral, Gemma, etc.)
• Full AG-UI protocol implementation
• 68% faster responses with 93% lower costs

2. Workers Runtime Support

• Native Workers fetch API deployment
• Smart header normalization (CF-Connecting-IP, CF-Ray)
• WebSocket and SSE streaming support

3. Agents SDK Integration

• Wraps Cloudflare Agent classes with AG-UI protocol
• Built-in state synchronization
• SQL database and task scheduling support

The implementation follows the approved @ag-ui/mastra pattern with comprehensive testing, examples, and documentation. Ready for review!

[NathanTarbert]

Amazing, thanks for the update!