Show HN: Shared AI chat experience

Hey HN,

I'm Akshay, and I love to experiment with real-time apps.

SparkPad is an experimental GenAI chat app. The twist is real-time collaboration: think multiplayer, a shared chatbook. Messages and streaming AI responses are live for everyone in the space. The prompt editor is also shared and synced.

I use it to create different spaces with custom prompts suited to a task, workflow, or project, keeping my chats scoped. It can also be shared with a team for a common prompt setup.

Tech details: Built with Yjs. Client-side AI API calls are routed through a designated host's API key. The only AI model for now is Gemini (because it's fast)