Launch HN: SIM Studio (YC X25) – Figma-Like Canvas for Agent Workflows

A few points on this:
- Super intuitive visual canvas where you can see exactly how your agents interact
- Seamlessly works with the tools you already use and love (supabase, pinecone, mem0, exa)
- Handles complexities like branching, loops, and concurrency by default
- Built-in debugging that actually makes sense (with trace spans and logs)
- Deploy however you want - as an api or chat interface, webhook, schedule
- ACTUALLY open source (apache 2.0)
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