Meshnet open-sources VM-backed localhost harness

This is a strong systems demo, not a finished product: it makes remote compute disappear behind a familiar local-dev mental model. The interesting part is less “sandboxed chat” and more “preserve localhost ergonomics while isolating every session.”

• –Per-chat microVMs are a clean way to isolate state, cookies, and filesystem side effects between conversations
• –Keeping everything on `localhost:3000` removes the URL-sprawl problem that usually makes sandboxed dev feel clunky
• –The Electron + Vercel Sandbox stack is practical for prototyping, but it also means latency, cost, and backend dependency will decide whether this scales
• –Open-sourcing the prompt is the real multiplier here: it turns the repo from a one-off demo into something others can remix into agent workflows
• –This lands squarely in AI coding infrastructure, especially for agentic dev environments and local-first remote execution patterns