foundation_toolings

Development tooling server: reverse proxy, file watcher, hot reload — built on valtron iterators and native APIs with zero async runtime dependencies.

Architecture

• Valtron TaskIterators for file watching, building, and binary management
• foundation_http (HttpServer, HttpApp, Serve) for HTTP proxy and SSE
• TunnelProxy for raw TCP tunneling on the same port
• BackgroundJobRegistry for blocking build operations (cargo, wasm-pack)
• QueueReadiness for zero-CPU-spinning event-driven task parking

Zero async runtime deps

No tokio, no axum, no hyper, no tower, no async-trait. All I/O uses std::io::{Read, Write} and std::net, coordinated by valtron's synchronous executor.