Della97/Epico — reverse-engineered prompt

Build me a Rust project called Epico. I want it to be a simple stream processing runtime that runs on one machine without Kafka, Redis, Kubernetes, or any external broker. A user should define a pipeline in one YAML file, write each processing stage as a small Rust file, and run everything with an epico command.

Each stage should compile to a WebAssembly component and the main runtime should load stages dynamically, pass typed events between them with ZeroMQ, and scale stage workers up or down based on queue pressure. Please include a small SDK macro so writing a stage feels easy, plus a CLI with build, run, validate, clean, and bootstrap commands.

Add a working temperature sensor example with normalize and detect stages, a setup script, useful logs, and a summary JSON with latency and throughput when the run stops. Keep it research friendly and lightweight. Look up current Rust and WASI component docs online if you need to.