rtk + Headroom: Trim at the Shell, Compress on the Wire

Two token trimmers that stack: rtk is a Rust CLI proxy that filters dev-command output at the shell (60-90% off ls, grep, git, tests), and Headroom is a local compression proxy that compresses tool output, logs, files and RAG chunks on the wire, with CacheAligner to protect your prompt cache. Real numbers from two days of use.