Collapse remote input to `tvctl remote key` so single-key and multi-key usage share one public command while keeping the paced daemon path underneath.
Finish the Milestone 4 CLI surface with config management, daemon install and uninstall helpers, config reload handling, and final polish for secret redaction and running-socket tracking.
Set up the Rust crate, baseline module layout, and project docs so the repository matches the design bundle and builds cleanly as a starting point.