[lanej]

Add recomp add epf to validate a completion generator, save its command locally, and load the completion in the current Zsh session. Existing registrations and built-in generators take priority; a new tool is probed with completions zsh, then completion zsh. Explicit overrides such as recomp add cargo rustup completions zsh cargo are reused by future make and recomp runs.

Registry updates preserve comments and unrelated entries, replace duplicate registrations, and reject invalid output without changing the working completion. Hand-written completion files remain preserved. The install guide now leads with the helper and keeps manual registry editing in a disclosure.

Open a new Zsh after updating to load the new helper.