Builder (cli.For[C]): Root/Dir/Cmd/SlotDir/Slot construct the tree
without repeating the [C] type parameter at every node; returns plain
*Node[C] so it interoperates with struct-literal construction.
App[C]: collapses the per-binary main.go — standard flags
(-color/-json/-version, -server when configured), mode-aware color
defaults, version banner, client connect, and the one-shot-vs-shell
split — into one Main(). Transport-agnostic via a Connect callback, so
it never assumes gRPC.
Makefile: `make check` = fixstyle vet lint test (the pre-commit gate),
plus build and a linux+openbsd cross target. The example now dogfoods
both Builder and App. Tests cover the builder tree and App's one-shot
dispatch / -version / nil-Connect paths.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Reusable, generics-based CLI extracted from vpp-evpn's cmd/evpnc:
a declarative command tree (Node[C]) from which dispatch, '?'-help and
TAB-completion are derived, an interactive Shell[C], dynamic slot
resolvers (context-dependent via captured args), text-or-JSON output
(Emit), and color helpers (Paint/Label/KV). Builds on Linux and OpenBSD
(readline termios override). Includes a self-contained example and a
design proposal under docs/.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Pim van Pelt