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>
pim
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