Decompose the monolithic `cli` package into three layers so multiple
products can be assembled from a shared base:
- bailian-cli-runtime: framework infra (createCli, registry, args,
output, pipeline, utils) — product-agnostic
- bailian-cli-commands: command library, grouped (base/knowledge/text/
media/memory/misc) so each product picks the sets it needs
- packages/cli (bl): full command set; packages/rag (rag): base +
knowledge only
Product identity (binName / clientName / npmPackage) is injected at the
createCli boundary and required there, with no per-consumer defaults.
若麒