Documents the three non-obvious dependency rules that a source scan
alone mis-reads: primitives publishes shiki/katex/mdast/micromark/
anser/clsx/diff/simple-icons as bare imports the plugin must declare;
dsh-client-store + dsh-util-code-language (and zustand/immer behind
them) are reached only through the primitives dist; and tailwindcss
is deliberately not a direct dependency.