Hooks-barrel utilities are generated, not supplemented

The @mantine/hooks barrel exports ~17 non-hook plain functions alongside its use* hooks (randomId, mergeRefs, getHotkeyHandler, the *Mask family, read*StorageValue, clamp, range, upperFirst, …). These carry no docgen entry, so ADR 0002 ("backfill non-docgen surface via hand-written supplements") appears to apply. It does not.

Decision. Wrap these utilities by widening the generator's barrel enumeration, not by hand-writing them into a supplement. The generator already produces the mantine.hooks namespace by enumerating the @mantine/hooks barrel and filtering to use*, so it is not a docgen-driven namespace. These utilities are present and enumerable in the barrel we already crawl; only our own use* predicate omits them. So the consistent fix is to relax the filter to everything-minus-excludes and reuse the existing emit-hook-def (a raw-passthrough alias, identical in shape), routing non-use* names to a util-docstring/util-docs.edn pair for their docs.

This draws the boundary ADR 0002 left implicit:

• docgen-omitted surface (providers, Box, compound parts) → supplement.
• barrel-enumerable, non-docgen surface (the hooks-barrel utilities) → widen the generator.

Considered and rejected

• Backfill via a codegen/supplements/hooks.cljc (the ADR 0002 path). Rejected: it would hand-write, as literal source text, def-aliases for names we can read straight off the barrel. That is the "hand-maintained crawler-substitute" ADR 0002's own rejected alternative warned against. It would also require adding a supplement-hoisting path to emit-hooks-ns, which today has none. Enumeration is the cheaper, drift-safe mechanism.

Consequences

• Scope is everything-minus-excludes. All documented utilities are wrapped. The sole exclude is normalizeRadialValue: it is undocumented, so the same "we expose what the docs describe" rule that governs the whole pipeline excludes it, not a value judgment.
• Docstrings are hand-authored in codegen/input/util-docs.edn ({:desc, :page} per entry). Upstream has no machine-readable source: the functions-reference page is hand-written MDX and the functions carry no JSDoc. The doc URL is derived from the JS name (lowercase, separators stripped: .../guides/functions-reference/#randomid, .../hooks/use-hotkeys/#gethotkeyhandler), so only the description and the :page are written by hand.
• A barrel utility included by the filter but missing a util-docs.edn entry fails the build. This is the same enumerate-and-guard discipline as the collision and drift checks, and it keeps everything-minus-excludes safe across version bumps.
• Raw passthrough, both directions, consistent with the sibling hooks (ADR 0002). The utilities pair with hooks that take the same options objects, so converting a utility's input while its sibling hook stays raw would be a partial veneer at adjacent call sites.