Extract the awaitable useMutation into @probo/relay as a
createUseMutation factory that delegates feedback to an injected
MutationNotifier, keeping the package free of UI and i18n
dependencies. compliance-portal binds it to its Base UI toast +
i18next + formatError stack and imports it by explicit path
(#/lib/relay/useMutation), dropping the lone intra-app barrel; a
compliance-portal-scoped no-restricted-imports rule forbids
react-relay's useMutation.
Bring packages/relay and packages/routes into the shared ESLint
scope and fix the violations that surfaced, and deprecate the
legacy withQueryRef / loaderFromQueryLoader helpers. Document the
shared-hook pattern and the "index.ts for package entrypoints only"
rule in the relay, hooks, and app-arborescence guides.
Signed-off-by: Émile Ré <emile@probo.com>
ff966b462e