Every client plugin package carries dshClient ({platform, inject,
immediately?}) and emits lib/client.js through the shared clientBundle
preset; exports["./client"] points at the bundle. The infrastructure
tier (connection, runtime, ui-theme, i18n, hmr) declares immediately: true
in its manifest — absent means lazy. The bundle purity gate covers all
nine packages: platform modules stay external, INLINE_SAFE wire layers
inline, any other cross-plugin value import is a build error. Migrations
that rule forced: scopeOf became a SessionsService method and
transportError moved into dsh-host-apiproxy's wire layer; the store
engine stays in runtime under a documented temporary exemption
(TODO(webload/store-rehome)).