Each package ships its zh/en dictionaries as satisfies-typed pairs (zh is
the key-set source of truth; en is checked complete against it), merges its
namespace into LocaleNamespaceMap, and declares locale: NS at register —
components read the framework-injected typed t seat instead of a
hand-carried inject member. Overlapping verbatim words (retry, submit,
submitting) drop out of package dictionaries in favor of the shared common
vocabulary; the question composer stores validation feedback as dictionary
keys so shown feedback follows a locale switch.
Registrations declare a dictionary namespace (locale: NS) and the renderer
synthesizes a typed t prop for the entry's component from the installed
LocaleFace; the seat binding is re-derived per locale revision, so a language
switch hands out fresh t references and memoized consumers re-render through
ordinary shallow comparison. LocaleNamespaceMap is the declare-merge table
(namespace -> dictionary key union); TranslateNS<'ns'> is the
namespace-addressed translate type (namespace keys plus the shared common
vocabulary), carried by the t seat and by the locale service's typed bind.
LocaleService implements the face (lookup ns -> common -> zh -> key,
revision-carrying snapshots with subscriber isolation) and installs it
through the boot-once slots.installLocale seam, mirroring the renderer
install. The typed register(ns, {zh, en}) overload checks each dictionary
against the namespace's key union and requires every shipped locale, so a
missing or extra key and an unbalanced translation are compile errors.
Dictionary registration bumps the face revision without emitting
locale/change — the event now means exactly 'the active locale switched',
so registration-heavy boot cannot storm event listeners.
The seven behavior-pinning snapshots (workspace-flow, slash-flow,
todo-display, session-title, session-actions, terminal-card,
code-mode-fixture) asserted per-package behavior through the whole
built app: every assertion now lives in the owning package's suite at
equal strength (SlotTestRuntime benches assemble the same plugin apply
over the production slot machinery), while the assembled layer kept
re-failing on unrelated churn at 10s-timeout debugging cost.
What only this lane can prove is the artifact plane: lib/client.js
bundles loading through the ModuleLoader path, staged boot activation
across the inject layers, per-plugin CSS injection, and a journey
reaching chat content over the fixture transport. built-boot.snapshot.ts
pins exactly that, and nothing else — behavior assertions belong to the
package suites.
