forked from unom/punktfunk
Move the host-lifetime InjectorService (struct + impl + INJECTOR_REOPEN_BACKOFF +
injector_service_thread) and the pre-injection coalesce pass into inject/service.rs,
alongside the coalesce unit tests. libei_ei_source stays in the facade as an open()
helper. Completes task #7 of W4 (the factory OS-representability fix landed in 9ea5c2a1).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>