The library already ships as a single .so with a tiered header surface
(liblogosdelivery.h = stable Messaging/Reliable-Channels, liblogosdelivery_kernel.h
= advanced Kernel). Per that tiering, the reliable-channel ops belong on the
stable surface, so declare channel_create / channel_send / channel_close in
liblogosdelivery.h and document the channel lifecycle events delivered through
the event callback.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>