@mercury-fw/channel-types

The contract a Mercury channel implements: ChannelPlugin, CHANNEL_API_VERSION, the provider and sink a channel drives a turn through, the Principal it builds for whoever sent the message (only the core reads it, tools never see it), the confirmation helpers and read getters the core injects (both take the caller's Principal, so a token resolves only for whoever staged it and a read returns only the caller's data), and the auth-provider contract (AuthPlugin, AUTH_API_VERSION, Authenticate): an app declares one provider as auth, and a channel whose callers bring their own credentials gets it as ctx.authenticate. Channel authors get it through @mercury-fw/kit.

MIT