crates/odin-core/src/idunn.rs (plan_keepalive: observe, alarm, deploy or
restart from IdunnDaemonHealthRecord) had no caller: odin-daemon does not
depend on odin-core, and the deployed recipe builds only odin-daemon.
Idunn owns deployment and daemon survival; nothing in Idunn reads these
records (its own live in cultnet-rs).
Also removes from documents.rs the idunn.* and bifrost release-authority
schema constants and records, their OdinDocuments registrations, the
cultnet re-exports of Idunn health types, and the tests that only
exercised them. The muninn.* copies stay. cultnet-rs and rmp-serde drop
out of odin-core's manifest and lockfile entry (no remaining user).
Muninn pins odin-core at 3e96c6c and is unaffected until its next bump,
which must drop IdunnDaemonHealthRecord.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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