The session's expected hardware set (issue #154): the stageboxes, soundcards, and
control surfaces present when the show was saved. On restore the server diffs this against
what is actually present and TELLS the operator what is missing (a boot log line + a
dismissible banner) — "usual stuff in mixers". Restore still proceeds; the #168 deferral
handles the absent links. Optional + additive (like SafetySnapshot): a session
saved before this field reads back with no manifest, so the schema version is unchanged.
The session's expected hardware set (issue #154): the stageboxes, soundcards, and control surfaces present when the show was saved. On restore the server diffs this against what is actually present and TELLS the operator what is missing (a boot log line + a dismissible banner) — "usual stuff in mixers". Restore still proceeds; the #168 deferral handles the absent links. Optional + additive (like SafetySnapshot): a session saved before this field reads back with no manifest, so the schema version is unchanged.