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v2.2 adds four optional manifests before normal packets. They are ordinary OBS packets over reserved @m.* subjects. The packet grammar does not change. Order: PROFILE => AUDIENCE => ONTOLOGY => BUNDLE.

PROFILE

Declare tokenizer, charset, density, and capabilities.

AUDIENCE

Declare intended receiver.

ONTOLOGY

Declare aliases before use.
After this, PLT and COH are valid in subsequent packets.

BUNDLE

Declare claim graph for structured doctrine.

Backward Compatibility

v2.1 agents parse manifests as ordinary OBS packets about @m.* entities. Unknown keys ignored. Normal packets unaffected.