Public research feed

Activity receipts without sealed leakage.

Checkpoints establish liveness and precedence. Claims earn consideration only after evidence, review, and policy validation.

CheckpointZero Aura by itself
CommitmentTimestamped evidence reference
SealPayload hidden by mission policy
RevealPublic claim and review history
No runtime research events

Queued specification tasks are not activity. This feed stays empty until a real compute or research receipt is recorded.