feat(aztec-nr): add calculate_secret_and_index constrained-delivery helper#23866
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This was referenced Jun 4, 2026
…elper Add the sender-side helper that resolves the app-siloed handshake secret and the next per-secret index for a constrained send: it queries the handshake registry off-chain, bootstraps a non-interactive handshake when none exists, and constrains the oracle-supplied secret via the registry's validate path or the prior-nullifier chain. Adds the DOM_SEP__CONSTRAINED_MSG_NULLIFIER domain separator and a test contract exercising the helper directly. The high-level builder still mocks constrained tagging (see F-697); the emit helper that wires this into delivery and the e2e test land in F-670.
… API Follow-up to the OnchainDeliveryMode constructor hiding: the constrained delivery helper and its test contract no longer reference the raw ONCHAIN_CONSTRAINED discriminant or the private mode constructors. calculate_secret_and_index derives the mode once via MessageDelivery::onchain_constrained().mode(), serializes registry-call arguments with mode.to_field(), and passes the typed mode to get_next_tagging_index.
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Flakey Tests🤖 says: This CI run detected 1 tests that failed, but were tolerated due to a .test_patterns.yml entry. |
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Fixes F-669
calculate_secret_and_indexreads the registry secret hint, bootstraps a non-interactive handshake when none exists, and constrains the hints: index 0 validates the handshake against the registry, index > 0 proves the previous chain nullifier exists.DOM_SEP__CONSTRAINED_MSG_NULLIFIERdomain separator.Stacked on #23865 (F-697); followed by #23867 (F-670).