NIGHTGATE v0.3.0

@odatano/nightgate 0.3.0

0.3.0 adds a full transaction-submission layer on top, so the plugin now both reads Midnight
chain data and writes to it via Compact contracts and wallet operations.

Highlights

• Contract submission: deployContract / submitContractCall with
  build → sign → submit through the Midnight JS SDK, run in a worker thread.
• Async job model: long-running actions return { jobId, status }
  immediately; poll getJobStatus(jobId, sessionId). Crash-recoverable.
• Wallet & funds: connectWalletForSigning (BIP39, Lace-compatible HD
  derivation), sendNight, shieldFunds / unshieldFunds, DUST
  register/deregister, plus read-only balance & fee-estimate diagnostics.
• Tiered disclosure: AttestationVault contract +
  Attestations / DisclosureRoles, the AttestationService SDK mixin
  (public / legitimate_interest / authority tiers), and anchorDocument
  / verifyDocument for on-chain document anchoring (caller-managed storage).
• ZK predicate attestations: prove value ≤ / ≥ threshold over a hidden
  value without revealing it (issuePredicateAttestation /
  verifyPredicateAttestation);
• Production private state: CAP-DB-backed, AES-256-GCM encrypted provider
  replacing the SDK's LevelDB store.
• Four OData V4 services: Nightgate, Indexer, Analytics, Admin.

Notes

Verified live on preprod: contract deploy + call, and a ZK predicate proof (47300 ≤ 50000 accepted, 51 ≤ 50 rejected by the circuit).

See CHANGELOG.md for the full list and
docs/reference.md for the complete API & configuration.

Preprod-First Readiness

What This Release Delivers

• SAP CAP plugin bootstrap through cds-plugin.js and src/plugin.ts
• cds.requires.nightgate configuration model for Midnight node indexing
• Direct WebSocket connectivity to a Midnight node through MidnightNodeProvider
• Catch-up indexing, live subscription, transient retry handling, and reorg rollback in the crawler
• Local CAP-database persistence for blocks, transactions, sync state, and reorg history
• OData services for blockchain reads, indexer operations, analytics, and admin session management
• Wallet-session connect/disconnect flows with encrypted viewing-key storage, TTL cleanup, and admin invalidation
• Health, readiness, liveness, and Prometheus-style metrics endpoints
• Offline startup mode when the node is unavailable
• Auto-deploy attempt when the target schema is missing