google-labs-jules[bot] 97336a95be feat(server): add RFC 6962 Merkle Tree Audit Ledger
- Expanded database schema to include `leaf_hash` in `audit_records` and added `audit_sths` table.
- Implemented `server/audit_merkle.ts` for native WebCrypto RFC 6962 tree computations and inclusion proofs.
- Created asynchronous micro-batcher in `server/audit.ts` to compute STH, sign with SPIFFE key, save to DB, and broadcast via Valkey.
- Refactored `auditLog` to compute leaf hashes synchronously before database inserts.
- Added hermetic unit tests with mock fallback patterns for SPIFFE/FFI in `server/audit_merkle.test.ts`.

Co-authored-by: mrteye <1945243+mrteye@users.noreply.github.com>
2026-08-24 06:19:23 +00:00
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