- #954: Add differential tests for Rust and client tag normalization
- #950: Add tag transfer event schema versioning
- #970: Add wallet supported-token policy tests
- #938: Add payment idempotency keys for client retries
- #940: Add payment archival with queryable summaries
- #920: Add escrow refund after expiry
- #922: Add escrow dispute and resolution transitions
- #973: Add wallet router rotation event schema
- #799: Define Rust contract backward-compatibility guarantees
- #1000: Add property tests for arithmetic and fee calculations
- #776: Separate user state from protocol configuration in Rust storage
- #805: Add secure key storage adapters for Rust signers