Big Long Complex -v1.3- |best|

| Feature | v1.2 Limitation | v1.3 Solution | |---------|----------------|----------------| | Recursion depth | 256 levels | 4,096 levels (configurable) | | Transaction atomicity | All-or-nothing | Partial rollback with save states | | API verbosity | JSON only | Protobuf, CBOR, and custom binary |