:title
ucb_encode

:sig
String ucb_encode(DValue value)

:see
ucb_decode
0_DValue
json_encode

:content
Serializes a `DValue` to UCEB1, UCE's binary DValue wire format for the WASM membrane and future cross-instance calls.

UCEB1 is length-prefixed and binary-safe. It preserves nested maps, list-shaped maps, empty lists, and scalar bytes, including embedded NUL bytes. Use JSON/YAML/XML serializers for human-facing formats; use UCEB1 when UCE code needs the native DValue protocol.

```cpp
DValue payload;
payload["name"] = "uce";
payload["items"].push("first");

String bytes = ucb_encode(payload);
```
