:sig
bool unit_compile(String path = "")

:params
path : optional UCE unit path. If empty, recompiles the current executing unit.
return value : `true` when the unit was compiled and loaded successfully

:desc
Triggers a manual recompile of a UCE compilation unit.

If `path` is relative, it is resolved relative to the current executing unit. Successful manual compiles also refresh the in-memory metadata for that unit.

:see
unit_info
units_list

:related
**PHP:** Template compilation or preloading steps that generate cached PHP artifacts
**JavaScript / Node.js:** Build-step compilation, bundling, or ahead-of-time template transforms