- runJS() now returns a value to Lua via a request/response round trip
(ClientQueryRegistry future + hex-encoded JS result payload) instead
of firing and forgetting.
- New webdisplay_load CC event fires on page load state change/error,
via TileEntityCCInterface's IPeripheral attach/detach + polling.
- ClientProxy implements the new ILoadStateHandler, forwarding
onLoadingStateChange/onLoadError to the server over a new
SMessageScreenCtrl CTRL_LOAD_STATE action (CTRL_JS_EVAL_RESULT added
for the runJS result path).
- Bump bundled libs/mcef.jar to the mcef-legacy build with Chrome 152
dual-ABI support.