Added OSC

README.md

@@ -158,6 +158,16 @@ http://127.0.0.1:<serverPort>/docs
 
 Use those docs to inspect the `/api/state`, layer control, stack preset, and reload endpoints. Live state updates are also sent over the `/ws` WebSocket.
 
+## OSC Control
+
+The native host also listens for local OSC parameter control on the configured `oscPort`:
+
+```text
+/VideoShaderToys/{LayerNameOrID}/{ParameterNameOrID}
+```
+
+For example, `/VideoShaderToys/VHS/intensity` updates the `intensity` parameter on the first matching `VHS` layer. The listener accepts float, integer, string, and boolean OSC values, and validates them through the same shader parameter path as the REST API. See `docs/OSC_CONTROL.md` for details.
+
 ## Shader Packages
 
 Each shader package lives under: