继续完成 web-rtcp-5axis-sim-plan

结论：完成 LinuxCNC kinematics WASM ABI 覆盖，并将 web-rtcp-5axis-sim-plan 的 RTCP frame/boundary adapter 接到 xyzac-trt kinematics SDK；Node、build、browser smoke 验证通过。

web-rtcp-5axis-sim-plan/app/src/main.js

@@ -0,0 +1,19 @@
+import { createSimulationStore } from "./state/store.js";
+import { mountGmoccapyShell } from "./ui/gmoccapy-shell.js";
+
+const app = document.querySelector("#app");
+
+if (!app) {
+  throw new Error("Missing #app mount point");
+}
+
+const store = createSimulationStore();
+const shell = mountGmoccapyShell(app, store);
+
+window.webRtcp5AxisSimulation = {
+  getState: store.getState,
+  dispatch: store.dispatch,
+  getRegions: shell.getRegions,
+};
+
+store.dispatch({ type: "BOOT_READY" });