按规划继续工作

结论：OPFS 参数文件已通过桥接进入 LinuxCNC-backed WASM restore/save 路径，native 与 host/WASM/browser 验证全部通过。

wasm-port/tests/opfs/node/verify_file_service.mjs

@@ -28,6 +28,10 @@ import {
   saveGcodeProgram,
   saveMachineTextFiles,
 } from "../../../runtime/opfs/machine-file-store.js";
+import {
+  restoreMachineParametersFromOpfs,
+  saveMachineParametersToOpfs,
+} from "../../../runtime/opfs/linuxcnc-parameter-bridge.js";
 
 class MockFileHandle {
   constructor(name) {
@@ -153,6 +157,57 @@ assert.equal(
 );
 assert.equal(await loadGcodeProgram("fixture.ngc", { storage }), "G0 X0 Y0\nM2\n");
 
+const bridgeFiles = new Map();
+const bridgeInterp = {
+  writeTextFile(path, text) {
+    bridgeFiles.set(path, text);
+  },
+  readTextFile(path) {
+    if (!bridgeFiles.has(path)) {
+      throw new Error(`missing wasm file: ${path}`);
+    }
+    return bridgeFiles.get(path);
+  },
+  restoreParameters(path) {
+    return `restore_parameters=0\nrestore_path=${path}\n`;
+  },
+  saveParameters(path, values) {
+    bridgeFiles.set(path, "5161\t12.340000\n5162\t56.780000\n");
+    bridgeFiles.set(`${path}.bak`, "5161 0.0\n5162 0.0\n");
+    return `save_parameters=0\nsave_path=${path}\nvalues=${Object.keys(values).join(",")}\n`;
+  },
+};
+
+const restoredParameters = await restoreMachineParametersFromOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  { storage, wasmPath: "/work/bridge.var" },
+);
+assert.deepEqual(restoredParameters, {
+  opfsPath: "linuxcnc/machines/xyzab-tdr/linuxcnc.var",
+  wasmPath: "/work/bridge.var",
+  result: "restore_parameters=0\nrestore_path=/work/bridge.var\n",
+});
+assert.equal(bridgeFiles.get("/work/bridge.var"), "5161 0.0\n5162 0.0\n");
+
+const savedParameters = await saveMachineParametersToOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  { 5161: 12.34, 5162: 56.78 },
+  { storage, wasmPath: "/work/bridge.var" },
+);
+assert.equal(savedParameters.opfsPath, "linuxcnc/machines/xyzab-tdr/linuxcnc.var");
+assert.equal(savedParameters.backupOpfsPath, "linuxcnc/machines/xyzab-tdr/linuxcnc.var.bak");
+assert.equal(savedParameters.result.includes("save_parameters=0"), true);
+assert.equal(
+  await loadTextFile("linuxcnc/machines/xyzab-tdr/linuxcnc.var", storage),
+  "5161\t12.340000\n5162\t56.780000\n",
+);
+assert.equal(
+  await loadTextFile("linuxcnc/machines/xyzab-tdr/linuxcnc.var.bak", storage),
+  "5161 0.0\n5162 0.0\n",
+);
+
 await assert.rejects(
   () => loadTextFile("linuxcnc/machines/missing.ini", storage),
   /missing file/,