按规划继续工作

结论：解释器 WASM、SDK 统一入口、浏览器解释器 smoke 与兼容性文档已闭环，native 和 host/WASM/browser 验证全部通过。

wasm-port/runtime/sdk/README.md

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+# LinuxCNC WASM SDK
+
+This SDK exposes browser/Node JavaScript wrappers for standalone WASM modules
+built from vendored LinuxCNC source.
+
+## Boundary
+
+The SDK is a host-boundary layer only. It may:
+
+- load generated Emscripten modules;
+- allocate and free C strings;
+- write text files into the Emscripten filesystem;
+- call exported C ABI functions;
+- return LinuxCNC-produced text output to JavaScript callers.
+
+The SDK must not implement G-code interpretation, canonical motion behavior,
+tool semantics, parameter semantics, kinematics, or planner behavior. Those
+behaviors must continue to come from vendored LinuxCNC source through the C ABI.
+
+## Entrypoints
+
+Use `src/index.js` for stable imports:
+
+```js
+import {
+  createLinuxCncIniSdk,
+  createLinuxCncInterpSdk,
+} from "./src/index.js";
+```
+
+`createLinuxCncIniSdk()` wraps the INI parser module built from vendored
+LinuxCNC `inifile.cc`.
+
+`createLinuxCncInterpSdk()` wraps the interpreter-core module built from
+vendored LinuxCNC RS274NGC sources and exposes:
+
+- `runProgram(programText)`
+- `runProgramWithIni(programText, iniPath)`
+- `runFile(path)`
+- `runFileWithIni(path, iniPath)`
+- `writeTextFile(path, text)`

wasm-port/runtime/sdk/src/index.js

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+export { createLinuxCncIniSdk } from "./linuxcnc-ini.js";
+export { createLinuxCncInterpSdk } from "./linuxcnc-interp.js";

wasm-port/runtime/sdk/src/linuxcnc-interp.js

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+import createLinuxCncInterpModule from "../../../build/wasm/core/linuxcnc_interp.js";
+
+function allocCString(mod, value) {
+  const bytes = mod.lengthBytesUTF8(value) + 1;
+  const ptr = mod._malloc(bytes);
+  mod.stringToUTF8(value, ptr, bytes);
+  return ptr;
+}
+
+function ensureParentPath(mod, path) {
+  const parts = path.split("/").filter(Boolean);
+  let current = "";
+  for (const part of parts.slice(0, -1)) {
+    current += `/${part}`;
+    try {
+      mod.FS.mkdir(current);
+    } catch {
+      // Directory already exists.
+    }
+  }
+}
+
+function copyResultString(mod, resultPtr, functionName) {
+  if (!resultPtr) {
+    throw new Error(`${functionName} returned null`);
+  }
+  return mod.UTF8ToString(resultPtr);
+}
+
+function callStringResult(mod, functionName, ...values) {
+  const ptrs = values.map((value) => allocCString(mod, value));
+  let resultPtr = 0;
+  try {
+    resultPtr = mod[`_${functionName}`](...ptrs);
+    return copyResultString(mod, resultPtr, functionName);
+  } finally {
+    if (resultPtr) {
+      mod._lcinterp_free_string(resultPtr);
+    }
+    for (const ptr of ptrs) {
+      mod._free(ptr);
+    }
+  }
+}
+
+export async function createLinuxCncInterpSdk(moduleOptions = {}) {
+  const mod = await createLinuxCncInterpModule(moduleOptions);
+
+  return {
+    module: mod,
+
+    writeTextFile(path, text) {
+      ensureParentPath(mod, path);
+      mod.FS.writeFile(path, text, { encoding: "utf8" });
+    },
+
+    runProgram(programText) {
+      return callStringResult(mod, "lcinterp_run_program", programText);
+    },
+
+    runProgramWithIni(programText, iniPath) {
+      return callStringResult(mod, "lcinterp_run_program_with_ini", programText, iniPath);
+    },
+
+    runFile(path) {
+      return callStringResult(mod, "lcinterp_run_file", path);
+    },
+
+    runFileWithIni(path, iniPath) {
+      return callStringResult(mod, "lcinterp_run_file_with_ini", path, iniPath);
+    },
+  };
+}