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

@@ -0,0 +1,41 @@
+# 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)`