按规划继续工作

结论：接入 LinuxCNC iniFindBool 到 INI WASM/SDK，并让 machine-session bridge 通过 vendored INI 解析 [EMCIO]RANDOM_TOOLCHANGER 后透传给 tooldata；native、WASM、OPFS 和浏览器 smoke 验证已通过。

wasm-port/runtime/core/linuxcnc_wrap/linuxcnc_ini_wasm.cpp

@@ -13,6 +13,19 @@ int lcini_get_string(const char *inipath,
     return iniFindString(inipath, tag, section, buf, static_cast<size_t>(bufsize));
 }
 
+EMSCRIPTEN_KEEPALIVE
+int lcini_get_bool(const char *inipath,
+                   const char *section,
+                   const char *tag,
+                   int *result) {
+    bool value = false;
+    const int rc = iniFindBool(inipath, tag, section, &value);
+    if (rc == 0 && result) {
+        *result = value ? 1 : 0;
+    }
+    return rc;
+}
+
 EMSCRIPTEN_KEEPALIVE
 int lcini_tilde_expand(const char *path, char *buf, int bufsize) {
     return TildeExpansion(path, buf, static_cast<size_t>(bufsize));

wasm-port/runtime/opfs/linuxcnc-machine-session-bridge.js

@@ -17,6 +17,17 @@ function requireSessionSdk(interp) {
   }
 }
 
+function requireIniSdk(iniSdk) {
+  if (!iniSdk) {
+    return;
+  }
+  for (const method of ["writeTextFile", "getBool"]) {
+    if (typeof iniSdk[method] !== "function") {
+      throw new Error(`INI SDK is missing ${method}().`);
+    }
+  }
+}
+
 function resolveSessionPaths(machineId, options = {}) {
   return {
     iniOpfsPath: options.iniOpfsPath ?? machineIniPath(machineId, options.iniFilename),
@@ -30,11 +41,25 @@ function resolveSessionPaths(machineId, options = {}) {
   };
 }
 
+function randomToolChangerFromIni(iniSdk, iniWasmPath, iniText) {
+  if (!iniSdk) {
+    return false;
+  }
+
+  iniSdk.writeTextFile(iniWasmPath, iniText);
+  return iniSdk.getBool(iniWasmPath, "EMCIO", "RANDOM_TOOLCHANGER") === true;
+}
+
 export async function loadMachineSessionFromOpfs(interp, machineId, options = {}) {
   requireSessionSdk(interp);
+  requireIniSdk(options.iniSdk);
   const paths = resolveSessionPaths(machineId, options);
   const iniText = await loadTextFile(paths.iniOpfsPath, options.storage);
   interp.writeTextFile(paths.iniWasmPath, iniText);
+  const randomToolChanger =
+    typeof options.randomToolChanger === "boolean"
+      ? options.randomToolChanger
+      : randomToolChangerFromIni(options.iniSdk, paths.iniWasmPath, iniText);
 
   const parameters = await restoreMachineParametersFromOpfs(interp, machineId, {
     storage: options.storage,
@@ -45,7 +70,7 @@ export async function loadMachineSessionFromOpfs(interp, machineId, options = {}
     storage: options.storage,
     opfsPath: paths.toolTableOpfsPath,
     wasmPath: paths.toolTableWasmPath,
-    randomToolChanger: options.randomToolChanger === true,
+    randomToolChanger,
   });
 
   return {

wasm-port/runtime/sdk/README.md

@@ -29,7 +29,8 @@ import {
 ```
 
 `createLinuxCncIniSdk()` wraps the INI parser module built from vendored
-LinuxCNC `inifile.cc`.
+LinuxCNC `inifile.cc` and exposes `getString()` plus `getBool()`. Boolean
+conversion is performed by vendored LinuxCNC `iniFindBool()`.
 
 `createLinuxCncInterpSdk()` wraps the interpreter-core module built from
 vendored LinuxCNC RS274NGC sources and exposes:

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

@@ -55,6 +55,23 @@ export async function createLinuxCncIniSdk(moduleOptions = {}) {
       }
     },
 
+    getBool(path, section, tag) {
+      const pathPtr = allocCString(mod, path);
+      const sectionPtr = allocCString(mod, section);
+      const tagPtr = allocCString(mod, tag);
+      const outPtr = mod._malloc(4);
+
+      try {
+        const rc = mod._lcini_get_bool(pathPtr, sectionPtr, tagPtr, outPtr);
+        return rc === 0 ? mod.HEAP32[outPtr >> 2] !== 0 : null;
+      } finally {
+        mod._free(pathPtr);
+        mod._free(sectionPtr);
+        mod._free(tagPtr);
+        mod._free(outPtr);
+      }
+    },
+
     getFields(path, fields) {
       return Object.fromEntries(
         Object.entries(fields).map(([name, query]) => [

wasm-port/runtime/ui/ini-panel/app.js

@@ -204,7 +204,10 @@ document.getElementById("load-session").addEventListener("click", async () => {
     loadedSession = await loadMachineSessionFromOpfs(
       requireInterpSdk(),
       MACHINE_ID,
-      SESSION_WASM_FILES,
+      {
+        ...SESSION_WASM_FILES,
+        iniSdk: requireIniSdk(),
+      },
     );
     setField("sessionIni", loadedSession.ini.wasmPath);
     setField("sessionParameters", loadedSession.parameters.wasmPath);