按规划继续工作

结论：补齐 LinuxCNC tooldata_common.cc 随机换刀器 load/save 验证边界，WASM/SDK/OPFS 只透传 random-toolchanger 配置；native、WASM、OPFS 和浏览器 smoke 验证已通过。

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

@@ -183,8 +183,13 @@ const bridgeInterp = {
     bridgeFiles.set(`${path}.bak`, "5161 0.0\n5162 0.0\n");
     return `save_parameters=0\nsave_path=${path}\nvalues=${Object.keys(values).join(",")}\n`;
   },
-  loadToolTable(path) {
-    return `tooldata_load=0\nload_tool_path=${path}\n`;
+  loadToolTable(path, options = {}) {
+    return [
+      "tooldata_load=0",
+      `load_tool_path=${path}`,
+      `random_toolchanger=${options.randomToolChanger === true ? 1 : 0}`,
+      "",
+    ].join("\n");
   },
   saveToolTable(path) {
     bridgeFiles.set(path, "T2   P2   Z+1.250000 D+0.250000 ;loaded by LinuxCNC\n");
@@ -230,10 +235,22 @@ const loadedToolTable = await loadMachineToolTableFromOpfs(
 assert.deepEqual(loadedToolTable, {
   opfsPath: "linuxcnc/machines/xyzab-tdr/tool.tbl",
   wasmPath: "/work/bridge-tool.tbl",
-  result: "tooldata_load=0\nload_tool_path=/work/bridge-tool.tbl\n",
+  result: "tooldata_load=0\nload_tool_path=/work/bridge-tool.tbl\nrandom_toolchanger=0\n",
 });
 assert.equal(bridgeFiles.get("/work/bridge-tool.tbl"), "T0 P0 ; no tool\nT2 P2 Z1.25 D0.25\n");
 
+const loadedRandomToolTable = await loadMachineToolTableFromOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  { storage, wasmPath: "/work/random-bridge-tool.tbl", randomToolChanger: true },
+);
+assert.deepEqual(loadedRandomToolTable, {
+  opfsPath: "linuxcnc/machines/xyzab-tdr/tool.tbl",
+  wasmPath: "/work/random-bridge-tool.tbl",
+  result:
+    "tooldata_load=0\nload_tool_path=/work/random-bridge-tool.tbl\nrandom_toolchanger=1\n",
+});
+
 const savedToolTable = await saveMachineToolTableToOpfs(
   bridgeInterp,
   "xyzab-tdr",
@@ -271,7 +288,7 @@ assert.deepEqual(loadedSession, {
   toolTable: {
     opfsPath: "linuxcnc/machines/xyzab-tdr/tool.tbl",
     wasmPath: "/work/session-tool.tbl",
-    result: "tooldata_load=0\nload_tool_path=/work/session-tool.tbl\n",
+    result: "tooldata_load=0\nload_tool_path=/work/session-tool.tbl\nrandom_toolchanger=0\n",
   },
 });
 assert.equal(bridgeFiles.get("/work/session.ini"), "[EMC]\nMACHINE = xyzab-tdr\n");
@@ -281,6 +298,22 @@ assert.equal(
   "T2   P2   Z+1.250000 D+0.250000 ;loaded by LinuxCNC\n",
 );
 
+const loadedRandomSession = await loadMachineSessionFromOpfs(
+  bridgeInterp,
+  "xyzab-tdr",
+  {
+    storage,
+    iniWasmPath: "/work/random-session.ini",
+    parameterWasmPath: "/work/random-session.var",
+    toolTableWasmPath: "/work/random-session-tool.tbl",
+    randomToolChanger: true,
+  },
+);
+assert.equal(
+  loadedRandomSession.toolTable.result,
+  "tooldata_load=0\nload_tool_path=/work/random-session-tool.tbl\nrandom_toolchanger=1\n",
+);
+
 await assert.rejects(
   () => loadTextFile("linuxcnc/machines/missing.ini", storage),
   /missing file/,