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

@@ -45,6 +45,7 @@ export async function loadMachineSessionFromOpfs(interp, machineId, options = {}
     storage: options.storage,
     opfsPath: paths.toolTableOpfsPath,
     wasmPath: paths.toolTableWasmPath,
+    randomToolChanger: options.randomToolChanger === true,
   });
 
   return {

wasm-port/runtime/opfs/linuxcnc-tool-table-bridge.js

@@ -25,7 +25,9 @@ export async function loadMachineToolTableFromOpfs(interp, machineId, options =
   return {
     opfsPath,
     wasmPath,
-    result: interp.loadToolTable(wasmPath),
+    result: interp.loadToolTable(wasmPath, {
+      randomToolChanger: options.randomToolChanger === true,
+    }),
   };
 }