接入虚拟HAL会话保存恢复

结论：real simulation page 已提供显式 Save/Restore HAL Session 按钮与 browser API，使用 OPFS session snapshot 保存和恢复 virtual HAL runtime state，并随 payload 校验 source compliance、sim-config coverage、halcmd fixtures 与 motion controller matrix，证明虚拟HAL可恢复地满足Web方式数控系统仿真范围。

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

@@ -266,12 +266,14 @@ assert.equal(virtualHalSessionPayload.state.hal.nets["x-pos"].includes("axis.x.p
 assert.equal(virtualHalSessionPayload.sourceCompliance.complete, true);
 assert.equal(virtualHalSessionPayload.simConfigSourceCoverage.complete, true);
 assert.equal(virtualHalSessionPayload.commandScriptFixtures.complete, true);
+assert.equal(virtualHalSessionPayload.motionControllerMatrix.complete, true);
 const virtualHalSnapshotPayload = createMachineSessionSnapshotPayload("virtual-hal-machine", {
   gcodeFilename: "virtual-hal.ngc",
   virtualHal: virtualHalSessionPayload,
 });
 assert.equal(virtualHalSnapshotPayload.virtualHal.state.hal.signals["x-pos"].value, 2.25);
 assert.equal(virtualHalSnapshotPayload.virtualHal.commandScriptFixtures.coveredActions.includes("loadusr"), true);
+assert.equal(virtualHalSnapshotPayload.virtualHal.motionControllerMatrix.sourceFiles.includes("linuxcnc/src/emc/motion/axis.c"), true);
 assert.deepEqual(
   createMachineSessionSnapshotPayload("custom-machine", {
     parameterFilename: "custom.var",