Save verified native IFC import and user validation evidence

Real IFC2X3/IFC4 import tested. Full BIM authoring/export remains out of scope; 349-second building import performance remains to optimize.

tools/run_user_manual_tests.mjs

@@ -210,6 +210,8 @@ const remainingCases = createRemainingCases({ root, output, fixture, step, open,
 
 try {
   await setup();
+  if (process.env.FREECAD_MANUAL_IDS?.split(',').includes('FIX-IFC-REOPEN'))
+    await test('FIX-IFC-REOPEN','IFC 原生文档保存重开回归',remainingCases['FIX-IFC-REOPEN']);
   await test('UI-01','首次启动与刷新',async()=>{
     await step('打开隔离测试站点',()=>open(),'React 已挂载，跨源隔离生效');
     await step('检查树、属性、视口和 OPFS',async()=>{const s=await evaluate("({tree:!!document.querySelector('[role=tree]'),properties:!!document.querySelector('[aria-label=\"Object Properties\"]'),canvas:!!document.querySelector('canvas'),opfs:typeof navigator.storage.getDirectory==='function'})");check(Object.values(s).every(Boolean),'Missing main workspace region');return s;},'主工作区完整，不以路由登记代替运行结果');