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.

docs/current/web-assets-sync-timing.json

@@ -1,6 +1,6 @@
 {
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-  "generatedAt": "2026-09-15T12:44:51.525Z",
+  "generatedAt": "2026-09-15T16:40:06.033Z",
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@@ -13,14 +13,14 @@
     "/home/mes123456/FreeCADWasmDev/working/FreeCAD/freecad-source/build-web/configure/bin/FreeCADWebDocumentGraphFamilyProbe.js"
   ],
   "copyAttempts": 118,
-  "copied": 6,
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+  "copied": 3,
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   "missing": 14,
-  "copySeconds": 4.374626448,
-  "hashComputed": 6,
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-  "hashSeconds": 0.4709505330000001,
+  "copySeconds": 1.742073601,
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+  "hashSeconds": 0.26277629400000024,
   "manifestChanged": true,
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+  "manifestSeconds": 0.0032099859999998445,
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 }