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/p6/web-release-manifest.json

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@@ -2534,13 +2534,13 @@
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@@ -2614,8 +2614,8 @@
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     {
       "path": "web/src/web-website-adapter.ts",
@@ -2654,8 +2654,8 @@
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