Add enhanced house presentation, client film and walkable Unreal prototype

decisions/2026-09-12-v007-presentation-and-walkthrough.md

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+# Presentation and walkable homestead
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+Improve the approved concept for communication without redesigning the buildings. New natural-finish detail, 420 softened edges, woven pendants, table settings, textiles and fuller planting. Keep editable full detail plus a lightweight display. Preserve the 31-chapter inspection tour and create a separate eight-shot camera edit.
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+Deliver a 30-second silent H.264 concept film, with honest documentation of source frame size, interpolation and output size. Add the complete site to a new UE 5.8.2 project with grouped geometry, portable material maps, bundled ArchVisCharacter, and complex mesh collision. Test actual Play mode after asset/physics initialization. Do not conflate the earlier meditation-only study with the new whole-site prototype, or label the prototype a packaged application.
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+Verification: saved Blender feature/caption/material checks; inspected Cycles stills and film contact sheet; MP4 codec/duration/dimensions checked; saved Unreal scene and actual captures inspected; eight floor traces and possessed-character walking passed on a fresh launch.
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+Final review repaired the mixer upright hidden by the clay lining and replaced the obstructed bedroom film shot with a clear interior view. The final model and clip contain a visible connected copper riser. The Unreal map includes the matching small cylinder; apply Content/Python/fix_tap_connection.py after rebuilding from the base transfer FBX.