Add enhanced house presentation, client film and walkable Unreal prototype

walkthroughs/CLIENT-PRESENTATION-V007.md

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+# Samford Valley — presentation and walkable prototype, v007
+
+This revision develops the approved Samford Valley concept for design conversations and client presentations. It preserves the modular layout, future shadow pavilions, natural material direction and all previous house features.
+
+## Watch the film
+
+`walkthroughs/video/Samford-Valley-Concept-Film-v007.mp4` is the client presentation master. It contains real animated Blender camera views, introductory and closing cards, and short captions. H.264 MP4, 1920 × 1080, 24 fps, 30 seconds, no audio. It plays in QuickTime or a normal browser.
+
+The film uses Cycles source frames rendered at 1440 × 810, six source frames per second, then optical-flow interpolation within each shot to 24 fps and upscale to 1080p. The editable cinematic retains the camera animation at 24 fps and 1920 × 1080 for a future full-frame, higher-sample render. This is a first concept film rather than final photorealistic marketing output.
+
+## Walk in Unreal Engine
+
+Open `unreal/SamfordHomestead/SamfordHomestead.uproject` in Unreal Engine 5.8.2 on this Mac. Allow the first shader load to finish. The homestead level opens automatically.
+
+1. Press the green Play button, then click inside the viewport.
+2. Use W/A/S/D to walk and the mouse to look around.
+3. Escape stops play. Shift+F1 releases the mouse while playing.
+4. Start on the main verandah, walk into the kitchen/living room or down the front steps to the garden. The curved covered walkway leads to the meditation room.
+
+The pawn uses Epic's bundled ArchVisCharacter plugin. It has a human-scale collision capsule and walking movement rather than free flight. The new project contains the entire site as grouped meshes with transferred material maps, collision, lights and presentation cameras. Python Editor Script, Editor Scripting Utilities, ArchVisCharacter, Sequencer Scripting and Movie Render Pipeline are bundled plugins enabled in the project; no external paid plugin is required.
+
+This is an editable editor-play prototype, not a packaged application or browser-hosted simulation. Some large mesh groups and procedural material approximations will need finer optimization and art direction before production delivery. Open presentation faces are retained to match the Blender concept. Unbuilt pavilions have no collision. There are no interactive doors, product switches, VR controls or construction-stage simulation yet.
+
+## Blender files
+
+- `blender/samford-solarpunk-presentation-tour.blend`: current enhanced whole-site scene, Cycles 2560 × 1440, all 31 inspection-tour chapters. FAST TOUR is the lightweight viewport; DETAIL contains the editable render geometry.
+- `blender/samford-client-cinematic.blend`: separate 24-second, eight-shot camera edit with the detailed geometry and no inspection captions. The opening/closing cards and film labels are added during encoding.
+
+Changes: finer natural-finish variation and roughness, 420 softened construction/furniture edges, original woven cane kitchen pendants, stoneware table settings, a woven living rug and loose cushions, visible track/bolt details, fuller curved-leaf planting, and mineral chips along garden paths. Building positions remain unchanged.
+
+## Continue development
+
+`source/samford-v007-client-walkthrough/source/` contains the Blender enhancement, export, render, encode and verification scripts. `unreal/transfer/` contains the full-site FBX, portable textures and a manifest. Unreal setup and validation scripts live under `unreal/SamfordHomestead/Content/Python/`. The previous meditation-only Unreal study remains a separate historical project.
+
+Next useful work: choose a surveyed property; refine human-scale access and all room routes; replace illustrative vegetation and some material approximations with selected production assets; optimize mesh grouping, LODs and collision; add optional closed-façade mode and interactive doors; author an Unreal Sequencer film; render a final full-frame presentation; package and test a client application for their target computer. LiDAR import and construction coordination remain later stages.
+
+The design has no supplied cadastral boundary, surveyed terrain or engineering documentation. Treat the video and walkable model as concept communication, not an approved or site-verified construction proposal.
+
+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.