feat(core): slab + sparse motifs, slice 1 -- flat field, monolith, platform at 0.52 s (L56); research R25

Motif vocabulary v3: version-1 records keyed by (seed, strate, stable ID) with route keepouts, band clearance and pairwise spacing. A rounded capped-cylinder monolith (r 1.4 m, 24 m tall) and a rounded-box plinth, smooth-unioned into a flatField floor with a 0.55 m geometric rounding (measured fillets 0.73-1.17 m). Exact radial/box interval bounds, a BVH, isTileShapeFree aware (0 brute-force misses, false-proof controls rejected). Final-field route passes; whole-surface audit covers foot, cap and platform edges. Cold whole view 0.524 s. Owner world unchanged. fast/medium/full PASS (Clang and GCC). Research R25 (self-checked): FloatingIslands LOD0 column cache conflicts. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
2026-10-25 07:47:15 +01:00
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commit 4e64b75044
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+#!/usr/bin/env python3
+"""Build the versioned L56 flat-field and sparse-motif fixture."""
+from __future__ import annotations
+
+import argparse
+import json
+import os
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[4]
+OWNER = ROOT / "Standalone/data/owner_world.json"
+OUT_DEFAULT = Path(os.environ.get("VOXELFORGE_VERIFY_OUT", ROOT / "Saved/Linux/l56"))
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--out", type=Path, default=OUT_DEFAULT / "fixtures")
+    args = parser.parse_args()
+    args.out.mkdir(parents=True, exist_ok=True)
+
+    fixture = json.loads(OWNER.read_text(encoding="utf-8"))
+    fixture["surface_profile_override"] = {
+        "version": 1,
+        "kind": "flatField",
+        "minimum_arena_clearance_m": 0.0,
+    }
+    fixture["motif_family_override"] = {
+        "version": 1,
+        "strate_index": 1,
+        "placement_policy": "seed,strate,stable_id",
+        "motifs": [
+            {
+                "stable_id": "motif/monolith-01-v1",
+                "kind": "cappedCylinder",
+                "radius_m": 1.4,
+                "height_m": 24.0,
+                "route_side_offset_m": 28.0,
+                "placement_radius_m": 4.0,
+                "fillet_radius_m": 0.55,
+                "blend_width_m": 1.6,
+                "minimum_spacing_m": 15.0,
+                "yaw_quarter_turns": 0,
+                "attachment": "seated_floor",
+            },
+            {
+                "stable_id": "motif/platform-01-v1",
+                "kind": "roundedBox",
+                "half_extents_m": [3.2, 2.8, 0.75],
+                "route_side_offset_m": -35.0,
+                "placement_radius_m": 4.0,
+                "fillet_radius_m": 0.55,
+                "blend_width_m": 1.6,
+                "minimum_spacing_m": 15.0,
+                "yaw_quarter_turns": 0,
+                "attachment": "seated_floor",
+            },
+        ],
+    }
+    path = args.out / "style-override-motifs-slice1.json"
+    path.write_text(json.dumps(fixture, indent=2) + "\n", encoding="utf-8")
+    print(f"[L56MotifFixture] path={path} profile=flatField motifs=2 "
+          "placement=seed,strate,stable_id status=PASS")
+
+
+if __name__ == "__main__":
+    main()