benchmark: publish geometry results

benchmark_output/simam3d_deterministic_benchmark.json

@@ -1,8 +1,34 @@
 {
   "project": "Simam3D",
   "mode": "deterministic_cpu_regression",
-  "scope": "synthetic fusion/export fixture; not a learned reconstruction benchmark",
+  "scope": "synthetic geometry/fusion/export fixture; not a learned reconstruction benchmark",
   "all_deterministic": true,
+  "geometry_contract": {
+    "all_passed": true,
+    "rows": [
+      {
+        "size": 32,
+        "point_count": 1024,
+        "rmse": 4.313558114242215e-08,
+        "max_error": 1.081297194488346e-07,
+        "passed": true
+      },
+      {
+        "size": 48,
+        "point_count": 2304,
+        "rmse": 5.881125733584641e-08,
+        "max_error": 1.5006853654069681e-07,
+        "passed": true
+      },
+      {
+        "size": 64,
+        "point_count": 4096,
+        "rmse": 4.835560002766234e-08,
+        "max_error": 1.3336136036143384e-07,
+        "passed": true
+      }
+    ]
+  },
   "rows": [
     {
       "size": 32,