Update sparse mesh production profile and FP32 contract

plugins/schema.json

@@ -57,8 +57,22 @@
       "onnx": "production",
       "tensorrt": "production",
       "semantics": "SLat DAE sparse cube features to FlexiCubes mesh, vertex attributes and skin features",
-      "profile": {"sparse_cubes": [128, 32768, 262144], "resolution": 256},
-      "validation": "bench/sparse_mesh_topology_validation.json"
+      "profile": {
+        "sparse_cubes": [
+          128,
+          65536,
+          524288
+        ],
+        "resolution": 256
+      },
+      "validation": "bench/sparse_mesh_topology_validation.json",
+      "input_precision": "fp32",
+      "output_precision": {
+        "vertices": "fp32",
+        "attrs": "fp32",
+        "skin": "fp32",
+        "faces": "int32"
+      }
     }
   ],
   "implementation": {
@@ -66,4 +80,4 @@
     "runtime_registration": "plugins/tensorrt/companion_sparse_trt.py",
     "note": "Plans require plugin registration before deserialization. The ONNX ABI is stable and can later be backed by AOT C++/CUDA implementations without changing model graphs."
   }
-}
+}