feat(simulation): prefer rover world terrain

tests/test_gaussian_pipeline_gateway.py

@@ -350,7 +350,14 @@ def test_gateway_rejects_symlink_source_and_token(tmp_path: Path) -> None:
         )
 
 
-def test_gateway_submits_tracks_and_imports_digest_bound_artifact(tmp_path: Path) -> None:
+@pytest.mark.parametrize(
+    "result_schema",
+    ["gaussian-pipeline.build-result/v1", "gaussian-pipeline.build-result/v2"],
+)
+def test_gateway_submits_tracks_and_imports_digest_bound_artifact(
+    tmp_path: Path,
+    result_schema: str,
+) -> None:
     artifact = b"preview-sog"
     artifact_sha = hashlib.sha256(artifact).hexdigest()
     job_id = "gsp-20260825200000-deadbeef"
@@ -375,7 +382,7 @@ def test_gateway_submits_tracks_and_imports_digest_bound_artifact(tmp_path: Path
             return httpx.Response(
                 200,
                 json={
-                    "schema_version": "gaussian-pipeline.build-result/v1",
+                    "schema_version": result_schema,
                     "job_id": job_id,
                     "runtime": {
                         "source_revision": "a" * 40,

tests/test_simulation_projects.py

@@ -16,6 +16,7 @@ from k1link.simulation.projects import (
     SimulationProjectConflictError,
     SimulationProjectService,
     SimulationProjectStore,
+    _world_manifest,
 )
 from k1link.web.simulation_projects_api import build_simulation_projects_router
 
@@ -224,6 +225,27 @@ def test_service_materializes_world_manifest_and_deletes_both_copies(tmp_path: P
     assert provider.deleted == ["gsp-20260826000000-deadbeef"]
 
 
+def test_world_manifest_prefers_seed_connected_rover_terrain() -> None:
+    manifest = _world_manifest(
+        "sim-" + "a" * 32,
+        [
+            {
+                "role": "collision-mesh",
+                "logical_path": "collision/scene.collision.glb",
+            },
+            {
+                "role": "rover-terrain-mesh",
+                "logical_path": "rover/terrain.collision.glb",
+            },
+        ],
+    )
+
+    assert manifest["collision"]["available"] is True
+    assert manifest["collision"]["mesh_url"].endswith(
+        "/artifacts/rover/terrain.collision.glb"
+    )
+
+
 def test_service_resumes_a_persisted_provider_job_without_reupload(tmp_path: Path) -> None:
     store = SimulationProjectStore(tmp_path)
     project = store.create(