feat: integrate SimpleCADAPI 2.0.2 CAD workflows

text-to-cad/tests/python/skills/cad-router/test_route.py

@@ -24,6 +24,32 @@ class CadRouterTests(unittest.TestCase):
         result = route_module.route(self.parse("生成一个模数 2 的人字齿轮"))
         self.assertEqual("simplecadapi", result["selected_backend"])
 
+    def test_routes_new_standard_factories_to_simplecadapi(self) -> None:
+        for request in (
+            "生成一个 M8 六角螺栓",
+            "生成一个 08B 滚子链轮",
+            "生成一个模数 2 的直齿锥齿轮",
+        ):
+            with self.subTest(request=request):
+                result = route_module.route(self.parse(request))
+                self.assertEqual("simplecadapi", result["selected_backend"])
+
+    def test_routes_semantic_units_and_tolerances_to_simplecadapi(self) -> None:
+        result = route_module.route(
+            self.parse("生成参数化法兰，保留语义标签、毫米单位和公差链")
+        )
+        self.assertEqual("simplecadapi", result["selected_backend"])
+        self.assertIn(
+            "semantic_graph_and_replay",
+            result["routing_policy"]["requirements"],
+        )
+
+    def test_routes_custom_freeform_surface_to_build123d(self) -> None:
+        result = route_module.route(
+            self.parse("生成带 NURBS 自由曲面的定制外壳")
+        )
+        self.assertEqual("build123d", result["selected_backend"])
+
     def test_routes_connecting_rod_to_build123d(self) -> None:
         result = route_module.route(self.parse("生成中心距 120mm 的发动机连杆"))
         self.assertEqual("build123d", result["selected_backend"])
@@ -32,6 +58,49 @@ class CadRouterTests(unittest.TestCase):
         result = route_module.route(self.parse("修改现有零件的孔径", "--existing-model"))
         self.assertEqual("build123d", result["selected_backend"])
 
+    def test_uploaded_step_uses_surfaceir_and_simplecad_brep_validation(self) -> None:
+        result = route_module.route(
+            self.parse(
+                "重建上传的零件",
+                "--edit-source",
+                "/tmp/source.step",
+            )
+        )
+        policy = result["routing_policy"]
+        self.assertEqual("surfaceir", policy["effective_execution_engine"])
+        self.assertEqual(
+            [
+                "surfaceir_geometry_acceptance",
+                "simplecadapi_brep_compare",
+            ],
+            policy["validation_engines"],
+        )
+        self.assertEqual(
+            "SimpleCADAPI 2.0.2",
+            result["execution_adapter"]["supplemental_brep_acceptance"],
+        )
+
+    def test_existing_designir_preserves_simplecadapi_backend(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            source = Path(directory) / "part.designir.json"
+            source.write_text(
+                json.dumps(
+                    {
+                        "schema_version": "3.0",
+                        "backend_hint": "simplecadapi",
+                    }
+                ),
+                encoding="utf-8",
+            )
+            result = route_module.route(
+                self.parse("把孔径增加 1mm", "--edit-source", str(source))
+            )
+        self.assertEqual("simplecadapi", result["selected_backend"])
+        self.assertEqual(
+            "simplecadapi",
+            result["routing_policy"]["native_source_backend"],
+        )
+
     def test_every_route_has_fixed_step_artifact_contract(self) -> None:
         result = route_module.route(self.parse("做一个参数化旋钮"))
         self.assertEqual(
@@ -55,6 +124,13 @@ class CadRouterTests(unittest.TestCase):
         selected = next(item for item in result["backend_scores"] if item["backend"] == "build123d")
         self.assertIn("explicit backend override", selected["reasons"])
 
+    def test_probe_reports_simplecadapi_202_capability_contract(self) -> None:
+        result = route_module.route(self.parse("生成一个齿轮", "--probe"))
+        simplecad = result["availability"]["simplecadapi"]
+        self.assertTrue(simplecad["available"])
+        self.assertTrue(simplecad["compatible"])
+        self.assertEqual("2.0.2", simplecad["minimum_version"])
+
     def test_generalized_experience_is_loaded_without_case_geometry(self) -> None:
         payload = {
             "schema_version": "2.0",