Add machine-aware maximum product length

tests/test_mcp_adapter.py

@@ -14,6 +14,7 @@ from roll_calculation import (
 )
 from rollcalc_mcp_tools import (
     analyze_transport_capacity_result,
+    calculate_machine_max_product_length_result,
     check_production_feasibility_result,
     calculate_material_weight_result,
     calculate_product_length_result,
@@ -22,7 +23,11 @@ from rollcalc_mcp_tools import (
     get_machine_result,
     search_articles_result,
 )
-from machine_constraints import check_production_feasibility, get_machine
+from machine_constraints import (
+    calculate_machine_max_product_length,
+    check_production_feasibility,
+    get_machine,
+)
 from transport_calculation import analyze_transport, transport_presets
 
 
@@ -98,6 +103,20 @@ class McpAdapterTests(unittest.TestCase):
             "feasible_with_warnings",
         )
 
+    def test_machine_maximum_length_adapter_delegates_to_shared_domain(self):
+        arguments = {
+            "machine": "K7",
+            "core_diameter_mm": 133.0,
+            "thickness_mm": 4.311611,
+            "thickness_stddev_mm": 0.249999,
+            "product_width_m": 6.0,
+            "area_weight_g_m2": 495.395833,
+        }
+        self.assertEqual(
+            calculate_machine_max_product_length_result(**arguments),
+            calculate_machine_max_product_length(**arguments),
+        )
+
     def test_material_weight_adapter_delegates_without_a_core_diameter(self):
         arguments = {
             "roll_length_m": 60.0,
@@ -220,6 +239,7 @@ class McpAdapterTests(unittest.TestCase):
                 "search_articles",
                 "get_machine",
                 "check_production_feasibility",
+                "calculate_machine_max_product_length",
                 "calculate_material_weight",
                 "calculate_product_length",
                 "calculate_roll_diameter",
@@ -233,6 +253,7 @@ class McpAdapterTests(unittest.TestCase):
         search_tool = tools["search_articles"]
         machine_tool = tools["get_machine"]
         feasibility_tool = tools["check_production_feasibility"]
+        maximum_tool = tools["calculate_machine_max_product_length"]
         material_weight_tool = tools["calculate_material_weight"]
         product_length_tool = tools["calculate_product_length"]
         roll_schema = tools["calculate_roll_diameter"].parameters
@@ -250,6 +271,21 @@ class McpAdapterTests(unittest.TestCase):
         self.assertIn("never override failed constraints", feasibility_tool.description)
         self.assertIn("warnings", feasibility_tool.description)
         self.assertIn("Missing configured V1 roll inputs", feasibility_tool.description)
+        self.assertEqual(
+            maximum_tool.parameters["required"],
+            ["machine", "core_diameter_mm", "thickness_mm"],
+        )
+        self.assertIn("product_width_m", maximum_tool.parameters["properties"])
+        self.assertIn("area_weight_g_m2", maximum_tool.parameters["properties"])
+        for text in (
+            "Resolve the article first with search_articles/get_article",
+            "Do not supply or invent machine limits",
+            "rearrange roll or weight formulas",
+            "compare candidate limits yourself",
+            "nominal and conservative/no-warning production maxima",
+            "incompatibility rather than substituting another core or width",
+        ):
+            self.assertIn(text, maximum_tool.description)
         self.assertEqual(
             search_tool.parameters["properties"]["query"]["type"], "string"
         )