Add machine-aware maximum product length

README.md

@@ -108,6 +108,7 @@ Implemented routes:
 | `/api/calculations/roll/modify` | `POST` | Basic Auth | Applies explicit changes to structured calculation state and recalculates. |
 | `/api/calculations/transport` | `POST` | Basic Auth | Executes the shared transport-capacity analysis. |
 | `/api/calculations/production-feasibility` | `POST` | Basic Auth | Checks configured production-machine constraints. |
+| `/api/calculations/machine-max-product-length` | `POST` | Basic Auth | Calculates deterministic machine-aware maximum product lengths. |
 | `/api/reports/roll-calculation.pdf` | `POST` | Basic Auth | Recalculates a request authoritatively and returns a one-page PDF. |
 | `/api/conversations` | `POST` | Basic Auth | Creates an in-memory conversation session. |
 | `/api/conversations/<id>/messages` | `POST` | Basic Auth | Interprets one utterance and executes the deterministic workflow. |
@@ -123,8 +124,8 @@ direct roll calculation, product-length calculation, material-weight calculation
 transport analysis, and configured production-machine feasibility.
 The available PoC tools are `get_article`, `search_articles`,
 `calculate_material_weight`, `calculate_product_length`,
-`calculate_roll_diameter`, `analyze_transport_capacity`, `get_machine`, and
-`check_production_feasibility`.
+`calculate_roll_diameter`, `analyze_transport_capacity`, `get_machine`,
+`check_production_feasibility`, and `calculate_machine_max_product_length`.
 
 Install the pinned dependencies, including `mcp==1.26.0`, in the existing
 environment, then start it with:
@@ -148,6 +149,15 @@ Tool calling semantics:
 - `calculate_material_weight` calculates material-only weight from roll length,
   width, and area weight. It requires no core diameter, does not infer one, and
   cannot return a roll diameter or a core-inclusive total weight.
+- `calculate_machine_max_product_length` composes configured machine limits
+  with the shared calculation domain. Resolve an article first, then pass its
+  properties unchanged. Its nominal maximum uses the nominal diameter limit;
+  its conservative/no-warning maximum uses RollCalc's existing maximum-diameter
+  thickness variation. Both also respect configured material-only maximum roll
+  weight, and the domain returns the governing constraint(s), unrounded.
+  Core and width incompatibility cannot be corrected by shortening and is
+  returned structurally. No manufacturing increment, core/packaging/gross
+  weight, or conditional production rule is applied in V1.1.
 - `calculate_product_length` calculates required roll length from a target outer
   diameter, core diameter, and material thickness. Its optional thickness
   stddev returns minimum/average/maximum length ranges; optional width and area