Let a caller filter order lines instead of paging the table

The backend gained productcode, ordernumber and ordernumber__status on the
order-lines list; the spec and the MCP tools now carry them.

The pair that matters is productcode with ordernumber__status: the first says
what is committed on a reference, the second restricts it to orders still open.
Without the second the answer counts every line ever shipped.

Regenerated with k8s-platform/tools/generate-mcp-tools.py, not by hand.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

kong/mcp/ai-mcp-proxy.yaml

@@ -359,9 +359,30 @@ config:
       destructive_hint: false
       open_world_hint: false
     description: Retrieve a paginated list of all order line items with product and quantity information.
+      Filter by product code to find what is committed on a reference, and by order status to count only
+      orders still open.
     method: GET
     name: list-order-details
     parameters:
+    - description: Only lines for this product reference.
+      in: query
+      name: productcode
+      required: false
+      schema:
+        type: string
+    - description: Only lines belonging to this order.
+      in: query
+      name: ordernumber
+      required: false
+      schema:
+        type: integer
+    - description: Only lines whose order has this status, e.g. In Process, On Hold, Shipped, Cancelled.
+        An order that is Shipped or Cancelled commits no stock.
+      in: query
+      name: ordernumber__status
+      required: false
+      schema:
+        type: string
     - description: A page number within the paginated result set.
       in: query
       name: page