Promote knowledge for Microsoft review skills (#153)

Move canonical knowledge for Microsoft-owned review domains into the Microsoft layer and document the skill/knowledge co-location policy.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com>
Copilot-Session: 2a6ea875-d38e-4f30-aadb-0d606f9be231

microsoft/knowledge/performance/case-true-of-for-long-condition-chains.good.al

@@ -0,0 +1,48 @@
+codeunit 50542 "Perf Sample CaseChain Good"
+{
+    procedure IsShippableLine(SalesLine: Record "Sales Line"): Boolean
+    var
+        Item: Record Item;
+    begin
+        // 'case false of' matches value sets in order and stops at the first match.
+        // The first three checks are pure and order-independent, so they share one
+        // value set. Get and Blocked are each their own value set, in order, because
+        // the ordering the documentation guarantees is across value sets, not within
+        // one — Item.Get must run, and succeed, before Blocked is read.
+        case false of
+            SalesLine.Type = SalesLine.Type::Item,
+            SalesLine."No." <> '',
+            SalesLine."Qty. to Ship" > 0:
+                exit(false);
+            Item.Get(SalesLine."No."):
+                exit(false);
+            not Item.Blocked:
+                exit(false);
+        end;
+        exit(true);
+    end;
+
+    procedure FindOpenDocumentType(CustomerNo: Code[20]): Text
+    begin
+        // 'case true of' stops at the first condition that holds, so the later
+        // lookups never run once an earlier one matched.
+        case true of
+            HasOpenDocument(CustomerNo, "Sales Document Type"::Quote):
+                exit('Quote');
+            HasOpenDocument(CustomerNo, "Sales Document Type"::Order):
+                exit('Order');
+            HasOpenDocument(CustomerNo, "Sales Document Type"::Invoice):
+                exit('Invoice');
+        end;
+        exit('None');
+    end;
+
+    local procedure HasOpenDocument(CustomerNo: Code[20]; DocumentType: Enum "Sales Document Type"): Boolean
+    var
+        SalesHeader: Record "Sales Header";
+    begin
+        SalesHeader.SetRange("Document Type", DocumentType);
+        SalesHeader.SetRange("Sell-to Customer No.", CustomerNo);
+        exit(not SalesHeader.IsEmpty());
+    end;
+}