Promote validated community knowledge

Move eight net-new rules into the Microsoft layer, remove six overlapping articles, and update review skill discovery and references.

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

Copilot-Session: 0b130227-d418-4bc0-9e7d-ec6a37adf039

microsoft/knowledge/error-handling/fielderror-default-message-logic.good.al

@@ -0,0 +1,21 @@
+table 50120 "FieldError Default Good"
+{
+    fields
+    {
+        field(1; "No."; Code[20]) { }
+        field(2; "Discount %"; Decimal) { }
+        field(3; "Currency Code"; Code[10]) { }
+    }
+
+    procedure ValidateForRelease()
+    begin
+        // TestField checks this required-field condition and raises the error
+        // with caption and record context supplied by the framework.
+        TestField("Currency Code");
+
+        // Condition already evaluated: pass only a lowercase predicate so it
+        // reads as one sentence after the auto-inserted caption and value.
+        if "Discount %" > 100 then
+            FieldError("Discount %", 'cannot exceed 100');
+    end;
+}