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.bad.al

@@ -0,0 +1,23 @@
+table 50120 "FieldError Default Bad"
+{
+    fields
+    {
+        field(1; "No."; Code[20]) { }
+        field(2; "Discount %"; Decimal) { }
+        field(3; "Currency Code"; Code[10]) { }
+    }
+
+    procedure ValidateForRelease()
+    begin
+        // This re-tests a field and gives FieldError a fully formed sentence.
+        // The framework already prepends the caption and appends the value,
+        // so this renders as "Currency Code The Currency Code field must have
+        // a value. in ..." — caption repeated, capital letter mid-sentence,
+        // stray trailing clause.
+        if "Currency Code" = '' then
+            FieldError("Currency Code", 'The Currency Code field must have a value.');
+
+        if "Discount %" > 100 then
+            FieldError("Discount %", 'The Discount % must not be greater than 100 percent.');
+    end;
+}