Add 15 community knowledge articles from BC Code Intel ingest

Ingests net-new /community knowledge from BC Code Intelligence, surviving
the admission test, gray-zone salvage, and dedup against the full corpus.

Domains: ui (6), error-handling (3), performance (2), upgrade (1),
appsource (1), security (1), telemetry (1). The two BC24 No. Series
migration drafts are merged into one article.

Adds good/bad AL samples for the clean-fit articles (error-handling,
performance, security, telemetry). UI and appsource remain knowledge-only.

Validator and knowledge-index checks pass (207 articles).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

community/knowledge/error-handling/table-event-subscriber-rolls-back-whole-batch.good.al

@@ -0,0 +1,33 @@
+codeunit 50124 "Batch Import Good Sample"
+{
+    procedure ImportAll(var StagingLine: Record "Sales Line")
+    var
+        FailedCount: Integer;
+    begin
+        if StagingLine.FindSet() then
+            repeat
+                // Isolate each record behind a Codeunit.Run boundary: a failure
+                // inside the run rolls back only that record's work, and the
+                // batch continues instead of discarding everything.
+                if not Codeunit.Run(Codeunit::"Batch Import One Line", StagingLine) then
+                    FailedCount += 1;
+            until StagingLine.Next() = 0;
+
+        if FailedCount > 0 then
+            Message('%1 line(s) were skipped; the rest were imported.', FailedCount);
+    end;
+}
+
+codeunit 50125 "Batch Import One Line"
+{
+    TableNo = "Sales Line";
+
+    trigger OnRun()
+    begin
+        // Validation lives here. If it throws, only this line rolls back,
+        // because the caller wrapped the call in Codeunit.Run.
+        Rec.TestField("No.");
+        Rec.TestField(Quantity);
+        Rec.Insert(true);
+    end;
+}