Add 18 more community AL/BC patterns across appsource, data-modeling, error-handling, security, style, testing, ui, upgrade, and web-services

Second contribution from CURABIS ApS, generalized from patterns observed across real AppSource/PTE development. Cross-checked against the current microsoft/knowledge corpus before opening; several originally-drafted candidates were dropped as duplicates of existing files.

microsoft/knowledge/testing/bcpt-scenarios-must-be-app-specific.good.al

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+codeunit 50100 "BCPT Create Service Request" implements "BCPT Test Param. Provider"
+{
+    SingleInstance = true;
+
+    trigger OnRun()
+    begin
+        if not IsInitialized then begin
+            InitTest();
+            IsInitialized := true;
+        end;
+        CreateServiceRequest(GlobalBCPTTestContext);
+    end;
+
+    var
+        GlobalBCPTTestContext: Codeunit "BCPT Test Context";
+        IsInitialized: Boolean;
+
+    local procedure InitTest()
+    begin
+        // Set up any required configuration
+    end;
+
+    local procedure CreateServiceRequest(var BCPTTestContext: Codeunit "BCPT Test Context")
+    begin
+        BCPTTestContext.StartScenario('Create Service Request Header');
+        // ... create the service request
+        BCPTTestContext.EndScenario('Create Service Request Header');
+        BCPTTestContext.UserWait();
+
+        BCPTTestContext.StartScenario('Add Service Request Line');
+        // ... add a line
+        BCPTTestContext.EndScenario('Add Service Request Line');
+    end;
+
+    procedure GetDefaultParameters(): Text[1000]
+    begin
+        exit('');
+    end;
+
+    procedure ValidateParameters(Parameters: Text[1000])
+    begin
+    end;
+}