Upload trx files to llm artifacts

Author: benbp

eng/pipelines/templates/stages/archetype-sdk-tool-dotnet.yml

@@ -164,6 +164,14 @@ extends:
                 name: ${{ test.Pool }}
                 os: ${{ test.Os }}
 
+              templateContext:
+                outputs:
+                  - output: pipelineArtifact
+                    targetPath: '$(Build.ArtifactStagingDirectory)/llm-artifacts'
+                    artifactName: "LLM Artifacts - $(System.JobName) - $(System.JobAttempt)"
+                    condition: eq(variables['uploadLlmArtifacts'], 'true')
+                    sbomEnabled: false
+
               steps:
                 - template: /eng/pipelines/templates/steps/install-dotnet.yml
 
@@ -187,6 +195,8 @@ extends:
                     testResultsFormat: 'VSTest'
                     mergeTestResults: true
 
+                - template: /eng/pipelines/templates/steps/upload-llm-artifacts.yml
+
           - ${{ if not(eq(length(parameters.DockerDeployments), 0)) }}:
             - template: /eng/pipelines/publish-docker-image-isolated.yml
               parameters:

eng/pipelines/templates/steps/upload-llm-artifacts.yml

@@ -0,0 +1,31 @@
+# This template serves as a place to upload artifacts intended to be used by LLMs
+# that handle data from the pipeline (for example github copilot).
+
+steps:
+  - pwsh: |
+      $artifactsDirectory = "$(Build.ArtifactStagingDirectory)/llm-artifacts"
+      New-Item $artifactsDirectory -ItemType directory -Force
+
+      Write-Host "================="
+      Get-ChildItem -Path $(TestTargetFramework)*.trx -Recurse -File
+      Write-Host "================="
+
+      # Results File: D:\a\_work\1\s\tools\azsdk-cli\Azure.Sdk.Tools.Cli.Tests\TestResults\cloudtest_c199fa1ec000015_2025-07-11_19_03_59.trx
+
+      foreach($testResultsFile in (Get-ChildItem -Path $(TestTargetFramework)*.trx -Recurse -File))
+      {
+        $fileFullName = $testResultsFile.FullName
+
+        # Convert a path like
+        #   /mnt/vss/_work/1/s/sdk/template/Azure.Template/tests/TestResults/net8.0.trx
+        # to
+        #   template-Azure.Template-net8.0.trx
+        $serviceAndPackage = ($fileFullName -split '[\\/]tools[\\/]|[\\/]TestResults')[1] -replace '[\\/]', '-'
+        $trxFile     = Split-Path $fileFullName -Leaf
+        $fileName  = "$serviceAndPackage-$trxFile"
+
+        Move-Item -Path $fileFullName -Destination "$artifactsDirectory/$fileName" -ErrorAction Continue
+        Write-Host "##vso[task.setvariable variable=uploadLlmArtifacts]true"
+      }
+    condition: succeededOrFailed()
+    displayName: Copy test results files to llm artifacts staging directory