Sync eng/common directory with azure-sdk-tools for PR 12483 (Azure#3193)

Sync eng/common directory with azure-sdk-tools for PR
Azure/azure-sdk-tools#12483 See [eng/common
workflow](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/README.md#workflow)

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: JoshLove-msft <[email protected]>

Author: 3 people

eng/common/pipelines/templates/archetype-typespec-emitter.yml

@@ -142,12 +142,34 @@ extends:
             # Create emitter identifier from package path for disambiguation
             $emitterIdentifier = ""
             if (-not [string]::IsNullOrWhiteSpace($emitterPackagePath)) {
-              # Extract filename without extension and make it safe for branch names
-              $emitterIdentifier = [System.IO.Path]::GetFileNameWithoutExtension($emitterPackagePath)
-              # Replace any characters that aren't alphanumeric, hyphens, or underscores
-              $emitterIdentifier = $emitterIdentifier -replace '[^a-zA-Z0-9\-_]', '-'
-              # Remove any leading/trailing hyphens and convert to lowercase
+              # Resolve emitterPackagePath to absolute path (it's relative to repo root)
+              # EmitterPackagePath is a directory, so append package.json
+              $absoluteEmitterPackagePath = Join-Path '$(Build.SourcesDirectory)' $emitterPackagePath
+              $packageJsonPath = Join-Path $absoluteEmitterPackagePath 'package.json'
+              
+              # Read the package name from package.json
+              if (Test-Path $packageJsonPath) {
+                try {
+                  $packageJson = Get-Content $packageJsonPath -Raw | ConvertFrom-Json
+                  if ($packageJson.name) {
+                    $emitterIdentifier = $packageJson.name
+                  }
+                } catch {
+                  Write-Host "Warning: Could not read package name from $packageJsonPath"
+                }
+              }
+              
+              # If we still don't have an identifier, fall back to filename
+              if ([string]::IsNullOrWhiteSpace($emitterIdentifier)) {
+                Write-Host "Warning: Could not read emitter name from package.json, falling back to package path"
+                $emitterIdentifier = [System.IO.Path]::GetFileNameWithoutExtension($emitterPackagePath)
+              }
+              
+              # Clean up the identifier: remove @ prefix, replace invalid chars
+              $emitterIdentifier = $emitterIdentifier -replace '^@', ''
+              $emitterIdentifier = $emitterIdentifier -replace '[^a-zA-Z0-9\-_/]', '-'
               $emitterIdentifier = $emitterIdentifier.Trim('-').ToLower()
+              
               if (-not [string]::IsNullOrWhiteSpace($emitterIdentifier)) {
                 $emitterIdentifier = "-$emitterIdentifier"
               }
@@ -163,6 +185,8 @@ extends:
 
             Write-Host "Setting variable 'branchName' to '$branchName'"
             Write-Host "##vso[task.setvariable variable=branchName;isOutput=true]$branchName"
+            Write-Host "Setting variable 'emitterIdentifier' to '$emitterIdentifier'"
+            Write-Host "##vso[task.setvariable variable=emitterIdentifier;isOutput=true]$emitterIdentifier"
           displayName: Set branch name
           name: set_branch_name
 
@@ -383,15 +407,18 @@ extends:
           displayName: Create PR
           dependsOn: 
           - Generate
+          condition: succeededOrFailed()
           variables:
             generateJobResult: $[dependencies.Generate.result]
             emitterVersion: $[stageDependencies.Build.Build.outputs['initialize.emitterVersion']]
+            emitterIdentifier: $[stageDependencies.Build.Build.outputs['set_branch_name.emitterIdentifier']]
           steps:
           - template: /eng/common/pipelines/templates/steps/sparse-checkout.yml
 
           - pwsh: |
               $generateJobResult = '$(generateJobResult)'
               $emitterVersion = '$(emitterVersion)'
+              $emitterIdentifier = '$(emitterIdentifier)'
               $collectionUri = '$(System.CollectionUri)'
               $project = '$(System.TeamProject)'
               $definitionName = '$(Build.DefinitionName)'
@@ -403,6 +430,12 @@ extends:
               $buildNumber = '$(Build.BuildNumber)'
               $preRelease = '${{ parameters.BuildPrereleaseVersion }}' -eq 'true'
               
+              # Use emitterIdentifier for PR title (remove leading dash if present)
+              $emitterName = "TypeSpec emitter"
+              if (-not [string]::IsNullOrWhiteSpace($emitterIdentifier)) {
+                $emitterName = $emitterIdentifier.TrimStart('-')
+              }
+              
               $prBody = "Generated by $definitionName build [$buildNumber]($collectionUri/$project/_build/results?buildId=$buildId)<br/>"
 
               if ($sourceBranch -match "^refs/heads/(.+)$") {
@@ -419,9 +452,9 @@ extends:
                 $prTitle = "Scheduled code regeneration test"
               } else {
                 if ($preRelease) {
-                  $prTitle = "Update TypeSpec emitter version to prerelease $emitterVersion"
+                  $prTitle = "Update $emitterName version to prerelease $emitterVersion"
                 } else {
-                  $prTitle = "Update TypeSpec emitter version to $emitterVersion"
+                  $prTitle = "Update $emitterName version to $emitterVersion"
                 }
 
                 if ($generateJobResult -ne 'Succeeded') {
@@ -446,7 +479,8 @@ extends:
                 Write-Error "Build.Repository.Name not in the expected {Owner}/{Name} format"
               }
 
-              $openAsDraft = -not ($reason -eq 'IndividualCI' -and $sourceBranch -eq 'refs/heads/main')
+              # Open PR as draft if generation failed, or if it's not an IndividualCI build from main
+              $openAsDraft = ($generateJobResult -ne 'Succeeded') -or (-not ($reason -eq 'IndividualCI' -and $sourceBranch -eq 'refs/heads/main'))
               Write-Host "Setting OpenAsDraftBool = $openAsDraft"
               Write-Host "##vso[task.setvariable variable=OpenAsDraft]$openAsDraft"
               if ($openAsDraft) {