fix(tests): correct Help test variable names and remove duplicate changelog path line

- Use $commandParameterNames (not undefined $parameterNames) in the
  help-parameter-in-code assertion
- Populate $helpParameterNames in BeforeDiscovery so Context -ForEach
  actually iterates during discovery (was silently empty with BeforeAll)
- Remove duplicate $changelogPath assignment that used the wrong -Child alias

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: HeyItsGilbert

Tests/Help.tests.ps1

@@ -42,6 +42,8 @@ Describe "Test help for <_.Name>" -ForEach $commands {
         $commandHelp = Get-Help $command.Name -ErrorAction SilentlyContinue
         $commandParameters = global:FilterOutCommonParams -Params $command.ParameterSets.Parameters
         $commandParameterNames = $commandParameters.Name
+        $helpParameters = global:FilterOutCommonParams -Params $commandHelp.Parameters.Parameter
+        $helpParameterNames = $helpParameters.Name
         # $helpLinks             = $commandHelp.relatedLinks.navigationLink.uri
     }
 
@@ -110,7 +112,7 @@ Describe "Test help for <_.Name>" -ForEach $commands {
 
         # Shouldn't find extra parameters in help.
         It "finds help parameter in code: <_>" {
-            $_ -in $parameterNames | Should -Be $true
+            $_ -in $commandParameterNames | Should -Be $true
         }
     }
 }

Tests/Manifest.tests.ps1

@@ -10,7 +10,6 @@ BeforeAll {
     $outputManifestPath = Join-Path -Path $outputModVerDir -Child "$($moduleName).psd1"
     $manifestData = Test-ModuleManifest -Path $outputManifestPath -Verbose:$false -ErrorAction Stop -WarningAction SilentlyContinue
 
-    $changelogPath = Join-Path -Path $env:BHProjectPath -Child 'CHANGELOG.md'
     $changelogPath = Join-Path -Path $env:BHProjectPath -ChildPath 'CHANGELOG.md'
     $changelogLine = Get-Content -Path $changelogPath | Where-Object { $_ -match "^##\s\[(?<Version>(\d+\.){1,3}\d+)\]" } | Select-Object -First 1
     $changelogVersion = if ($changelogLine -and ($changelogLine -match "^##\s\[(?<Version>(\d+\.){1,3}\d+)\]")) { $matches.Version } else { $null }