diff --git a/.gitattributes b/.gitattributes
index df492b0..5a3d63b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,10 @@
+# Normalize line endings to LF in both the repo and the working tree, regardless of
+# the contributor's global core.autocrlf setting. PowerShell on Windows handles LF
+# fine, and the devcontainer runs Linux. Without this, Windows clones with
+# core.autocrlf=true emit "LF will be replaced by CRLF the next time Git touches it"
+# warnings on every commit when files are edited by tooling that writes LF (most
+# editors and AI agents do).
+* text=auto eol=lf
+
 # The docs are generated by the build script and should be considered artifacts
 docs/en-US/* linguist-generated
diff --git a/build.ps1 b/build.ps1
index 8887f8f..c76be82 100644
--- a/build.ps1
+++ b/build.ps1
@@ -40,6 +40,7 @@ param(
                 @()
             }
         })]
+    [ValidateNotNullOrEmpty()]
     [string[]]$Task = 'default',
 
     # Bootstrap dependencies
diff --git a/tests/Help.tests.ps1 b/tests/Help.tests.ps1
index 4f1a16c..ea99c57 100644
--- a/tests/Help.tests.ps1
+++ b/tests/Help.tests.ps1
@@ -57,10 +57,10 @@ BeforeDiscovery {
     }
 
     # PowerShellBuild outputs to Output/<ModuleName>/<Version>/, override BHBuildOutput
-    $projectRoot = Split-Path -Parent $PSScriptRoot
-    $sourceManifest = Join-Path $projectRoot "$Env:BHProjectName/$Env:BHProjectName.psd1"
+    $projectRoot = Split-Path -Path $PSScriptRoot -Parent
+    $sourceManifest = Join-Path -Path $projectRoot -ChildPath "$Env:BHProjectName/$Env:BHProjectName.psd1"
     $moduleVersion = (Import-PowerShellDataFile -Path $sourceManifest).ModuleVersion
-    $Env:BHBuildOutput = Join-Path $projectRoot "Output/$Env:BHProjectName/$moduleVersion"
+    $Env:BHBuildOutput = Join-Path -Path $projectRoot -ChildPath "Output/$Env:BHProjectName/$moduleVersion"
 
     # Define the path to the module manifest
     $moduleManifestFilename = $Env:BHProjectName + '.psd1'
@@ -72,18 +72,18 @@ BeforeDiscovery {
         'Classes'
     ) | ForEach-Object {
         $path = Join-Path -Path $Env:BHBuildOutput -ChildPath $_
-        if (Test-Path $path) {
+        if (Test-Path -Path $path) {
             $global:CustomTypes += (Get-ChildItem -Path $path -Recurse -ErrorAction 'SilentlyContinue').BaseName
         }
     }
 
     # Remove all versions of the module from the session. Pester can't handle multiple versions.
-    Get-Module $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
+    Get-Module -Name $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
     Import-Module -Name $moduleManifestPath -Verbose:$false -ErrorAction 'Stop'
 
     # Get module commands
     $getCommandParameters = @{
-        Module      = (Get-Module $Env:BHProjectName)
+        Module      = (Get-Module -Name $Env:BHProjectName)
         CommandType = [System.Management.Automation.CommandTypes[]]'Cmdlet, Function' # Not alias
     }
     if ($PSVersionTable.PSVersion.Major -lt 6) {
diff --git a/tests/Manifest.tests.ps1 b/tests/Manifest.tests.ps1
index fe6e3f6..0762051 100644
--- a/tests/Manifest.tests.ps1
+++ b/tests/Manifest.tests.ps1
@@ -69,10 +69,10 @@ BeforeDiscovery {
     }
 
     # PowerShellBuild outputs to Output/<ModuleName>/<Version>/, override BHBuildOutput
-    $projectRoot = Split-Path -Parent $PSScriptRoot
-    $sourceManifest = Join-Path $projectRoot "$Env:BHProjectName/$Env:BHProjectName.psd1"
+    $projectRoot = Split-Path -Path $PSScriptRoot -Parent
+    $sourceManifest = Join-Path -Path $projectRoot -ChildPath "$Env:BHProjectName/$Env:BHProjectName.psd1"
     $moduleVersion = (Import-PowerShellDataFile -Path $sourceManifest).ModuleVersion
-    $Env:BHBuildOutput = Join-Path $projectRoot "Output/$Env:BHProjectName/$moduleVersion"
+    $Env:BHBuildOutput = Join-Path -Path $projectRoot -ChildPath "Output/$Env:BHProjectName/$moduleVersion"
 
     # Define the path to the module manifest
     $moduleManifestFilename = $Env:BHProjectName + '.psd1'
@@ -108,10 +108,10 @@ BeforeAll {
     }
 
     # PowerShellBuild outputs to Output/<ModuleName>/<Version>/, override BHBuildOutput
-    $projectRoot = Split-Path -Parent $PSScriptRoot
-    $sourceManifest = Join-Path $projectRoot "$Env:BHProjectName/$Env:BHProjectName.psd1"
+    $projectRoot = Split-Path -Path $PSScriptRoot -Parent
+    $sourceManifest = Join-Path -Path $projectRoot -ChildPath "$Env:BHProjectName/$Env:BHProjectName.psd1"
     $moduleVersion = (Import-PowerShellDataFile -Path $sourceManifest).ModuleVersion
-    $Env:BHBuildOutput = Join-Path $projectRoot "Output/$Env:BHProjectName/$moduleVersion"
+    $Env:BHBuildOutput = Join-Path -Path $projectRoot -ChildPath "Output/$Env:BHProjectName/$moduleVersion"
 
     # Define the path to the module manifest
     $moduleManifestFilename = $Env:BHProjectName + '.psd1'
@@ -135,12 +135,12 @@ BeforeAll {
     Import-Module -Name (Join-Path -Path $PSScriptRoot -ChildPath 'ManifestHelpers.psm1') -Verbose:$false -Force
 
     $requirementsPath = Join-Path -Path $env:BHProjectPath -ChildPath 'requirements.psd1'
-    $requirements = Import-PowerShellDataFile -Path $requirementsPath -ErrorAction Stop
+    $requirements = Import-PowerShellDataFile -Path $requirementsPath -ErrorAction 'Stop'
 
     # Parse the version from the changelog
     $changelogPath = Join-Path -Path $Env:BHProjectPath -ChildPath 'CHANGELOG.md'
     $changelogVersionPattern = '^##\s\\?\[(?<Version>(\d+\.){1,3}\d+)\\?\]' # Matches on a line that starts with '## [Version]' or '## \[Version\]'
-    $changelogVersion = Get-Content $changelogPath | ForEach-Object {
+    $changelogVersion = Get-Content -Path $changelogPath | ForEach-Object {
         if ($_ -match $changelogVersionPattern) {
             $changelogVersion = $matches.Version
             break
diff --git a/tests/ManifestHelpers.psm1 b/tests/ManifestHelpers.psm1
index b797866..533824b 100644
--- a/tests/ManifestHelpers.psm1
+++ b/tests/ManifestHelpers.psm1
@@ -36,13 +36,10 @@ function Split-SemVerString {
     [OutputType([hashtable])]
     param(
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$VersionString
     )
 
-    if ([string]::IsNullOrEmpty($VersionString)) {
-        throw "VersionString cannot be empty or null"
-    }
-
     # Strip build metadata per SemVer 2.0.0 — it does not affect precedence and is
     # not valid for [System.Version], so it must be removed before further parsing.
     $coreVersion = ($VersionString -split '\+', 2)[0]
@@ -92,9 +89,11 @@ function Compare-SemVerPrerelease {
     [OutputType([int])]
     param(
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$FirstPrerelease,
 
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$SecondPrerelease
     )
 
@@ -208,6 +207,7 @@ function Test-VersionComparison {
     [OutputType([bool])]
     param(
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$FirstVersion,
 
         [Parameter(Mandatory = $false)]
@@ -215,6 +215,7 @@ function Test-VersionComparison {
         [string]$FirstPrerelease,
 
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$SecondVersion,
 
         [Parameter(Mandatory = $false)]
@@ -325,9 +326,11 @@ function Test-VersionConstraint {
     [OutputType([bool])]
     param(
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$ManifestVersion,
 
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$RequirementsVersion,
 
         [Parameter(Mandatory = $true)]
@@ -337,14 +340,14 @@ function Test-VersionConstraint {
 
     # Validate input versions are not empty
     if ([string]::IsNullOrWhiteSpace($ManifestVersion)) {
-        throw "ManifestVersion cannot be empty or whitespace"
+        throw 'ManifestVersion cannot be empty or whitespace'
     }
     if ([string]::IsNullOrWhiteSpace($RequirementsVersion)) {
-        throw "RequirementsVersion cannot be empty or whitespace"
+        throw 'RequirementsVersion cannot be empty or whitespace'
     }
 
-    $manifestParts = Split-SemVerString $ManifestVersion
-    $requirementsParts = Split-SemVerString $RequirementsVersion
+    $manifestParts = Split-SemVerString -VersionString $ManifestVersion
+    $requirementsParts = Split-SemVerString -VersionString $RequirementsVersion
 
     $comparisonParameters = @{
         FirstVersion     = $requirementsParts.Version
diff --git a/tests/Meta.tests.ps1 b/tests/Meta.tests.ps1
index 68298f0..c1813ec 100644
--- a/tests/Meta.tests.ps1
+++ b/tests/Meta.tests.ps1
@@ -9,11 +9,11 @@ BeforeAll {
         $projectRoot = $PSScriptRoot
     }
 
-    $allTextFiles      = Get-TextFilesList $projectRoot
+    $allTextFiles      = Get-TextFilesList -Root $projectRoot
     $unicodeFilesCount = 0
     $totalTabsCount    = 0
     foreach ($textFile in $allTextFiles) {
-        if (Test-FileUnicode $textFile) {
+        if (Test-FileUnicode -FileInfo $textFile) {
             $unicodeFilesCount++
             Write-Warning (
                 "File $($textFile.FullName) contains 0x00 bytes." +
@@ -24,7 +24,7 @@ BeforeAll {
         $unicodeFilesCount | Should -Be 0
 
         $fileName = $textFile.FullName
-        (Get-Content $fileName -Raw) | Select-String "`t" | Foreach-Object {
+        (Get-Content -Path $fileName -Raw) | Select-String -Pattern "`t" | Foreach-Object {
             Write-Warning (
                 "There are tabs in $fileName." +
                 ' Use Fixer "Get-TextFilesList `$pwd | ConvertTo-SpaceIndentation".'
diff --git a/tests/MetaFixers.psm1 b/tests/MetaFixers.psm1
index 7dec0c8..43da225 100644
--- a/tests/MetaFixers.psm1
+++ b/tests/MetaFixers.psm1
@@ -27,6 +27,7 @@ function ConvertTo-UTF8 {
     [OutputType([void])]
     param(
         [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
+        [ValidateNotNull()]
         [System.IO.FileInfo]$FileInfo
     )
 
@@ -56,6 +57,7 @@ function ConvertTo-SpaceIndentation {
     [OutputType([void])]
     param(
         [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
+        [ValidateNotNull()]
         [System.IO.FileInfo]$FileInfo
     )
 
@@ -85,6 +87,7 @@ function Get-TextFilesList {
     [OutputType([System.IO.FileInfo])]
     param(
         [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$Root
     )
 
@@ -159,10 +162,11 @@ function Get-UnicodeFilesList {
     [OutputType([System.IO.FileInfo])]
     param(
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$Root
     )
 
     $root | Get-TextFilesList | Where-Object {
-        Test-FileUnicode $_
+        Test-FileUnicode -FileInfo $_
     }
 }
diff --git a/tests/Unit/Private/Invoke-{{Prefix}}Helper.tests.ps1 b/tests/Unit/Private/Invoke-{{Prefix}}Helper.tests.ps1
index e4879ca..250662c 100644
--- a/tests/Unit/Private/Invoke-{{Prefix}}Helper.tests.ps1
+++ b/tests/Unit/Private/Invoke-{{Prefix}}Helper.tests.ps1
@@ -17,20 +17,20 @@ BeforeDiscovery {
     }
 
     # PowerShellBuild outputs to Output/<ModuleName>/<Version>/
-    $projectRoot = Split-Path -Parent (Split-Path -Parent (Split-Path -Parent $PSScriptRoot))
-    $sourceManifest = Join-Path $projectRoot "$Env:BHProjectName/$Env:BHProjectName.psd1"
+    $projectRoot = Split-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -Parent
+    $sourceManifest = Join-Path -Path $projectRoot -ChildPath "$Env:BHProjectName/$Env:BHProjectName.psd1"
     $moduleVersion = (Import-PowerShellDataFile -Path $sourceManifest).ModuleVersion
-    $Env:BHBuildOutput = Join-Path $projectRoot "Output/$Env:BHProjectName/$moduleVersion"
+    $Env:BHBuildOutput = Join-Path -Path $projectRoot -ChildPath "Output/$Env:BHProjectName/$moduleVersion"
 }
 
 BeforeAll {
     # Import the module from the build output
     $moduleManifestPath = Join-Path -Path $Env:BHBuildOutput -ChildPath "$Env:BHProjectName.psd1"
-    Get-Module $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
+    Get-Module -Name $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
     Import-Module -Name $moduleManifestPath -Force -ErrorAction 'Stop'
 }
 
-InModuleScope $Env:BHProjectName {
+InModuleScope -ModuleName $Env:BHProjectName -ScriptBlock {
     Describe 'Invoke-{{Prefix}}Helper' {
 
         Context 'Basic functionality' {
diff --git a/tests/Unit/Public/Get-{{Prefix}}Example.tests.ps1 b/tests/Unit/Public/Get-{{Prefix}}Example.tests.ps1
index 47fdbc0..051affa 100644
--- a/tests/Unit/Public/Get-{{Prefix}}Example.tests.ps1
+++ b/tests/Unit/Public/Get-{{Prefix}}Example.tests.ps1
@@ -17,16 +17,16 @@ BeforeDiscovery {
     }
 
     # PowerShellBuild outputs to Output/<ModuleName>/<Version>/
-    $projectRoot = Split-Path -Parent (Split-Path -Parent (Split-Path -Parent $PSScriptRoot))
-    $sourceManifest = Join-Path $projectRoot "$Env:BHProjectName/$Env:BHProjectName.psd1"
+    $projectRoot = Split-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -Parent
+    $sourceManifest = Join-Path -Path $projectRoot -ChildPath "$Env:BHProjectName/$Env:BHProjectName.psd1"
     $moduleVersion = (Import-PowerShellDataFile -Path $sourceManifest).ModuleVersion
-    $Env:BHBuildOutput = Join-Path $projectRoot "Output/$Env:BHProjectName/$moduleVersion"
+    $Env:BHBuildOutput = Join-Path -Path $projectRoot -ChildPath "Output/$Env:BHProjectName/$moduleVersion"
 }
 
 BeforeAll {
     # Import the module from the build output
     $moduleManifestPath = Join-Path -Path $Env:BHBuildOutput -ChildPath "$Env:BHProjectName.psd1"
-    Get-Module $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
+    Get-Module -Name $Env:BHProjectName | Remove-Module -Force -ErrorAction 'Ignore'
     Import-Module -Name $moduleManifestPath -Force -ErrorAction 'Stop'
 }
 
diff --git a/{{ModuleName}}/Public/Get-{{Prefix}}Example.ps1 b/{{ModuleName}}/Public/Get-{{Prefix}}Example.ps1
index ea095b9..e3879fd 100644
--- a/{{ModuleName}}/Public/Get-{{Prefix}}Example.ps1
+++ b/{{ModuleName}}/Public/Get-{{Prefix}}Example.ps1
@@ -37,7 +37,7 @@ function Get-{{Prefix}}Example {
     )
 
     begin {
-        Write-Verbose "Starting Get-{{Prefix}}Example"
+        Write-Verbose 'Starting Get-{{Prefix}}Example'
     }
 
     process {
@@ -51,6 +51,6 @@ function Get-{{Prefix}}Example {
     }
 
     end {
-        Write-Verbose "Completed Get-{{Prefix}}Example"
+        Write-Verbose 'Completed Get-{{Prefix}}Example'
     }
 }