fix(#260): improve run.ps1 script content handling in tests

- resolve script path and load content once for efficiency
- update test assertions to use loaded script content

Author: stiwicourage

tests/RunQualityLoop.Tests.ps1

@@ -1,17 +1,17 @@
 BeforeAll {
     $script:repoRoot = Split-Path -Parent $PSScriptRoot
-    $script:runScriptPath = Join-Path $script:repoRoot 'run.ps1'
+    $script:runScriptPath = (Resolve-Path -LiteralPath (Join-Path $script:repoRoot 'run.ps1')).Path
+    $script:runScriptContent = Get-Content -LiteralPath $script:runScriptPath -Raw -ErrorAction Stop
 }
 
 Describe 'run.ps1 quality loop' {
     It 'runs Invoke-NovaTest and Test-NovaBuild through fresh child pwsh sessions' {
-        $content = Get-Content -LiteralPath $script:runScriptPath -Raw
+        $script:runScriptContent | Should -Not -BeNullOrEmpty
 
-        $content.Contains('function Invoke-NovaFreshValidationCommand') | Should -BeTrue
-        $content.Contains('& pwsh -NoLogo -NoProfile -Command $Command') | Should -BeTrue
-        $content.Contains('Invoke-NovaFreshValidationCommand -Command "Import-Module ''$builtModulePath'' -Force -ErrorAction Stop; Invoke-NovaTest"') | Should -BeTrue
-        $content.Contains('Invoke-NovaFreshValidationCommand -Command "Import-Module ''$builtModulePath'' -Force -ErrorAction Stop; Test-NovaBuild"') | Should -BeTrue
+        $script:runScriptContent.Contains('function Invoke-NovaFreshValidationCommand') | Should -BeTrue
+        $script:runScriptContent.Contains('& pwsh -NoLogo -NoProfile -Command $Command') | Should -BeTrue
+        $script:runScriptContent.Contains('Invoke-NovaFreshValidationCommand -Command "Import-Module ''$builtModulePath'' -Force -ErrorAction Stop; Invoke-NovaTest"') | Should -BeTrue
+        $script:runScriptContent.Contains('Invoke-NovaFreshValidationCommand -Command "Import-Module ''$builtModulePath'' -Force -ErrorAction Stop; Test-NovaBuild"') | Should -BeTrue
     }
 }
 
-