Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

devops/scripts/fix-duplicate-using-testkit.ps1

@@ -0,0 +1,55 @@
+# Fix duplicate "using StellaOps.TestKit;" statements in C# files
+# The pattern shows files have this statement both at top (correct) and in middle (wrong)
+# This script removes all occurrences AFTER the first one
+
+$ErrorActionPreference = "Stop"
+
+$srcPath = Join-Path $PSScriptRoot "..\..\src"
+$pattern = "using StellaOps.TestKit;"
+
+# Find all .cs files containing the pattern
+$files = Get-ChildItem -Path $srcPath -Recurse -Filter "*.cs" |
+    Where-Object { (Get-Content $_.FullName -Raw) -match [regex]::Escape($pattern) }
+
+Write-Host "Found $($files.Count) files with 'using StellaOps.TestKit;'" -ForegroundColor Cyan
+
+$fixedCount = 0
+$errorCount = 0
+
+foreach ($file in $files) {
+    try {
+        $lines = Get-Content $file.FullName
+        $newLines = @()
+        $foundFirst = $false
+        $removedAny = $false
+
+        foreach ($line in $lines) {
+            if ($line.Trim() -eq $pattern) {
+                if (-not $foundFirst) {
+                    # Keep the first occurrence
+                    $newLines += $line
+                    $foundFirst = $true
+                } else {
+                    # Skip subsequent occurrences
+                    $removedAny = $true
+                }
+            } else {
+                $newLines += $line
+            }
+        }
+
+        if ($removedAny) {
+            $newLines | Set-Content -Path $file.FullName -Encoding UTF8
+            Write-Host "Fixed: $($file.Name)" -ForegroundColor Green
+            $fixedCount++
+        }
+    } catch {
+        Write-Host "Error processing $($file.FullName): $_" -ForegroundColor Red
+        $errorCount++
+    }
+}
+
+Write-Host ""
+Write-Host "Summary:" -ForegroundColor Cyan
+Write-Host "  Files fixed: $fixedCount" -ForegroundColor Green
+Write-Host "  Errors: $errorCount" -ForegroundColor $(if ($errorCount -gt 0) { "Red" } else { "Green" })