Patch packs, so that they are same as shared.

Author: ilonatommy

src/ProjectTemplates/scripts/Test-Template.psm1

@@ -219,6 +219,65 @@ function Test-Template {
         Write-Warning "[dll check] Dev runtime folder not found at $devRuntimePath";
     }
 
+    # ===== PATCH REFERENCE ASSEMBLIES =====
+    Write-Verbose "=== PATCHING REFERENCE ASSEMBLIES ===";
+
+    # Find the reference pack directory
+    $packsDir = "$PSScriptRoot/.dotnet/packs/Microsoft.AspNetCore.App.Ref";
+    if (Test-Path $packsDir) {
+        Write-Verbose "Found reference packs directory: $packsDir";
+
+        # List existing reference pack versions
+        $existingRefPacks = Get-ChildItem $packsDir -ErrorAction SilentlyContinue;
+        if ($existingRefPacks) {
+            Write-Verbose "Existing reference pack versions: $($existingRefPacks.Name -join ', ')";
+
+            # Check if dev version of reference assemblies exist in the runtime zip
+            $devRefAssembliesSource = "$PSScriptRoot/.runtime/ref/Microsoft.AspNetCore.App";
+            if (Test-Path $devRefAssembliesSource) {
+                Write-Verbose "Found dev reference assemblies in runtime zip at: $devRefAssembliesSource";
+
+                # Create dev version reference pack directory
+                $devRefPackDir = "$packsDir/10.0.0-dev";
+                New-Item -Path $devRefPackDir -ItemType Directory -Force | Out-Null;
+
+                # Copy reference assemblies structure
+                Write-Verbose "Copying dev reference assemblies to: $devRefPackDir";
+                Copy-Item -Path "$devRefAssembliesSource/*" -Destination $devRefPackDir -Recurse -Force;
+
+                Write-Verbose "Successfully created dev reference pack at $devRefPackDir";
+
+                # [dll check] 5) Check reference assembly
+                $devRefDiagnosticsDll = "$devRefPackDir/ref/net10.0/Microsoft.AspNetCore.Diagnostics.dll";
+                Check-DiagnosticsDll -Path $devRefDiagnosticsDll -Description "5) Dev reference Microsoft.AspNetCore.Diagnostics.dll";
+            } else {
+                Write-Warning "No dev reference assemblies found in runtime zip - reference assemblies not patched!";
+
+                # Alternative: try to copy from the latest preview version and replace specific DLLs
+                $latestRefPack = $existingRefPacks | Sort-Object Name -Descending | Select-Object -First 1;
+                if ($latestRefPack) {
+                    Write-Verbose "Attempting to create dev reference pack based on: $($latestRefPack.Name)";
+                    $devRefPackDir = "$packsDir/10.0.0-dev";
+
+                    # Copy the latest reference pack as base
+                    Copy-Item -Path $latestRefPack.FullName -Destination $devRefPackDir -Recurse -Force;
+
+                    # Replace specific reference DLLs with runtime DLLs (not ideal but might work)
+                    $runtimeDiagnosticsDll = "$PSScriptRoot/.dotnet/shared/Microsoft.AspNetCore.App/10.0.0-dev/Microsoft.AspNetCore.Diagnostics.dll";
+                    $refDiagnosticsDll = "$devRefPackDir/ref/net10.0/Microsoft.AspNetCore.Diagnostics.dll";
+
+                    if ((Test-Path $runtimeDiagnosticsDll) -and (Test-Path (Split-Path $refDiagnosticsDll))) {
+                        Copy-Item -Path $runtimeDiagnosticsDll -Destination $refDiagnosticsDll -Force;
+                        Write-Verbose "Replaced reference Microsoft.AspNetCore.Diagnostics.dll with runtime version";
+                        Check-DiagnosticsDll -Path $refDiagnosticsDll -Description "5) Patched reference Microsoft.AspNetCore.Diagnostics.dll";
+                    }
+                }
+            }
+        }
+    } else {
+        Write-Warning "Reference packs directory not found at $packsDir";
+    }
+
     Write-Verbose "=== SETTING UP ENVIRONMENT ==="
     Write-Verbose "Setting DOTNET_ROOT to: $PSScriptRoot/.dotnet"
     $env:DOTNET_ROOT = "$PSScriptRoot/.dotnet";