fix: Generate Script now purges dest dirs

Author: simonmeggle

_dev/scripts/generate-all.ps1

@@ -73,6 +73,13 @@ function Generate-Item {
     $src = Join-Path $SrcBase $Name
     Write-Host "→ ${Label}\$Name"
 
+    # Purge destination to ensure idempotency
+    $dst = Join-Path $DstBase $Name
+    if (Test-Path $dst) {
+        Write-Host "  ↳ Purging $dst ..."
+        Remove-Item -Recurse -Force $dst
+    }
+
     # Inject shared README template if the example has a partial
     $sharedReadme = Join-Path $SharedDir "README.md.jinja"
     $partial = Join-Path $src "README.partial.md"

_dev/scripts/generate-all.sh

@@ -129,6 +129,12 @@ generate() {
   echo "  src: ${src_base}/${name}"
   echo "  dst: ${dst_base}/${name}"
 
+  # Purge destination to ensure idempotency
+  if [[ -d "${dst_base}/${name}" ]]; then
+    echo "  ↳ Purging ${dst_base}/${name} ..."
+    rm -rf "${dst_base}/${name}"
+  fi
+
   # Inject shared README template if the example has a partial
   local shared_readme="${SHARED_DIR}/README.md.jinja"
   local partial="${src_base}/${name}/README.partial.md"