Make Windows prebuilt bench optional

install.ps1

@@ -379,12 +379,14 @@ function Install-Prebuilt {
         Verify-ArchiveChecksum $url $zip
         Expand-Archive -Force -Path $zip -DestinationPath $extract
         Verify-ArchiveVersion $extract $url
-        foreach ($bin in @("dosh-client.exe", "dosh-bench.exe")) {
-            $found = Get-ChildItem -Path $extract -Recurse -File -Filter $bin | Select-Object -First 1
-            if (-not $found) {
-                throw "prebuilt archive missing $bin"
-            }
-            Install-Binary $found.FullName (Join-Path $bindir $bin)
+        $client = Get-ChildItem -Path $extract -Recurse -File -Filter "dosh-client.exe" | Select-Object -First 1
+        if (-not $client) {
+            throw "prebuilt archive missing dosh-client.exe"
+        }
+        Install-Binary $client.FullName (Join-Path $bindir "dosh-client.exe")
+        $bench = Get-ChildItem -Path $extract -Recurse -File -Filter "dosh-bench.exe" | Select-Object -First 1
+        if ($bench) {
+            Install-Binary $bench.FullName (Join-Path $bindir "dosh-bench.exe")
         }
         Install-Binary (Join-Path $bindir "dosh-client.exe") (Join-Path $bindir "dosh.exe")
         return $true

tests/release_scripts.rs

@@ -230,6 +230,21 @@ fn windows_source_fallback_builds_client_only_like_unix() {
     assert!(ps1.contains("if (Test-Path \"target\\release\\dosh-bench.exe\")"));
 }
 
+#[test]
+fn windows_prebuilt_install_requires_client_but_not_bench() {
+    let install = include_str!("../install.sh");
+    let ps1 = include_str!("../install.ps1");
+    assert!(install.contains("install_extracted_binary \"$tmpdir/extract\" dosh-client"));
+    assert!(install.contains("if found_bench=\"$(find_extracted_binary"));
+    assert!(ps1.contains("throw \"prebuilt archive missing dosh-client.exe\""));
+    assert!(ps1.contains("-Filter \"dosh-bench.exe\""));
+    assert!(ps1.contains("if ($bench)"));
+    assert!(
+        !ps1.contains("throw \"prebuilt archive missing dosh-bench.exe\""),
+        "Windows prebuilt install should not fall back to source just because dosh-bench is absent"
+    );
+}
+
 #[test]
 fn windows_installer_adds_user_path_idempotently() {
     let ps1 = include_str!("../install.ps1");