SQSCANGHA-127 Rename downloaded file to .zip before extraction on Windows

PowerShell 5.1, used on some Windows GitHub Actions runners, requires
Expand-Archive to receive a file with a .zip extension. The @actions/tool-cache
downloadTool function saves to a temp path without any extension, causing
extraction to fail on PS 5.1. Rename the file to add .zip before calling
extractZip.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main/install-sonar-scanner.js

@@ -18,6 +18,7 @@
 
 import * as core from "@actions/core";
 import * as tc from "@actions/tool-cache";
+import * as fs from "node:fs/promises";
 import * as os from "node:os";
 import * as path from "node:path";
 import {
@@ -29,6 +30,15 @@ import { verifySignature } from "./gpg-verification.js";
 
 const TOOLNAME = "sonar-scanner-cli";
 
+async function ensureZipExtension(filePath) {
+  if (filePath.endsWith(".zip")) {
+    return filePath;
+  }
+  const zipPath = `${filePath}.zip`;
+  await fs.rename(filePath, zipPath);
+  return zipPath;
+}
+
 /**
  * Download the Sonar Scanner CLI for the current environment and cache it.
  */
@@ -76,7 +86,9 @@ export async function installSonarScanner({
       await verifySignature(downloadPath, signaturePath);
     }
 
-    const extractedPath = await tc.extractZip(downloadPath);
+    // PowerShell 5.1 (used on some Windows agents) requires the .zip extension for Expand-Archive
+    const extractInput = await ensureZipExtension(downloadPath);
+    const extractedPath = await tc.extractZip(extractInput);
 
     // Find the actual scanner directory inside the extracted folder
     const scannerPath = path.join(