SQSCANGHA-135 Fix scanner binaries always re-downloaded due to incompatible 4-part version (#250)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main/__tests__/utils.test.js

@@ -22,6 +22,7 @@ import {
   getPlatformFlavor,
   getScannerDownloadURL,
   scannerDirName,
+  toSemVer,
 } from "../utils.js";
 
 describe("getPlatformFlavor", () => {
@@ -97,3 +98,22 @@ describe("scannerDirName", () => {
     );
   });
 });
+
+describe("toSemVer", () => {
+  it("converts 4-part version to semver pre-release format", () => {
+    assert.equal(toSemVer("8.0.1.6346"), "8.0.1-build.6346");
+  });
+
+  it("leaves 3-part semver version unchanged", () => {
+    assert.equal(toSemVer("8.0.1"), "8.0.1");
+  });
+
+  it("leaves version with pre-release identifier unchanged", () => {
+    assert.equal(toSemVer("7.2.0-SNAPSHOT"), "7.2.0-SNAPSHOT");
+  });
+
+  it("converts different 4-part versions correctly", () => {
+    assert.equal(toSemVer("6.2.0.4584"), "6.2.0-build.4584");
+    assert.equal(toSemVer("8.1.0.6389"), "8.1.0-build.6389");
+  });
+});