test: cut low-value tests, rewrite the rest around behavior, parallelize lanes (#285)

src/main/runtime/update/app-updater.test.ts

@@ -3,7 +3,6 @@ import assert from 'node:assert/strict';
 import {
   configureAutoUpdater,
   createElectronAppUpdater,
-  isKnownLinuxPackageManagedAppImage,
   isNativeUpdaterSupported,
   resolveMacAppBundlePath,
   type ElectronAutoUpdaterLike,
@@ -308,14 +307,6 @@ test('linux native updater is unsupported for package-managed AppImage installs'
   ]);
 });
 
-test('known Linux package-managed AppImage detection follows the canonical AUR path', () => {
-  assert.equal(isKnownLinuxPackageManagedAppImage('/opt/SubMiner/SubMiner.AppImage'), true);
-  assert.equal(
-    isKnownLinuxPackageManagedAppImage('/home/tester/.local/bin/SubMiner.AppImage'),
-    false,
-  );
-});
-
 test('windows native updater is supported for packaged builds', async () => {
   const supported = await isNativeUpdaterSupported({
     platform: 'win32',