Improve desktop runtime execution tests

Test improvements:

- Capture titles for all macOS windows, not just the frontmost.
- Incorporate missing application log files.
- Improve log clarity with enriched context.
- Improve application termination on macOS by reducing grace period.
- Ensure complete application termination on macOS.
- Validate Vue application loading through an initial log.
- Support ignoring environment-specific `stderr` errors.
- Do not fail the test if working directory cannot be deleted.
- Use retry pattern when installing dependencies due to network errors.

Refactorings:

- Migrate the test code to TypeScript.
- Replace deprecated `rmdir` with `rm` for error-resistant directory
  removal.
- Improve sanity checking by shifting from App.vue to Vue bootstrapper.
- Centralize environment variable management with `EnvironmentVariables`
  construct.
- Rename infrastructure/Environment to RuntimeEnvironment for clarity.
- Isolate WindowVariables and SystemOperations from RuntimeEnvironment.
- Inject logging via preloader.
- Correct mislabeled RuntimeSanity tests.

Configuration:

- Introduce `npm run check:desktop` for simplified execution.
- Omit `console.log` override due to `nodeIntegration` restrictions and
  reveal logging functionality using context-bridging.

scripts/check-desktop-runtime-errors/utils/platform.ts

@@ -0,0 +1,31 @@
+import { platform } from 'os';
+import { die } from './log';
+
+export enum SupportedPlatform {
+  macOS,
+  Windows,
+  Linux,
+}
+
+const NODE_PLATFORM_MAPPINGS: {
+  readonly [K in SupportedPlatform]: NodeJS.Platform;
+} = {
+  [SupportedPlatform.macOS]: 'darwin',
+  [SupportedPlatform.Linux]: 'linux',
+  [SupportedPlatform.Windows]: 'win32',
+};
+
+function findCurrentPlatform(): SupportedPlatform | undefined {
+  const nodePlatform = platform();
+
+  for (const key of Object.keys(NODE_PLATFORM_MAPPINGS)) {
+    const keyAsSupportedPlatform = parseInt(key, 10) as SupportedPlatform;
+    if (NODE_PLATFORM_MAPPINGS[keyAsSupportedPlatform] === nodePlatform) {
+      return keyAsSupportedPlatform;
+    }
+  }
+
+  return die(`Unsupported platform: ${nodePlatform}`);
+}
+
+export const CURRENT_PLATFORM: SupportedPlatform = findCurrentPlatform();