Fix Windows artifact naming in desktop packaging

- Fix the naming convention in Electron output to align with previous
  artifact naming to not break external/internal URLs.
- In desktop execution tests, make artifact locator logic stricter to
  test regression.

scripts/check-desktop-runtime-errors/app/extractors/common/app-artifact-locator.ts

@@ -0,0 +1,46 @@
+import { join } from 'path';
+import { readdir } from 'fs/promises';
+import { die } from '../../../utils/log';
+import { exists } from '../../../utils/io';
+import { getAppName } from '../../../utils/npm';
+
+export async function findByFilePattern(
+  pattern: string,
+  directory: string,
+  projectRootDir: string,
+): Promise<ArtifactLocation> {
+  if (!directory) { throw new Error('Missing directory'); }
+  if (!pattern) { throw new Error('Missing file pattern'); }
+
+  if (!await exists(directory)) {
+    return die(`Directory does not exist: ${directory}`);
+  }
+
+  const directoryContents = await readdir(directory);
+  const appName = await getAppName(projectRootDir);
+  const regexPattern = pattern
+    /* eslint-disable no-template-curly-in-string */
+    .replaceAll('${name}', escapeRegExp(appName))
+    .replaceAll('${version}', '\\d+\\.\\d+\\.\\d+')
+    .replaceAll('${ext}', '.*');
+  /* eslint-enable no-template-curly-in-string */
+  const regex = new RegExp(`^${regexPattern}$`);
+  const foundFileNames = directoryContents.filter((file) => regex.test(file));
+  if (!foundFileNames.length) {
+    return die(`No files found matching pattern "${pattern}" in ${directory} directory.`);
+  }
+  if (foundFileNames.length > 1) {
+    return die(`Found multiple files matching pattern "${pattern}": ${foundFileNames.join(', ')}`);
+  }
+  return {
+    absolutePath: join(directory, foundFileNames[0]),
+  };
+}
+
+function escapeRegExp(string: string) {
+  return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+}
+
+interface ArtifactLocation {
+  readonly absolutePath?: string;
+}