feat(ci): run the release check on built Windows shells (#3346)

fluxer_desktop/scripts/release-check.mjs

@@ -146,7 +146,10 @@ function stageApp(options, sandbox) {
 			.map((name) => path.join(staged, name))
 			.find((candidate) => {
 				const stats = fs.statSync(candidate);
-				return stats.isFile() && (stats.mode & 0o111) !== 0 && /^fluxer/iu.test(path.basename(candidate));
+				const name = path.basename(candidate);
+				if (!stats.isFile() || !/^fluxer/iu.test(name)) return false;
+				if (process.platform === 'win32') return /\.exe$/iu.test(name) && !/_ExecutionStub\.exe$/iu.test(name);
+				return (stats.mode & 0o111) !== 0;
 			});
 		if (executable == null) fail(`${options.app} holds no fluxer executable`);
 		return {executable, portableRoot: path.join(staged, 'data')};
@@ -265,10 +268,28 @@ async function startUpdateFromRenderer(debugPort, timeoutMs) {
 	fail('update: the shell never told the renderer that an update is available');
 }
 
-async function waitForRenderer({logPath, debugPort, version, timeoutMs, label}) {
+function startupFailure(logPath) {
+	try {
+		const lines = fs.readFileSync(logPath, 'utf8').split(/\r?\n/u);
+		const index = lines.findIndex((line) => /\[NativeModulePreflight\] Fatal/u.test(line));
+		return index < 0 ? null : lines.slice(index, index + 3).join(' ');
+	} catch {
+		return null;
+	}
+}
+
+async function waitForRenderer({logPath, debugPort, version, timeoutMs, label, child = null}) {
 	const deadline = Date.now() + timeoutMs;
 	let observed = {log: observeLog(logPath), page: null};
 	while (Date.now() < deadline) {
+		if (child != null && (child.exitCode != null || child.signalCode != null)) {
+			const failure = startupFailure(logPath);
+			fail(
+				`${label}: the shell exited with ${child.exitCode ?? child.signalCode} before the renderer reported${
+					failure == null ? '' : `, ${failure.trim()}`
+				}`,
+			);
+		}
 		observed = {log: observeLog(logPath), page: await servedVersionInPage(debugPort)};
 		if (
 			observed.page === version &&
@@ -282,7 +303,9 @@ async function waitForRenderer({logPath, debugPort, version, timeoutMs, label})
 	fail(
 		`${label}: expected renderer ${version}, the shell serves ${observed.log.served?.version ?? 'nothing'} from ${
 			observed.log.served?.source ?? 'nowhere'
-		}, the window loads ${observed.page ?? 'nothing'} and reports ${observed.log.reportedBuild ?? 'nothing'}`,
+		}, the window loads ${observed.page ?? 'nothing'} and reports ${observed.log.reportedBuild ?? 'nothing'}${
+			startupFailure(logPath) == null ? '' : `, ${startupFailure(logPath)}`
+		}`,
 	);
 }
 
@@ -338,6 +361,7 @@ async function run() {
 			version: firstVersion,
 			timeoutMs: options.timeoutMs,
 			label: 'launch',
+			child: options.update ? null : child,
 		});
 		result.stages.push({stage: 'launch', ...first});
 		let final = first;