fix(scripts): add short help to GitHub test map (#3223)

scripts/__tests__/build-github-test-map-help.test.mjs

@@ -0,0 +1,44 @@
+import assert from 'node:assert/strict';
+import { spawnSync } from 'node:child_process';
+import fs from 'node:fs';
+import os from 'node:os';
+import { dirname, join, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { test } from 'node:test';
+
+const HERE = dirname(fileURLToPath(import.meta.url));
+const SCRIPT = resolve(HERE, '..', 'test-planning', 'build-github-test-map.mjs');
+
+function writeFailingStub(binDir, name) {
+  fs.writeFileSync(
+    join(binDir, name),
+    `#!/usr/bin/env sh\necho "${name} should not run for help" >&2\nexit 99\n`,
+    { mode: 0o755 },
+  );
+}
+
+function runHelp(flag) {
+  const binDir = fs.mkdtempSync(join(os.tmpdir(), 'openhuman-test-map-stub-'));
+  for (const name of ['gh', 'codex', 'claude']) {
+    writeFailingStub(binDir, name);
+  }
+
+  return spawnSync(process.execPath, [SCRIPT, flag], {
+    encoding: 'utf8',
+    env: {
+      ...process.env,
+      PATH: `${binDir}${process.platform === 'win32' ? ';' : ':'}${process.env.PATH ?? ''}`,
+    },
+  });
+}
+
+test('build-github-test-map help exits before fetch or synthesis work', () => {
+  for (const flag of ['--help', '-h']) {
+    const result = runHelp(flag);
+
+    assert.equal(result.status, 0, result.stderr);
+    assert.match(result.stdout, /Usage: build-github-test-map\.mjs \[options\]/);
+    assert.match(result.stdout, /-h, --help\s+Show this message/);
+    assert.equal(result.stderr, '');
+  }
+});

scripts/test-planning/build-github-test-map.mjs

@@ -29,7 +29,7 @@ Options:
   --prompt-body-chars <count>    Max body chars per item sent to the LLM (default: ${DEFAULT_PROMPT_BODY_CHARS})
   --llm <codex|claude>           Non-interactive CLI to use for synthesis (default: ${DEFAULT_LLM})
   --model <name>                 Optional model override for the LLM CLI
-  --help                         Show this message
+  -h, --help                     Show this message
 
 Examples:
   node scripts/test-planning/build-github-test-map.mjs --max-prs 50 --max-issues 50
@@ -63,7 +63,7 @@ function parseArgs(argv) {
     if (arg === '--') {
       continue;
     }
-    if (arg === '--help') {
+    if (arg === '--help' || arg === '-h') {
       printUsage();
       process.exit(0);
     }