Initial envsitter CLI and safe env matching

scripts/run-tests.mjs

@@ -0,0 +1,21 @@
+import { readdir } from 'node:fs/promises';
+import { join } from 'node:path';
+import { spawn } from 'node:child_process';
+
+const testDir = join(process.cwd(), 'dist', 'test');
+
+const entries = await readdir(testDir, { withFileTypes: true });
+const testFiles = entries
+  .filter((e) => e.isFile() && e.name.endsWith('.test.js'))
+  .map((e) => join(testDir, e.name))
+  .sort((a, b) => a.localeCompare(b));
+
+if (testFiles.length === 0) {
+  process.stderr.write('envsitter: no test files found in dist/test\n');
+  process.exitCode = 1;
+} else {
+  const child = spawn(process.execPath, ['--test', ...testFiles], { stdio: 'inherit' });
+  child.on('exit', (code) => {
+    process.exitCode = code ?? 1;
+  });
+}