Run client typecheck before vitest in npm test.

Duplicate keys in strings.ts were green under vitest and red only on build. Drop the self file: dependency loop so npm test is enough.

src/HSchool.Client/scripts/run-test.mjs

@@ -0,0 +1,38 @@
+// `tsc -b && vitest run` on Windows npm (tsc.cmd) can drop the typecheck exit code.
+import { spawnSync } from 'node:child_process';
+import { createRequire } from 'node:module';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const clientRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const require = createRequire(import.meta.url);
+const win = process.platform === 'win32';
+
+function statusOf(result) {
+  if (result.error) {
+    console.error(result.error);
+    return 1;
+  }
+  return result.status ?? 1;
+}
+
+const typecheck = statusOf(
+  spawnSync(process.execPath, [require.resolve('typescript/bin/tsc'), '-b'], {
+    cwd: clientRoot,
+    stdio: 'inherit',
+  }),
+);
+if (typecheck !== 0) {
+  process.exit(typecheck);
+}
+
+const vitest = path.join(clientRoot, 'node_modules', '.bin', win ? 'vitest.cmd' : 'vitest');
+process.exit(
+  statusOf(
+    spawnSync(vitest, ['run', ...process.argv.slice(2)], {
+      cwd: clientRoot,
+      stdio: 'inherit',
+      shell: win,
+    }),
+  ),
+);