chore(test): add filter wrapper for vitest

package.json

@@ -32,7 +32,7 @@
     "typecheck": "tsgo --project tsconfig.json --noEmit",
     "test": "cross-env MCPORTER_TEST_REPORTER=quiet pnpm test:verbose",
     "test:quiet": "cross-env MCPORTER_TEST_REPORTER=quiet pnpm test:verbose",
-    "test:verbose": "vitest run",
+    "test:verbose": "node scripts/test-runner.js",
     "test:live": "MCP_LIVE_TESTS=1 vitest run tests/live",
     "clean": "rimraf dist",
     "dev": "tsc -w -p tsconfig.build.json",

scripts/test-runner.js

@@ -0,0 +1,34 @@
+#!/usr/bin/env node
+// Lightweight wrapper to translate `--filter foo` into Vitest include globs so
+// callers can run `pnpm test --filter my-test` without hitting the Vitest CLI
+// "Unknown option --filter" error.
+
+import { spawnSync } from 'node:child_process';
+import path from 'node:path';
+
+const args = process.argv.slice(2);
+const translated = [];
+const positional = [];
+
+for (let i = 0; i < args.length; i += 1) {
+  const token = args[i];
+  if (token === '--filter' || token === '-f') {
+    const pattern = args[i + 1];
+    if (!pattern) {
+      console.error('[test-runner] --filter requires a pattern');
+      process.exit(1);
+    }
+    positional.push(pattern);
+    i += 1; // skip pattern
+    continue;
+  }
+  translated.push(token);
+}
+
+const bin = path.join(process.cwd(), 'node_modules', '.bin', 'vitest');
+const result = spawnSync(bin, ['run', ...positional, ...translated], {
+  stdio: 'inherit',
+  env: process.env,
+});
+
+process.exit(result.status ?? 1);