feat: Implement Playwright testing setup

tests/setup/global-teardown.ts

@@ -0,0 +1,39 @@
+/**
+ * Playwright Global Teardown
+ * 
+ * Runs once after all tests to clean up the test environment.
+ */
+
+import { FullConfig } from '@playwright/test';
+import { cleanupTestData, getTestDataStats } from '../fixtures/database';
+
+async function globalTeardown(config: FullConfig) {
+  console.log('🧹 Starting global teardown...');
+
+  try {
+    // Get stats before cleanup
+    const statsBefore = await getTestDataStats();
+    console.log('📊 Test data before cleanup:', statsBefore);
+
+    // Clean up all test data
+    await cleanupTestData();
+
+    // Verify cleanup
+    const statsAfter = await getTestDataStats();
+    console.log('📊 Test data after cleanup:', statsAfter);
+
+    const totalRemaining = Object.values(statsAfter).reduce((sum, count) => sum + count, 0);
+    if (totalRemaining > 0) {
+      console.warn('⚠️  Some test data may not have been cleaned up properly');
+    } else {
+      console.log('✅ All test data cleaned up successfully');
+    }
+
+    console.log('✅ Global teardown complete');
+  } catch (error) {
+    console.error('❌ Global teardown failed:', error);
+    // Don't throw - we don't want to fail the test run because of cleanup issues
+  }
+}
+
+export default globalTeardown;