test: add E2E database seed and Playwright global setup

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

e2e/global-setup.ts

@@ -0,0 +1,10 @@
+import { seedTestDatabase } from "./seed";
+
+export default async function globalSetup() {
+	await seedTestDatabase();
+}
+
+// Allow direct invocation: bun run e2e/global-setup.ts
+if (import.meta.main) {
+	await globalSetup();
+}