test: add full application BDD suite

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

bdd/support/hooks.js

@@ -0,0 +1,24 @@
+import { After, Before, Status, setDefaultTimeout } from "@cucumber/cucumber";
+import { chromium } from "playwright";
+
+setDefaultTimeout(Number(process.env.BDD_STEP_TIMEOUT_MS ?? 15000));
+
+Before(async function () {
+  this.browser = await chromium.launch({
+    headless: process.env.BDD_HEADLESS !== "false",
+  });
+  this.context = await this.browser.newContext();
+  this.page = await this.context.newPage();
+  this.baseURL = process.env.BDD_BASE_URL ?? "http://127.0.0.1:8080";
+});
+
+After(async function ({ result }) {
+  if (result?.status === Status.FAILED && this.page) {
+    await this.attach(
+      await this.page.screenshot({ fullPage: true }),
+      "image/png",
+    );
+  }
+  await this.context?.close();
+  await this.browser?.close();
+});