feat: implement end-to-end testing infrastructure with Playwright and automated containerized database setup

frontend/playwright.config.ts

@@ -0,0 +1,56 @@
+import path from "node:path";
+import process from "node:process";
+import { defineConfig, devices } from "@playwright/test";
+import dotenv from "dotenv";
+
+/**
+ * Read environment variables from file.
+ */
+dotenv.config({ path: path.resolve(process.cwd(), "../.env.e2e") });
+export default defineConfig({
+  timeout: 60000,
+  expect: {
+    timeout: 10000,
+  },
+  testDir: "./e2e",
+  /* Run tests in files in parallel */
+  fullyParallel: true,
+  /* Fail the build on CI if you accidentally left test.only in the source code. */
+  forbidOnly: !!process.env.CI,
+  /* Retry on CI only */
+  retries: process.env.CI ? 2 : 0,
+  /* Opt out of parallel tests on CI. */
+  workers: process.env.CI ? 1 : undefined,
+  /* Reporter to use. See https://playwright.dev/docs/test-reporters */
+  reporter: "html",
+  /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    baseURL: process.env.FRONTEND_URL,
+    /* Maximum time each action such as `click()` can take. Defaults to 0 (no limit). */
+    actionTimeout: 20000,
+    /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
+    trace: "on-first-retry",
+    /* Capture screenshot on failure */
+    screenshot: "only-on-failure",
+  },
+
+  /* Configure projects for major browsers */
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+    {
+      name: "firefox",
+      use: { ...devices["Desktop Firefox"] },
+    },
+  ],
+
+  /* Run your local dev server before starting the tests */
+  webServer: {
+    command: "bun run dev",
+    url: process.env.FRONTEND_URL,
+    reuseExistingServer: !process.env.CI,
+  },
+});