Set up Playwright for browser testing

- Playwright config for local browsers (Firefox by default) and Docker Chrome
- docker-compose.chrome.yml for browserless/chrome container (arm64)
- 4 connectivity smoke tests (home, contact, blog pages)
- 3 auth tests (redirect, login, logout) with auth helpers
- Custom fixtures with remote CDP connect support
- Shell scripts for start/stop/full Docker Chrome workflow
- Makefile targets: playwright, playwright-docker, playwright-full

app/playwright.docker.config.ts

@@ -0,0 +1,42 @@
+import { defineConfig, devices } from "@playwright/test";
+
+// Docker Chrome Playwright configuration.
+// Connects to a remote browserless/chrome container via CDP.
+//
+// Usage:
+//   1. Start the Chrome container:
+//      docker compose -f docker-compose.chrome.yml up -d
+//
+//   2. Run tests:
+//      npx playwright test --config=playwright.docker.config.ts
+
+const CDP_URL = process.env.PLAYWRIGHT_CDP_URL || "http://localhost:3000";
+
+export default defineConfig({
+  testDir: "./test/e2e",
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: "list",
+
+  use: {
+    baseURL: process.env.PLAYWRIGHT_BASE_URL || "http://localhost:8056",
+    trace: "on-first-retry",
+    headless: process.env.PLAYWRIGHT_HEADLESS !== "false",
+  },
+
+  // Connect to remote Chrome via CDP instead of launching locally.
+  // browserless/chrome exposes CDP at port 3000.
+  projects: [
+    {
+      name: "docker-chrome",
+      use: {
+        ...devices["Desktop Chrome"],
+        launchOptions: {
+          // Not used for remote connection, but placeholder for clarity
+        },
+      },
+    },
+  ],
+});