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/docker-compose.chrome.yml

@@ -0,0 +1,27 @@
+# Docker Compose for Playwright Chrome container
+#
+# Usage:
+#   docker compose -f docker-compose.chrome.yml up -d     # start Chrome
+#   docker compose -f docker-compose.chrome.yml down       # stop Chrome
+#   make playwright                                         # run tests against it
+#
+# The container exposes Chrome DevTools Protocol on port 9222.
+# Playwright connects via the websocket endpoint.
+
+services:
+  chrome:
+    # browserless/chrome is self-contained with Chrome + CDP exposed
+    # multi-arch (supports arm64 for Apple Silicon Macs)
+    image: browserless/chrome:latest
+    container_name: firehose-playwright-chrome
+    ports:
+      - "3000:3000"   # browserless dashboard (not required but handy)
+    environment:
+      - CONNECTION_TIMEOUT=600000
+      - MAX_CONCURRENT_SESSIONS=10
+      - PREBOOT_CHROME=true
+      - DEMO_MODE=false
+      - ENABLE_CORS=true
+    restart: unless-stopped
+    # Run as non-root to avoid permission issues
+    user: "1001:1001"