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/bin/e2e-full.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Full e2e workflow: start Docker Chrome, run Playwright tests, stop container.
+#
+# Usage: ./bin/e2e-full.sh [extra playwright args...]
+#
+# Requires:
+#   - Docker (colima or Docker Desktop running)
+#   - Phoenix dev server running (default http://localhost:8056)
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+cd "$PROJECT_DIR"
+
+echo "=== Starting Chrome container ==="
+docker compose -f docker-compose.chrome.yml up -d
+
+echo "=== Waiting for Chrome to be ready... ==="
+for i in $(seq 1 30); do
+  if curl -s -o /dev/null -w "%{http_code}" http://localhost:3000/ 2>/dev/null | grep -q 200; then
+    echo "Chrome is ready!"
+    break
+  fi
+  if [ "$i" -eq 30 ]; then
+    echo "Timed out waiting for Chrome."
+    docker compose -f docker-compose.chrome.yml logs --tail=20
+    exit 1
+  fi
+  sleep 1
+done
+
+echo "=== Running Playwright e2e tests against Docker Chrome ==="
+cd assets && PLAYWRIGHT_BROWSERS_PATH=node_modules/playwright-core/.local-browsers \
+  npx playwright test --config=../playwright.docker.config.ts "$@"
+
+EXIT_CODE=$?
+
+cd "$PROJECT_DIR"
+echo "=== Stopping Chrome container ==="
+docker compose -f docker-compose.chrome.yml down
+
+exit $EXIT_CODE