feat: Implement Grafana Cloud fixes

tests/README.md

@@ -235,3 +235,82 @@ For questions or issues with tests, check:
 2. Playwright docs
 3. Test failure screenshots/videos in `test-results/`
 4. GitHub Actions logs for CI failures
+5. Grafana Cloud Loki for centralized test logs
+
+## Grafana Cloud Loki Integration
+
+All test runs automatically send logs to Grafana Cloud Loki for centralized monitoring and analysis.
+
+### Viewing Logs in Grafana Cloud
+
+1. **Access Grafana Cloud**: Go to your Grafana Cloud instance
+2. **Navigate to Explore**: Click "Explore" in the left sidebar
+3. **Select Loki Data Source**: Choose your Loki data source from the dropdown
+4. **Query Test Logs**: Use LogQL queries to filter logs
+
+### Common LogQL Queries
+
+```logql
+# All Playwright test logs
+{job="playwright_tests"}
+
+# Logs for specific browser
+{job="playwright_tests", browser="chromium"}
+
+# Failed tests only
+{job="playwright_tests", status="failed"}
+
+# Tests from specific branch
+{job="playwright_tests", branch="main"}
+
+# Tests from specific GitHub run
+{job="playwright_tests", run_id="1234567890"}
+
+# Logs from specific test file
+{job="playwright_tests"} |= "login.spec.ts"
+
+# Failed tests with error messages
+{job="playwright_tests", status="failed"} | json | line_format "{{.test_name}}: {{.error}}"
+```
+
+### Local Testing with Grafana Cloud
+
+Test your Grafana Cloud integration locally:
+
+```bash
+# Set environment variables
+export GRAFANA_LOKI_URL="https://logs-prod-us-central1.grafana.net"
+export GRAFANA_LOKI_USERNAME="123456"  # Your instance ID
+export GRAFANA_LOKI_PASSWORD="glc_xxxxxxxxxxxxx"  # Your API key
+
+# Run test script
+chmod +x scripts/test-grafana-cloud.sh
+./scripts/test-grafana-cloud.sh
+
+# Run tests with Loki reporter
+npx playwright test tests/e2e/auth/login.spec.ts --project=chromium
+```
+
+### Required GitHub Secrets
+
+For CI/CD integration, ensure these secrets are configured in your GitHub repository:
+
+- `GRAFANA_LOKI_URL` - Your Grafana Cloud Loki endpoint (e.g., `https://logs-prod-us-central1.grafana.net`)
+- `GRAFANA_LOKI_USERNAME` - Your Grafana Cloud instance ID
+- `GRAFANA_LOKI_PASSWORD` - Your Grafana Cloud API key (starts with `glc_`)
+
+### Troubleshooting Grafana Cloud Connection
+
+**401 Unauthorized Error:**
+- Check your `GRAFANA_LOKI_USERNAME` (should be your instance ID)
+- Verify your `GRAFANA_LOKI_PASSWORD` (API key starting with `glc_`)
+- Regenerate API key if needed (Security > API Keys in Grafana Cloud)
+
+**Logs Not Appearing:**
+- Verify the correct region in `GRAFANA_LOKI_URL`
+- Check time range in Grafana Explore (default is last 5 minutes)
+- Run test script to validate connection: `./scripts/test-grafana-cloud.sh`
+
+**429 Rate Limit Error:**
+- Reduce test concurrency in `playwright.config.ts`
+- Increase `flushInterval` in Loki reporter options