Add GitHub Actions deployment workflow

- Add deployment workflow with test, build, and deploy jobs
- Add testing workflow for PRs
- Add deployment scripts (deploy, healthcheck, rollback)
- Add systemd service configuration
- Update Makefile with CI/CD targets
- Add comprehensive deployment documentation

scripts/healthcheck.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+HEALTH_URL="${HEALTH_URL:-http://localhost:1999/health}"
+MAX_RETRIES=30
+RETRY_DELAY=2
+
+echo "🏥 Running health check on $HEALTH_URL"
+
+for i in $(seq 1 $MAX_RETRIES); do
+    if curl -sf "$HEALTH_URL" > /dev/null 2>&1; then
+        echo "✅ Health check passed (attempt $i/$MAX_RETRIES)"
+
+        # Show health response
+        RESPONSE=$(curl -s "$HEALTH_URL")
+        echo ""
+        echo "📊 Health Status:"
+        echo "$RESPONSE" | jq . 2>/dev/null || echo "$RESPONSE"
+
+        exit 0
+    fi
+
+    echo "⏳ Waiting for service... (attempt $i/$MAX_RETRIES)"
+    sleep $RETRY_DELAY
+done
+
+echo "❌ Health check failed after $MAX_RETRIES attempts"
+exit 1