Remove MongoDB; add PM2 scripts, CI, tests; fix PlayerTab hooks; add pm2 smoke-test

database/scripts/pm2_smoke_test.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Start pm2 using the repo pm2.config.js, wait until server is responsive, then stop pm2.
+set -euo pipefail
+cd "$(dirname "${BASH_SOURCE[0]}")/.."
+# start pm2 using npm script (if available) or call pm2 directly
+if command -v npm >/dev/null 2>&1; then
+  npm run pm2:start || true
+else
+  pm2 start pm2.config.js --env production --update-env || true
+fi
+# wait for server
+for i in {1..15}; do
+  if curl -sSf http://localhost:5000/ >/dev/null 2>&1; then
+    echo "server up"
+    break
+  fi
+  sleep 1
+done
+# basic health endpoints
+curl -sSf http://localhost:5000/api/players || true
+curl -sSf http://localhost:5000/api/shop/items || true
+# stop pm2 process
+if command -v npm >/dev/null 2>&1; then
+  npm run pm2:stop || true
+else
+  pm2 stop deathwatch-server || true
+fi
+exit 0