fix(smoke): guard staging schema and include player session tokens (refs #130 #90)

infra/staging/smoke_suite.sh

@@ -50,6 +50,12 @@ PY
 echo "[smoke] healthz check: ${BASE_URL}/healthz"
 curl -fsS "${BASE_URL}/healthz" >/dev/null || { SMOKE_FAIL_MESSAGE="healthz check failed" fail "healthz check failed"; }
 
+echo "[smoke] migration consistency check"
+(
+  cd "${APP_DIR}"
+  .venv/bin/python manage.py migrate --check --noinput
+) || { SMOKE_FAIL_MESSAGE="schema drift: unapplied migrations in staging" fail "schema drift: unapplied migrations in staging"; }
+
 echo "[smoke] gameplay flow via management command"
 (
   cd "${APP_DIR}"