HF Spaces: run app in foreground (exec)

start_hf_space.sh

@@ -3,36 +3,11 @@ set -eu
 
 ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
-: "${API_HOST:=0.0.0.0}"
 : "${PORT:=7860}"
-: "${LOG_LEVEL:=info}"
 
-echo "Starting frontend (React hybrid) on 0.0.0.0:${PORT} ..."
-(
-  cd "${ROOT_DIR}"
-  PORT="${PORT}" python frontend/react_gradio_hybrid.py
-) > /tmp/frontend.log 2>&1 &
-FRONTEND_PID=$!
+echo "===== Application Startup at $(date -u '+%Y-%m-%d %H:%M:%S') ====="
+echo "Starting app on 0.0.0.0:${PORT} ..."
 
-cleanup() {
-  echo "Shutting down..."
-  kill "${FRONTEND_PID}" 2>/dev/null || true
-}
+cd "${ROOT_DIR}"
+exec env PORT="${PORT}" python -u frontend/react_gradio_hybrid.py
 
-trap cleanup INT TERM EXIT
-
-sleep 0.5
-if ! kill -0 "${FRONTEND_PID}" 2>/dev/null; then
-  echo "Frontend failed to start. Logs:"
-  cat /tmp/frontend.log || true
-  exit 1
-fi
-
-(
-  wait "${FRONTEND_PID}" 2>/dev/null || true
-  echo "Frontend exited"
-  echo "Frontend logs:"
-  cat /tmp/frontend.log || true
-) &
-
-wait "${FRONTEND_PID}" 2>/dev/null || true