const handleStatusUpdate = async (investmentId, newStatus) => {
    const token = localStorage.getItem('token');
    try {
        await axios.patch(`${BASE_URL}/investment/${investmentId}`, {
            investmentStatus: newStatus,
            note: newStatus === 'Onaylandı' ? 'Yatırım onaylandı' : 'Yatırım iptal edildi',
            resultDate: new Date().toISOString()
        }, {
            headers: {
                'Accept': 'application/json',
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${token}`
            }
        });
        await fetchInvestments();
    } catch (error) {
        console.error("Error updating status:", error);
        setError(error.response?.data?.detail || "Failed to update investment status");
    }
};