{"status":"ok","message":"LINE Webhook Server is running on Vercel","timestamp":"2026-06-17T08:48:24.346Z","timezone":{"server":"UTC","offset":"+00:00","taiwanTime":"2026-06-17T16:48:24.346+08:00","taiwanReadable":"2026/06/18 24:48:24"},"env":{"lineToken":"Set ✓","lineSecret":"Set ✓","assemblyaiKey":"Set ✓"}}