{"status":"ok","message":"LINE Webhook Server is running on Vercel","timestamp":"2026-08-15T04:38:27.685Z","timezone":{"server":"UTC","offset":"+00:00","taiwanTime":"2026-08-15T12:38:27.685+08:00","taiwanReadable":"2026/08/15 20:38:27"},"env":{"lineToken":"Set ✓","lineSecret":"Set ✓","assemblyaiKey":"Set ✓"}}