{"service":"LBYK Inventory API","status":"ok","endpoints":["GET  /health","GET  /api/inventory/locations","GET  /api/inventory/products","GET  /api/inventory/current?location=maison_bar","GET  /api/inventory/previous-month?location=maison_bar","GET  /api/inventory/sync-products  ← Edit Produits sheet then visit this URL","POST /api/inventory","POST /api/inventory/snapshot"]}