How this works: changes you make here are saved in this browser as you go, but the live site only updates once you click "Download Updated File" and replace assets/inventory-data.js in your project folder with the downloaded copy (drag it in and choose "Replace" when your file browser asks), then redeploy (drag your project folder into your Netlify project's "Production deploys" box). Photos you upload here are packed directly into that file, so no separate image hosting is needed.