👦 Nephew: Uncle, when a file finishes uploading to S3... nothing happens to it after that. Shouldn't something make a thumbnail, or check the file is safe, or tell the user "hey, it's ready"?

👨‍🦳 Uncle: Great catch. And here's the fun part — we're not going to leave a server running all day just to check "did a new file show up yet? did a new...