dropthejase stops shoving documents through the back door

When a user clicked download, preview, or export, the file used to travel from cloud storage, through the app's server, and only then to the user - a round trip that costs money and adds latency, especially for big documents. dropthejase has rewired all three of those actions so the server just hands back a short-lived, signed link to the file in storage, and the browser fetches it directly.

It's a small architectural shift with outsized payoff: cheaper to run, faster for the user, and no real downside since the signed links expire on their own. The same pattern was already in place for uploads, so this just brings the read side into line.