Files
One workspace per tron: a working folder shared by every agent and by you.
One workspace, not one per agent
Every agent of the tron works in the same folder, /workspace in the container, and so do you from the Files page. Each agent keeps its own notes in agents/<name>; in/ holds what arrives with a message (attachments) and is read-only for the agents. A deleted file goes to the trash and stays there 7 days before it is gone; Restore puts it back. Every file says who wrote it (“by”: an agent, you, or the Tron API).
Attachments
A file sent with a message lives as long as the turn. With Keep attachments on (Garage → Settings → On start → Files) it stays in in/<date>/<name>, the message carries that path, and the tron can read it again later, in any session. It counts toward the disk quota.
Folders
A folder is a real folder in the workspace. New folder makes an empty one where you are; an upload or a move into a path makes the folders it needs. The page reads the whole workspace at once and rebuilds the tree on the client, so an empty folder still shows.
Uploading and downloading
A download is fetched with your session, not linked, because the file route needs the token. Rename and move are the same operation: a new path. Index this file puts a workspace file into a library, so agents can search it.
Quota
The workspace, the trash and kept attachments all count toward the disk of your plan. Over it, you keep working, but an upload is refused (413).