Glossary

One term, one meaning. These are the words the app uses and the words this knowledge base uses.

Term	Meaning
Agent	A coding assistant program that reads, edits, and runs code. OpenCode, Claude Code, and Gemini are agents.
Attachment	An image you give to an agent with a prompt. It travels to the host device.
Change	The set of file edits an agent made on its branch. Shown in the changes pane as a diff.
Device	One machine that runs Admiral: a desktop, a server, or, as a viewer only, a phone.
Engine	The Admiral background service on a device. It runs agents, terminals, and storage for that device.
Headless	An engine running with no window, on a server or always-on machine.
Host	The device that owns a project folder. The host runs that project's agents.
Hull number	A short index, like `07`, that identifies a session. An identity mark, not a count.
Jersey code	The four status colors: amber needs you, blue running, green done, red failed.
Model	The AI model an agent uses to think. One agent can run many models.
Profile	The storage mode fixed at engine start: Local, Synced, or Development.
Project	A folder on one device, plus the sessions that belong to it.
Queue	The durable list of your instructions waiting for an agent.
Session	One conversation in Admiral, with one transcript, in one project.
Sync	The optional connection that keeps sessions current across your signed-in devices.
Tester program	The invite-only group that gets tester builds and can share usage data, crash reports, and feedback. Each kind of data is optional.
Update channel	The release line an install reads: `stable` for every install, `beta` for testers.
Worktree	A separate copy of a repository, used so an agent can work away from your working files.

Words this knowledge base avoids

Space. The internal name for what the app shows as a project. User-facing pages say project.
Chat. The internal name for what the app shows as a session. A few menu items may still say chat; they mean session.