pages/agents held the roster page, the terminal page and every component under them. It keeps the two pages; the components move to src/agent, by concern: roster (card, wanted menu, actions), detail (panel body, dialog, inference, linked accounts, link menu) and terminal (preview, input, subagents, stream hooks, favicon), with the shared row type and icon at the top. Moves and import rewrites only.
The terminal page gets an agent badge (icon and name) that opens the agent's detail panel in a dialog over the terminal, without the terminal preview. The panel body and the actions on an agent (declare a wanted state, link an account, with their confirm and form dialogs) move out of the agent roster page into AgentDetail and useAgentActions, so the roster and the dialog share them. AgentIcon moves to its own file for the same reason.
