Problem

A TUI plugin cannot display the model/agent currently selected in the prompt before the next message is sent.

• TuiPluginApi.state exposes session, part, lsp, mcp, provider, config, path, vcs — no model/agent (packages/plugin/src/tui.ts, TuiState).
• state.session.get(id).model is the server session value: it is updated only when a prompt is sent (the model is sent with session.prompt, and session.update is only used for title/archive).
• The selected model/agent lives in the private Solid Local store in packages/tui/src/context/local.tsx. cycle() / set() only write that store; save() persists recent / favorite / variant to model.json but not the active model map.

Result: a status-line plugin that reads session.model (the only model value reachable from the plugin API) shows a stale value — it does not change on f2/tab model cycling, only after the next prompt is sent. The built-in prompt line does update live.

Reproduced on 1.18.31: cycling with f2 changes the built-in prompt line (· <model> <provider> · <variant>) but state.session.get(id).model stays on the previous value, and ~/.local/state/opencode/model.json never contains the active selection.

Ask

Expose the effective (pending) model / agent / variant through TuiState (or provide a change event on cycle/set), so TUI plugins can render an accurate status line without duplicating the built-in one inaccurately.

If a change event is preferred over a getter, something like tui.model.changed / tui.agent.changed would be enough.