Method beginTurn

internal/tui/model.go:630–636

beginTurn installs a fresh per-turn context, flips phase to thinking, and returns the chat stream-reader Cmd. Every path starting a new LLM round funnels through here so one m.cancel() cancels the whole cascade.

()

		m.cancel()
	}
	m.turnCtx, m.cancel = context.WithCancel(context.Background())
}

// beginTurn installs a fresh per-turn context, flips phase to thinking, and
// returns the chat stream-reader Cmd. Every path starting a new LLM round
// funnels through here so one m.cancel() cancels the whole cascade.
func (m *Model) beginTurn() tea.Cmd {
	m.installTurnContext()
	m.turnStart = time.Now()
	m.lastOutcome = outcomeNone // the new run replaces the prior frozen summary