Method installTurnContext

internal/tui/model.go:620–625

installTurnContext cancels any in-flight turn context and installs a fresh per-turn root on m.turnCtx / m.cancel. Cancel-old-then-install-new keeps Ctrl+C consistent: one m.cancel() always unwinds the whole current cascade.

()

	return m, tea.Sequence(cmds...)
}

// submit commits a user prompt. sendText is the expanded form sent to the LLM
// (chip labels replaced by their original paste content); echoText is the
// collapsed form shown in scrollback so the chat doesn't swallow 80 lines of
// pasted log every turn; entry is the history snapshot replayed by ↑/↓,
// including chip state.
func (m Model) submit(sendText, echoText string, entry promptEntry) (tea.Model, tea.Cmd) {
	// Redact secret-bearing slash commands (/hamrpass <key>) before they reach
	// any sink that persists or replays them: the scrollback echo (kept in