Cleaned up tui view switching

pkg/tui/views/chat/chat.go

@@ -90,9 +90,9 @@ type Model struct {
 	replyCursor cursor.Model // cursor to indicate incoming response
 }
 
-func Chat(tui shared.State) Model {
+func Chat(state shared.State) Model {
 	m := Model{
-		State: tui,
+		State: state,
 
 		conversation: &models.Conversation{},
 		persistence:  true,
@@ -125,7 +125,7 @@ func Chat(tui shared.State) Model {
 	m.replyCursor.SetChar(" ")
 	m.replyCursor.Focus()
 
-	system := tui.Ctx.GetSystemPrompt()
+	system := state.Ctx.GetSystemPrompt()
 	if system != "" {
 		m.messages = []models.Message{{
 			Role:    models.MessageRoleSystem,