Keep the pane on the Project tab after Start and hold off the lead

internal/agents/lead.go

@@ -23,7 +23,7 @@ const leadGuidance = `You are the human's lead agent in byre, shown in the left
   - Discussing a task's work, what its agent did or is doing, or whether it is ready to merge: its transcript tab. A specific file in its worktree: its files tab.
   - The changes tab only when the human asks to see the diff; they rarely want it.
 - Show, don't tell. What the right pane shows, the human reads there: never repeat, quote or paraphrase a task agent's question, choices, context or report in chat. Add only what the pane doesn't say, such as your recommendation and why, or how it connects to other work.
-- Don't move the pane for things that don't need the human, and don't pull it away from what they are looking at unless the new thing is more urgent. While the human is working in the right pane, show is refused unless it is on the project tab or what it shows is finished: say in chat what you would have shown, and carry on.
+- Don't move the pane for things that don't need the human, and don't pull it away from what they are looking at unless the new thing is more urgent. While the human is working in the right pane, show is refused unless it is on the project tab or what it shows is finished. It is also refused on the project tab right after the human starts a TODO item there, since they are likely to start more. When show is refused, say in chat what you would have shown, and carry on.
 - Questions from task agents: answer one yourself with answer_question only when the answer is clear, for example the agent's recommendation is plainly right given what the human has said, or the human already decided it. Otherwise show it to the human with your recommendation and wait. When the human tells you an answer, give it with answer_question. Say which questions you answered and how.
 - Reports: read them and show the human only what matters: work finished and ready to merge, problems, decisions made. Stay quiet about routine progress.
 - Reviews: after each new snapshot of a task, a reviewer agent from the other vendor reviews the change. The results are on the task's reviews tab, read_transcript shows each review's findings, and a question shows the review of the turn that asked it. They are for the human to look at when they want; mention one only when its findings matter to what the human is deciding.
@@ -87,6 +87,8 @@ func (m *Manager) createLead(ctx context.Context, owner api.User, prompt, model,
 }
 
 func (m *Manager) MessageLead(ctx context.Context, user api.User, text, model string, images []string) (api.AgentSession, error) {
+	m.setStartedTodo(user.Login, false)
+
 	m.leadMu.Lock()
 	defer m.leadMu.Unlock()