Add a per-user lead agent and make the right pane task-focused

internal/agents/compact.go

@@ -14,10 +14,28 @@ const handoffPrompt = `Write a handoff for a fresh agent that will continue this
 
 const handoffPreamble = "You are continuing this task from a previous agent session, which ended so the work could go on with a fresh context. Its handoff follows.\n\n"
 
+const leadHandoffPreamble = "You are continuing as the human's lead agent from a previous session, which ended so you could go on with a fresh context. Its handoff follows. Signals that arrived meanwhile come next.\n\n"
+
+const leadHandoffPrompt = `Write a handoff for a fresh lead agent that will take over from you with none of your context. ` +
+	`Cover: the human's standing instructions and preferences; what each task you are tracking is doing and what you are waiting on from it; ` +
+	`questions you have surfaced or answered and why; what you last pointed the human's attention at; and anything you promised to do or check. ` +
+	`Be complete: the next agent sees nothing else. Your final message is the handoff, and nothing else.`
+
 func (m *Manager) Compact(ctx context.Context, sessionID string) (api.AgentSession, error) {
+	sess, err := m.store.GetSession(ctx, sessionID)
+	if err != nil {
+		return api.AgentSession{}, err
+	}
+	if sess.Owner != "" {
+		return m.Send(ctx, sessionID, "byre", leadHandoffPrompt, "")
+	}
 	return m.Send(ctx, sessionID, "byre", handoffPrompt, "")
 }
 
+func isHandoffPrompt(actor, text string) bool {
+	return actor == "byre" && (text == handoffPrompt || text == leadHandoffPrompt)
+}
+
 func (m *Manager) continueFromHandoff(sessionID, handoff string) {
 	ctx := context.Background()
 	err := m.handoff(ctx, sessionID, handoff)
@@ -31,10 +49,6 @@ func (m *Manager) handoff(ctx context.Context, sessionID, handoff string) error
 	if err != nil {
 		return err
 	}
-	task, err := m.store.GetTask(ctx, sess.TaskId)
-	if err != nil {
-		return err
-	}
 	creator, err := m.store.GetUser(ctx, sess.CreatedBy)
 	if err != nil {
 		return err
@@ -45,6 +59,15 @@ func (m *Manager) handoff(ctx context.Context, sessionID, handoff string) error
 		return err
 	}
 
+	if sess.Owner != "" {
+		_, err = m.createLead(ctx, creator, leadHandoffPreamble+handoff, sess.Model, "byre", nil)
+		return err
+	}
+
+	task, err := m.store.GetTask(ctx, sess.TaskId)
+	if err != nil {
+		return err
+	}
 	_, err = m.create(ctx, task, creator, handoffPreamble+handoff, sess.Model, "byre", nil)
 	return err
 }