TUI: Tab opens <cwd>/todo.txt (project root) instead of .pi/dashboard/tasks/

main.go

@@ -644,7 +644,7 @@ func openTuxedo(m model) tea.Cmd {
 			agent = m.view[row]
 			haveAgent = true
 			if agent.Cwd != "" {
-				todoPath = agent.Cwd + "/.pi/dashboard/tasks/todo.txt"
+				todoPath = filepath.Join(agent.Cwd, "todo.txt")
 			}
 		}
 	}