A 55-year-old man presents to the emergency department after his wife found him in the garage with the car engine running in an enclosed space. He tells the PMHNP he wanted to die, describes months of planning this specific method, and states he is "disappointed it didn't work." He has a history of a prior suicide attempt by overdose 3 years ago, recently lost his job, and has been drinking heavily. He refuses to engage in safety planning and states, "I'll just find another way." What is the most appropriate disposition?