Tuesday’s job fair came in the wake of Retreat’s corporate collapse over the past two weeks, with the sudden closure of its 80-bed in-patient addiction treatment center… on June 21 and its outpatient clinic… on June 24. Retreat also shuttered its Pennsylvania and Florida facilities at the same time, stopped paying hundreds of employees — including more than 160 full-time and part-time workers in New Haven — and discharged patients en masse. All of this came as two corporate executives died by suicide within five days of one another, and the company’s financial woes continued to mount.