A tension-release mechanism configured to facilitate a coupling between a shade membrane and a support structure is provided. The tension-release mechanism comprises a coupling sleeve configured to be installed within the support structure. The tension-release mechanism also comprises a tension actuation element configured to extend along a connection path within the coupling sleeve. The tension actuation element is configured to engage a receiving feature within a moveable sleeve coupled to the shade membrane. Actuating the tension actuation element in a first direction causes the moveable sleeve to be received within the coupling sleeve. Actuation in a second direction causes the moveable sleeve to be decoupled from the coupling sleeve.