A 52-year-old woman from Mumbai is admitted with acute onset right-sided hemiparesis and aphasia. CT head shows left MCA territory infarction. Cerebral angiography reveals complete occlusion of the left internal carotid artery (ICA) at its origin, with excellent cross-filling via a prominent anterior communicating artery (AComm) from the right anterior cerebral artery (ACA). The infarct core is small. What is the most appropriate next step in management?