Neurotransmitter-Membrane-Vascular Synergy of Keyora Braimory with Phosphatidylcholine: A Multi-Axis Nutritional Framework for Cognitive Performance and Neural Resilience Mechanistic Insights into Choline Supply, Phospholipid Remodeling, Synaptic Fluidity, and Neurovascular Regulation under High Cognitive Demand 0009-0007-5798-1996 DOI: 10.5281/zenodo.17712262