Morning Focus Stack — Caffeine × L-Theanine × Ashwagandha

Morning focus is a design problem, not a willpower problem. Build the 3-stage stack — caffeine + L-theanine 60–90min after waking, plus ashwagandha the night before. Grounded in Owen 2008, Haskell 2008, Lopresti 2019, and Drake 2013.