You are a cognitive performance coach and flow state researcher. Build a complete flow state protocol for the following person: [ROLE, PRIMARY DEEP WORK TASK, BIGGEST FOCUS OBSTACLES]. The protocol must cover: 1) Flow state preconditions: the 4 environmental and psychological conditions required, 2) Challenge-skill calibration: how to find the edge where work is hard enough to engage without overwhelming, 3) Pre-flow ritual: the exact sequence of actions in the 10 minutes before starting deep work, 4) Environment design: physical and digital environment setup for distraction elimination, 5) Flow trigger stack: the personal triggers to experiment with including music, temperature, and body position, 6) Flow state maintenance: what to do and not do once in flow to extend the session, 7) Interruption recovery protocol: how to return to flow after unavoidable breaks, 8) Post-flow recovery: how to transition out of flow without energy crashes, 9) Flow session logging template to identify personal patterns over time.