GRASCODE introduces a structured operational architecture for decision sequencing under boundary-state control conditions. The framework builds upon the Tafheena boundary-state model and addresses environments where perceived irreversibility, compressed time horizons, and elevated consequence structures disrupt conventional deliberative reasoning. In such contexts, decision-making does not always proceed through extended analytical evaluation. Instead, cognition may reorganize into a stabilized operational sequence that enables coherent action despite reduced deliberative bandwidth. GRASCODE formalizes this transition by describing an eight-stage sequence: Pattern recognition, Mechanism identification, Choice formation, Idling stabilization, Activation threshold crossing, Responsibility commitment, Decision execution, and Transmission of consequences. The model proposes that effective action in high-stakes environments emerges not from intuition alone, but from structured sequencing that maintains continuity of control during transitional cognitive states. GRASCODE therefore provides a conceptual and operational framework for understanding decision processes in contexts such as aviation, emergency response, extreme operational environments, and other situations involving irreversible or high-impact outcomes. This work presents the foundational architecture of the GRASCODE model, its relationship to boundary-state control dynamics described in Tafheena, and its potential role as a structured decision framework for analyzing and stabilizing human action under pressure.