Pingquanqi（イコライザー）：人間とAIエージェントの相互作用を統治する学際的社会技術フレームワーク

LLM agents are transitioning from experimental tools to permanent infrastructure -- a computational layer as enduring as the electrical grid. Like any infrastructure, they carry a cost chain from physical capital through enterprise investment to user consumption, ending at the user's most irreplaceable resource: lifetime. When unoptimized, this chain leaks, consuming user lifetime without adequate compensation. This paper proposes Pingquanqi (Equalizer), a cross-domain sociotechnical framework for Human-Agent Interaction Governance (HAIGF). Its product form is an Agent framework-level embedded design specification, analogous to WCAG for web accessibility, whose goal is not to be purchased but adopted as a standard. Pingquanqi consists of four integrated components deployable as native middleware: (1) a user-state discrimination model enabling proactive knowledge leveling, (2) a Bayesian progressive stop-loss rule capping per-session interaction cost, (3) controlled friction mechanisms breaking self-reinforcing dependency loops, and (4) Lsteal, a transparency metric rendering token-to-lifetime cost conversion visible. A fifth mechanism, reflective summarization (F5), enables guided cognitive recollection. The framework is grounded in cross-cultural philosophy: Mao's epistemology of practice (On Practice, 1937) provides the basis for cross-session knowledge accumulation; Wang Yangming's unity of knowledge and action (zhi xing he yi, c. 1509) illuminates Lsteal's root -- knowing without acting is incomplete; and Hegel's unity of theory and practice demonstrates cross-traditional convergence. This paper argues Pingquanqi's primary economic beneficiary is the enterprise deploying Agent services -- through reduced wasted computation, improved user satisfaction, and sustained subscription revenue -- with individual user benefit as the natural downstream consequence.