Symbolic Mechanics — Human OS Backend State-Mapping Engine - External Entry Pack v1.0

This document introduces the Human OS Backend State-Mapping Engine as an external entry point into the Symbolic Mechanics / Human OS Prototype Line. The engine is positioned as a symbolic-computational backend system for reconstructing internal state, route, pressure, and maintenance mechanisms from messy human language. It is designed for low-structure inputs such as fragmented relational reflection, contradiction, avoidance, emotional compression, repeated explanation, or unclear internal pressure. Rather than presenting the full Symbolic Mechanics archive, this entry pack isolates one evaluable capability: messy human language -> backend state map -> route / pressure / maintenance reconstruction The document explains the external problem, the minimum output contract, the difference between ordinary explanation and backend mapping, benchmark evidence, current prototype status, demonstration cases, possible use cases, integration modes, collaboration interface, and limitations.