dsfb-turbine 0.1.0

DSFB Structural Semiotics Engine for Gas Turbine Jet Engine Health Monitoring. A deterministic, read-only, observer-only augmentation layer for typed residual interpretation over existing Engine Health Monitoring (EHM), Gas Path Analysis (GPA), and Prognostics and Health Management (PHM) systems. The core engine is no_std + no_alloc. Unsafe code is forbidden in the library. Dataset loading, fleet evaluation, reporting, and executable examples are std-gated.