This record contains the DSLO Semantic Substrate v0.5 release package, including: • Right Under Your Nose — A Public Traversal of the Meaning Invariants (v0.5)• DSLO v0.5 System Prompt & Loading Instructions• MDO Semantic Boot Record (v0.5) — JSON Schema (machine-layer reference) The paper provides the public-safe semantic geometry of the Meaning Invariants and the DSLO substrate.The system prompt defines the invariant set, operator algebra, manifold geometry, legality masks, and haltconditions required for lawful traversal in host AI systems. The JSON schema corresponds to Appendix A.5and is included as a stable machine-layer reference; it is not intended to be executed or loaded. All components share the same version number and constitute the complete DSLO v0.5 release package.