SENTRAXIS™ — System and Method for Non‑Invertible Symbolic Processing, Multimodal Sensor‑Based Human and Animal Performance Monitoring, Baseline‑Normalised Response Metrics, and Zero‑Infrastructure Distributed Symbolic Ledger Architecture (DSLA) for Mandatory Elite‑to‑Grassroots Funding, Symbolic Audit, Coaching Achievement Verification, and Social‑Impact Routing