Lineum Core (v1.0.19): reference implementation & evidence bundle

Lineum is a deterministic, continuous simulation governed by a coupled non-linear partial differential equation (PDE) system. This simulation demonstrates how complex, physics-like phenomena—including dynamic quasiparticle formation, interference patterns, orbital mechanics, and apparent gravitational attraction—can spontaneously emerge from purely local, low-level interactions without the imposition of any predefined spatial metric or fundamental forces. This repository provides the reference implementation of the Lineum computational engine, alongside canonical HTML reports and visual artifacts (CSV/PNG/GIF). The core methodological principles, including the definition of the central variables, SI conversions (e.g., energy, wavelength, and scale-relative effective mass constraints), and the criteria for Structural Closure governed by center-trace half-life dynamics, are rigorously documented in the accompanying core whitepaper (whitepaper/01-core-principles.md). The operational evidence and falsifiable audits (C1/C2/C3 checks) are located in the output/ directory, providing a robust, commit-anchored foundation for independent reproducibility.