yonatanorion/Unified-n-Mass-Pendulum-Operator-Framework: Zenodo archival release

Reference implementation accompanying the manuscript:

"A Unified Structural and Operator Framework for the Linear n-Mass Pendulum"

Contents:

• Structural matrix assembly via cumulative mass-sum rule
• Linear operator propagation using truncated Peano–Baker expansion
• Numerical validation scripts
• Figure generation tools

This release corresponds to the version submitted to JTCAM.