This version consolidates the experimental roadmap and engineering validation framework for the segmented-ring, phase-locked transport architecture. The paper now presents a complete progression from discrete step-locked confinement and boundary momentum coupling through laboratory realization, control tolerances, loss mechanisms, and practical scaling limits. New sections formalize thrust-to-power benchmarking against conventional EHD configurations, define operational phase-control and lock-tolerance envelopes for single- and multi-lane operation, and introduce a staged validation pathway incorporating supervised closed-loop integration with explicit electrical and force bookkeeping. A dedicated scaling analysis addresses actuator count, timing fidelity, thermal constraints, and medium-dependent effects, establishing measurable operating windows for incremental system expansion. A Summary and Validation Outlook clarifies that all externally observable forces arise from conventional momentum exchange at boundaries, with no reactionless mechanisms implied. The concluding sections unify transport as a synchronization-controlled confinement process and outline experimentally grounded future extensions. Interior structure and higher-demand operating modes are intentionally deferred pending validation of the Phase-1 outer-ring platform. Overall, this version reframes the concept as a reproducible engineering program, emphasizing measurable performance envelopes and a benchtop-to-system development path grounded in conventional physics.