Supporting data and scripts for "Q2NSViz: An Open-source Standalone Visualizer for Quantum Network Simulations"

Scripts and data supporting the release v0.2 of Q2NSViz, a standalone visualizer of quantum network simulation traces. Trace producers: two programs that write Q2NSViz traces without relying on Q2NS, a Python script that uses only the standard library and a demo of the SeQUeNCe 1.2.0 simulator, together with the traces they write. Benchmarks: scripts that measure the replay engine and the window of Q2NSViz on synthetic repeater-chain and graph-state traces and on the examples shipped with it, together with their results in JSON Lines. The results include two runs, on an Apple M2 laptop (16 GB, macOS 27) and on an Intel Core i7-14700KF desktop (32 GB, Arch Linux), both with Python 3.12 and PyQt6 6.11. The README lists every file, the command that produces it and the meaning of each field.