Breaking the Cosmic Speed Limit and Causal Violations via Topological Rewiring in QGEFT

The current Paper 21 benchmark supports two explicit graph-engineering results inside QGEFT. First, a protected topological defect can beat the static graph light cone under Alcubierre-like rewiring: in the realized `N=1024` run, a target at static graph distance `4` is reached in `1` sweep instead of `4`, corresponding to an effective propagation factor of `4.0c` relative to the static baseline. Second, when the same setup is extended into a toy spacetime graph with dense retro-links, the run injects `225` retroactive edges beginning at sweep `2`, detects a directed closed timelike cycle at that same sweep, and finds that the source can already reach its own past at sweep `1`. The current evidence therefore supports a discrete QGEFT construction with both superluminal propagation relative to the static light cone and explicit source-to-past reachability in the associated toy spacetime graph.