Nanobot Senescent-Cell Clearance Swarm — 2D Tissue Map

480 living cells arranged on a flat tissue map slowly accumulate molecular damage, occasionally tipping individual cells into a senescent "zombie" state whose SASP signalling accelerates damage in their neighbours — the same bystander-effect biology behind cellular senescence and aging. A deployable swarm of repair nanobots patrols the map in real time, using a sensor-range seek behaviour to hunt down senescent cells and clear them before the burden spreads, while a tunable immune-clearance risk slowly thins the swarm itself, exactly the biocompatibility trade-off the source article raises for real nanomedicine. A parallel counterfactual control population, run with the identical damage equation but no nanobots, is plotted live on the strip chart so the "healthspan gain" readout shows, second by second, how much longer the protected tissue stays healthy. Drag the map to pan and scroll to zoom for a closer look at any patch of tissue.