map: push the two crowded star pairs back over the separation floor

world.js warned [POS] min pairwise 75.0 on every load. Two pairs were under MIN_SEP_FLOOR, not one -- only the minimum gets reported: salsa/reggaeton at 75.0 and ragtime/reedrush at 80.0.

• Each pair is pushed apart along its own axis with the midpoint held -- the smallest move that clears the floor, and the one that least disturbs either star's relationship to everything else.

• Min pairwise is now 93.1 (flamenco/hexagonstampede) and the warning is gone.

▶ Play it: Bulrush Cyclotron → Benzene Cavalry → Clave Reactor — the three genres this change names, as one path https://stellate.app/?genre=reedrush&seed=8285&path=845.15075,1137.16213,249.13036&xdur=0.227

2e75c5c https://github.com/aboard-io/stellate/commit/2e75c5cda03a067f7b0fee087ca302d36f0bdf2b