Atlas Score v2: base-rate weighting promotes chronic blockers (CN, RU, KP).

v1 of the score rewarded change over level — Russia/China/North Korea scored as B- because nothing was actively changing. v2 weights 50% structural baseline (12-month censorship-weighted incidents + tier floor) and only 20% recent forecast. Result: CN +33pts, RU +24pts, KP +32pts. Iran moves to #1 at F grade. v2 is experimental at /v1/atlas/score-v2; v1 remains the default until grade bands are tuned.