docs: pyramids + soccer-twos expert validation numbers after re-record

docs: dungeon-escape expert validation numbers after re-record

docs: pushblock expert re-record numbers + decision-period action-label rule

fix: replace attached '~' (approx) with ≈ so HF markdown stops rendering it as strikethrough; backtick 'T ~ U' notation

soccer-twos medium/simple: describe per-team per-match softmax-temperature-range self-play tiers (T~U(1.3,2.6)/U(2.1,3.4), side-swap norm ~0.80/0.60), replacing the epsilon-pool description

pushblock medium/simple: describe per-episode softmax-temperature-range tiers (T~U(2.1,3.2)/U(3.25,4.75), norm 0.80/0.60), replacing the fixed-T description

pyramids medium/simple: describe per-episode softmax-temperature-range tiers (T~U(2.7,4.9)/U(4.8,7.1)), replacing the fixed-T description

dungeon-escape medium/simple: describe new per-group softmax-temperature-range tiers (step-reward metric), replacing the old epsilon group-noise description

docs: pushblock/pyramids tiers -> softmax-temperature, step-reward metric

docs: restructure card (overview + unified ladder summary + collapsible per-env tables); move reproduction recipe to docs/reproduction.md