Mark unsupported 400x800 timing claim falsified

Correct the remaining stale scope statements in README and conclusion

Correct the now-stale scope statements: the 400x800 timings are freshly executed, not source-reported

Implement Algorithm 1's PRM+ -> DRSSN hybrid and time it against PRM+ itself at the paper's 400x800 scale

Claim 4: run the 400x800 zero-sum comparison independently; second-order reaches gap 8.2e-14 in 1.10s vs first-order plateauing at 1.1e-5 (1.4e8x worse)

Synchronize Hub-managed LFS metadata for jn7gGAya5h

Publish validated ICML reproduction for jn7gGAya5h

initial commit