docs/analysis/51-percent.md: what a 51 percent attacker can and cannot do on Igneum, with
numbers (the selected-chain race over a 90-s hold, the lock as the reorder bound, the veto
at 1/3 of weight and its rental cost, the departure case and the LEAVE item, the p2p surface).
docs/analysis/horizon/consensus-security.md: the attack catalogue across GHOSTDAG ordering,
the difficulty rule, the finality weight, miner signalling, proof records, the exec layer and
p2p, each with the bound and the rental cost at the measured USD 11.7 per GH/s-hour; the
pruned-node unwrap class with its sibling list in the sync and IBD flows; fourteen ranked
defences, three of them not recommended with the reason.
Models and results: sim/horizon/consensus-security/ (ghostdag_sim.py, finality_horizon.py,
cost_model.py, signalling.py, result files).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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