Sandwich Attack Estimator

Models the full three-step attack against a real pool: the attacker’s buy, your trade against the moved price, and their sell. The insight it makes concrete is that your slippage tolerance is the attacker’s budget — they push the price to the exact edge of what you will still accept and keep the difference, so the tool solves for that edge by binary search rather than guessing. It shows what you would receive fairly, what you would receive sandwiched, and what a tighter tolerance would save, with a table across six settings. It also says plainly when an attack would not clear gas, because a scary number nobody would ever act on is worse than no number.